摘要
为满足某电厂供水需求,需在某水库进行岸边取水工程(含取水竖井、引水隧道、引水明渠3部分)施工。通过短段掘砌逆作工艺,井筒壁溶洞导水并将导出的水作为水源的一部分,实现了井筒干封底,顺利完成井筒施工;采用顶管技术+管顶注浆技术在破碎岩体、涌水量较大地层成功完成引水隧道施工;通过岩塞爆破成功实现引水隧道和水库的连接;通过船载冲击成槽技术,实现了引水明渠的施工。
To meet the water supply demand of a power plant, the water intake engineering construction （ containing water intake shaft, draw water tunnel and open diversion channel） at a reservoir was needed.By means of the top-down method of excavation with lining alternated in short segments, guiding cavern water from shaft wall was derived as a part of the water source, and the shaft construction was completed with dry bottom-sealing.By pipe jacking and pipe top grouting technolo-gies, draw water tunnel was accomplished in the strata with broken rocks and abundant water inflow;by the rock plug blas-ting, the connection of the tunnel and the reservoir was successfully realized;and by percussive trenching technology, open diversion channel was constructed.
出处
《探矿工程（岩土钻掘工程）》
2014年第2期74-77,81,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
取水工程
短段掘砌
逆作法
导水
干法封底
隧道顶管
冲击成槽
water intake engineering
excavation with lining alternated in short segments
top-down method
guiding wa-ter
dry bottom-sealing
pipe jacking in tunnel
percussive trenching
