连续采煤机技术及有关设备１局部回采及多头设备８０年代，世界各国纷纷引进长壁开采法，但采用房柱法开采的煤仍占井下煤产量的６８％。而今，连续采煤机提高了生产率和灵活性，因而长壁采煤法一直占井下煤产量的主导地位。一般情况下，房柱采煤法需一台连续采煤机、两台... Continuous shearer technology and related equipment 1 Partial recovery and long equipment In the 1980s, all countries in the world introduced longwall mining methods one after another. However, coal mined by the pillar-and-pillar method still accounted for 68% of the underground coal production. Today, continuous shearers increase productivity and flexibility, and the longwall mining method has been the dominant source of underground coal production. Under normal circumstances, the housing and pillar mining method requires a continuous shearer, two ...