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鸡西矿务局小恒山煤矿薄煤层工作面使用美国MK—22型连续采煤机,于1988年4～6月份平均单产15739.6t,其中4月份单产21475t,效率17.7吨/工,创吨煤成本2.99元的好成绩。 MK—22型连续采煤机自1986年投产后,由于各种原因,产量一直不高。后来对基础巷道宽度、煤柱规格、锚杆长度及房柱采煤回采工艺进行反复研究,提出改进措施,促进了生产,创出良好成绩。分别简述如下。一、生产技术条件使用MK—22型连续采煤机的薄煤层工作面是鸡西矿务局小恒山矿立井二水平10~#
In the small coal seam face of Xiaoshan Coal Mine, Jixi Mining Bureau, the United States MK-22 continuous shearer was used, producing an average of 15,739.6t between April and June of 1988, of which 21475t was produced in April with an efficiency of 17.7 tons / 2.99 yuan of good grades. After the MK-22 continuous shearer was put into operation in 1986, its production has not been high due to various reasons. Later on the width of the basic roadway, coal pillar specifications, length of bolt and coal mining pillar mining process repeatedly studied, put forward improvement measures to promote the production hit a good result. Briefly described as follows. First, the production of technical conditions The use of MK-22-type continuous coal mining machine thin seam face is Jixi Mining Bureau Xiao Hengshan Mine shaft two levels 10 ~