滑坡稳定性综合区划研究

滑坡的稳定性分区和影响因子分析是工程治理区划的关键问题。构建模糊聚类–灰色关联综合决策模型,可实现其稳定性综合区划研究。基于官家滑坡实际地质条件,进行稳定性模糊聚类分区,并结合详细地质调查分析和滑坡属性特征研究将其整体分为深层易滑区和浅层坍塌区,即碎石土深层滑动区和含碎石黏土浅层滑坡及局部坍塌区;再对各区构建影响因子决策矩阵进行灰色关联分析,判决各因子对滑坡稳定性的影响程度。结果表明:易滑区主要影响因子是滑体重量、地下水、下滑推力,坍塌区主要影响因子是下滑推力,并且经工程治理评价证实综合决策模型对滑坡工程治理区划具有十分重要的指导意义。

Integrated zonation of landslide stability

Stability subarea and factor analysis of landslides are the key problems of engineering treatment zonation.The stability zonation can be realized by constituting compound decision model of fuzzy clustering and grey correlation analysis.Firstly,based on the geological conditions of Guanjia landslide,the stability zonation is proceeded through fuzzy clustering.By geological investigation and attribute property analysis,the landslide is divided into deep easy skating area and shallow slumping area.It is also said that the gravel soil area which can slide deeply and the gravelly clay area which can slide shallowly or slump partially.Secondly,by taking the factor decision matrix to perform grey correlation analysis,the influence degree of factors is adjudicated.The results indicate that the primary factors of easy skating area are weight,groundwater and sliding force,and the primary factor of shallow slumping area is sliding force.In addition,the compound decision model is confirmed to be of important guiding significance by engineering treatment evaluation.