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1)  dead-air grouting of cofferdam
围堰闭气灌浆
2)  water tight of cofferdam
围堰闭气
1.
Layout,design standards and parameter determination of the cofferdam are introduced based on characteristics of the project,and problems regarding water tight of cofferdam with earth material and main cofferdam seepage prevention are addressed.
龙滩水电站尾水出口工程枯水期施工围堰采用在预留岩坎上加高形成挡水围堰方式,根据工程特点,介绍围堰布置形式,设计标准,参数选择等,结合施工过程中的实际情况,提出土石子围堰闭气和浆砌石主围堰堰体防渗中应注意的几个问题。
3)  enclosure grouting
围封灌浆
1.
In this article, authors analyze advantages and disadvantages of common grouting strengthening foundation of existed buildings methods, and provide the enclosure grouting strengthening method.
分析了常规灌浆加固既有建筑物地基方法的优缺点,提出了围封灌浆加固方法,就此方法进行了现场试验和实际工程应用检验。
4)  coffered borehole grouting
围堰式压密注浆
5)  boundary of grout zone
灌浆区范围
6)  cofferdam [英]['kɔfədæm]  [美]['kɔfɚ,dæm]
围堰
1.
Experimental study on the concrete properties in cut-off wall of the earth-rock cofferdam;
土石围堰防渗墙混凝土性能试验研究
2.
Structure design of Donghu tunnel steel sheet pile cofferdam;
东湖隧道钢板桩围堰结构设计
3.
Application of geomembrane to cofferdam of Langshitan Hydropower Station;
土工膜在浪石滩电站围堰工程中的应用
补充资料:闭气


闭气
water tight

biqi闭气(water tight)在堵口工程合龙后,采取阻水断流措施,阻止缝隙漏水。 用立堵法合龙,当合龙绿尚未蛰实,坝身仍然漏水,坝后翻花不止,大小远近不一,应辨明是底漏还是腰漏,如是底漏,说明绿体尚未到底,比较严重。闭气方法,一般有:①在正坝堵合后,除合龙蹄上加压土外,于口门坝前加修绿工,称为关门端。然后抛袋土及加修土俄,使之闭气;②双坝合龙时,用边坝合龙闭气,在正坝与边坝之间,用袋土及粘土填筑土柜,边坝之后再加后战,阻止透水;③修筑养水盆,即在坝后修筑围堤一道,把门口冲深的潭坑围起来,用以积蓄坝后渗水,抬高坝后水位与大河相平,即可闭气。对平堵的口门,因抛石渗漏严重,须采用①、②两种闭气办法,截堵渗流。(徐福龄)
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