Reference List for Tunnel Construction - NORDSEETAUCHER GmbH

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NORDSEETAUCHER GmbH 北海潜水员公司 Hyperbaric Tunnel Construction and Diving ® ® 高压隧道作业与潜水 2011-2012 S-630/31 Mei Lai Road to Hoi Ting Road Tunnel-Hong Kong 香港 : 美荔道至旺角西通风楼隧道项目 S-597/98 Metro Hangzhou-China S-550 Railway Tunnel Shenzhen-China 中国深圳 : 铁路隧道项目 2012 CCCC Nanjing Weisan Tunnel-China 中国南京 : 中交纬三路过江隧道项目 S-644 Metro Warsaw-Poland S-636 Metro Hangzhou-China S-668 Road Tunnel Nanjing-China S-324 Metrotunnel, Ankara-Turkey 土耳其安卡拉 : 地铁隧道项目 S-666 Traffic Tunnel Shanghai S-623/24 Railway Tunnel Shenzhen-Hong Kong S-683 Railway Tunnel Nanjing-China S-731 Crossrail Tunnel London-UK DEEP SEA Tunnel Diving Helmet Nordseetaucher GmbH, Bramkampweg 9, D-22949 Ammersbek, Germany; Tel. +49 4102 23180, Fax +49 4102 231820, Mobile +49 172 4300598 E-mail: info@nordseetaucher.de; Internet: www.nordseetaucher.de
NORDSEETAUCHER GmbH 北海潜水员公司 Hyperbaric Tunnel Construction and Diving ® ® 高压隧道作业与潜水 Work under Hyperbaric Conditions Diving and Compressed Air Work in Tunnel-Boring-Machines 高压环境作业盾构机潜水与待压作业 Below a depth of 40 metres (which equals 4.0bar over pressure) compressed air technicians enter a zone where it is no longer effective to carry out compressed air work under conventional conditions. However, because the next generation of tunnels will be longer and deeper than anything we have at present, it can only be a matter of time and opportunity before divers and compressed air technicians start playing a key role in hyperbaric work. 在 40 米水深下 , 相当于 4bar 压力 , 以传统方式进行带压作业 , 效率不高。可是 , 随着新隧道将朝着更深、更长的趋势发展 , 那么 , 潜水员在高压环境下作业参与重要角色也只是时间和机会的问题了。 High groundwater head is a major challenge for tunneling in soft ground and weak rock. It has a strong impact on design and operation of Tunnel Boring Machines (TBMs) in order to prevent excessive groundwater inflow, to ensure face stability and to enable access to the cutterhead for maintenance, which can lead to an increase of the required construction period and budget. Designers should keep this in their mind when planning a tunnel alignment. 高水压是在软土层隧道施工的主要挑战。为考虑防止地下水渗透 , 保证掌子面稳定 , 以及方便人员进入刀盘进行维保工作等 , 这些因素都在很大程度上影响着盾构的设计与使用 , 同时也会增加项目工期和施工成本。在选取隧道路线时 , 设计单位应将此纳入考虑范围。 The 4 th River Elbe Tunnel was a milestone in Slurry-TBM tunneling due to the large TBM diameter of 14.2 m, low cover of as small as 7 m and high groundwater pressure of up to 4.5bar. The southern section of the 2.561 km long tunnel was excavated in glacial deposits consisting of sand, marl and boulders, while more cohesive ground such as marl and clay with sand lenses and boulders was present on the northern tunnel section. 德国易北河第四隧道盾构机直径达 14.2 米 , 隧道最薄浅埋断仅为 7 米 , 地下水压高达 4.5 巴 , 因此易北河第四隧道成为泥水盾构机施工的里程碑。盾构机在隧道南部 2561 米的挖掘地质是由沙、泥灰和大圆石组成的冰积土 , 而隧道北部段土质为更为连续的黏性土 , 有泥沙 , 含沙砾和大圆石的黏土等。 Frequent interventions for cutterhead maintenance were necessary due to presence of abrasive soils. Severe wear was observed on excavation tools and on the backside of the cutterhead which had to plough through accumulated spoil at the bottom of the excavation chamber. Thus intensive and time consuming repair works (6 weeks) were required under compressed air. 土质的高磨损性导致了刀盘维保进仓作业的频繁进行。我们发现不仅刀具磨损严重 , 而且刀盘背面也由于持续与开挖仓底部沉积的泥渣不断摩擦而磨损严重。因此压缩空气待压修复作业耗时大量 , 总耗时 6 周。 At the deepest point of the river crossing, the crew had to enter the excavation chamber and work under compressed air up to 4.5bar. 在易北河隧道最深处 , 作业人员在开挖仓中的工作压力最高达到 4.5 巴。 Nordseetaucher GmbH, Bramkampweg 9, D-22949 Ammersbek, Germany; Tel. +49 4102 23180, Fax +49 4102 231820, Mobile +49 172 4300598 E-mail: info@nordseetaucher.de; Internet: www.nordseetaucher.de
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Reference List for Tunnel Construction - NORDSEETAUCHER GmbH

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