基于模糊数学和Geo-Studio的滑坡稳定性综合评价

发布时间：2018-03-09 21:52

本文选题：综合评价　切入点：土地梁子滑坡　出处：《科学技术与工程》2017年23期 　论文类型：期刊论文

【摘要】：在滑坡的稳定性评价中一般均存在不确定因素,如力学参数的选取、滑坡影响因素以及主断面的选择等,通常单一方法很难综合考虑这些因素。本文在对三峡库区某滑坡体地质及工程地质条件系统分析基础上,采用模糊数学综合评价对其稳定性进行了分析,考虑模糊数学方法中的隶属函数以及权重确定具有主观性特点,是一种半定量-定性评价。因此,采用Geo-Studio数值模拟软件对其进行稳定性定量分析。综合研究结果表明:采用模糊数学方法评价且根据最大隶属度原则,得出该滑坡处于欠稳定状态;数值模拟表明该滑坡在天然状况下稳定性系数最大,处于欠稳定状态,降雨和地震状况下的稳定性系数均会降低。两种方法得到的结果具有一致性,并与现场勘查的工程实际相吻合,表明这两种评价方法的综合运用更加合理可行。
[Abstract]:In the evaluation of landslide stability, there are some uncertain factors, such as the selection of mechanical parameters, the influence factors of landslide and the selection of main section, etc. It is difficult to consider these factors by single method. Based on the systematic analysis of the geological and engineering geological conditions of a landslide body in the three Gorges Reservoir area, the stability of the landslide body is analyzed by comprehensive evaluation of fuzzy mathematics. It is a semi-quantitative and qualitative evaluation to consider membership function and weight determination in fuzzy mathematics method, which is subjective. Geo-Studio numerical simulation software is used to analyze the stability of the landslide. The comprehensive research results show that the landslide is in an unstable state according to the principle of maximum membership degree and fuzzy mathematics method. The numerical simulation shows that the stability coefficient of the landslide is the largest in the natural condition, and it is in the unstable state, and the stability coefficient of the landslide will decrease under the condition of rainfall and earthquake. The results obtained by the two methods are consistent. It is in agreement with the engineering practice of site survey, which shows that the comprehensive application of these two evaluation methods is more reasonable and feasible.
【作者单位】：中国矿业大学资源与地球科学学院;江苏交科集团股份有限公司;中国地质调查局水文地质环境地质调查中心;
【基金】：国家重点基础研究发展计划(973)项目(2013CB036003)资助
【分类号】：P642.22

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