云南丽江某高边坡稳定性评价与治理措施分析

STUDY ON STABILITY EVALUATION AND TREATMENT MEASURES OF A HIGH SLOPE IN LIJIANG,YUNNAN

随着人类工程活动的开展导致了越来越多的高边坡工程出现,高边坡失稳现象日益频发,造成了巨大的损失,高边坡的稳定性问题成为了学者们研究的热点。研究区为丽江古城西南水泥有限公司5000 t/d熟料水泥生产线项目,通过地质勘查,分析了项目区边坡现状特征,选取边坡典型性剖面,并评价其在天然、地震、暴雨3种工况下的稳定性,得出最危险滑动面及稳定性系数。根据边坡稳定性计算结果,提出了削坡减载、锚杆(索)、格构、截排水、坡面绿化等边坡治理措施。

The study area is located in lijiang ancient city in yunnan province,southwest of lijiang ancient town,for the proposed cement co.,LTD.5000 t/d clinker cement production line(industrial upgrading,intelligent manufacturing)project engineering leveling formation of the high slope,high slope destroyed the original natural state of slope stability,the proposed cement plant construction,road,such as personnel caused serious security threat.The basic characteristics of the high slope in the study area were analyzed by geological exploration on site,and the typical section of the slope was selected to evaluate the stability of the slope under natural,rainstorm and earthquake conditions,and the most dangerous sliding surface and stability coefficient were obtained.The calculation results show that the slope stability coefficient can not reach the safety coefficient required by the specification in the rainstorm condition.Slope cutting and load reduction,anchor rod(cable),grid structure,interception and drainage were adopted to treat the slope,and the stability of the slope after treatment was evaluated.The analysis results show that the slope stability coefficient meets the safety coefficient required by the specification and the treatment measures are effective.