Establishing geotechnical baseline values for deep soft ground punnels

被引:0
|
作者
Newby, John E. [1 ]
Gilbert, Michael B. [1 ]
Maday, Leon E. [2 ]
机构
[1] CDMs Brightwater Serv, Bellevue, WA 98007 USA
[2] King Cty Dept Nat Resources & Pk, Waste Treatment Div, Bothell, WA USA
关键词
D O I
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中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The Brightwater Conveyance System consists of four tunnel segments in three tunnel contracts, comprising over 21,760 in (71,400 ft) of pressurized face tunneling in complex glacial and non-glacial soft ground conditions with a large proportion 60 in (197 ft) or more below the ground surface with up to 7 bars groundwater head. This resulted in unique technical challenges for establishing geotechnical baseline values. The process used to develop these baseline values and specifications with regard to the level of risk that the owner, King County, was willing to accept is described in this paper.
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页码:547 / +
页数:2
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