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基于铜山铜矿地质、地形条件,建立了矿区三维有限元计算模型,借助FLAC3D软件和地应力实测资料,基于应力边界法对铜山铜矿三维初始地应力场进行了拟合,得到的地应力场模拟值与实测值相近,实测点处最大主应力、最小主应力、中间主应力与实测值分别相差0.90,.3,0.2 MPa。分析得知,铜山铜矿原岩应力属构造应力场型。
Based on the geology and topography of Tongshan Copper Mine, a three-dimensional finite element model of mining area was set up. By means of FLAC3D software and measured data of ground stress, the three-dimensional initial geostress field of Tongshan Copper Mine was fitted based on stress boundary method. The simulated values of stress field are similar to the measured values. The maximum principal stress, minimum principal stress and intermediate principal stress at measured points differ from the measured values by 0.90, .3 and 0.2 MPa respectively. Analysis shows that the original rock stress at Tongshan Copper Mine is a tectonic stress field.