应用氯量平衡法估算娘子关泉域典型岩溶区的降水入渗系数  

Estimation of the infiltration coefficient based on chloride mass balance in a typical karst region of the Niangziguan spring area

作　　者：申豪勇 梁永平[1] 唐春雷[1] 赵春红[1] 王志恒 SHEN Haoyong;LIANG Yongping;TANG Chunlei;ZHAO Chunhong;WANG Zhiheng(Institute of Karst Geology,CAGS/Karst Dynamics Laboratory,MNR＆GZAR,Guilin,Guangxi 541004,China)

机构地区：[1]中国地质科学院岩溶地质研究所/自然资源部广西壮族自治区岩溶动力学重点实验室,广西桂林541004

出　　处：《水文地质工程地质》2018年第6期31-35,共5页Hydrogeology & Engineering Geology

基　　金：国家重点研发计划(2017YFC0406104);国家自然科学基金项目(41672253);中国地质调查局调查项目(DD20189807;DD20160242)

摘　　要：娘子关泉作为北方著名的岩溶大泉,研究程度较高,降水入渗补给作为泉域内岩溶地下水的主要补给来源,开展降水入渗系数的研究对于评价岩溶地下水资源量、分析娘子关泉水流量的变化具有重要意义。氯量平衡法利用氯离子质量守恒的原理直接估算降水入渗系数,该方法简便、有效,在国内外很多地区都进行了应用。通过在娘子关泉域内碳酸盐岩裸露区和覆盖区分别选择典型区,运用该方法分别估算了裸露区中等岩溶发育区和覆盖区的降水入渗系数,得到的结果分别为0. 21和0. 11,取得的结果与该地区已有的成果基本吻合,为该地区降水入渗系数的准确估算提供了新的方法,同时也为氯量平衡法在同类型地区的应用提供了借鉴。As one of the famous karst springs in nm＇them China, the Niangzignan Spring was much examined. Infiltration of precipitation is the slain rechalge somme of the karet groundwater. tlesealvh on tire infiltration coefficient of precipitation is of important significance for the karst groundwater resouree evaluation and spring flow analyses. The major achievements of the infiltration coefficient of precipitation am based on the water balance method in the karst groundwater system. The precipitation recharge is given through the water-budget equation, and the results will derease with the inreasing karst groundwater system. This method can cause roTors because of the uncertainty of the karst groundwater system. Chloride mass balance （CMB） is a simple and valid estimation method of recharge from precipitation, and it has widely been used at home and abroad. In the Niangziguan karst spring area, two typical kalst regions were separately selected in the outcropping areas of the carbonates and the covred carbonate alias. The CMB were adopted to estimate the vertical infiltration coefficient at these two regions, and the results are 0. 21 at outcropping carbonate area and 0. 11 at covered carbonate area. The results are in a good agreement with the data from the predecessors. This paper contributes to promote the applications and developments of the CMB method in karst areas in northern China.

关 键 词：地下水补给 氯量平衡法 降水入渗系数 娘子关泉域 

分 类 号：P641.134[天文地球—地质矿产勘探]