厂坝铅锌矿露天边坡及塌陷区恢复治理方案设计

Design of Restoration Treatment Plan for Open Slope and Subsidence Area of Changba Lead-zinc Mine

针对厂坝铅锌矿上部边坡及露天坑底塌陷区的现状问题,通过现场调查,对塌陷区的体积进行估算,采取了尾砂胶结充填体充填塌陷区的治理方案。为了保证上部露天边坡的稳定性,采用对露天边坡充填放坡的治理方案,并对充填放坡后的边坡稳定性进行了分析。分析结果显示,充填放坡后的露天边坡安全系数1.36以上,符合规范要求。

Aiming at the status quo of the upper slope of Changba Lead-zinc Mine and the subsidence area at the bottom of the open pit,the volume of the subsidence area was estimated through on-site investigation,and the treatment plan of the tailings cemented backfill filling and subsidence area was adopted.In order to ensure the stability of the upper open slope,the treatment plan for filling and grading the open slope was adopted,and the stability of the slope after filling and grading was analyzed.The analysis results show that the safety factor of the open slope after filling the grading is more than 1.36,which meets the requirements of the specification.