米山煤业15103工作面水力压裂坚硬顶板技术研究

Study on Hard Roof Technology of Hydraulic Fracturing in the 15103 Working Face of Mishan Coal Mine

针对米山煤业山15煤层回采顶板岩层不易垮落的问题,采用水力压裂的方法进行处理。在回采巷道采帮侧施工压裂钻孔,其中运输巷布置A类钻孔和C类钻孔,回风巷布置B类钻孔和D类钻孔。现场监测结果显示:工作面回采过程中顶板岩层能够及时垮落,达到了预期的目的。

In view of the problem that the mining roof strata are not easy to collapse in the 15coal seam of Mishan Coal Industry,the method of hydraulic fracturing is adopted to deal with it.Fracturing boreholes are constructed on the side of the mining side of the mining roadway,in which type A and type C boreholes are arranged in the transport roadway,type B and type D boreholes are arranged in the return air roadway.The on-site monitoring results show that the roof strata can collapse in time during the mining process of the working face.The expected goal has been achieved.