Process process for comprehensively mining extra-hard inter-band coal seams with complex texture

Abstract

The invention discloses a process for comprehensively mining extra-hard inter-band coal seams with a complex texture, which is characterized in that extra-hard inter-band coal seams with a complex texture are mined by using a comprehensively mechanized coal mining process; according to the inter-band situation and the coal seam distribution situation of a coal face, a coal mining machine is provided with two cylindrical powerful rotary-cut rollers of which one is used for breaking rock, and the other one is used for cutting coal; and in the process of coal cutting, two coal faces are operated alternately or a coal face is operated independently. By using the process disclosed by the invention, the comprehensively mechanized coal mining of extra-hard inter-band coal seams with a complex texture is realized, therefore, the economic and social benefits of the process are remarkable, and the popularization and application values thereof are high.

Description

technical field [0001] The invention relates to a coal mining method, in particular to a coal mining method for a coal seam with extremely hard gangue and complex structure. Background technique [0002] With the continuous progress of coal mining technology, comprehensive mechanized coal mining technology (referred to as fully mechanized mining technology) has been vigorously promoted. In particular, the degree of comprehensive mechanized coal mining of large coal can reach 100%. However, the comprehensive mechanized coal mining process has its own shortcomings, that is, poor adaptability to the environment; in the case of complex coal seam conditions and one or more layers of gangue, the shearer cannot directly cut, and most coal mines still All adopt high-grade gun mining technology. However, high-end guns have the following disadvantages: [0003] 1. Small safety factor [0004] The blasting technology is adopted in the working face, the storage and use of explosives...

AI Technical Summary

Problems solved by technology

[0019] In order to overcome the shortcomings of the existing high-grade blasting mining methods, a