黔西南丘峰谷地区岩溶水资源量计算方法探讨

Discussion on the calculation method of karst water resources in hilly valley area

贵州省黔西南为典型的丘峰谷地区,该区域地表水系不发育,水文地质条件复杂,地下水资源量计算研究程度不高。为摸清区内地下水资源量状况,采用大气降水入渗法、地下水径流模数法、流量汇总法、水力坡度法和给水度计算法,基于岩溶水系统为计算单元,对丘峰谷地区岩溶水系统地下水资源量进行计算,对比分析计算结果,并判定各计算方法对岩溶大泉系统和储水构造系统的地下水资源量计算的适宜性,结果发现:在计算过程中,岩溶大泉系统应以流动系统为计算单元,宜采用大气降水入渗法和流量汇总法;而应用地下水径流模数法和水力坡度法计算储水构造岩溶含水系统资源量,具有相似性、保证率高。研究结果对类似水文地质条件下的岩溶山区地下水资源量计算具有重要意义。

In southwest Guizhou Province as a typical Hill peak and valley area,the area of surface water is not developed,complex hydrogeological conditions,groundwater resources quantity calculation of the degree is not high. To find out the groundwater resources status,the atmospheric rainfall infiltration method,calculation method of groundwater runoff modulus method,flow summary method,hydraulic gradient method and water supply,based on the karst water system for computing unit,on the hill peak valley area of karst groundwater water system is calculated and the calculation results analysis,and determine the suitability the amount of groundwater resources the calculation method of karst spring water storage structure system and the calculation of the system. The results showed that： in the process of calculation,karst spring system should be based on system flow calculation unit,should adopt the infiltration of precipitation and flow collection method and calculation of water storage structure; karst aquifer system resources using groundwater runoff modulus method and hydraulic gradient method,has the similarity and high guarantee rate. The research results are of great significance to the calculation of groundwater resources in karst mountain areas under similar hydrogeological conditions.