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Numerical simulation analysis of little tremie grouting effect while construction of going into portal at small-distance tunnel
Author(s): 
Pages: 239-242
Year: Issue:  z2
Journal: ROCK AND SOIL MECHANICS

Keyword:  小净距隧道小导管注浆加固范围有限差分法;
Abstract: 利用有限差分法,对软弱围岩小净距隧道进洞施工中两种小导管注浆加固范围的加固效果进行了对比分析,揭示了施工过程中两种加固范围对隧道周边变形和应力的影响.研究结果表明:增加对雁形部上部范围加固的方案较仅加固中间岩柱的方案有利于施工的安全.
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