济南岩溶水微量元素分布特征及其水文地质意义  

The distribution characteristics and hydrogeological significance of trace elements in karst water,Jinan,China

作　　者：高宗军[1] 徐军祥 王世臣[1] 李常锁 韩克[1] 李佳佳[1] 罗斐 马河宽 

机构地区：[1]山东科技大学地质科学与工程学院,山东青岛266590 [2]山东省地质矿产勘查开发局,山东济南250013 [3]山东省地矿工程勘察院,山东济南250014

出　　处：《地学前缘》2014年第4期135-146,共12页Earth Science Frontiers

基　　金：山东省地质矿产局重大科技攻关项目(2012-045)

摘　　要：济南以泉名扬天下,故称泉城。20世纪后半期,由于地下水的开采,济南泉水流量逐年递减,并于1976年始出现断流,20世纪末限制岩溶水开采量后,泉水复涌。自1980年开始,保泉地质调查工作陆续开展,但迄今对泉水补给方向及影响泉水因素尚无定论。采用微量元素水文地球化学方法,对济南可能的泉域范围内的枯丰水期岩溶水化学特征及其变化进行了研究。结果表明,丰水期较枯水期离子浓度总体偏低,由南部山区向北至泉群地带,元素浓度由低到高,显著地反映出由补给区通过径流区至排泄区的整个水化学过程。利用PHREEQC软件MIX模块,选择趵突泉及其周围的不同采样点岩溶水进行配比混合模拟。结果显示,泉水补给方向多样,趵突泉不仅有近源补给来源,还有远距离深循环补给。作者结合调查区地质构造及相关水文地质条件,认为济南泉水的形成是多源混合补给、深浅循环结合而成,千佛山断裂北部透水段,对济南泉群的形成具有极其重要的作用。Resources;Shandong Geological Engineering Investigation Institute; Jinan,so-called Spring City,has been a famous city in the world due to its springs.The flow of the springs began to decrease in the second half of the 20th Century because of the exploitation of karst water,and outflows in some of the springs vanished for about several days or months every year since 1976.The intermittent phenomena of the flow disappeared at the end of the 20th Century,as the karst water exploitation was strictly restricted since that time.The geological surveys have been carried out one after another from1980,while no definite conclusions have been drawn for the recharge area and the influence factors of the springs.Therefore,trace hydrogeochemical method is employed here to study the static distribution and dynamic change of the karst water in the probable spring basin during both the drought period and the wet season in 2011.The ionic concentrations of the wet season are smaller than that of the drought period,and they increase gradually from the southern recharge area to the northern spring zone.This observation revealed the entire chemical process of the recharge area,runoff area and outflow area.Afterwards,the karst water samples from Baotu Spring and adjacent regions were mixed and simulated based on MIX module of software PHREEQC.The result indicates that Baotu Spring is a multi-source spring and its water comes from several directions with various distances.By taking the geological structure and the hydrogeological conditions of survey area into consideration,it is concluded that springs in Jinan originate from multivariate sources and consist of both deep and shallow cycle waters.The permeable segment in the northern Qianfoshan Fault is a key factor for the formation of the Jinan spring group.

关 键 词：济南泉域 岩溶水 微量元素 PHREEQC 趵突泉 多源补给 

分 类 号：P641.133[天文地球—地质矿产勘探]