基于信息熵的模糊评价法及其在滑坡危险性评价中的应用

发布时间：2018-03-18 15:36

本文选题：滑坡　切入点：模糊综合评价　出处：《长江科学院院报》2017年06期 　论文类型：期刊论文

【摘要】：随着滑坡灾害的发生日益频繁,且严重威胁着人类的生命财产安全,滑坡的防灾减灾工作越来越受到关注,而滑坡的危险性等级评价是其中的一个关键工作。模糊综合评价法是滑坡危险性评价工作中较常见的一种方法,其难点之一是确定各评价指标的权重。将成功应用于其他领域的基于信息熵的模糊评价法引入滑坡危险性的评价中,利用信息熵原理来确定各指标的权重,赋权结果较为客观,能消除主观随意性;构建的评价指标体系中,在选取了稳定性评价指标的基础上增加了易损性指标,指标体系较全面,能有效避免"有灾无害"的评价结果,使得评价结果更为合理。以湖北省神农架地区为例,运用结合信息熵的模糊综合评价模型对其中的5个典型滑坡进行了危险性评价,评价结果与该地区的滑坡灾情基本相符。可将研究成果应用于滑坡的危险性评价中,为滑坡的防灾减灾提供依据。
[Abstract]:With the frequent occurrence of landslide disasters and the serious threat to the safety of human life and property, more and more attention has been paid to the prevention and mitigation of landslides. The evaluation of landslide risk grade is one of the key tasks. Fuzzy comprehensive evaluation method is a common method in landslide risk assessment. One of its difficulties is to determine the weight of each evaluation index. The fuzzy evaluation method based on information entropy, which is successfully applied in other fields, is introduced into the evaluation of landslide risk, and the weight of each index is determined by using the principle of information entropy, and the result of weighting is more objective. In the evaluation index system, the vulnerability index is added on the basis of selecting the stability evaluation index, and the index system is more comprehensive, which can effectively avoid the evaluation result of "harmless disaster". Taking Shennongjia area of Hubei Province as an example, the fuzzy comprehensive evaluation model combined with information entropy is used to evaluate the risk of five typical landslides. The evaluation results are basically consistent with the landslide disaster situation in this area. The research results can be applied to the landslide risk assessment and provide the basis for the landslide disaster prevention and mitigation.
【作者单位】：武汉大学土木建筑工程学院;
【基金】：国家科技支撑计划课题项目(2014BAL05B07)
【分类号】：P642.22

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