Don't fill the pit, only open the pit novel
" Kidnapping All Humans " and " Sister Li's Bastard Superpower World " could be seen as novels that did not fill in the holes but only opened the holes. " Kidnapping All Humans " was a novel and rigorous setting, with characters from all walks of life. However, the author only wrote about 80,000 words before he stopped updating it." Sister Li's Bastard Superpower World " had a novel superpower setting and a big foreshadowing, but the book was composed of short stories and had stopped updating. Even if the stop did not affect the reading, it was later renamed " Superpower World." Read more exciting novels for free
Crossing the novel world to fill the pit
To fill in the pit and cross the prehistoric novel recommendation
The following are the recommendations of a few prehistoric novels: 1. " Diary of Prehistoric Beast World Survival ": This novel was written by Jin Ge Wanli. It tells the story of the main characters Gu Jiuli and Shi Bai surviving in the Prehistoric Beast World. This was a farming novel that traveled through time and space, with healing and daily life as its theme. 2. " Traveling to Prehistory for Construction ": This novel was written by Mulan Zhu, and the story was set in the tribal society of ancient Earth. The protagonist traveled back in time to the prehistoric era and created the Huaxia tribe. He used the power of modern science to develop the technology tree of the tribe. This novel used infrastructure as its theme and described the adventures and developments of the protagonist in prehistoric times. 3. " Time Travel to 10,000 Years Prehistory ": This was a magnificent adventure novel that told the story of the protagonist's life in 10,000 years of prehistory. The protagonist used his survival skills and knowledge to hunt in the mountains, fish in the water, farm, renovate tools, fight ferocious beasts, and fight in all directions. He experienced the story of fire and blood, laughter and tears. These novels covered different topics and storylines to satisfy the readers 'interest and curiosity about traveling through prehistory.
Open pit mining method
The open-pit mining method mainly included the technological processes of drilling, blasting, mining, transportation, and rock discharge. Piercing work was the primary process of open-pit mining. It was done by a down-the-hole drill or a roller drill to control the ore grade and improve the blasting quality. Explosions were used to blast rocks or rock formations to facilitate subsequent mining operations. Mining and transportation was the transportation of ore from the open space to a designated location. It was usually operated by excavators, cars, electric vehicles, and other equipment. Rock removal was to remove the rocks or rock layers produced during the mining process to maintain the unobstructed flow of the mining area. The open-pit mining method has the characteristics of large mining space, excellent working conditions, high labor productivity, and low mining costs.
Open pit mining process
The mining process of open-pit mines included drilling, blasting, shoveling and loading of ore (rock), transportation of ore and rock, and discharge of rock. Piercing was the primary process of open-pit mining. Its purpose was to provide holes for blasting to store explosives. The quality of the piercing was directly related to the efficiency of the subsequent blasting, mining, crushing, and other work. There were two methods of piercing: thermal piercing and mechanical piercing. Commonly used drilling equipment is divided into shallow hole drill (rock drill and rock drilling jumbo) and deep hole drill (roller drill and down-the-hole drill) according to the depth of drilling. Explosions were the key to the mining of open pits. The rocks were broken through explosions to facilitate the subsequent mining and transportation. The shoveling of ore (rock) was to load the blasted ore or rock into a transportation tool, such as a truck or a conveyor belt. The transportation of ores and rocks was to transport the shoveled ores or rocks to a designated location. The common transportation methods were trucks and tape conveyor. Rock discharge was to discharge the ore or rock from the transportation tool for subsequent treatment or processing. In general, the open-pit mining process was a continuous process, and each link played an important role.
Is there a novel similar to "Rebirth to the Cultivation World to Fill the Pit"?
