切顶卸压沿空留巷支护优化设计与应用

Optimization and Application of Support Design for Gob Side Entry Retaining with Roof Cutting and Pressure Relief

为了缓解采掘衔接紧张,解决综采工作面上隅角瓦斯积聚问题,鹿台山煤业,结合矿井地质条件,在综采工作面轨道顺槽采用切顶卸压沿空留巷工艺。根据2203工作面回采经验,结合实际情况对2205工作面沿空留巷巷道支护进行了优化,应用结果满足设计要求,达到了预期效果。

In order to alleviate the tension between mining and excavation, and solve the problem of gas accumulation in the upper corner of fully mechanized working face, Lutaishan Coal Industry Co., Ltd. adopted the technology of roof cutting and pressure relief gob side entry retaining in the track gateway of fully mechanized working face. According to the mining experience of 2203 working face, combined with the actual situation, the support of gob side entry retaining in2205 working face is optimized. The application results meet the design requirements and achieve the expected effect.