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MARK—22A型连续采煤机是美国费尔查尔德公司生产的薄煤层机械化采煤设备的新产品,这种采煤机适用房柱式采煤方法。使用MARK—22A型连续采煤机及其配套设备后,不分开拓、掘进、安装、回采和收尾等多种工序,使生产连续均衡进行,劳动生产率得到大幅度提高。由于房柱式采煤工作面采用留煤柱和金属(或塑料)锚杆支护,没有液压支护设备,投资大为减少,约为长壁综采的1/10左右,设备吨位的减小又使安装工期缩短。这些优点特别适合于中小煤矿及薄煤层开采。我国在1983年开始引进后在山西杜儿坪矿试用,经过实践使我们对它的技术性能和
The MARK-22A continuous shearer is a new product of mechanized coal mining equipment for the thin coal seam produced by Fairchild in the United States. The shearer is suitable for coal mining with column-column mining method. After using the MARK-22A continuous shearer and its ancillary equipment, it can produce a series of processes without any further development, excavation, installation, recovery and finishing so that the labor productivity can be greatly improved. As the pillar coal mining face with coal pillar and metal (or plastic) bolt support, no hydraulic support equipment, investment greatly reduced, about 1/10 of the longwall mining, equipment tonnage reduction Small and shorten the installation period. These advantages are particularly suitable for small and medium-sized coal mines and thin seam mining. After the introduction of our country in 1983, Du Erping mine in Shanxi trial, after practice so that its technical performance and