ISSN 2096-4498 CN 44-1745/U
隧道建设(中英文) ›› 2007, Vol. 27 ›› Issue (增刊): 60-63.DOI: A
• 研究与探索 • 上一篇 下一篇
王在泉, 王建新, 郑颖人, 张黎明
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作者简介:
WANG Zai-Quan, Wang-Jian-Xin, Zheng-Ying-Ren, Zhang-Li-Meng
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摘要:
以局部破碎带的某海底岩体隧道为例,采用有限元极限分析法分析了海底隧道岩体注浆加固前后的稳定性。计算表明,对于整体较为安全的隧道,当存在局部破碎带时,安全度降低,破碎带越宽,注浆堵水圈厚度越小,安全系数越小。与完整围岩破裂面位于两侧相比,含倾角45°破碎带围岩的堵水部分最先失稳。因此,必须做好破碎带的超前注浆堵水,以减少其渗水量,并对破碎带进行局部加固,此种情况下,隧道衬砌原则上可按无水压设计,衬砌厚度与采用全水头设计相比可以大大降低。
Abstract:
Considering the sea water seepage, limit analysis by finite element method is used in a subsea tunnel to analyze the stability before and after grouting reinforcement. Results show that the faultrupture zone decreases the stability of tunnel. The wider the faultrupture zone is, the more unsafe the tunnel is. The more thickness the grouting loop is, the safer the tunnel is. And the faultrupture zone with slip surface of 45° tends to lose stability most. The width of subsea tunnel lining must increase, if the full seepage pressure is considered in the design of tunnel.
Key words:  , limit analysis by finite element method subsea tunnel stability
中图分类号:
 
U459.5
王在泉, 王建新, 郑颖人, 张黎明. 局部破碎带下海底岩体隧道稳定性分析[J]. 隧道建设, 2007, 27(增刊): 60-63.
WANG Zai-Quan, Wang-Jian-Xin, Zheng-Ying-Ren, Zhang-Li-Meng. Analysis on Stability of Subsea Tunnel in Faultrupture Zone[J]. Tunnel Construction, 2007, 27(增刊): 60-63.
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