【摘要】 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。更多还原

【Abstract】 Based on the global positioning system(GPS) monitoring data from 2003 to 2008,tendencies of general deformation of the open-pit,No.1 Mine of Jinchuan Nickel Mine,are analyzed and compared according to spatial and temporal distribution;ground subsidence and horizontal displacement features of the mine area as well as the subsidence and horizontal displacement characteristics of the prospecting line varying with time are obtained.Deformation laws of rock mass due to transform from open-pit to underground mining in high stress area,where horizontal tectonic stress is dominant,are studied in comparison with deformation rules of the open-pit of transition period;theoretical analysis and numerical simulation are introduced to explain the reason of the difference.The results are conducive to understand the characteristics of rock mass movement and failure caused by transition from open-pit to underground mining and to guide safe production in mine area.更多还原