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地面沉降是一个多因素耦合的复杂系统。本文针对地面沉降的复杂性、模糊性及不确定性,构造了基于熵权的模糊综合评价模型,通过熵权使权重由主观判断转为由各指标数据之间的关系来确定,根据自然灾害风险分析的基本原理从5个方面选取18个评价因子,定量地对研究区域进行危害性评价。评价结果表明,熵权模糊综合评价法是科学可行的,为地面沉降危害趋势预测及危害等级划分提供了良好的分析方法,并有较高的应用价值。
Land subsidence is a complex system of multi-factor coupling. In this paper, aiming at the complexity, fuzziness and uncertainty of land subsidence, a fuzzy comprehensive evaluation model based on entropy weight is constructed. The entropy weight is used to change the weight from subjective judgment to the relation between each index data. According to the natural disaster The basic principle of risk analysis Select 18 evaluation factors from 5 aspects, and quantitatively evaluate the harm of the research area. The evaluation results show that the entropy weight fuzzy comprehensive evaluation method is scientifically feasible, which provides a good analytical method for the prediction of the hazard tendency of land subsidence and the classification of the hazard level, and has high application value.