3原地应力状态为确定矿区的原地应力状态，采用了三轴套取岩心应力测量方法“’。试验是在地面下600m深处的井底桐室附近进行的（图2）。这个深度大致相当于H－W矿主矿体的开采水平的深度。采用科学工业研究委员会（CSIR）三轴应变仪进行了3次套取岩心测试工作。测试结果用作应 3 In-Situ Stress State In order to determine the in-situ stress state of the mining area, a triaxial sleeve core stress measurement method was used. "The test was carried out near the bottom room at a depth of 600 m below the ground (Figure 2) Roughly equivalent to the depth of exploitation at the main orebody of the H-W mine.The core-set test was conducted three times using a three-axis strain gauge from the Scientific Research Council for Industry (CSIR)