SUCCESSFUL APPLICATION OF EPB TUNNELING FOR THE DENNY CSO PROJECT, SEATTLE, WASHINGTON

机译：EPB隧道技术在华盛顿州西雅图的丹尼CSO项目中的成功应用

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A 1.89 km-long, 4.5 m-l.D. tunnel was successfully constructed through saturated hard clay, and highly abrasive dense sand and gravel, with groundwater heads ranging from 10 to 20 m. In order to address these conditions, a Lovat earth pressure balance IBM was used, with soil conditioning by foam, water and various polymers. Support was provided by a single-pass segmented concrete lining. Groundwater inflows of 400 to 1,600 lpm at times created challenges for changing cutting tools. Surface settlements were generally less than measurement thresholds, except under very low cover at startup. This project provides a pivotal case study of the successful application of EPBM technology in saturated, abrasive glacial soils and the successful application of soil conditioners.

机译：长度1.89公里，长4.5 m该隧道成功地通过饱和的硬质粘土，高磨蚀性的致密砂砾和砾石建造，地下水位在10至20 m之间。为了解决这些问题，使用了Lovat土压力平衡仪IBM，并通过泡沫，水和各种聚合物对土壤进行了调节。单程分段混凝土衬砌提供了支持。有时地下水流入量为400至1600 lpm，这给更换刀具带来了挑战。表面沉降通常小于测量阈值，除非在启动时覆盖率很低。该项目为成功应用EPBM技术在饱和磨蚀性冰川土壤中的成功应用以及土壤改良剂的成功应用提供了关键的案例研究。

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《Rapid Excavation and Tunneling Conference》|2003年|p.1104-1116|共13页
会议地点 New Orleans(US);New Orleans(US)
作者
Judy Cochran; Tim Pearia; Robert Robinson; Clay Haynes;
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King County Wastewater Treatment Division;

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SUCCESSFUL APPLICATION OF EPB TUNNELING FOR THE DENNY CSO PROJECT, SEATTLE, WASHINGTON

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