摘要
针对北京地区平顶直墙暗挖隧道土体开挖易坍塌、地表沉降量敏感的施工特点,通过对平顶直墙暗挖隧道设计与施工的技术特点进行分析,提出平顶直墙暗挖隧道的设计方法、施工原则与要求;通过对平顶直墙暗挖隧道初期支护断面划分、超前支护、工序转换以及特殊措施的分析总结,提出"优先墙柱二次衬砌法"与"中隔壁保留法"2种原则性平顶直墙暗挖隧道施工步序,并给出了3种常规条件下的典型施工步序,供设计与施工参考。
In the construction of the mined tunnels with flat roofs and straight walls in Beijing, collapse and ground surface settlement may occur. In the paper, the technical difficulties in the design and construction of mined tunnels with flat roofs and straight walls are analyzed, the design method, construction principle and requirement for the mentioned tunnels are proposed, the sequential support, advance support, primary support, construction step conversion and special measures taken for the mentioned tunnels are summarized, and three typical construction sequences are proposed
出处
《隧道建设》
北大核心
2015年第12期1295-1300,共6页
Tunnel Construction
基金
北京市科技计划资助课题(Z131100004513009)
关键词
平顶直墙
暗挖隧道
设计与施工
施工步序
mined tunnel with flat roof and straight wall
design and construction
construction steps
