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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

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

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.

Accession: 018434122

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