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以金川龙首矿为例,基于2003―2008年长达12期的GPS实测数据,按照时空分布比较分析总体变形趋势,得出整个矿区的地表沉降特征、平面位移特征、行线(勘探线)随时间变化的沉降和平面位移特征。据此分析了以水平构造应力为主导的高应力区露天转地下开采引起岩体的变形规律,并与该矿闭坑之初的变形规律比较,通过理论分析的方法对产生差异的原因进行初步解释,并用数值模拟的方法加以验证,其研究结果对认识露天转地下开采引起的岩体移动、破坏特征,指导矿区安全生产有积极意义。
Taking the first Jinchuan Mine as an example, based on the measured data of up to 12 periods in 2003-2008, the overall deformation trend was analyzed according to the spatial and temporal distribution, and the characteristics of surface settlement, plane displacement, row line (exploration line) Subsidence and Plane Displacement Variation over Time. Based on this, the deformation law of rock mass caused by open pit mining in high stress area dominated by horizontal tectonic stress is analyzed and compared with the deformation law at the beginning of the closed pit of the mine, the reason of the difference is analyzed by theoretical analysis Explained and verified by numerical simulation. The results of this study have a positive meaning for understanding the movement and destruction characteristics of rock mass caused by underground mining from open pit and directing mine safety production.