广西大新锰矿工业场地边坡稳定分析

在分析大新锰矿工业场地边坡施工情况的基础上,提出新的设计方案,并通过强度折减法的FLAC3D数值模拟的方法,计算了边坡的应力、位移、剪应变增量与速度矢量分析、塑性区和安全系数,在此基础上分析和讨论确定大新锰矿工业场地边稳定性较好,新的设计方案所设计的边坡符合技术规范的要求。在安全经济的基础上提出新的边坡设计方案:砂土台阶坡面角为38(°)、岩质台阶坡面角50(°)、清扫平台8 m、安全平台5 m、最终边坡角41(°)、并段台阶高度96 m。根据边坡稳定性分析的结果可以有效的指导边坡的设计方案制定和现场施工,确保施工方案安全可靠。

An Analysis of Slope Stability at Industrial Site of Daxin Manganese Ore in Guangxi

On the basis of analyzing the slope construction of the industrial site in DaXin Manganese Mine,a new design scheme is proposed.The stress,displacement,shear and strain increment and velocity vector will be in an analysis.We think that the plasticity zone and safety coefficient are calculated by means of the method of FLAC3D numerical simulation in the intensity reduction method.The analysis and discussion determine show us that the edge stability of the industrial site of the large new manganese ore is good.The slope designed by the new design scheme conforms to the requirements of the technical specifications.On the basis of the safety economy,the new slope design scheme is that the slope angle of the sand step is 38 degrees,the slope angle of the rock step is 50.The cleaning platform is 8 m,the safety platform is 5 m,and the final slope angle is 41.And the height of the step is 96 m.According to the results of slope stability analysis,we can effectively guide the design and construction of slope,as ensures the safe and reliable construction scheme.