金口岭矿区地应力测试分析

为了优化金口岭铜矿矿区开采顺序和巷道设计，采用三维套孔应力解除测量计和空心包体应变计，结合现场围压试验，根据弹性理论计算出矿区原岩应力，得到矿区原岩应力大小、方向等参数及其分布规律。结果表明，每个测点最大主应力方向均接近水平方向，与区域构造应力场最大主应力的方向基本一致；最小主应力接近于垂直方向，三个主应力均为压应力，没有出现拉应力，与我国地应力实测得到的普遍规律相同，该方法可以为其他类似工程的地应力测试提供参考依据。

Analysis of ground stress measurement and results for Jinkouling mining area

To optimize mining sequence and roadway design of Jinkouling copper mine, we calculate original rock mining stress and acquire its magnitude and direction and their distribution pattern with 3D borehole to relief meter, hollow inclusion strain, surrounding pressure test, and elasticity theory. Results show that maximum main stress direction of each measurement point approximates to horizontal direction, consistent with regional tectonic stress direction. However, minimum main stress direction is close to vertical direction. The three main stresses are all compressive stress, no tensile stress, identical to the measurement of Chinese universal ground stress. The method provides a reference for other similar engineering stress test.