贵州岩溶山区地下水资源评价中的水文地质控制点特征研究

Research on the characteristics of hydrogeological control points in the evaluation of groundwater resources in karst mountainous areas of Guizhou

贵州省岩溶山区岩溶发育,水文地质条件复杂。综合历史大量水文地质调查普查资料、地下水资源评价过程中的水点和水文地质钻孔的数据,以区域地下水资源评价分区为研究单元,基于GIS软件和地质数理统计方法,对研究区以地下河为主的地下水系统、以岩溶大泉为主的地下水系统和以分散排泄为主的地下水系统三类型地下水资源评价分区与水文地质控制点的相关规律及特征进行研究,梳理研究区地下水资源内水点和水文地质钻孔的数据,分析了控制点对不同类型评价分区的差异性、局限性、分区性和适宜性。结果认为:控制性水点、水文地质钻孔对评价分区具有差异性、局限性、分区性和适宜性特征,在区域地下水资源量计算和水质评价时宜选择相应的、适宜的控制点,有益于区域地下水资源量计算和水质评价时对控制点及其数据的判选,提高地下水资源评价质量。

The karst mountainous area in Guizhou Province has developed karsts and complex hydrogeological conditions.Synthesizing a large number of historical hydrogeological survey census data,water points and hydrogeological borehole data in the process of groundwater resource evaluation.Synthesize a large number of historical hydrogeological survey census data,water points and hydrogeological borehole data in the process of groundwater resource evaluation.Taking the regional groundwater resource evaluation and zoning as the research unit,based on GIS software and geological mathematical statistics methods,the three types of groundwater systems in the study area,mainly underground rivers,karst springs,and scattered discharges,are analyzed.The correlation laws and characteristics of groundwater resource evaluation zoning and hydrogeological control points are studied.The results show that the controlled water points and hydrogeological boreholes have the characteristics of differences,limitations,zoning and suitability for the evaluation zones.Corresponding and appropriate control points should be selected in the calculation of regional groundwater resources and water quality evaluation,which is beneficial to the selection of control points and their data in the calculation of regional groundwater resources and water quality evaluation,and improves the quality of groundwater resources evaluation.