寒区隧道新型维护型防排水系统研究

目前的寒区隧道防排水系统设计主要倾向于功能设计,而对于防排水的可维护性设计则很少。当隧道发生渗漏时,渗漏源头不易确定,处理起来难度大,费工费时。文章提出背贴充气式止水带和分贴充气式止水带,在渗漏发生时能准确判断渗漏部位,同时实现止水带与混凝土的密贴又能够防止渗水纵向流窜,并由此建立衬砌段可维护性防水的系统;提出中埋充气式止水带,解决普通止水带与混凝土粘结力差的问题,同时,该止水带在接缝发生位移错动后仍能通过再充气实现与混凝土的密贴,并由此建立接缝段可维护性防水系统;提出纵向排水井检查设计方法,解决纵向排水管因结冰或者泥砂淤积的影响,并由纵向排水井建立可维护性排水系统。

Research on New Maintenance Type Waterproof and Drainage System in Cold Area Tunnel

At present, the design of the anti-drainage system of the cold zone tunnel mainly tends to be functional design, while the design of the maintainability of the anti-drainage is rare. When the tunnel leaks, the source of the leak is difficult to determine, it is difficult to handle, and it takes time and labor.The article proposes a back-filled inflatable waterstop and a sub-adhesive inflatable waterstop to accurately determine the leaking site when leakage occurs, and at the same time, the sealing of the waterstop and the concrete can prevent the longitudinal flow of water seepage, and thus Establish a waterproof and waterproof system for the lining section; propose a buried inflatable waterstop to solve the problem of poor adhesion between the ordinary waterstop and the concrete, and at the same time, the waterstop can still pass after the displacement of the joint is displaced. Re-inflation to achieve close contact with concrete, and thus establish a seam-maintainable waterproof system; propose a vertical drainage well inspection design method to solve the effect of vertical drainage pipe due to icing or silt deposition, and can be established by vertical drainage wells Maintenance drainage system.