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DESIGN AND CONSTRUCTION OF THE SOUTH COBB TUNNEL

机译:南科布隧道的设计与施工

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In 2008, the Cobb County Water System began construction of the South CobbrnTunnel, its second wastewater tunnel. The South Cobb Tunnel is an 8.9-km (5.5-mile)rnlong, 8.2-m (27-ft) diameter, hard rock tunnel. At its maximum depth of 122 m (400 ft), itrnis the deepest tunnel constructed in the Atlanta area. This paper describes ground andrngroundwater conditions encountered along the tunnel alignment, excavation using thernrefurbished Herrenknecht S-288 tunnel boring machine (TBM), excavation and concreternlining of the 34.7-m (114-ft) diameter pump station shaft and two 13.4-m (44-ft)rndiameter construction shafts, and construction of six tangential vortex intake structuresrnthat transfer flow from interceptor sewers to the tunnel.
机译:2008年,科布县供水系统开始建设其第二条废水隧道南科布恩隧道。 South Cobb隧道长8.9公里(5.5英里),直径8.2米(27英尺),是硬岩隧道。它最大的深度为122 m(400 ft),是亚特兰大地区建造的最深的隧道。本文介绍了沿隧道路线遇到的地下水和地下水情况,使用翻新的海瑞克S-288隧道掘进机(TBM)开挖,直径34.7米(114英尺)的泵站竖井和两个13.4米(44)的开挖和混凝土衬砌-英尺直径的施工井道,以及六个切向涡流进气结构的建造,这些结构将流量从拦截器下水道传输到隧道。

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