宜万铁路某隧道溶腔段帷幕注浆施工技术

Curtain Injecting Paste Construction Technology of a Cavity Section along Yichang-Wanzhou Railway

应用帷幕注浆施工方法处理宜万铁路某隧道溶腔,根据现场地质条件提出了具体的施工方案、工艺要点及施工方法,并对注浆参数、注浆工艺流程、注浆材料、注浆设备、注浆施工过程和注浆控制标准等关键问题进行了详细的阐述。该帷幕注浆施工方法安全经济、可操作性强,对岩溶地区的溶腔注浆施工处理具有重要的借鉴意义。

Carbonates are widely distributed along Yichang-Wanzhou railway,and also karst is strongly developed in this area. Based on a project example along Yichang-Wanzhou railway, the curtain injecting paste construction method is used to deal with the dissolved cavity of the tunnel. According to geological conditions, the concrete plan of construction is proposed and the main craft points and the construction method are proposed. Some key problems, including parameters, flow chart of curtain injecting paste, materials, equipment for borehole and injecting paste, and the construction process and control standards of injecting paste are discussed in detail. This method is safe, economical and feasible, and has important reference significance for the construction and treatment of dissolved cavities in karst areas.