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A master plan for metro expansion

机译:地铁扩建总体规划

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摘要

Of the entire metro system of Mexico City, some 215km, the new Line 12 is being built in the most difficult ground conditions. The geology is mainly clay with sand containing boulders up to 800mm in diameter. For this a 10.2m diameter Robbins EBP TBM is being used, the first ever in the city. However, that wasn't always the plan, looking back to the project's inception. All other metro lines in the city have been built using cut-and-cover and have been in better ground, explains Ismail Benamar, project manager with Ingenieros Civiles Asociados (ICA), which is not only the contractor for this project—in a consortium with Grupo CARSO and Alstom—but has also built many of those metro lines. In fact his company did much of the groundwork paving the way for the whole system.
机译:在整个墨西哥城大约215公里的地铁系统中,新的12号线正在最困难的地面条件下建造。地质学主要是粘土和含砂砾,直径最大为800mm。为此,使用了直径为10.2m的Robbins EBP TBM,这是该市有史以来的第一个。但是,回顾项目的开始,这并不总是计划。 Ingenieros Civiles Asociados(ICA)的项目经理Ismail Benamar解释说,该市的所有其他地铁线路都是采用挖方和掩盖的方式建造的,并且该联盟不仅是该项目的承包商,而且还是一个财团与Grupo CARSO和阿尔斯通(Alstom)合作,但也修建了许多地铁线路。实际上,他的公司做了很多基础工作,为整个系统铺平了道路。

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