There were novels similar to "Reborn to the Cultivation World to Fill the Pit" 1:"After the Female Lead of the Passive Buddha System reloaded her file", Author: The Second Demon King 2."The Story of the Intrepid Immortal Cultivator", Author: Little Pangu 3:"Immortal Destiny in Qingdu", Author: Ke Yuyu 4."Longevity begins with raising seven cannon fodder martial nephews." Author: Mochen 5:"No way, Junior Sister ascended after farming!" Author: No Fish in the Pit 6."After Reading My Heart, All the Villains Are Numbed." Author: Ye Jiubai 7:"Our Female Cultivators Should Be Self-Strong", Author: Walking on Horses in Chang 'an 8:"The Scroll King's Cultivation Journey", Author: Luo Ru Shi Ru Yu 9."Great Qin Celestial Kingdom: I Become an Immortal by Relying on the Dao of Gou." Author: The Mountains and Rivers Are Joyfully United 10:"Rebirth at the End of the World: I Closed My Door Meditation in the Cultivation World." Author: Jinxia Zuiqingyan Fairy Wait, Author: Let Me Slow Down Chapter 12: I Roll Immortals in the Human World, Author: Shu Xiaoyi 13:"I'm the Best in Cultivation Education", Author: Star Recruit Longevity Begins from Demon Control, Author: Chengxin "The Rebirth of the Big Boss of the Divine Court." Author: The Girl Who Loves Meat Bun "The Owner of This Magical Treasure Store Is Extremely Fierce." Author: Chen Xiaoxiao Doesn't Like to Smile Cultivation Idiot Zhao Xiaomeng, Author: Zhao Qi 'an "Super Plantation Planter", Author: Ye Under the Moonlight 19:"Slag in the Four Seas and Eight Wastelands, Shuraba Everywhere", Author: Big Fruit 20:"After Crossing into the World of Cultivators, I Was Reckless and Curly", Author: Once Upon a Time, There Was a Tailed Fish The following is a detailed introduction of these novels: 1:"After the Female Lead of the Passive Buddhist System reloaded her file": Shen Qingyu had transmigrated again. Why did she say again? Because she had already transmigrated once. In her previous life, she had become the most senior Grand Madam in the Duke of Qin's residence when she opened her eyes. She had lost her husband for a long time, and her son had inherited the title. It could be said that she had reached the peak of her life the moment she transmigrated. She concealed her true nature and played this role conscientiously. She played it for twenty years until she died of old age at the age of 78. She thought that she had ended this absurd journey of transmigration, but when she opened her eyes, she was wearing it again! At the same time, in the same place, but with a different identity, this time she was dressed as the youngest daughter of the Assistant Minister of Works, Shen Zhongwen, who was only eight years old. With the experience of her previous life, her life was much smoother. Unfortunately, she had been in the upper echelon for a long time, and everyone looked like her grandson. The commander of the capital who had a kind face but a ruthless heart and would see blood every time he appeared? "No, no, I'm scared of blood." Chen Qingyu shook her head. "It's fine!" Wen Mobai sneered. If you're blind, you won't faint." Listen, is this even human? 2.<<Chronicles of the Intrepid Immortal Cultivator>>: The female protagonist is a transmigration novel. The female protagonist is a demonic cultivator. She was betrayed by her sister and transmigrated into a silly girl. In the ancestral hall of the original owner's mother's family, she met the ancestor's soul and obtained the inheritance of immortal cultivation and space. The female lead ascended all the way to the spirit world and met the male lead who cultivated the devil. The two of them agreed to meet again in the divine world. 3.<<Immortal Destiny of Qingdu>>: She is the little princess of the Great Tang Empire of Jambu Province, but she is a sickly little girl. She doesn't have long to live! An unexpected opportunity had allowed her to leave the mortal world and become a member of his world cultivation path. The sect changed one after another, the road was tough, step by step, bitter and happy, to find the legendary Qing Du, her immortal destiny. 4."Longevity begins with raising seven cannon fodder martial nephews": As the uncle-master of the seven cannon fodder tool female supporting characters in Long Aotian's novel, Ning Yuxian, nicknamed "Salted Fish", was cannon fodder without a name in the original text. After her rebirth, Ning Yuxian, who had wanted to continue being a 'salted fish' lying on the ground, was targeted and schemed against in the process of helping her junior nephews. She also discovered more conspiracies behind the scenes. It was impossible for him to be a salted fish. Then, he would teach his martial nephew well and hope that they would support him in his old age. In the end, after her martial nephews became successful, she became immortal? There was no CP in this article! 