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为解决官地矿22608工作面底抽巷在受到近距离煤层多次动压影响下巷道支护难题,首先进行了地质力学测试,测试结果显示:底抽巷所处位置地应力属于中等应力水平;巷道顶板4m范围内岩层为泥岩、节理裂隙发育,强度低,平均为22.65 MPa;根据地质力学测试结果,采用数值模拟方法分析了巷道在受近距离煤层多次动压影响时的应力分布和变形状况,最后提出了全断面高预应力强力短锚索支护技术,取得了良好的效果。
In order to solve the problem of roadway support under the influence of multiple dynamic pressure in coal seam near the coal seam at the bottom of No.2608 working face of Guandi Mine, the geomechanical test was carried out firstly. The test results show that the ground stress at the bottom pumping lane belongs to medium stress level ; Rock strata within the range of 4m in the roof of the roadway are mudstone with developed joint joints and fractures with an average strength of 22.65 MPa; according to the results of geomechanical test, the stress distribution and the distribution of stress in the roadway affected by the multiple dynamic pressure of the close coal seam are analyzed by numerical simulation method Finally, the full-face high prestressed strong short cable anchor support technology is put forward and good results have been achieved.