软土地层盾构隧道渗漏水量与沉降关系的模拟分析

Analogue analysis for relationship between leaking water amount and settlement of tunnels in soft soil stratum

上海地区的隧道多处于饱和含水的软土地层,施工方法以盾构法为主。隧道的渗漏水往往是引发隧道沉降的主要原因,本文主要从盾构隧道的特点分析了渗漏水的原因,并通过有限元模拟计算,对比分析了渗漏水量对沉降的影响,同时研究了隧道长期沉降的变化规律,为上海地区盾构隧道的施工和防水提供了一定的参考。

Tunnels in Shanghai area sit mostly on soft soil stratum saturated and shield tunneling is the construction method commonly used. It is likely that the settlement of the tunnels is caused by leakage. The article analyses the causes for leaking in terms of characteristics of the shield machined tunnels and comparatively analyses the effect of leaking water amount on settlement through calculation of finite element. In addition, the article explores the law of development of long term settlement, which may be used as reference in the construction and waterproofing of the tunnels of this kind.