With the wide use of Shield tunneling method in important substructure works in our country, it has become a major method applied in city subway construction.

盾构施工技术在我国重大地下工程的应用越来越广泛，已经成为了城市地下铁道建设的主要方法。

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In city subway construction, ensure the vicinity building and the underground pipeline's security are very important, for security construction, must build up effective site monitoring.

在城市地铁施工中，保证周围建筑物、地下管线等的安全非常重要，为了安全施工，必须建立起有效的监控量测。

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The city subway construction being taken as the object, the high accuracy direction survey technology at the various stages of the modern city underground project was studied in the paper.

本文以城市地铁建设为对象，对现代城市地下工程各阶段的高精度测量技术进行了研究。

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Two deadly collapses in 2008 spurred reforms and even criminal charges, but another crane fell and killed a worker in the city just this past April, at a subway construction site largely exempt from city safety rules.

WSJ: APNewsBreak: Operator cited in NYC crane collapse

When Superstorm Sandy hit the city last October, floodwaters washing over the East Side did not penetrate subway construction sites.

NPR: New York Expanding Nation's Biggest Transit Hub