中部引黄总干2#隧洞7#支洞下穿沟道积水区施工方案研究

Research on Construction Scheme of No.7 Branch Tunnel of No.2 Tunnel in the Central Yellow River Diversion Project Underrunning Water Accumulated Area of Channel

引水隧洞工程施工是一项风险较高的技术工作,具有技术手段多样,潜在危险因素多,开挖过程不可预料,施工状态不好控制等特点,对隧洞安全施工造成隐患。文中通过对中部引黄工程隧洞下穿沟道集水区的条件进行分析,提出了保障隧洞安全施工的措施。

Diversion tunnel construction is a high-risk technology. The characteristics of multiple technical means,many potential risk factors, unforeseen excavation process and uncontrollable construction state will lead to security threat to tunnel construction. Conditions of tunnel in the Central Yellow River Diversion Project underrunning the water accumulated area of channel were analyzed in this paper. Measures for ensuring safe construction of tunnel were proposed.