5:"No way, Junior Sister ascended after farming!" In the cultivation books that Bai Rao had transmigrated to read, he had turned into an ox tendon grass with tenacious vitality. What! Was she a fat sheep that the female protagonist had taken advantage of? As a well-behaved fat sheep, he had to learn how to speak tea and avoid the female protagonist's gaze to secretly develop. He had to use his advantage to pluck the wool of the fat sheep around him until it was bald! She had wanted to cultivate, but she accidentally discovered that farming could increase her cultivation, so she raised grass while others raised beasts. The proper Bai Rao joined an improper sect and became a passerby. Everyone thought to themselves,"This crazy sect finally has a normal person!" The venomous eldest senior brother thought,"Another piece of trash." Love Brain Second Senior Brother: The new junior sister is so cute. The ice-cold Third Senior Sister said,"I'll kill you first if you dare to betray the sect." Elegant Fourth Brother: Does Junior Sister know how to taste tea? The disciples of the other sects thought,"Your junior sister is the biggest lunatic. Which alchemy cultivator is a sword cultivator and specializes in long-range combat?" [No CP, imperfect character, there are good and bad couples] 6."After Reading My Heart, All Villains Win":[Rebirth + Family Mind Reading + Group Pet + Male Lead + Female Lead Omnipotent Gaga Qiang] Ning Zhishui died on the path to heaven, just one step away from becoming an immortal. The mighty figures of the other aristocratic families all brought their family treasures to block the last hurdle. They laughed at her and each of them gave her a kick."Who asked Fellow Daoist Ning to not have the support of her family?" However, the heavens did not disappoint her and gave her a chance to be reborn! Ning Zhishui sharpened her knife and planned to live a second life. She must bring her entire family to ascend together! What aristocratic family! My Ning family is the number one family! However, he did not expect… [My father, who eventually became an evil cultivator, clearly had the immortal bone, but he didn't notice it for his entire life. In the end, it was obtained by that evil person!] [Mother, do you know that your name as the Poison Fairy is still being mentioned and cursed hundreds of years after your death?] [Brother, you're brave and brave, and your talent is extraordinary. Why did you fall in love with a white lotus? In the end, you even became a great demon for her. You didn't have a good ending!] [Second brother, your master is considerate to you just to possess you. You can't lose your mind like in your previous life and become his killing puppet!] [Auntie! Give up on that scumbag. He's already hooked up with your best friend and wants to harm you together. Then, he'll snatch the bracelet that you carry with you!] Everyone in the Ning family was speechless. How could this be? In the end, Ning Zhishui looked at her father who had discovered the immortal bone, her mother who had become a Fairy Doctor, her elder brother who had dumped White Lotus, her second brother who had killed her master and absorbed her cultivation, and her aunt who had kept the bracelet and advanced all the way... She was dumbfounded. 7."My Female Cultivators Should Be Self-Strong":"My Female Cultivators Should Be Self-Strong" was a traditional immortal cultivation novel in a serial. The author used excellent writing and smooth plot to successfully create the image of a female protagonist without a CP. The female lead was not a transmigrator, but a native girl. Her growth was full of hardships and dangers, but she always persisted in cultivating and constantly tempering herself. She was intelligent, attentive, tenacious, and independent. This was a stark contrast to the female protagonists in other Xianxia novels. Although the female lead's appearance was flawed, she did not care. This kind of honest attitude was admirable. Although the title was a little rustic, the content was outstanding. It was a novel worthy of recommendation. The author's new works were also anticipated. He hoped that the author could maintain his standards and bring more excellent works to the readers. In conclusion, I strongly recommend 'My Generation's Female Cultivators Should Be Self-Strengthened.' This book is definitely worth reading. 8."The Scroll King's Cultivation Journey": The orphan Yun Ying was forced to live in the hands of her aunt. She finally had a chance to turn her fate around, but she realized that her master seemed to have other plans. The foggy massacre of her family, the unusual body, and the curse of misfortune all clearly showed that she was different from others. When she stepped on the clouds and walked step by step towards the ultimate mystery of fate, there was an irresistible temptation in front of her. Whether she accepted the arrangement and became a puppet or stayed true to herself and walked into more unknown, it was up to her own choice… 9."Great Qin Immortal Kingdom: I Become an Immortal by Relying on the Dao of Gou": In the 6,666 years of the Great Qin Immortal Dynasty, the black moon surged, and demons, ghosts, and monsters emerged one after another. From then on, the Humble Class disciples rose up, and there were many outstanding figures. Chen Qinghe had transmigrated here, he didn't seek to be outstanding, he just wanted to become an immortal. 