[1]刘龙卫,孙源.寒区隧道新型环向盲沟排水体系及温度场分析[J].高速铁路技术,2020,11(04):55-59,104.[doi:10.12098/j.issn.1674-8247.2020.04.011]
　LIU Longwei,SUN Yuan.Analysis of New Circular Blind Drainage System and Temperature Field of Tunnel in Cold Region[J].HIGH SPEED RAILWAY TECHNOLOGY,2020,11(04):55-59,104.[doi:10.12098/j.issn.1674-8247.2020.04.011]
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寒区隧道新型环向盲沟排水体系及温度场分析()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
11卷
期数:
2020年04期
页码:
55-59,104
栏目:
出版日期:
2020-08-28

文章信息/Info

Title:
Analysis of New Circular Blind Drainage System and Temperature Field of Tunnel in Cold Region
文章编号:
1674—8247(2020)04—0055-05
作者:
刘龙卫;  孙源
1. 中铁隧道集团一处有限公司, 重庆 401123;
2. 西南交通大学, 成都 610031
Author(s):
LIU Longwei;  SUN Yuan
1. The First Construction Division Co., Ltd. of China Railway Tunnel Group, Chongqing 401123, China;
2. Southwest Jiaotong University, Chengdu 610031, China
关键词:
寒区隧道|温度场|环向盲沟|隧道排水
Keywords:
tunnel in cold region|temperature field|circumferential blind ditch|tunnel drainage
分类号:
U453.6
DOI:
10.12098/j.issn.1674-8247.2020.04.011
文献标志码:
A
摘要:
寒冷地区的隧道常发生冻害问题，大多是由排水系统的冻结引起的。针对这一问题，结合冬季降温和春季升温时隧道围岩温度的变化特点，本文提出了一种环向盲沟保温排水结构体系：在隧道衬砌后的围岩内沿环向设置排水盲管，盲管由宽幅1m保温混凝土填充的环向盲沟进行保温，环向排水管由上而下直通排水横沟汇集排水。对围岩温度场的有限元数值模拟分析结果表明：通过在保温环向盲沟后设置环向排水管，结合在两盲沟环向排水管之间的防水板后环向排水管，无论是在降温冻结期还是在升温融化期，均能保证排水系统的通畅。
Abstract:
Freezing damage often occurs in tunnels in cold areas, which is mostly caused by freezing of the drainage system. To solve this problem, considering the temperature change characteristics of tunnel surrounding rock with the temperature drop in winter and temperature rising in spring, this paper puts forward a circular blind drainage and insulation system: setting drainage blind pipe in the surrounding rock behind tunnel lining along the circular direction, with insulation provided by the circular blind ditch filled with 1m wide insulation concrete; the circular drainage pipe leads to the horizontal ditch from top to bottom. The results of finite element numerical simulation analysis on the temperature field of surrounding rock show that the drainage system can be ensured to be smooth no matter during the freezing period or the heating melting period, by setting the circular drainage pipe behind the insulation circular blind ditch and the waterproof board rear circular drainage pipe between the two blind ditch circular drainage pipes.

备注/Memo

备注/Memo:
作者简介:刘龙卫(1980-),男,高级工程师。引文格式:刘龙卫, 孙源. 寒区隧道新型环向盲沟排水体系及温度场分析[J].高速铁路技术, 2020, 11(4):55-59.LIU Longwei, SUN Yuan. Analysis of New Circular Blind Drainage System and Temperature Field of Tunnel in Cold Region[J]. High Speed Railway Technology, 2020, 11(4):55-59.
更新日期/Last Update: 2020-08-28