露天转地下开采对矿区地表铁路安全的影响

摘要

采用概率积分法和数值模拟分别对某硫铁矿露天转地下开采区域上方露天边坡边缘的货运铁路沉降变形进行了计算和分析,并根据分析结果优化了开采顺序,降低了地下开采对露天坑底及上盘边坡的影响,使铁路路基沉降位移有效减小,对合理开发利用资源和保护地表设施安全提供了理论支持.%In the paper,the subsidence and deformation of the mine railway at the edge of the open pit slope in the transition zones from open pit to underground mining in a certain pyrite mine were calculated and analyzed by using probability integration method and numerical simulation.According to the analysis results,the mining subsequence was optimized,which lowered the influences of the underground mining on the open pit bottom and the upper slope and effectively reduced the displacement of railway embankment.The research provides a theoretical support for the rational exploitation of resources and the protection of surface facilities.