陕北绥德某黄土边坡稳定性评价及防治措施探讨

ANALYSIS ON STABILITY EVALUATION AND PREVENTION MEASURES OF A LOESS SLOPE IN SUIDE,NORTHERN SHAANXI

以陕北绥德某紧邻工程建设项目场地的黄土边坡为例,通过野外工程地质调绘、岩土工程勘查、室内土工试验和综合整理分析相结合的方法,查明了其相对高差大、原始地形破坏明显、坡面冲刷强烈、坡脚多处临空变形的基本特征。通过分析,认为该边坡变形破坏的主要影响因素有地形地貌、地层岩性、降水及冻融和人类工程活动几个方面。对该边坡进行了稳定性评价,提出了“分级削坡、坡脚支挡、截排水渠、坡面绿化、变形监测”的综合防治措施建议。

Taking the loess slope adjacent to a construction site in Suide in northern Shaanxi as an example,through the combination of field investigation,engineering geological exploration,laboratory soil test and comprehensive analysis,the basic characteristics of the slope are found out,such as large relative height difference,obvious damage to the original terrain,strong slope erosion,and multiple aerial deformations at the foot of the slope.Through analysis,it is concluded that the main influencing factor of slope deformation and failure are topography,formation lithology,precipitation,freeze-thaw and human engineering activities.According to the stability evaluation of the slope,the comprehensive prevention and control measures of“graded slope cutting,slope foot retaining,intercepting drainage canal,slope greening,deformation monitoring”are proposed.