摘要
深部高地应力是诱发复杂岩石力学问题和工程地质灾害的重要因素,原岩应力测量结果有助于全面了解矿区地应力分布情况。采用基于空心包体应变计的应力解除法对玲珑矿区3个中段进行了地应力测量。结果表明:玲珑金矿深部矿区水平主应力随埋藏深度的增加而增大,3个中段的最大水平主应力值分别为32.53 MPa、39.21 MPa、57.22 MPa,中间主应力值为15.54 MPa、32.74 MPa、30.24 MPa,最小主应力值为13.21 MPa、21.88 MPa、27.93 MPa;通过陶振宇判据评价,-270 m中段围岩有轻微岩爆倾向;-470 m和-670 m中段围岩有中等岩爆倾向。
High ground stress in deep depth is an important factor to induce complex rock mechanics problems and engineering geological disasters.In-situ rock stress measurement results are helpful to understand the distribution of ground stress in mining areas.The stress relief method based on the hollow inclusion strain gauge is used to measure the ground stress in the three middle sections of Linglong mine.The results show that:The horizontal principal stress of the deep mining area of Linglong Gold mine increases with the increase of burial depth.The maximum horizontal principal stress values of the three middle sections are 32.53 MPa,39.21 MPa,57.22 MPa,the middle principal stress values are 15.54 MPa,32.74 MPa,30.24 MPa,and the minimum principal stress values are 13.21 MPa,21.88 MPa,27.93 MPa.According to the evaluation of Tao Zhenyu criterion,the surrounding rock in the middle section of-270 m has a slight rockburst tendency.The surrounding rock in the middle section of-470 m and-670 m has a moderate rock burst tendency.
作者
张爱平
刘正祥
罗丹青
刘锦州
安傲清
刘昆
Zhang Aiping;Liu Zhengxiang;Luo Danqing;Liu Jinzhou;An Aoqing;Liu Kun(Shandong Gold Mining(Linglong)Co.,Ltd.,Shandong,265433;Sichuan Shangzhou Industrial Co.,Ltd.,Sichuan,614700)
出处
《当代化工研究》
2025年第10期45-47,共3页
Modern Chemical Research
关键词
深部地应力
空心包体应变计
地应力测量
岩爆倾向性
deep ground stress
hollow inclusion strain gauge
in-situ stress measurement
rockburst tendency
