In this paper, the reconstruction of civil air defence construction, development and layout of cold pipes are reported.
本文是对人防工事的改造、冷管研制和埋设及测试等的研究报告。
Center drift first construction method was adopted in Wushan main tunnel of Fuzhou 961 Civil Air Defence Work, and ground surface deformation was well controlled.
在福州961人防工程乌山主通道工程施工中采用中洞先行的施工方法，地功地控制了地表变形，保证了地表建筑物的正常使用。
Center drift first construction method was adopted in Wushan main tunnel of Fuzhou 961 Civil Air Defence Work, and ground surface deformation was well controlled.
在福州961人防工程乌山主通道工程施工中采用中洞先行的施工方法，地功地控制了地表变形，保证了地表建筑物的正常使用。
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