盾构技术是在地面下暗挖隧洞的一种施工方法。它使用地铁盾构机在地下掘进，在防止软基开挖面崩塌或保持开挖面稳定的同时，在机内安全地进行隧洞的开挖和衬砌作业。其施工过程需先在隧洞某段的一端开挖竖井或基坑，将地铁盾构机吊入安装，地铁盾构机从竖井或基坑的墙壁开孔处开始掘进并沿设计洞线推进直至到达洞线中的另一竖井或隧洞的端点。
目前浅埋盾构隧道技术己相当成熟，深埋隧洞盾构技术的专项研究很少。
At present, shallow shield tunneling technology has been very mature, but very few specific study was conducted on deep tunnel shield tunneling technology.
盾构技术在城市地铁建设中的应用越来越普遍，但国内关于盾构衬砌的整体试验做得较少。
The technology of shield tunnel is widely used in the construction of subway, although the test of integral shield tunnel lining is seldom carried on at home .
随着我国一些跨流域长距离调水工程的相继兴建，深埋输水盾构技术得到了越来越广泛的应用。
Along with a number of long-distance inter-basin water transfer projects have been built, deep water transfer shield technology has been more and more widely used.
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