北京新街口人防设施改造隧道支护方案

Tunnel support scheme of the civil air defence facilities reform in Xinjiekou in Beijing

结合工程概况及场地地质条件,提出了隧道施工方案,对其施工流程及工艺要点进行了论述,并对隧道二次衬砌施工方案的技术要点作了总结,解决了新建东西向转河断面与现况新街口大街道路下南北向人防通道标高冲突的问题。

Combined with the engineering situation and the geologic site condition, the author puts forward the construction schemes of the tarred, discuses the construction process and the technology points, summarizes the construction schemes of the secondary lining of the tunnel, solves the problems that the elevation of the new east west direction river course section and the ns-trending civil air defence channel under the Xinjiekou street conflicts.