tunnel in construction

基本解释

The paper mainly describes the method of piling in pilot tunnel used in construction of the principal part of Dongdan Subway Station in Beijing.
主要介绍北京地铁东单车站采用洞桩支承法进行车站主体工程施工的方法。
Based on the previous research, lattice girder reinforced shotcrete support is dealt with, and a method is set up to evaluate the safety of this kind of support for a tunnel in construction.
在过去研究成果基础上，建立施工期隧道格栅钢架喷混凝土支护的安全性评价方法。
This section includes temporary waterproof and drainage inside and outside the tunnel in construction and permanent waterproof and drainage inside the tunnel, and related works of waterproof layers.
本节工作内容包括隧道施工中的洞内外临时防水与排水和洞内永久防水、排水工程以及防水层施工等的有关作业。

Construction of the tunnel started in November 2007.
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Its subsidiary, Aker Wirth, has construction projects in Iran, including a water tunnel in Ghomroud.
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