10:"Rebirth in the Apocalypse: I Closed My Door Meditation in the Cultivation World": After struggling for ten years in the apocalypse, Jiang Wan still couldn't escape the fate of being eaten by zombies. After being reborn into the cultivation world, Jiang Wan began to cultivate in seclusion in order not to repeat the mistakes of her previous life. A small seclusion every three days, a major seclusion every five days. As long as the seclusion didn't kill him, he would go all the way! The entire Heavenly Divination Sect had been shut down by her. One day, a disciple wanted to go to the Netherworld Pool to cultivate, but he was told that Jiang Wan was in seclusion and that no one was allowed to disturb her. Three months later, a disciple wanted to go to Sunset Marsh to cultivate, but he was told that Jiang Wan was in seclusion. Yuxi Valley, Full Moon Peak, Qiyun Mountain…even the lava volcano was not spared! Jiang Wan was either in seclusion or on her way to seclusion! In the end, the disciple who couldn't take it anymore decided to go to the deserted Flowing Smoke Desert. He was told that Jiang Wan was in seclusion again! All the disciples thought,"Why is she everywhere?" ------ The female protagonist cultivates to grow up. There is a male protagonist, but there are not many scenes. Invisible people, those who mind, be careful. 11:"Fairy, Wait" The concubine daughter of the Jiang family was exiled to the countryside for more than ten years. No one knew her talent and talent. The eldest daughter of the Jiang Family had plotted against her for her opportunity. Previously, the elders of the family had contracted a ferocious beast, the Red Tiger, for her. Later, the main family of the Immortal Cultivation World had paved the way for her. She was matchless and had boundless glory. Jiang Lian: I was caught in the rain, so I broke someone else's umbrella. This book is also known as "If I'm not doing well, don't even think about getting better" and "Who can roll me up?" Don't Live Immortal cultivators have strong bones, and those who reach the Tao are the most spiritual of gods. Jiang Lian started with a sword and all the equipment was picked up. 12:"I Curl Immortals in the Human World": 4 stars During the process of the female protagonist's cultivation, she discovered memories of the future, so the cultivation became a story that revealed secrets. This immortal cultivation novel was not ordinary. After reading more than 100 chapters, she was still wandering in a secret realm. Although the female lead had a cheat, it was also set up to pave the way for the plot. It did not go against the rules. Most of the battle scenes in the article were quite exciting and could be read with his brain. There were also some memories and revealing of secrets in the middle of the story. The whole story could be considered to have ups and downs, and there was a desire to catch up in one breath. The title of the book was a little far-fetched, but it didn't affect the reading.😂 It was a pretty good cultivation essay! It was recommended! It was worth falling into the pit! "I'm the Best in Cultivation Education": Lu Zhu is a promising young man from the 21st century. He inexplicably transmigrated to a world of cultivation. Other people transmigrated with all kinds of natural endowments and physiques, but she was here to mine? Not only did the heavens give her a sallow, skinny, and tanned appearance, but she was also so poor that she could not even eat a single bite. The tragedy of life was nothing more than being alone. She was ugly and poor, and she had it all… Fortunately, the sect leader of the strongest sect within a hundred miles saw his extraordinary talent and embarked on the path of compulsory education. He could become immortal and become rich in no time. However, why was it that the moment he entered the sect, the roof tiles were broken and the house was rotten? I'll endure it for the tuition fees! Lu Zhu worked hard and cultivated diligently. A year later, he finally became the weakest existence in the sect. She finally knew a cruel truth: There was only one sect within a hundred miles… Was the old man's talent the standard way to get people to talk to him? If I want to leave, don't stop me from going down the mountain to earn big money! Sect Master: If you love to walk, the tuition fees will not be refundable! After the formation class battle, The sect master hugged Lu Zhu's calf."Little Bamboo, you're the light of genius in the cultivation world. Please don't go. You must inherit my