龙门山矿区套孔应力解除法测定原岩应力

摘要

为优化龙门山矿区开采顺序和巷道设计,原岩应力测量非常必要.文中详细介绍了应用套孔应力解除法测定矿山原岩应力,对龙门山矿区原岩应力进行了实际测定,得到了矿区原岩应力大小、方向等参数及其分布规律,结果显示:矿区原岩应力随深度增加而增大,水平应力为最大主应力,主应力方向与巷道走向基本一致,巷道设计合理.%Measuring rock stress is important for optimizing mining sequence and roadway design of Longmenshan Mining region. Trepanning stress relief method is applied to measure the rock stress of Longmenshan mining region. Stress size, orientation, and their distribution law are obtained. The results show that rock stress increases with the depth. The horizontal stress is the maximum stress. The direction of the principal stress conforms to roadway alignment. The roadway design is reasonable.