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.
主要介紹北京地鉄東單車站採用洞樁支承法進行車站主躰工程施工的方法。
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.
在過去研究成果基礎上，建立施工期隧道格柵鋼架噴混凝土支護的安全性評價方法。
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.
本節工作內容包括隧道施工中的洞內外臨時防水與排水和洞內永久防水、排水工程以及防水層施工等的有關作業。

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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