基于模糊层次分析法和熵权法的岩溶发育强度评价方法探讨

Assessment of Karst Development Intensity Based on FAHP and Entropy Weight Method

该文以句容抽水蓄能电站的岩溶现象作为研究对象,用综合定性和定量方法评价了其岩溶发育强度,从地层岩性条件、碳酸盐岩埋藏条件、地质构造条件、地下水条件、地形地貌条件、不良地质现象出发,选取了岩性、岩石结构、岩层产状等共17个影响岩溶发育的评价指标,建立了适合评价岩溶发育强度的指标体系,探讨了综合应用模糊层次分析法和熵权法,来确定各个因素对岩溶发育影响权重的可行性。评价结果显示:地下水径流强度影响权重最大,其次为断层、地层岩性等。将得到的权重值线性加权,得到综合属性测度值,最终判断三个岩溶水文地质单元的岩溶发育强度。将评价结果与实际结果进行对比,验证了该评价模型的可靠性。

This paper takes the karst phenomenon of Jurong Pumped Storage Power Station as the research object,and assesses the intensity of its karst development with comprehensive qualitative and quantitative methods.Starting from the conditions of stratum lithology,carbonate rock burial,geological.structure,groundwater,topography,and adverse geological phenomena,17 evaluation indexes affecting karst development such as lithology,rock structure,and rock production ar selected to establish an index system suitable for evaluating the intensity of karst development.The feasibility of the comprehensive application of the fuzzy analytic hierarchy process(FAHP)and entropy weight method to determine the weights of the influence of each factor on the development of karst is discussed.The evaluation results show that the strength of groundwater flow has the greatest influence,followed by faults and lithological conditons.The weighted values are linearly weighted to get the comprehensive attribute measurements,and the karst development intensity of the three karst hydrogeological units is finally judged.The evaluation results are compared with the actual results to verify the reliability of the evaluation model.