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用大量的实际数据分析、论证了岩溶塌陷影响因素及影响程度 ,桂林市西城区岩溶塌陷灾害严重且典型 ,其覆盖层特征、岩溶发育程度、地质构造和地下水等自然因素是影响岩溶塌陷的基本因素 ,而地表水和工程活动的影响主要起加速和诱发作用 ,通过改变塌陷的基本条件而加速塌陷的形成。在此基础上 ,建立了西城区模糊层次结构预测模型 ,模型包括了 3个层次 (目标层、条件层、因子层 ) ,6个条件 (岩溶、覆盖层、构造、水文、地貌、人为 )共 19个因子 ,对西城区岩溶塌陷进行了预测并划分为稳定区、基本稳定区、次不稳定区、不稳定区和极不稳定区共 5个区。
A large number of actual data are used to analyze the influencing factors and influence degree of karst collapse. The karst collapse hazard in Xicheng District of Guilin is serious and typical. The natural factors such as the characteristics of cover, the degree of karst development, geological structure and groundwater are the basic factors affecting the karst collapse Factors, while the impact of surface water and engineering activities are mainly accelerated and induced by the collapse of the basic conditions to speed up the formation of collapse. On this basis, the fuzzy hierarchy structure prediction model of Xicheng District is established. The model includes three levels (target level, condition level and factor level), six conditions (karst, overburden, structure, hydrology, physiognomy and man-made) 19 factors, the karst collapse in Xicheng District was predicted and divided into five areas: stable area, basic stable area, sub-unstable area, unstable area and extremely unstable area.