2) downstream cofferdam
下游围堰
1.
The impervious wall in the downstream cofferdam of Dongping hydroproject is constructed by means of high-pressure Screw-Jetting, the slurry drilling methods is given up because the fine deposits in overburden layers are scoured away by water flow, and the PVC pipe is used to strengthen the drill hole and good effect is obtained.
洞坪水电枢纽工程下游围堰基础覆盖层受水流冲刷,细颗粒被带走,因此孔隙大、架空现象严重,高喷造孔泥浆固壁困难;施工时采用跟管钻进,造孔完成后下PVC管固壁获得成功。
3) underwater cofferdam
水下围堰
1.
The paper elaborates the construction of underwater cofferdam which is based on gravels.
对在砂砾石基础上填筑水下围堰进行了阐述,水下围堰的砂砾石基础采用砂砾石帷幕灌浆进行防渗,从理论、实践等多个方面分析了其可行性。
4) downstream RCC cofferdam
下游RCC围堰
1.
The concrete construction of downstream RCC cofferdam of Goupitan Hydropower Station has the feactures of short construction period, high intensity, and high quality requirement.
构皮滩水电站下游RCC围堰混凝土施工具有工期紧、强度大、施工质量要求高等特点。
5) underwater desilting without weir
无围堰水下清淤
1.
The methods of toe weight and underwater desilting without weir are effective measures for reinforcement.
土坝上游坝趾区加固在中小型水库除险加固设计中普遍存在,采用压重法和无围堰水下清淤是又好又快的加固措施。
6) upstream cofferdam
上游围堰
1.
Application of controlled blasting in removal of upstream cofferdam;
控制爆破在上游围堰拆除中的应用
2.
Application of controlled blasting technology in removal of cut-off wall at TGP s upstream cofferdam;
控制爆破在三峡上游围堰防渗墙拆除中的应用
3.
The phase-Ⅱ upstream cofferdam at the Three Gorges project has a maximum height of 82.
三峡工程二期上游围堰最大高度 82 。
补充资料：下游
1.河流接近出口的部分;亦指下游附近的地区。 2.犹末流。 3.比喻落后的地位。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条