寒区隧道洞外排水及防冻方案优化设计

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【摘    要】： 考虑当前寒区隧道以排为主的防水方式容易在隧道洞口范围发生冻害，对一座寒区隧道洞外排水及防冻设计方案进行了比选和优化，提出一种通过渗井解决寒区隧道洞外排水及防冻问题的新思路，能够较好解决寒区隧道由围岩裂隙水排放引起的冻害问题，同时减少了地下水的流失。

【关键词】： 寒区；隧道；渗井；排水；防冻

【中图分类号】：U453.6 【文献标志码】：C 【文章编号】：1008-3197（2023）06-34-04

【DOI编码】：10.3969/j.issn.1008-3197.2023.06.010

Optimal Design of Drainage and Antifreezing Scheme Outside Tunnel

in High Cold Area

QIAO Jiangang， ZHENG Shaohua， HE Zhiwei， WANG Rongxin

（Tianjin Municipal Engineering Design & Research Institute Co.Ltd.， Tianjin 300392，China）

【Abstract】：Considering the waterproofing method mainly based on drainage is prone to freezing damage within the tunnel portal area in cold regions， this paper compared and optimized the drainage and antifreeze design scheme of a tunnel which is in cold region， and proposed a new approach to solve the problem of freezing damage caused by the drainage of surrounding rock fissure water in cold region tunnels through seepage wells. This approach can effectively solve the problem of freezing damage caused by the drainage of surrounding rock fissure water in cold region tunnels，at the same time， it also reduces the loss of groundwater.

【Key words】：cold area；tunnel；seepage well；drainage；antifreeze

近年来，随着我国公路事业长足发展，公路隧道里程呈加速增长趋势，越来越多的寒区隧道进入工程建设序列[1]。（剩余3244字）