摘要
针对季冻区隧道渗漏水与冰冻产生的原因,提出了采用防水、排水、保温、供热等方法进行综合防治的工程措施,其中包括:防水板选用低温性能好的材料,并在防水层敷设前尽量降低喷射混凝土表面的粗糙度,以保持防水层的长期完好;在衬砌施工缝中,采用先排后堵的可排水止水带;在衬砌下隅角背后,设置保温层,并使之防潮;在衬砌紧靠防水层一侧,设置环向电加热带,必要时通电加热使上部渗水顺畅下排。
To counter the reasons of tunnel leakage and freezing turned up in seasonally frozen zone, comprehensive techniques to prevent the problems are presented. The techniques include: (1) choosing water-proof material with good properties at low temperature, and smoothing the surface of shot-concrete to keep the water-proof membrane in good condition over a long period of time; (2) installing drainage water stop between the water-proof layer and the lining to supply the passage for the water which has passed through the layer; (3) setting up thermal insulating layer on the back of lining at the bottom corners and preventing the layer from moist; and (4) installing electro-thermal wires between the water-proof layer and the lining, and electrifying to melt the ice on the back of lining when necessary.
出处
《公路》
北大核心
2005年第6期194-198,共5页
Highway