mantle!" Hmph…so she was a formation genius. Who asked this world's rune array principles to be elementary school basic mathematics? She was someone who had attended elementary school's Math Olympiad class! Let's see how the outstanding successor of the nine-year compulsory education will cultivate and become rich through hard work. The main plot of this book is to cultivate immortality and easily fight monsters, pretend to be a pig to eat a tiger, act tough and face-smacking funny daily life, there is a male lead (male lead cultivates the path of ruthlessness) 14."Longevity Begins from Demon Taming": Chengxin's new work. I haven't read it yet. There are a few books in front of me. The quality is guaranteed. I'll keep them for now. 15:"The Rebirth of the Big Boss of the Divine Court": This book was praised by many book lovers. Thinking that we had the same thoughts, they went to read it. The content of the design was not bad, but the updates were worrying. The author wrote quickly, add more! "The Owner of This Magical Treasure Store Is Extremely Fierce": Interesting. Give me some milk (Hello) Chapter 17:"Cultivation Idiot Zhao Xiaomeng": The two worlds are connected, and the demons are invading on a large scale. They feed on human beasts. Wherever they go, people are plunged into misery, and no bones are left. To the north of the big crack, as far as the ice plains, no place is spared. No one can be left alone! I am Zhao Xiaomeng, a descendant of the Donghua royal family. I was born in the mountains and grew up in Qingyun Sect. My teacher is Xu Junqian! In order to carry out his master's will, to protect his friends and family, and to protect all the people in the world, he was willing to fight the demons! In this battle, there was only life and death, no victory or defeat! 18:"Super Planetary Planter": Su Qing, who was afraid of society, traveled to another world and found that the farming society he was in was a little strange. Why was there a shadow of the future interstellar? For example, there were cars that could fly in the sky, nanny robots in schools, and exotic beasts and demon beasts? What an amazing combination! Therefore, Qingqing brought her golden finger, the beautiful and elegant ancestor, and began her journey as a super plant cultivator in the foreign world. (The tender grass is slightly plump and can be planted. PS: She's a little blue and skinny at the moment. I don't know if it's because the author hasn't been in a good state recently or something, but the female lead's personality has become a little strange. Not cool enough…) After transmigrating to the cultivation world, Yang Rongrong worked tirelessly as a bootlicker for more than a hundred years. She had finally managed to get the Sword Saint, Monster King, Demon Lord, and Ghost Emperor's favorability to 100. He thought that he could finally go home, but the system suddenly malfunctioned! All her previous efforts were wasted and she was forced to stay in the cultivation world. Yang Rongrong: "Alright, alright. Must you play me like this?" Then don't blame me for going crazy. …… The Sword Saint said,"Are the vows you made to me no longer valid?" Yang Rongrong: Love doesn't have to last forever. Just listen to the oath. The Demon King: You said you would love me forever! Yang Rongrong: "I did say that I love you, but I never said that I only love you." Demon Lord: How many predecessors do you have? Yang Rongrong: What ex? They are all my love mentors. The Ghost Emperor asked,"What's your relationship with them?" Yang Rongrong: "Based on the principle of being responsible for love, I never confirm a relationship easily. (The style of writing is relaxed and idiotic, 1v1 mutual favor, stable daily updates, welcome to collect~) After transmigrating into the immortal cultivation world, Ye Pianran developed while she lived and died. He was born into a noble family, but he was not valued by the family. Instead, he was bullied by his powerful cousin. Ye Pianran said,"Be humble first." The cultivation world was full of geniuses and powerhouses. Fists were the absolute principle. Ye Pianran,"Open the book." Just like that, not only did he finish off his cousin, but he also made a group of prodigies cry. On a certain day. All the elites looked at the figure that was standing gracefully and ridiculed crazily. "How did this person cultivate? I was born with a natural body of Dao, a single wind spiritual root, and I cultivated ten years earlier than her. Why is she one realm higher than me now?" "I'm the Sword Son, and the Patriarch praised my talent in the sword for being the best in three generations. How can she be stronger than me?!" “……” Ye Pianran smiled slightly. Aiya, she had forgotten that no one could threaten her now, and no one was stronger than her. But she was used to being lazy and curly. What if she couldn't change it? [Upgrade, slow start, no CP]
What are the conditions for open-pit mining?
