红透山铜矿地应力测量及其分布规律研究

RESEARCH ON IN-SITU STRESS MEASUREMENT AND ITS DISTRIBUTION LAW IN HONGTOUSHAN COPPER MINE

红透山铜矿是国内最深的金属矿山之一,岩爆灾害具有典型性。为了解矿区应力状态及分布特征,开展了应力实测工作,应用空心包体应力解除法进行应力测量。通过现场实测获得该矿区 5 个中段 8 个测点的三维应力状态,最大主应力方向为 NNW～NW,最大主应力值随深度基本呈线形增大,且-767 m 中段不同部位应力值有所变化,最大主应力值可达 50 MPa 左右。

Hongtoushan copper mine is a deeper metal mine with typical rock burst. For understanding the state and distribution of stresses in the mine, in-situ stress measurement is carried out by means of hollow inclusion gauge method. Three dimensional stress state is obtained for five levels and eight sites through in-situ stress measurement. The measurement results indicate that the orientation of the major principal stress is NNW-NW, and the value of it is linerally increased with depth. The in-situ stresses are varied with different positions at -767 m level, and the value of the major principal stress reaches around 50 MPa.