昨天掘进盾构到达位于长江下面的8.95公里长的第二条交通隧道通道末端。
The digging shield for the second passage of the vehicle tunnel reached the end of the 8.95-kilometer line under the Yangtze yesterday.
盾构掘进法开挖隧道引起的地表沉降对地面建筑物影响在地下工程施工中越来越受到人们的关注，而这个问题的关键是要对地表沉降进行预估。
The influence of surface subsidence on ground building, caused by shield tunneling is concerned by more people, but the key of this problem is to pre-estimate the surface subsidence.
盾构机掘进过程中不但会引起土层的沉降，而且会引起土层沿盾构机前进方向的纵向位移和垂直于隧道掘进方向的横向位移。
Shield tunneling may cause not only the soil settlement, but also the longitudinal and transversal displacements in the respect to direction of shield advancing.
本文主要研究隧道盾构掘进施工中周围受扰动土体应力状态和应变状态的变异，以及由土体应力状态和应变状态的改变引起土体力学性质变异的特性。
The variation of stress state and strain state induced by tunnel shield driving in soils is studied, and the variation of soil mechanical properties is studied too in this paper.
通用楔形管片作为一种较先进的隧道衬砌形式，在盾构法施工中能够较好地控制隧道掘进轴线和管片成环质量。
As a sophisticated tunnel lining type, the universal wedge-shaped segments can do a good job in the control of the axis of the shield-driven tunnel and the quality of the segment ring.
为了实现这一目标，研究与开发新颖异形断面隧道盾构掘进机，是当前各国迫切需要研究解决的重大问题。
In order to realize this object, it is very important to research and develop new special-section shield machine.
最后，对超大型盾构机长距离掘进与深水急流海底沉管隧道的设计、施工等列出其中的若干技术关键问题。
Some key issues related with excavation by a super-large shield machine and the design and construction of immersed tunnel in deep seawater and torrent conditions are also listed.
盾构掘进机是一种广泛应用于地铁、铁路、公路、市政、水电等隧道工程施工的大型机械设备。
Shield machine is a large mechanical device that is widely used in the construction of tunnel engineering such as subway, railway, roadway, city infrastructure, and water and electricity utility.
成都地铁隧道盾构法掘进中，刀具严重磨损成了制约工程顺利进行的一大难题。
Cutting tool wearing has become a difficult problem which restricts the tunnel advance in Chengdu Metro tunnel construction.
因此，研究大型盾构机掘进对周围环境的影响规律对保障隧道施工安全具有重要意义。
Therefore, the study of the influence of shield tunneling on surrounding soil is conducive to improve the safety of tunneling.
因此，研究大型盾构机掘进对周围环境的影响规律对保障隧道施工安全具有重要意义。
Therefore, the study of the influence of shield tunneling on surrounding soil is conducive to improve the safety of tunneling.
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