黄土地下隧道开挖对周围土体变形的影响分析*

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Abstract The numerical analysis on influence of tunnel excavation on the deformation of surrounding soil in loessial strata is performed based on loessial mechanics parameters of Xian Metro Line No. 1 by using the numerical analysis software，FLAC3D. The computation model of the tunnel is established based on the actual loessial field conditions. The regularities of the deformation of inner ground surface，vault and sidewall of the tunnel and the settlement of ground buildings in the earlier and later stages of tunnel excavation are studied.

Key words： tunneling engineering loess tunnel ideal elastoplasticity excavation simulation FLAC3D

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https://rockmech.whrsm.ac.cn/EN/Y2004/V23/IS1/4333