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本文在阐述唐山市岩溶地面塌陷地质灾害情况和产生塌陷的地质条件的基础之上，分析了产生岩溶地面塌陷的原因。指出超量开采岩溶地下水是唐山市岩溶塌陷产生的主要原因所在。地震不是唐山市岩溶塌陷的直接致塌原因，但是地震作用破坏了盖层土体的连续性而使其更易破坏。文中提出了分别用静态条件和动态条件进行岩溶地面塌陷危险区划分的原则和单因子图迭置分析的危险区划分方法，并研制了岩溶地面塌陷区划的软件系统ＫＬＣ。以１９９０年地下水流场条件为基础，对唐山市岩溶地面塌陷进行了迭置分析和分区评价
In this paper, based on the geological disaster situation of karst ground collapse in Tangshan City and the geological conditions of the collapse, the causes of karst ground subsidence are analyzed. It is pointed out that the overexploitation of karst groundwater is the main cause of karst collapse in Tangshan City. The earthquake was not the direct cause of the collapse of karst collapse in Tangshan City, but the earthquake damaged the continuity of the cover soil and made it more vulnerable to damage. In this paper, the principle of dividing the danger zone of karst ground collapse and the method of dividing dangerous zone by single factor diagram are presented. The software system KLC of karst ground subsidence zone is developed. Based on the groundwater flow field conditions in 1990, superposition analysis and zoning evaluation of karst ground subsidence in Tangshan City were carried out.