某金属矿原岩应力测量及地应力分布规律研究  

In-situ Stress Measurement and In-situ Stress Distribution in a Metal Mine

作　　者：马瑞峰 黄聪 刘畅 王忠盛 Ma Ruifeng;Huang Cong;Liu Chang;Wang Zhongsheng(Changsha Institute of Mining Research Co.,Ltd.,Hu'nan,410012;State Key Laboratory of Safety Technology of Metal Mines,Hu'nan,410012;Hu'nan Engineering Technology Research Center of Mine Geological Hazard Control and Environmental Reconstruction,Hu'nan,410012;Jiangxi Tungsten Holding Group Co.,Ltd.,Jiangxi,341515)

机构地区：[1]长沙矿山研究院有限责任公司,湖南410012 [2]金属矿山安全技术国家重点实验室,湖南410012 [3]湖南省矿山地质灾害防治与环境再造工程技术研究中心,湖南410012 [4]江西漂塘钨业有限公司,江西341515

出　　处：《当代化工研究》2024年第21期33-35,共3页Modern Chemical Research

摘　　要：为探明江西某矿区内原岩应力场基本情况,获得准确的应力分布特征,采用套孔应力解除法对矿山主要生产区域进行了原岩应力测试。测试结果表明:构造应力是该区域原岩应力的第一影响因素;矿区内最大主应力方向为南北方向,侧应力系数为2.1~2.6;各测点水平应力分量σy均大于水平应力分量σx,说明矿山开采区域地应力场分布具有明显的方向差异性;矿区各中段最大主应力及垂直应力随中段深度增加而增加。这些研究成果对后续采矿工程设计、支护优化、围岩稳定性分析计算与保证矿井安全生产具有极大的指导意义。The basic situation of primary rock stress field in a mine area in Jiangxi Province was investigated and accurate stress distribu-tion characteristics were obtained.The primary rock stress test was carried out in the main production area of the mine by using the hole stress relief method.The test results show that the structural stress is the first factor affecting the stress of the original rock in this area.The maximum principal stress direction in the mine is north-south,and the lateral stress coefficient is 2.1~2.6.The horizontal stress componentσy is greater than the horizon-tal stress componentσx at each measuring point,which indicates that the distribution of the geostress field in the mining area has obvious directional differences.The maximum principal stress and vertical stress increase with the depth of the middle section.These research results have great guiding significance for the subsequent mining engineering design,support optimization,stability analysis and calculation of surrounding rock and ensuring mine safety production.

关 键 词：套孔应力解除法 原岩应力 空心包体应变计 最大主应力 

分 类 号：TD163[矿业工程—矿山地质测量]