围堰

Coffer dams and back berms are often built in the two sides of a roadbed for convenient construction, resulting in obstructing wave but letting tide come into the top of the silt roadbed .

海滩区淤泥长期受周期性的波浪荷载和潮汐荷载作用，在淤泥路基排水固结处理前，为便于施工，一般在两侧填筑围堰，并修建反压护道，波浪作用被阻隔，而潮汐通过排水层进入淤泥路基顶面，对淤泥路基的排水固结过程产生重要影响。

It specifically analyses the construction problems of bridge deep foundation ditch excavation in the section of earthquake liquefied soft soil area,puts forward the programs of vacuum light well precipitation, steel tube pile fender and the composition of them to solve the damages of sand-blast boil and landslide that easily happened in the construction.

详细分析了地震液化带软土地区桥梁深基坑开挖的施工问题，提出了真空轻型井点降水、钢管桩围堰和两者相结合的方案来解决施工过程中可能出现的喷砂冒水和滑坡等灾害，试验结果表明，用该方法进行深基坑开挖支护是十分有效的。

The presentation introduces conditions, features and difficulties in the recovery project of Shanghai Metro Line 4, by stating cons and pros of overall proposal of recovery design, the safeness of support and bracing structure for hyper deep foundation, influence of mid-river cofferdam on existing sound tunnel and hyper deep foundation, structural design selection for connection section of the mined tunnel, water-proofing option for hyper deep foundation in confined aquifer soil.

报告介绍了上海地铁4号线修复工程建设条件、特点和难点，陈述了对修复设计总体方案取舍、超深基坑支护结构安全度、江中围堰对完好隧道及超深基坑的影响、暗挖连接段的结构设计方案选择、处于承压含水层中的超深基坑的结构防水等内容。

Outline of the Presentation The presentation introduces conditions, features and difficulties in the recovery project of Shanghai Metro Line 4, by stating cons and pros of overall proposal of recovery design, the safeness of support and bracing structure for hyper deep foundation, influence of mid-river cofferdam on existing sound tunnel and hyper deep foundation, structural design selection for connection section of the mined tunnel, water-proofing option for hyper deep foundation in confined aquifer soil.

报告内容介绍报告介绍了上海地铁4号线修复工程建设条件、特点和难点，陈述了对修复设计总体方案取舍、超深基坑支护结构安全度、江中围堰对完好隧道及超深基坑的影响、暗挖连接段的结构设计方案选择、处于承压含水层中的超深基坑的结构防水等内容。

During the construction ,in order to protect the large interim services such as trestle bridge,steel protective casing and double-walled steel cofferdam,static ice pressure and dynamic percussive force were eliminated from water by use of various methods.

在建桥过程中，栈桥和钻机平台桩基、钢护筒、双壁钢围堰等大临设施采用活水圈、人工破冰、破冰船破冰及吊挂软物体等方法消除了静冰压力，利用爆破法破冰，消除了动冰的撞击力。

Cofferdams are made by driving metal sheet piling into the bed to form a watertight fence.

在近代工程中，筑围堰时一般先打下钢板桩以形成阻水层。

Temporary Works shall mean all temporary works of every kind required in or about the performance of the Project Insured including but not limited to all shuttering, formwork, scaffolding, cofferdams, sheet steel piling, temporary bridge, tunnel supports and the like.

临时工程指所有与完成被保险工程有关的各种临时性工程，包括所有的模板、盖板、脚手架、围堰、钢板桩、栈桥、隧道支撑等类似工程。

Then, once it is in place, it is partly flooded and allowed to sink to the riverbed around the breach, making a tight seal.

一旦到位，就向拱坝内灌水使它沉到裂口周围的河床上，形成了一道严密的围堰。

Early in the 13th century, build DAMS block water with pneumatic series of water in the dry cofferdams.

早在13世纪就筑堤坝拦海水，再用风动水车抽干围堰内的水。

Diversion of the channels and cofferdams shall be used to minimize potential disturbance to water bodies, to limit adverse impact on water quality at downstream and to contain sediments.

应把水道或围堰改道，以减少对水体可能造成的扰动，以尽量避免对下游的水质造成不良影响及挖到沉积物。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。