Underground mining is a complex production process. It is necessary to comprehensively apply scientific techniques such as geology, measurement, development, tunneling, blasting, transportation, upgrading, ventilation, drainage, power, safety and management, and select appropriate mining methods to ensure the safety of the production process. . Mining methods include mining, cutting, mining, and goaf processing.
1. coal mining method
Coal mining methods can be divided into two major systems: wall and column. The wall mining method is divided into a single longwall mining method and a stratified longwall mining method according to the thickness of the coal seam. The gently inclined and inclined coal seam adopts the working face of a single longwall coal mining method. The mining technology mainly includes three types: blast mining, general mining and fully mechanized mining. The stratified longwall mining method can be divided into two types: the longwall mining method and the inclined longwall coal mining method. Column mining methods are divided into room type and room type.
2. metals, non-metallic mineral mining method
According to the management method of ground pressure during mining, the mining methods of metal non-metallic ore are divided into three categories, namely, the open field mining method, the filling mining method and the caving mining method, the classification of each mining method and its applicable conditions.
3. Mining technology management
According to the production technology management link, the safety technology management of the mining face is mainly divided into three parts: before the start of the mining face, the construction organization design should be carried out, and the operation rules of the mining operation face should be formulated; the workers should be organized according to the regulations of the operation rules; When encountering unexpected problems in the execution of the operating procedures, it is necessary to seek improvement methods, modify the operating procedures in time or supplement relevant safety technical measures.
Aluminum plate refers to the aluminum material with a thickness of more than 0.2mm to less than 500mm, a width of more than 200 mm, and a length of less than 16m, which is called aluminum plate or Aluminum Sheet. Aluminum plate with a thickness of less than 0.2mm is called aluminum material, and aluminum plate with a width of less than 200 mm is called row material or strip material (of course, with the progress of large equipment, there are more aluminum plates with a maximum width of 600 mm).
Aluminum plate refers to the rectangular plate rolled by aluminum ingot, which is divided into pure aluminum plate, alloy aluminum plate, thin aluminum plate, medium thick aluminum plate and patterned aluminum plate.
Aluminum plate, aluminum rolling plate, Extrusion Aluminum plate
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