中国岩溶2012，Vol.31Issue(2)：179-184,6.
清华洞暗河堵洞成库与防渗技术
Reservoir building by cave-plugging and the seepage-proofing technique in the Qinghuadong uderground river
摘要
Abstract
In order to solve the problem of water supply for the Funing County and irrigation of the surrounding rural farmlands, a reservoir is built by plugging the Qinghuadong underground river. The designed capacity of the reservoir is 99. 34 million cubic meters, blocking body is 87. 5 m in height, and the largest impoundment depth is about 116 m. Geological survey proves that there are relatively complete relative-impermeable strata and impermeable strata around the reservoir basin, and the elevation of all spring outcrops is higher than the designed water-storage level. But the geologic structure at the central part of the reservoir is quite complicated and karst is quite developed, and there is cave and fault collapse-body on the left bank near the entrance of the underground river, which easily leads to leakage around the dam. According to the engineering geological conditions at the central part, the 0+085 damsite is arranged in the D3g impermeable layer, where the impact of caves can be kept away and is good for construction for the site being close to the river's entrance. Furthermore, seepage-proof engineering is conducted to the leakage passages formed by the collapse bodies and the karst fissures with the upper and lower half-closed hanging style curtain grouting. Years of practice shows that the seepage-proof engineering is feasible, the seepage-proof lines and grouting design of the dam site is reasonable, and the cost of the reservoir is low. The seepage-roof engineering effectively solved the county water supply and irrigation water for 22 600 mu of farmland 215 000 mu of tropical crop downstream.关键词
岩溶/水库渗漏/堵洞成库/防渗处理/帷幕灌浆Key words
karst/reservoir leakage/reservoir building by cave-plugging/seepage-proof engineering/curtain grouting分类
天文与地球科学引用本文复制引用
卢晓鹏,谭光明..清华洞暗河堵洞成库与防渗技术[J].中国岩溶,2012,31(2):179-184,6.基金项目
水利部公益性行业专项经费项目(201001058) （201001058）
