南京大学学报（自然科学版）2016，Vol.52Issue(3)：503-511,9.DOI:10.13232/j.cnki.jnju.2016.03.012
人工示踪技术在岩溶地区水文地质勘察中的应用
Application of tracer test techniques in hydrogeological survey in karst area
摘要
Abstract
Tracer tests in karst area are used to indicate the flow direction and look for recharge.It widely helps to protect water engineering,stop flood at tunnels and wells.Comparing with the progress in the world,China has much less application of tracer test in karst hydrogeology.In recent years new progress in tracer test leads to two points of development in karst hydrogeological methodology.One achievement is the multi-tracer technique that combines natural tracers with artificial tracer used to j udge flow regime in karst drainage system.Another new achievement is the first experience of tracer test in karst aquifer of peak forest area.The tests results show that the apparent velocity of groundwater with 10~102 m·d-1 in peak forest karst area,which is much lower than that in mountainous subterranean river in a range of 102~104 m·d-1 .It is probably because of low hydraulic gradient and winding flow line in plain area.Especially the tracer is limited within a narrow belt called as concentrated flow zone there,which probably is related to fractures in stratum.In this case solute transport is still considered as one dimension character. Because tracer will be diluted by rich groundwater in the aquifer,the distance between inj ection points and monitoring points should be no longer than 1 km for good test effect.Finally due to the increasing challenge of karst water protection from intensive pollution,tracer tests should be used widely and extensively.关键词
岩溶水/地下河/溶质运移/水库渗漏/隧道涌水Key words
karst water/subterranean river/solute transport/reservoir leakage/tunnel gushing分类
信息技术与安全科学引用本文复制引用
姜光辉,郭芳,汤庆佳,李鑫,曾莘茹..人工示踪技术在岩溶地区水文地质勘察中的应用[J].南京大学学报（自然科学版）,2016,52(3):503-511,9.基金项目
国家自然科学基金(41172231,41472239),广西自然科学基金(2013GXNSFDA019024),中国地质调查项目(1212011121166),国家文物局(2011-735) （41172231,41472239）
