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开滦能源化工股份有限公司吕家坨矿业分公司是1968年投产的矿井,经改扩建现年产量300万吨。吕家坨矿业分公司根据现场巷道围岩及支护情况,针对在采准巷道局部应力集中区巷道,提出以新型中空注浆锚索为主体的锚注支护系统,进行锚注支护设计,支护效果良好,经济和社会效益显著。一、锚注加固巷道基本情况吕家坨矿业分公司目前可采煤层有7、8、9、12四层。5383工作面位于-800水平三采,主采8层煤,其
Kailuan Energy Chemical Co., Ltd. Lu Jiu Tuo mining branch was put into operation in 1968 mines, after renovation and expansion of the current output of 3 million tons. According to the surrounding rock and supporting conditions of the roadway, Lujiatuo Mining Branch proposed a new bolting and grouting support system based on the new hollow grouting and anchor cable for the roadway in the local stress concentration area of the mining laneway, , Good support effect, significant economic and social benefits. First, the basic situation of anchor Note reinforcement roadway Lv Tuo Tuo mining branch currently has a coal seam 7,8,9,12 four. 5383 Face located at -800 level three mining, the main mining 8 layers of coal, which