西南岩溶石山区断陷盆地岩溶水系统分类及供水意义

笔者根据岩溶区水文地质条件及特征的差异，以地下水循环的特征为纲，应用系统分析方法，将岩溶水系统分为三级，对各级系统进行了分类。第一级为岩溶水系统，第二级分为浅循环和深循环岩溶水系统、第三级分别进一步分为裸露型、裸露-覆盖型、裸露-埋藏型、滞水型及层控型和断裂带型6类基本的岩溶水文地质单元。并论述了各类型的水文地质特征，指出了各类系统的供水意义，对断陷盆地岩溶水资源的勘查和开发有较大的参考价值。

Classification of karst water systems in karst down-faulted basins of the southwestern China karst region

According to different hydrogeological and characteristics of karst areas as well as the characteristics of groundwater circulation and by applying the sy stematic analytic method,the karst water systems may be classified into three gr ades:the first grade is the karst water system;the second grade includes the sha llow-circulating and deep-circulating karst water systems;the third grade may be further divided into six basic karst hydrogeological units or types,exposed,exp osed-covered,exposed-buried,perched water,deep-buried stratabound and fault zone types.The paper also discusses the hydrogeological characteristics of the vario us types and points out the sig-nificance of various systems in water supply.This study is of reference valu e for the exploration and development of karst water resources in down-faulted b asins.