弓长岭铁矿排土场边坡稳定性评价

露天采矿剥离岩土的排弃和排土场的形成,关系到矿山生产安全和人员生命财产安全.排土场稳定性是露天矿安全评价的核心内容,也是矿山安全管理的重点.以弓长岭露天铁矿大阳沟排土场边坡为例,在岩土工程勘察和物理力学性质分析基础上,通过极限平衡法和有限单元法相结合,对排土场边坡危险剖面在正常工况和降雨入渗工况下的稳定性进行计算,剖析排土场坡体稳定特征,所得结论对现场排土场具有重要的指导价值和现实意义.

Stability evaluation on waste dump slope of Gongchangling open- pit mine

The abandon of stripped rock - soil in open mining and formation of waste dump is related to the mine production safety,personnel life and property security.Dump stability is the core content of open - pit mine safety evaluation,it is also the focus of the mine safety management.Aiming at waste dump slope of Gongchangling open - pit mine,based on geotechnical investigation and analysis on the physical - mechanical properties,and through limit equilibrium method and finite element method,the stability analysis models of waste dump are built,stability calculation of waste dump slope is conducted in normal and rainfall infiltration circumstances,and the stability characteristics of dump slope is analyzed.This paper makes important conclusions and suggestions.It has important guiding and actual significance for the dump engineering in site.