滨海金属矿区域地应力场测量与规律分析  

Measurement of In-situ Stress in Coastal Metal Mine Areas and Its Distribution Law Analysis

作　　者：侯奎奎 郭良银 刘焕新 彭超 张俊 HOU Kui-kui;GUO Liang-yin;LIU Huan-xin;PENG Chao;ZHANG Jun(Deep Mining Laboratory of Shandong Gold Group Co Ltd,Laizhou 261400,Shandong,China;Shandong Key Laboratory of Intelligent Mining of Deep-Sea and Deep-Earth Metal Mines,Laizhou 261400,Shandong,China;Xincheng Gold Mine,Shandong Gold Mining Co Ltd,Yantai 261438,Shandong,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]山东黄金集团有限公司深井开采实验室,山东莱州261400 [2]山东省深海深地金属矿智能开采重点实验室,山东莱州261400 [3]山东黄金矿业股份有限公司新城金矿,山东烟台261438 [4]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿冶工程》2022年第4期22-24,29,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金重点项目(41630642)。

摘　　要：采用应力解除法,使用高精度UPM40岩石三轴应变地应力测定仪对三山岛金矿新立矿区进行了地应力测量。结果显示,矿区水平最大主应力方位为NW向,应力场中以水平最大主应力为主导,水平最小主应力方位与水平最大主应力方位接近垂直;-400 m深度处地应力受构造应力影响有突增现象,地质情况复杂,应当予以关注;6个测点所测最大主应力倾角都近似处于水平,水平最大主应力方位与所在区域地质构造情况吻合,表明所测地应力结果可靠。对6个测点主应力进行线性回归,结果表明,主应力随深度变化呈较好的线性相关,与现有理论相符。矿区地应力在一定程度上抑制了断裂带的导水能力;所测地应力结果可为新立矿区的开采设计提供依据。The in-situ stress was measured for the Xinli mining area of Sanshandao Gold Mine by using stress relief method with a high-precision UPM40 in-situ stress meter for rock triaxial strain. The results show that the stress field in the mining area is dominated by the maximum horizontal principal stress, which is in the NW direction and nearly perpendicular to the minimum horizontal principal stress. A sudden increase is found in the in-situ stress at the depth of-400 m due to the influence of tectonic stress, resulting in complex geological situation there, which should be paid attention to. The maximum principal stress at six measuring points is almost in horizontal direction, and the azimuth of the maximum horizontal principal stress is consistent with the geological structure of the region, which indicates that the measured results of in-situ stress are reliable. The linear regression of the principal stress at six measuring points shows that the principal stress has a good linear correlation with the buried depth, which is consistent with the existing theory. The in-situ stress in the mining area inhibits the hydraulic conductivity of fault zone to a certain extent. It is concluded that the measured results can provide a basis for the design of Xinli mining area.

关 键 词：三山岛金矿 地应力 应力解除法 分布规律 地下开采 海底开采 岩石力学 

分 类 号：TD857[矿业工程—金属矿开采]