利用岩石的Kaiser效应对某矿地应力分布规律的研究

Study on the law of stress distribution of a Certain Coal Mine by using Kaiser effect of rock

通过对某矿15101运输顺槽、15101回风顺槽、15106运输顺槽、15106回风顺槽四个地点定向取样,并对四个定向岩样钻取六个方向的定向岩芯,利用声发射岩石的Kaiser效应得到了该矿三个方向的应力大小及方向。得出了如下结论:该矿15号煤层总体上属于中低等应力区域,整体上随着埋深的增加变大。而造成测试中水平主应力偏大的主要原因是由于这四个测点处于向斜构造的边缘,且有其它构造的影响,地应力分布复杂,致使构造应力大于垂直应力。

Based on the 15101 mine transport entry, 15101 return air entry, 15106 transport entry, 15106 air return entry four place orientation sampling, drilled the directional samples to take the rock core from six directions, using Kaiser effect of rock acoustic emission got the mine three direction stress and the direction. And reached the following conclusion： the mine No. 15 coal seam belongs generally to low stress area, on the whole, with the increase in depth becomes large. In the test, the main reason that caused the horizontal principal stress too large is the stress of these four measuring points in the syncline edge, and suffered the influence of other structures, the stress distribution is complex, resulted the tectonic stress was larger than the vertical stress.