软质岩边坡滑坡成因分析及综合整治措施研究

Landslide at a Soft Rock Slope and Its Integrated Mitigation Measures

边坡稳定是岩土工程中一个比较复杂的问题,在影响边坡稳定的众多因素中,水是导致边坡失稳的主要诱发因素。结合湖南某铁路工程软质岩工程滑坡实例,开展了滑坡成因分析及综合整治措施研究。结果表明:降雨入渗造成坡体一定深度范围内土体含水率增大,抗剪强度急剧下降,最终导致了滑坡的发生。针对滑坡的整治应充分认识其变形特征、形成原因、发展趋势等,选取合理的岩土特性指标参数,针对不同工况进行设计验算,采用支挡、减载、反压、截排水等多种措施相结合的综合治理方案。

Slope stability is a relatively complicated problem in geotechnical engineering.Among many factors that affect the slope stability,water is the main inducing factor that affects the slope instability.This paper presents the analysis of the landslide in a soft rock slope and its mitigation methods.The results show that the infiltration of rainwater caused the increase of the moisture content in soil and the sharp decrease of shear strength of the soil within a certain depth of the slope,resulting in the landslides.In order to mitigate the landslide,the deformation characteristics,reasons,development trends,etc.should be fully evaluated,and the appropriate geotechnical characteristics indices should be analyzed and selected.In addition,the combination of retaining structure,load reduction,back pressure,intercepting and drainage measures should be adopted based on different working conditions.