城市景区大跨负埋深隧道半盖半挖施工应用  

Application of Covering with Excavating Engineering of Longspan Negative Deep-depth Tunnel in City Scenic Spots

作　　者：王建望[1] 李立强[1] 蒋琦[1] 

机构地区：[1]中铁一局集团第五工程有限公司,宝鸡721006

出　　处：《价值工程》2015年第11期83-85,共3页Value Engineering

摘　　要：本文根据城市景区大跨负埋深隧道施工特点,介绍了处于山高林密间飞地的负埋深露头段隧道,利用已开挖隧道做通道强行出洞、做初期支护保护壳、边盖边挖、二次进洞开挖、预留投料孔施工护拱的绿色环保施工方法,创造性的解决了地处景区、林区露头隧道施工的难题,取得了较好的经济、社会效益,加快了施工进度。According to the construction characteristics of the half covered and half excavated engineering of longspan negative deep-depth tunnel in the city scenic spot, this paper introduces the negative deep-depth tunnel in the mountains, forest and enclave. It uses the construction methods of green environmental protection such as forcing out of the hole by the excavation tunnel, making the early supporting protection shell, covering with digging, secondary hole excavation and protecting the arch by the reserved feeding hole construction. The methods creatively solve the problems of outcrop tunnel construction in the scenic spots and forest, achieve good economic and social benefits and accelerate the construction progress.

关 键 词：景区 负埋深隧道 半盖半挖 应用 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]