基于组合赋权灰色模糊理论的边坡地震稳定性研究

STUDY ON SLOPE SEISMIC STABILITY BASED ON COMBINING WEIGHTS WITH GREY FUZZY THEORY

针对边坡地震稳定性评判中影响因素的不确定性和信息的不充分性,为提高判别结果准确性,构建灰色模糊边坡地震稳定性综合评判模型。利用隶属函数和点灰度建立综合评判矩阵,通过熵权法和改进的AHP法进行组合赋权,减少单一赋权缺陷,最后用置信度识别准则判定边坡地震稳定性等级。通过对16个地震边坡实例进行评判,与灰色聚类法和未确知测度法相比准确率更高。研究表明,组合赋权灰色模糊综合评判模型是有效且可行的,为边坡地震稳定性综合评判提供一种新方法。

In view of the uncertainty of influence factors and the inadequacies of information in evaluation of slope seismic stability,to improve the discriminant result accuracy,a grey fuzzy comprehensive evaluation model of slope seismic stability was set up. The measure function and gray level were used to establish comprehensive evaluation matrix,through the entropy weight method and AHP method to improve performance,reduce the single weight defects,finally a confidence level recognition criteria was used to judge the slope seismic stability. Through the evaluation of 16 seismic slope instances,higher accurate rates are tot as compared with the grey clustering method and the method of unascertained measure,research has shown that combined weight with grey fuzzy comprehensive evaluation model is effective and feasible,which provides a new method for the slope seismic stability evaluation.