基于组合赋权和云模型的基坑边坡稳定性评价

Stability Evaluation of Foundation Pit Slope Based on Combination Weighting and Cloud Model

针对基坑边坡稳定性评估的模糊性,基于组合赋权和云模型理论,本文先采用改进的层次分析法、CRITIC算法对评价指标进行主、客观赋权,并通过最小鉴别信息理论计算组合权重,再利用云模型理论确定基坑边坡的稳定性等级。应用该模型进行了案例研究,结果表明3个基坑边坡的稳定性都处于一般稳定,并提出了防护措施。该模型对基坑边坡进行稳定性评价更加准确、科学,具有一定的优越性。

In view of the fuzziness of foundation pit slope stability evaluation,based on the combination weighting and cloud model theory,this paper first uses the improved analytic hierarchy process and CRITIC algorithm to give subjective and objective weights to the evaluation indicators,calculates the combination weight through the minimum identification information theory,and then uses the cloud model theory to determine the stability grade of foundation pit slope.A case study was conducted using this model,and the results showed that the stability of the three foundation pit slopes was generally stable,and protective measures were proposed.This model is more accurate and scientific in evaluating the stability of foundation pit slopes,and has certain advantages.