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The Analysis of the Stability of the Subsea Tunnels
Pages: 4-7
Year: Issue:  2
Journal: Geotechnical Investigation & Surveying

Keyword:  有限元极限分析法 海底隧道 稳定性 安全系数;
Abstract: 本文采用有限元极限分析法分析了海底隧道的整体稳定性与存在局部破碎带下的整体稳定性。以某海底隧道为例,计算表明隧道整体是安全的。当存在局部破碎带时,必须做好破碎带的超前注浆堵水加固,以减少其渗水量,并对破碎带进行局部加固;计算还表明,有局部破碎带时,隧道安全度降低,破碎带越宽,堵水圈厚度越小,安全系数越小;隧道倾斜破碎带较垂直破碎带安全系数小。
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