链臂锯切割造缝切顶卸压技术及应用

针对同煤集团塔山矿三盘区沿空掘巷巷道围岩控制困难的问题，同煤集团开发了链臂锯切割造缝切顶卸压技术。通过现场监测的方法研究了矿用链臂锯切割造缝切顶卸压的应用效果，研究表明：8311工作面回采过程中，随着工作面的推进，2312巷煤柱和煤体深部应力先增大后减小，最后趋于稳定，且链臂锯切缝试验段煤体围岩应力峰值普遍小于无切顶操作试验段，说明链臂锯切顶卸压效果良好。研究成果对链臂锯切顶卸压技术的推广及应用具有指导意义。

Technology and Application of Chain-Saw for Roof Cutting and Pressure Releasing

In order to solve the problem of difficulty in controlling the surrounding rock of the roadway along the goaf in the third panel of Tashan Coal Mine of Datong Coal Mine Group, Datong Coal Mine Group has developed the chain-saw cutting roof pressure relief technology. In this paper, the application effect of pressure relieasing with chain-saw is studied in the field. The research shows that as the mining of the 8311 working face advances, the coal pillar and coal body deep stress in roadway 2312. It shows the form of increasing first, then decreasing, and finally stabilizing, and the peak stress of the surrounding rock in the test section of the chain-saw joint is generally smaller than that of the test section without the roof cutting operation, indicating that the pressure relief effect of the chain-saw cutting roof is good. The research in this article has guiding significance for the popularization and application of cutting roof and pressure relief with chain-saw.