煤矿深部软岩巷道松动圈测试及支护技术研究

Research on loose circle testing and supporting technology ofdeep soft rock roadway in coal mine

为了确保巷道的稳定性,采用地质雷达对巷道围岩松动圈进行测定,根据底板、顶板和帮部测线的雷达探测图像,得到松动圈厚度特征值;然后采用FLAC数值模拟软件对深部软岩巷道支护技术进行研究,得到巷道最优的支护参数、巷道预留让压空间以及软岩巷道二次支护强度。研究为后期巷道支护参数的优化提供了技术支持。

In order to ensure stability of roadway,the geological radar was used to measure surrounding rock loose zone,and the characteristic value of the thickness of the loose zone was obtained according to the radar detection images of measuring lines of floor,roof and side.Then,FLAC numerical simulation software was used to study supporting technology of deep soft rock roadway,and the optimal supporting parameters,reserved yield space and secondary support strength of soft rock roadway were obtained.The research provided technical support for the optimization of roadway support parameters in the later stage.