模糊数学方法在滑坡稳定性评价中的应用

Application of Fuzzy Mathematics Method on Landslide Stability Assessment

摘要:

针对滑坡发生系统的复杂性和不确定性,用模糊数学方法从地层岩性、地质构造、地形地貌、地下水和降雨5个方面,分2个层次9个因素建立了滑坡稳定性评价的模糊综合评判模型,确定了各因素等级标准和权重。以G212线陇南段沿线的6个主要滑坡为例进行了稳定性综合评价。结果表明,秦峪滑坡的稳定性最差,风安山和石阏子滑坡次之,清水子、固水子和鲁班崖滑坡稳定性相对较好。

Abstract:

For the complexity and uncertainty of landslide system, the fuzzy synthetic judgment model of landslide stability assessment is set up using fuzzy mathematics method, which is composed of 5 aspects （lithology, geologic structure, landform, groundwater, and rainfall）in 2 levels with 9 factors. The grading standard of each factor, as well as the proportion, is put forward. As the examples, 6 main landslides along G212 highway in Longnan, Gansu province, are assessed. The results of assessment show that the worst one is at Qinyu, the next are Feng＇anshan and Shi＇ezi, and the relatively better ones are Qingshuizi, Gushuizi and Lubanya.