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钱营孜煤矿32煤层直接顶为泥岩,力学性质差、节理和裂隙发育,而且煤层结构较复杂,3212工作面为其首采面,为了保证该综采工作面的安全高效生产和后续工作面的正常接替,根据矿压理论并按照防漏、防压、防推的控顶原则,对工作面进行控顶设计,包括支架工作阻力、初撑力与支架高度的确定。根据控顶设计结果及支架选型原则,结合具体地质生产条件选定了3212工作面液压支架型号,实践证明该支架适用性良好,有利于工作面的高产高效,对接替工作面合理布置有借鉴意义。
The 32 coal seam of Qianyingzi Coal Mine directly tops mudstone, which has poor mechanical properties, developed joints and fractures, and the coal seam structure is complex. The 3212 working face is the first mining face. In order to ensure the safe and efficient production and subsequent working face of the fully mechanized mining face According to the mine pressure theory and in accordance with the principles of leak prevention, pressure prevention and anti-push control, the roof control design of the working face, including the work support resistance, the initial support force and the height of the support. According to the design results of top control and the principles of support selection, 3212 hydraulic support model was selected according to the geological conditions of production. Practice shows that this support has good applicability, which is good for high productivity and high efficiency of work surface. significance.