coal mining method
There were many ways to mine coal. The following conclusions were made: The methods of coal mining could be divided into underground mining and open-pit mining. Underground mining was divided into two categories: wall mining and pillar mining. The wall mining method was featured by a long coal wall, and the roadways at both ends of the working face were used for air intake, air return, coal transportation, and material transportation. The pillar mining method was featured by a short coal wall in the shape of a square pillar, and a large number of working faces were mined at the same time. The specific coal mining methods included strike longwall mining method, inclined longwall mining method, inclined slicing mining method, and longwall top coal mining method. The strike longwall mining method was a mining method that advanced along the strike, the inclined longwall mining method was a mining method that advanced along the inclined, the inclined slicing mining method was a mining method that divided the thick coal seam into slices along the inclined plane, and the longwall top coal mining method was a mining method that first mined the coal at the bottom of the longwall working face of the gently inclined thick coal seam, and then used the top coal mining method. In addition, open-pit coal mining was also a common method of coal mining. The open-pit coal mining has the characteristics of large mining capacity, fast construction speed, high labor efficiency, low production cost, excellent labor environment, guaranteed safety, and high resource recovery rate. Open pit mining had become the main method of coal mining in the world's major coal mining countries. In summary, coal mining methods included underground mining and open pit mining. Underground mining was divided into two categories: wall mining and pillar mining. The specific methods included strike longwall mining, inclined longwall mining, inclined slicing mining, and longwall top coal mining. Opencast coal mining was also a common method.
diamond mining method
Diamond mining methods mainly included alluvial mining, pipeline mining, and ocean mining. Alluvial mining was the oldest method of collecting diamonds by sorting the deposits on riverbeds or beaches. Pipelined mining was divided into two forms: open mining and underground mining. Open mining was closer to the surface, while underground mining required a tunnel to enter the ground to extract diamonds. Ocean mining was a relatively new method. It used ships to extract sand from the bottom of the sea and then look for diamonds in the rocks. These mining methods were used in diamond deposits all over the world.
Barite mining method
Barite mining methods included open pit mining and underground mining. Opencast mining was to excavate ore from the surface of the ground through blasting and excavation machinery. Underground mining was done by digging tunnels into the deposit. The specific mining process included ore exploration, ore mining, ore crushing and grinding, mineral processing and filling. The mining equipment commonly used in underground mining included hand-pushed rubber-tyred vehicles, winches, and local fans. The open-pit mining mainly used equipment such as loaders and dump trucks.
Crosscut mining method
The mining method was to divide the mine into horizontal layers according to a certain height. Starting from the highest point of the mountain, the mining method was to mine layer by layer from top to bottom. This kind of mining method could form a wide platform, leaving no side slope or leaving a gentle side slope, thereby reducing the cost of ecological restoration, reducing the hidden dangers of mine safety, improving the level of resource utilization, and improving the comprehensive social benefits. The cross-cutting mining method promoted by the Natural Resources Department of Hebei Province was in a leading position nationwide.
Travel through coal mining novel recommendation
The following were some recommendations for novels about coal mining: " Time Travel: Don't Want the Throne to Mine Coal "," Start from Mining Coal After Time Travel "," Reborn 80's Beloved Wife Can Mine ", etc. These novels involved the protagonist crossing over to different worlds and engaging in coal mining. Some of them also added other elements such as love stories and immortal cultivation, bringing different reading experiences to the readers. These novels could satisfy people's interest in coal mining and bring them a novel reading experience.
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.
What are the most famous coal mining ghost stories?
The 'Ghost of the Black Pit' is quite famous. It's about a miner who got lost in a labyrinth of tunnels in a large coal mine. His body was never found. Since then, miners have reported seeing a faint light moving through the tunnels at night, which they believe is the lost miner's spirit trying to find his way out.
What are the scariest aspects in coal mining horror stories?
For me, it's the feeling of being trapped. Imagine being deep underground in a narrow, dark tunnel, and then something goes wrong - a collapse or a flood. You're stuck there with no easy way out. There's limited food, water, and air. You don't know if help will come in time, and every minute that passes is filled with anxiety and dread. Miners in such situations must endure not only the physical discomfort but also the mental torture of not knowing their fate.
Tell me some coal mining horror stories.
Well, there was a story where miners were working in an old coal mine. The mine had a history of water seepage problems. One day, without warning, a huge amount of water flooded the tunnels. The miners had to scramble to higher ground, but some were caught by the rising water. They were in complete panic as the water kept rising, and they could hear the creaking of the mine structure around them, fearing it would collapse at any moment.
Can you share some coal mining ghost stories?
One coal mining ghost story is about a miner who was trapped in a cave - in long ago. His spirit is said to still wander the tunnels. Miners claim to hear his faint cries for help at night. They say when they shine their lights in certain areas, they can see a shadowy figure that quickly disappears. It gives them chills and makes them superstitious about those parts of the mine.
Xinghe County Mo Ore Mining Method
The mining method of Xinghe County's Mo ore was mainly open-pit mining. In document 1 and document 2, it was mentioned that the Xinghe County Mo Mine mainly used open-pit mining. In addition, document 5 also mentioned that the mining method of Xinghe County's Mo deposit had changed from underground mining to open-pit mining. Therefore, it could be confirmed that the mining method of Xinghe County's Mo mine was open-pit mining.