池州某厂区山体边坡破坏机理及治理研究

Study on Failure Mechanism and Treatment of Mountain Slope in a Factory Area of Chizhou

针对安徽池州某工程场地山体边坡,首先分析了该边坡失稳机理,再通过极限平衡法对滑体不同阶段的稳定性进行了计算,验证了边坡工程地质模型和力学参数取值的合理性。结合该边坡变形破坏的分析结果与相关技术规范,确定了工程治理方案。研究结果表明:边坡体内部存在顺坡向强风化碎裂泥岩、坡脚开挖造成边坡失去支撑、地表水排泄不及时是导致边坡失稳的主要原因;对坡脚基坑进行回填并反压坡脚可以有效控制边坡的滑移,并结合采用削坡减载的治理措施,可以满足边坡的安全性要求。

Aiming at the mountain slope of an engineering site in Chizhou,Anhui Province,the instability mechanism of the slope is first analyzed,and then the stability of the sliding body at different stages is calculated by the limit equilibrium method,which verifies the rationality of the geological model and mechanical parameters of the slope engineering.Further combined with the analysis results of the slope deformation and failure and related technical specifications,the engineering treatment scheme was determined.The results show that the main causes of slope instability are the existence of strongly weathered cataclastic mudstone in the slope,the loss of support caused by slope toe excavation,and the untimely discharge of surface water.Backfilling the foundation pit at the foot of the slope and back-pressing the foot of the slope can effectively control the slip of the slope.Combined with the treatment measures of cutting slope and reducing load,the safety requirements of the slope can be met.