贵州省碧云湖岩溶渗漏水文地质条件与渗漏管道位置识别  

Hydrogeological conditions of karst leakage and locating of leakage channels in Biyun lake,Guizhou

作　　者：曾洁[1,2] 潘晓东 任坤[1,2] 刘伟 彭聪[1,2] 郑智杰 ZENG Jie;PAN Xiaodong;REN Kun;LIU Wei;PENG Cong;ZHENG Zhijie(Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MNR&GZAR/International Research Center on Karst under the Auspices of UNESCO,Guilin,Guangxi 541004,China;Pingguo Guangxi,Karst Ecosystem,National Observation and Research Station,Pingguo,Guangxi 531406,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、广西岩溶动力学重点实验室/联合国教科文组织国际岩溶研究中心,广西桂林541004 [2]广西平果喀斯特生态系统国家野外科学观测研究站,广西平果531406

出　　处：《中国岩溶》2024年第1期201-208,共8页Carsologica Sinica

基　　金：广西科技项目(桂科AB21196026,2021JJA150041);中国地质调查局地质调查项目(DD20230081);中国地质调查局基本科研业务费(2021019)。

摘　　要：查找岩溶区湖泊水库渗漏通道是岩溶区湖库建设和渗漏灾害治理的“卡脖子”问题。文章以碧云湖为例,分析湖区周边水文地质条件,结合示踪试验和地球物理探测方法,确定了碧云湖渗漏水文地质条件和渗漏主管道位置,并通过钻探验证。结果表明,碧云湖渗漏主要为岩溶管道型,渗漏点和地下河管道主要发育在靠近八步复式向斜轴的部位,位于物探测线测点540 m处,管道深约40 m,渗漏段相对较窄,灌浆堵漏可行。根据水文地质调查、地形地貌条件和地球物理探测结果,建议在水库下游方向的物探测线开展帷幕灌浆,以测点540 m为中心向两边灌浆。China is a country with the widest distribution area and the most complete karst development type in the world,and its karst area accounts for about one third of China's territorial area.Finding leakage channels of lakes and reservoirs in karst areas has been an urgent problem for the lake and reservoir construction and the control of leakage disasters.In this study,Biyun lake in Zhijin county of Guizhou Province was taken as an example to analyze the hydrogeological conditions around the lake in response to the problem of watershed shrinkage.Furthermore,with the combination of tracer tests and geophysical detection methods,the hydrogeological conditions of leakage in Biyun lake and the location of the main leakage channel were determined and verified by drilling test results.The results of the tracer test show that Moion concentration increased significantly 32 hours after the tracer was put into Biyun lake,and the value peaked 68 hours after the setting of tracer,and then decreased.The tracer results confirm that Biyun lake flows along the karst leakage zone in the north-east direction after seeping through the sinkhole,and is finally discharged at the outlet of the Babu underground river.In the results of high-power charging method,the potential curve and gradient curve show a relatively maximum potential value and a relatively minimum value of potential gradient at the measuring point of 540 m,where the main leakage channel of Biyun lake was inferred to be located and a large-scale karst cave is likely developed in the vicinity.The rest of the anomalous sections of the curves is inferred to be a strong karst development zone,which can provide conditions for the storage and transport of groundwater.A relatively strong reflective surface of electromagnetic wave shown by geological radar exploration at the depth of about 20-28 m is inferred to be a contact surface between mudstone and greystone.A strong reflection surface of relative electromagnetic wave at the depth of 36-48 m is inferred to be a strong karst d

关 键 词：碧云湖 岩溶渗漏 水文地质 渗漏管道 地球物理探测技术 

分 类 号：TV697.3[水利工程—水利水电工程]