玉符河对济南岩溶水化学过程的影响研究  

EFFECT OF YUFU RIVER ON CHEMICAL PROCESS OF KARST GROUNDWATER IN JI'NAN,SHANDONG PROVINCE

作　　者：李宝学 秦大军[1] 郭艺[1] 刘文才[1] Mohammed Haji 林琳[2] 管清花[2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]山东省水利科学研究院,济南250013

出　　处：《工程地质学报》2017年第1期190-198,共9页Journal of Engineering Geology

基　　金：国家自然科学基金项目(41172215);山东省水利厅;财政厅水生态文明试点科技支撑计划资助

摘　　要：玉符河是济南岩溶地下水重要补给源,对济南保泉和供水具有重要意义。本文以2015年玉符河入渗补给试验为例,利用水化学和同位素方法分析了河水入渗对岩溶水矿物组分溶解及离子成分的影响、河水入渗后的渗流路径、影响范围等问题。结果表明,玉符河至城区泉群,水化学类型由SO_4-Ca-Mg型逐渐过渡到HCO_3-Ca型;河水的入渗导致岩溶地下水中方解石和白云石饱和指数减小,石膏的饱和指数几乎不变;水化学和同位素数据表明催马—蛮子庄一带岩溶水中河水比例为48%。在空间分布上,河岸东侧3km范围内河水入渗补给量占比可达50%。在河道东侧8km处,河水入渗补给量占比为5%。在靠近城区泉群一带,河水入渗补给量占比更低,<5%。本次观测结果表明,河道补水尚未对城区泉群有明显影响。本研究为济南岩溶水资源评价和保泉方案的制定提供依据。As one of the main recharge sources of the Jinan karst groundwater,the Yufu River plays an important role in spring protection in Jinan. In this paper,hydrochemistry and isotope are used to analyze variation of ions and mineral dissolutin / precipitation,flow path and scope due to river infiltration. The results indicate the SO4-Ca-Mg type of river water gradually turns into HCO3-Ca type of groundwater toward central city springs. Saturation indices of calcite and dolomite decrease,while saturation index of gypsum remains constant due to river infiltration. The data of hydrochemistry and isotope show that fraction of river water in karst aquifer reaches to 48%in the area from the Cuima to Manzizhuang. The river water occupies respectively 50% and 5% at 3 and 8 kilometers east to the Yufu River,showing less effect on the spring areas.

关 键 词：河水 岩溶水 水化学 同位素 水流路径 济南 

分 类 号：P641.12[天文地球—地质矿产勘探]