城郊煤矿某工作面大型断层防水煤柱留设研究

Study on Waterproof Coal Pillar of Large Fault for a Working Face in Chengjiao Coal Mine

为了探究城郊煤矿深部某工作面对于大型断层防水煤柱留设的合理性和可行性,在参考相关文献的基础上,建立了该工作面与断层之间的关系工程地质模型。结合相关规范,分析计算了不考虑断层破碎带和考虑采动破坏带范围2种情况下的该大型断层防水煤柱宽度具体留设值,2种计算结果的最大值均大于永煤公司2006年规定的宽度,最大相差约227.5 m。最后与实际留设的煤柱宽度进行了对比,发现考虑断层带宽度和采动底板破坏带范围的计算结果更接近矿井实际条件。

In order to study the rationality and feasibility of waterproof coal pillar of large fault for a working face in Chengjiao Coal Mine,on the basis of reference literatures,the engineering geological model was established for the relationship between the working face and large fault. In both cases,considering the range of mining failure zone and without considering fault fracture zone,the retention value of large fault waterproof coal pillar was calculated in combination with the relevant specification,the maximum value was greater than the width specified by Yongcheng Coal Industry Company in 2006,the biggest difference was about 227. 5 m. Finally,by comparing with the actual width of the actual set,it was found that the calculation result was closer to the actual condition of the mine when considering fault width and mining floor damage zone.