灾害环境下隧道不同部位漏水对于周围土体及平行隧道的影响研究

doi:10.13722/j.cnki.jrme.2014.0251

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Abstract Considering the disaster caused by leakage during tunnel construction and operation，finite difference method which takes the stress and pore pressure coupled effect into account is employed to study the influence on surrounding soils and parallel tunnel from different leakage positions. The disaster model of one place of stream-like leakage occurring on unit area of tunnel is established. The analysis shows that different leakage positions have different influence on surrounding soils. With the development of leakage，the lower leakage position causes wider vertical displacement field and deeper horizontal displacement field. The existence of parallel tunnel leads to the dissymmetric deformation and larger curvature distortion of the ground surface. Besides，different leakage positions can cause very different displacement modes of the parallel tunnel. Displacement of parallel tunnel could be larger than the leaky tunnel itself. Finally，influence zones of leakage positions are divided according to the impact of leakage on the leaky tunnel and the parallel tunnel. The research indicates that efficient and pertinent countermeasures according to the different leakage positions are necessary.

Key words： tunnelling engineering leakage positions disaster influence zones parallel tunnel

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.0251 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/Is1/3196

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