When the draining type valley formed a karst reservoir, it can be divided into seepage hypotypes:such as weak karst with microseepage, strong karst, hanging valley, buriedkarst…etc.
排泄型河谷岩溶水库划分为弱岩溶微渗漏、强岩溶渗漏、悬托型河谷渗漏、隐伏岩溶渗漏等亚型。
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Abstract : The buried depth of karst paleo-caves in Tahe oilfield, Tarim basin is deeper than others throughout the world. But little is known about the reason why it did not collapse.
The diversion tunnel section excavated by tunneller is buried deeply, the under ground water level is high, the activities of underground water is lively, and Karst topography is quite developed.