The conditions for open-pit mining included the following aspects: First, the coal seam must be continuous and stable to ensure that there would be no safety problems such as collapses during the mining process. Secondly, the stripping ratio needed to be appropriate, which was the ratio of the amount of soil and rock that needed to be stripped to the amount of ore mined per ton of ore. In addition, the comprehensive mining technology of the open-pit coal mine also needed to meet the mining conditions. In addition, mining open-pit coal mines also required a series of qualifications, including business license, mining license, safety production license, land certificate, and so on. At the same time, he also needed to apply for an environmental impact assessment report, approval documents from the environmental protection department, and a pollution discharge permit or pollution discharge registration form. Finally, the mining of open-pit coal mines also required the selection of appropriate mining methods according to the distribution of the deposit, such as continuous mining, intermittent-continuous mining, and intermittent mining.
Open pit mining methods and methods
The mining methods of open-pit mines included mechanized mining methods and non-mechanized mining methods. Mechanized mining methods mainly used mechanical equipment for mining, such as excavators, cars, electric vehicles, bulldozers, etc. The non-mechanized mining method used manpower or a combination of human and animal power to mine. According to the stope form of the stripping material, there were mainly pit mining methods and in-place mining methods. Pit mining methods included top-down mining, stone mining, spiral drilling mining, water jet mining, etc. In-place mining methods included in-place extraction mining. According to the location where the stripping was discarded, it could be divided into inner discharge mining method and outer discharge mining method. Internal drainage mining methods included toppling mining and digging mining. According to the mining technology, open-pit mines could be divided into mechanical mining and hydraulic mining. The hydraulic mining was only suitable for mining soft deposits, while mechanical mining was a widely used mining method in open pit mines.
Safety regulations for open-pit mining
The safety regulations for open-pit mining included many aspects: ** I. Safety Requirements for the Formation of Steps ** 1. ** Production bench height **: There is a clear regulation. If the height of the bench after the completion of mining exceeds the regulation, it needs to go through technical demonstration and be determined by the design on the premise of ensuring safety. 2. ** Explosive pile height during shoveling **: When shoveling with an excavator or a shovel, the explosive pile height should not be greater than 1.5 times of the maximum excavation height of the machine. 3. ** Regulations on non-working steps **: The final slope angle and minimum working platform width of non-working steps shall be specified in the design. Mining and transportation equipment, transportation routes, power supply and communication lines shall be set within the stable range of the working platform. The distance between the edge of the explosion pile and the central line of the standard gauge railway shall not be less than 2.5m, the distance between the edge of the explosion pile and the central line of the narrow gauge railway shall not be less than 2.0m, and the distance between the edge of the explosion pile and the edge of the car road shall not be less than 1m. ** II. Safety Requirements for Piercing Operation ** 1. ** When the drilling machine stabilizes the vehicle **: It should maintain a sufficient safe distance from the top line of the step slope. The minimum distance between the center of the jack of different types of drilling machines and the top line of the step slope is different (for example, the distance between the jack center of the trolley is 1m, the distance between the roller drill, the down-the-hole drill, and the wire rope impact drill is 2.5 m, and the distance between the soft rock mass and the rock mass is 3.5 m). There should be no cushion stone under the jack to ensure the stability of the step slope. No one should be on the platform when the drilling machine is working. Non-operating personnel should not stay around. The drilling machine and the electric shovel near the bottom line of the slope should not work at the same time. If the machine is shut down for a long time, cut off the power supply on the machine. 2. ** When drilling the first row of holes **: The angle between the central axis of the drilling machine and the top line of the step slope should not be less than 45°. 3. ** When the drilling machine is walking near the edge of the step **: Check whether the walking route is safe. The minimum distance between the protruding part of the outer side of the drilling machine and the top line of the step slope is stipulated for different types of drilling machines (for example, the minimum distance between the protruding part of the outer side of the trolley and the top line of the step slope is 2m, and the minimum distance between the protruding part of the outer side of the roller drill, DTH drill and wire rope impact drilling machine and the top line of the step slope is 3m). 