隧道拱墙排水板通水能力试验研究

Research on the Water Flow Capacity Test of Drainage Board on Tunnel Arch Wall

我国铁路隧道防排水设计遵循“防、排、截、堵结合,因地制宜,综合治理”的原则,通常富水区段拱墙部位会设置排水板,以加强排水,由于排水板为点状凸壳异形结构,其排水能力目前只停留在理论计算层面。为了研究隧道拱墙排水板的实际通水能力,文章以新建某铁路隧道为依托,选取隧道某一区段(10 m)开展排水板通水能力试验研究,得出排水板的排水响应速度约为5 min,其最大排水能力可达3.37 m^(3)/h。文章研究结果为优化产品结构、改善隧道防排水现状及制定标准提供了技术参考。

The waterproof and drainage design of railway tunnels in China follows the principle of "combining prevention,drainage,interception and plugging,adapting to local conditions,and treating comprehensively".Usually,drainage boards are set up on the arch wall in water-rich section to strengthen drainage.Because the drainage board is a point-like convex shell special-shaped structure,its drainage capacity only stays at the theoretical calculation level at present.In order to study the actual water flow capacity of the drainage board on the tunnel arch wall,based on a new railway tunnel,a section(10 m) in the tunnel is selected to carry out the research on the water flow capacity test of the drainage board.It is concluded that the drainage response speed of the drainage board is about 5 min,and its maximum drainage capacity can reach 3.37 m^(3)/h.The research results of this paper provide technical reference for optimizing product structure,improving current tunnel waterproof and drainage status,and formulating standards.