齐岳山隧道穿越高压富水宽张裂隙注浆堵水施工技术

齐岳山隧道是我国在建的宜昌至万州铁路线的关键性控制工程之一,隧道的主要工程地质问题有暗河、断层、宽张裂隙及伴随的高压涌(突)水、岩溶涌(突)水、高应力及煤层瓦斯等,所以隧道在修建过程中需采用多种辅助工法穿越众多的不良地质段。主要介绍和探讨该隧道穿越富含高压水的宽张裂隙时所采用的超前帷幕注浆堵水施工技术,为今后在类似工程中施工提供借鉴。

Grouting Technology Applied in Qiyueshan Railway Tunnel Passing through the Broad Patulous Cranny

Qiyueshan Tunnel is one of the key projects that are being built in the Yichang-Wanzhou railway line. Some major engineering geological problems of the Qiyueshan Tunnel exist in engineering construction such as underground river, fracture, broad patulous cranny, high pressure water burst, karst water burst, high stress, coal seam methane and so on. So different auxiliary techniques should be used in order to pass through numerous harmful geological zones in the process of construction. What we introduce and investigate in this paper is pre-drapery injected technique which was used to pass through broad patulous crannies full of high hydraulic pressure in the construction of Qiyueshan Tunnel, which we hope might be used as a source of reference in future similar projects.