【摘 要】
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港南隧道(临时名称)是一开挖断面积约143m~2的双孔平行隧道工程,隧道间距仅约9m,覆盖浅,全线在2D以下,且地表为公路、住宅稠密地带。本文主要叙述以抑制地表沉降为目的的有关
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港南隧道(临时名称)是一开挖断面积约143m~2的双孔平行隧道工程,隧道间距仅约9m,覆盖浅,全线在2D以下,且地表为公路、住宅稠密地带。本文主要叙述以抑制地表沉降为目的的有关隧道的支护结构、开挖断面尺寸分割、施工顺序、辅助施工法和量测管理以及一部分施工实绩。
Hong Kong South Tunnel (tentative name) is a two-hole parallel tunnel project with an excavation area of about 143m 2. The tunnel spacing is only about 9m with shallow coverage and full lines below 2D. The surface of the tunnel is densely populated road and residential area. This paper mainly describes the support structure of the tunnel, the size of the excavation section, the construction sequence, the auxiliary construction method and the measurement management as well as some construction achievements in order to restrain the surface subsidence.
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