云南某高速公路沿线弃渣场稳定性评估验算与分析

Stability Evaluation Checking Calculation and Analysis of Abandoned Dreg Site along one Yunnan Highway

以云南某高速公路沿线的4个弃渣场为工程案例,对对弃渣场稳定性进行了定量分析,结果表明:弃渣场在挡墙、截排水沟、坡面植被措施下,发生滑坡、泥石流等地质灾害的可能性小,现状下基本稳定。通过理正岩士7.0软件,采用圆弧滑动法,计算出各弃渣场主轴滑动方向剖面模型在正常应用(天然工况)、非常应用(地震工况、暴雨工况)下的最小稳定安全系数,计算结果均大于抗滑稳定安全系数,故4个弃渣场在天然、地震、暴雨工况下均处于稳定状态。

Four abandoned dreg sites along one Yunnan highway were taken as the engineering case in this paper.The quantitative analysis of stability of abandoned dreg site was carried out.The results show that the following measures that retaining wall,intercepting channel,and slope vegetation were taken for the abandoned dreg sites,which reduced the possibility of geological disasters like landslides,debris flow,and so on.By using of LizhengYanshi 7.0 software,the circular sliding method is adopted to calculate the smallest stable safety factor under normal operation conditions(natural conditions),and abnormal operation conditions(earthquake operating conditions,heavy rain conditions),the calculation results all larger than anti-slip stability safety factor,so four abandoned dreg sites are all in stable states at natural,earthquake,heavy rain working conditions.