论文部分内容阅读
地下采矿活动引起上覆岩层移动变形和破坏 ,对覆岩变形破坏进行监测 ,可以为采矿设计和安全生产提供可靠的技术保障 .本文从对应于实际地层介质的相似材料物理模型实验出发 ,探讨了模拟实验的相似条件和可行性 ,进行了采矿活动不同时期覆岩电阻率特征变化的动态测试 ,结合实验数据进行反演计算 ,最后获得覆岩变形破坏与电阻率变化的响应关系 .实验结果表明 ,覆岩变形和破坏必然造成地层介质电性特征的变化 ,不同破坏带的破坏程度不同 ,电阻率变化响应特征不一样 ,两者是一一对应的 .利用电阻率方法监测覆岩变形和破坏是完全可行的 .
The underground mining activities cause the deformation and destruction of the overlying strata and monitor the deformation and failure of the overlying strata, which can provide reliable technical support for the mining design and safety production.This paper starts from the experiment of similar material physical model corresponding to the actual formation medium, The similar conditions and feasibility of the simulation experiment were carried out, and the dynamic test of the change of the resistivity of the overburden rock during different periods of mining activity was carried out. The inversion calculation was carried out with the experimental data, and finally the response of the overlying rock deformation and resistivity change was obtained. , The deformation and destruction of the overlying strata will inevitably lead to the change of the electrical properties of the strata. The damage degree of different strata is different, and the response characteristics of resistivity change are different, so the two are one-to-one correspondence.The resistivity method is used to monitor the deformation and failure of strata Is entirely feasible.