摘要
示踪结果显示，大理岩是以溶蚀裂隙为主的含水介质，其岩溶水流迭较溶洞管道型含水层低一个数量级。在高山峡谷区，包气带深厚，示踪水流的“分流”现象十分普遍；隔水边界易于遭受破坏，不同单元之间越流水力联系较为广泛；且深部裂隙系统开启程度好，岩溶发育深度超过２０００～３０００ｍ，由于补给区与排泄区高差大，为深部区域水流系统的发育提供了介质和水动力条件。
A ’94 tracing test in the research distfict located at the eastern margin of Qinghai-Ti-betan Plateau showed that marble is a kind of aquious media with numerous dissolution fis-sures,in which the waterflow velocity is one order of magnitude less than that in karstaquifer of carvern conduit type.In the alpine-gorge area exists a very thick aeration zone,where the bifurcation of tracing water occurs ubiquitously.The impervious boundary is dis-turbed easily, which results in a profound leakage between different hydrogeologic units.The deep fissure system exists with a great opening extent and the karstification occurs over2000～3000 m in depth.A great difference between.the recharge and discharge areas in alti-tude affords a media and hydrodynamic premise for the development of regional deep water-flow system.
出处
《中国岩溶》
CAS
CSCD
北大核心
1995年第4期362-371,共10页
Carsologica Sinica
关键词
岩溶水
示踪试验
大理岩
水流
分流效应
tracing test of karst water
marble
effect of tracing waterflow bifurcation
leakage
alpine-gorge area
Jinping district of west Sichuan.
