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Fuzzy-hierarchy prediction of karst collapse in western Guilin City, Guangxi, China



Fuzzy-hierarchy prediction of karst collapse in western Guilin City, Guangxi, China



Guilin Gong Xueyuan Xuebao = Journal of Guilin Institute of Technology 20(2): 112-116



The karst collapse disaster in the west area of Guilin city is very typical and serious. Based on the clarification of the geological background and the analysis of a good deal of data, this paper specifies the influencing factors and degrees of karst collapse, and then draws a conclusion that the characteristics of over-layer, the degree of karst development and geological structure are basic factors affecting the karst collapse, and that surface water and engineering activities play a speeding and inducing role in the occurrence of karst collapse by changing the basic conditions. On this basis, the paper establishes a fuzzy-hierarchy prediction model, which contains 3 hierarchies, 6 conditions and 19 factors. By the calculation of the model, the west area of Guilin city is divided into five zones: stable area, basic stable area, secondary unstable area, unstable area and extremely unstable area.

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Accession: 018434122

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