矿井深部三维地应力场测量与特征分析

针对姚桥煤矿-800m水平深部巷道破坏严重，采用岩石Kaiser效应测量方法，对该矿进行了地应力场测量。通过在定向岩心6个特殊方向取样，经声发射试验得到了各方向的单个应力，经计算得出了原岩主应力的大小及方向等参数。结果表明：-800m水平最大主应力为19．00MPa，属中高应力区，存在一定的构造应力。经-650m水平与-850m水平测量结果比较，得到了姚桥煤矿以-800m为界，上部岩层主要受构造应力控制，-800m以下以自重应力为主。

Analysis on Measurement and Features of Deep Mine 3D Ground Stress Filed

According to the serious failure occurred in the-800 m level deep mine roadway of Yaoqiao Mine,a rock Kaiser effect measuring method was applied to the mine ground stress measurement.With the six special direction sampling of the directional cores,the single plus stress value in each direction was obtained with the acoustic emitting experiments.The size and direction of the in-situ principal stress was obtained with the calculation.The results showed that the max principal stress of the-800 m level was 19.00 MPa and the level was a medium high stress zone.Certain structure stress was existed in the-800 m level.In comparison with the measured results between the-650 m level and the-850 m level,the-800 m as the boundary of Yaoqiao Mine was obtained.The overlying strata were mainly controlled by the structure stress and the strata below-800 m would be controlled by the self weight stress mainly.