4. ** When the drilling machine is moving **: There should be someone under the machine to guide and supervise it. It is not advisable to walk on the slope with a slope of more than 15°. If it is more than 15°, put down the drilling frame, assign someone to command and take anti-overturning measures. When walking, the driver should honk first. No one should be in front of or behind the track. No one should make a 90° sharp turn or walk on soft ground. When passing through high and low voltage lines, a sufficient safe distance should be maintained. No one should stay on the slope for a long time. No one should walk far away at night without sufficient lighting. Non-operators should not be in dangerous areas when lifting and landing the drilling frame. ** 3. Other aspects ** 1. ** Stripping ratio inspection **: The inspection content includes the mining ratio of the mine. By checking the design and production data and inspecting the mining situation on the spot, the inspection shall be carried out according to the Notice of the State Administration of Mine Safety Supervision on Carrying out the Special Rectification of Production Safety in Open Pit Mines, focusing on the serious imbalance of mining and stripping without taking any treatment measures. 2. ** Regarding underground to open pit mining **: When underground mining is converted to open pit mining, the goaf and karst caves must be explored, and the goaf and karst caves that pose a threat to the safety of open pit mining must be handled according to the design. When there are abandoned tunnels and goafs that threaten open pit mining, targeted safety precautions must be taken in advance. When open pit mining is carried out within the scope affected by underground mining, effective safety technical measures should be taken. 3. ** Safety platform and cleaning platform **: Safety platform and cleaning platform should be set up in the open-pit according to the design. 4. ** Working slope angle and step height **: The working slope angle shall not be greater than the designed working slope angle. The final side slope step height shall not exceed the designed height. The height of the production step shall comply with the relevant regulations. 5. ** Equipment, materials, and craftsmanship **: You cannot use equipment, materials, or craftsmanship that is prohibited by the country. 6. ** Mining sequence **: The top-down mining sequence should be divided into steps or layered mining. Small open-air quarries should adopt the step mining. If the step mining cannot be adopted, the top-down layered mining sequence should be adopted. The slicing height, maximum mining height and final slope angle of slicing mining in small open quarry shall be determined by design. The number of slices and the maximum mining height have different restrictions under different blasting operation methods. The width of the drilling platform for slicing mining shall be determined by design, and the minimum width of the drilling platform shall not be less than 4 meters. The minimum distance between adjacent quarries should be more than 300 meters. If you want to know more about the follow-up, click on the link and read it!
technical requirements for open-pit mining
The open-pit mining operation mainly included the processes of drilling, blasting, mining, loading, transportation, and dumping. According to the continuity of the work, it could be divided into intermittent, continuous, and semi-continuous. For different types of deposits, the mining technology requirements were different. Among the mining methods for flat deposits (the dip angle is generally less than 12°), the intermittent mining process is suitable for various geological ore and rock conditions; the continuous mining process has high labor efficiency and is easy to realize the automatic production process, but it can only be used for soft ore and rock; the semi-continuous mining process has the characteristics of the above two, but in hard rock, it needs to increase the link of mechanical crushing of rock. In the top-dump mining method, the characteristics of mechanical shovels and draglines should be considered to reasonably arrange the equipment combination. For example, when stripping high steps, due to the relatively light dragline shovel, the dragline shovel should be used more often. According to the needs, a mechanical shovel with a dragline shovel, two draglines with each other, or only one dragline shovel as a secondary top-dump plan could be used. The horizontal mining method had to consider the restrictions of the specifications of the stripping material transportation equipment (such as the dump bridge and the boom dump truck) on the spatial relationship between the stripping bench and the mining bench. In addition, different mining technologies had certain requirements for equipment, such as the drilling diameter of large-scale high-efficiency roller drills reaching 380 - 444mm; the charging vehicle that could mix cheap explosives and waterproof explosives on the spot; the mechanical shovel, the hydraulic shovel, and the front loading machine must have suitable bucket capacity; the electric locomotive, traction unit, self-tipping car, and dump truck must have suitable load capacity; and there must be corresponding bulldozers, shifters, graders, scrapers, and other supporting equipment. In the mining process, the optimization of relevant economic indicators such as production stripping ratio and bench height, as well as the balance and control of resource recovery rate, mining cost, mining efficiency, etc. needed to be considered. If you want to know more about the follow-up, click on the link and read it!
What does it mean that the novel doesn't fill the pit?
In the context of a novel," not filling in the hole " meant that the author would not explain or answer the suspense, foreshadowing, or unsolved mysteries left behind in the previous story during the creation process. For example, in some series of novels, there might be many mysterious plot elements in the first part. Under normal circumstances, these elements should be explained reasonably in the later parts. However, if the author chose not to fill in the holes, he would not deal with the remaining plot content. It was also possible that during the creation of a novel, some plot clues were cut off midway and were not perfected in the later parts. This was also a manifestation of not filling in the holes. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>