辽宁首钢硼铁矿业有限公司露天采场边坡稳定性分析

The Analysis on the Slope Stability of Opencast Mining by Liaoning Shougang Boron Iron Co., Ltd(LSBI)

针对辽宁首钢硼铁矿业有限公司露天采场开采深度大,边坡失稳滑塌问题日益突出的现状,通过工程钻探、大型剪切试验等手段得到各岩层属性参数,利用FLAC^(3D)软件对该边坡进行三维数值模拟,分析应力应变关系,得出变形较大及应力集中区域,通过与野外地质调绘确立的边坡破坏模型进行对比分析,验证本次数值模拟模型的可靠性,为边坡进一步治理提供依据。得出结论:辽宁首钢硼铁矿业有限公司露天采场边坡坡体尚未形成连贯破坏区,局部加固后可继续向下开采。

Aimming at the increasingly deep open mining and serious landslide of side slopes in LSBI, the rock parameters are acquired through drilling, shearing and other methods. The FLAC^3D is used for 3D number simulation and analysis of the stress-strain relationship, and the main area of maximum stress and deformation is obtained. The results have been proved reliable after the comparative analysis of the FLAC^3D simulation and the field mapping, thus providing evidence for further measures to the sliding side slops. The conclusion is as follows, the open pits are suitable for deeper exploration because no connection among the damaged areas has appeared yet.