岳城煤矿下组煤首采工作面支护研究

Study on the Support of First Coal Mining Face in Yuecheng Coal Mine

针对岳城煤矿下组煤首采面资料不足,巷道顶板风化严重等情况,对巷道进行地质力学测试,确定顺槽130 m处顶板浅部3 m范围内为离层区域,对顺槽巷道和开切眼分别进行了支护设计。现场结果表明:巷道顶底板变化量和两帮移进量均在设计允许范围之内,巷道围岩保持了很好的完整性,提供的支护参数能满足生产和安全要求。

In view of the shortage of coal mining data and serious weathering of roadway roof in Yuecheng Coal Mine,the geomechanical test of roadway is carried out to determine that the shallow part of roof is separated from the floor within 3 m of 130 m of Shun trough.The supporting design of roadway and opening hole is carried out respectively.The field results show that the variation of roadway roof and floor and the amount of two sides moving in are within the allowable range of design,the surrounding rock of roadway maintains good integrity,and the supporting parameters can meet the requirements of production and safety.