寒区隧道衬砌挂冰病害成因及预测预警技术*

doi:10.16265/j.cnki.issn1003-3033.2019.S2.029

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (S2): 174-180.doi: 10.16265/j.cnki.issn1003-3033.2019.S2.029

寒区隧道衬砌挂冰病害成因及预测预警技术^*

严晓东¹ 高级工程师, 伍毅敏² 副教授, 许鹏² 工程师, 傅鹤林² 教授, 孟超³ 高级工程师, 秦宏³ 工程师

1 中国铁路哈尔滨局集团有限公司,黑龙江哈尔滨 150000;
2 中南大学土木工程学院,湖南长沙 410075;
3 国家铁路局工程质量监督中心,北京 100891

收稿日期:2019-08-30 修回日期:2019-09-29 出版日期:2019-12-30 发布日期:2020-10-28
作者简介:严晓东 (1972—),男,黑龙江宾县人,本科,高级工程师,主要从事铁路路基、桥梁、隧道病害防控及整治方面的工作。E-mail:Yanxiaodong1972@163.com。
基金资助:
国家自然科学基金资助(51478473);中国铁路总公司重点科技研究开发计划(K2018G019)。

Study on causes of frost damage of ice covering on lining in cold region tunnelsand forecast and early warning technology

YAN Xiaodong¹, WU Yimin², XU Peng², FU Helin², MENG Chao³, QIN Hong³

1 China Railway Harbin Group Co., Ltd., Harbin Heilongjiang 150000, China;
2 School of Civil Engineering, Central South University, Changsha Hunan 410075, China;
3 Center of Engineering Quality Supervision, National Railway Administration, Beijing 100891, China

Received:2019-08-30 Revised:2019-09-29 Online:2019-12-30 Published:2020-10-28

摘要/Abstract

摘要： 为改善寒区高铁隧道衬砌表面挂冰病害,保障高铁隧道运营安全,开展挂冰成因和预测预警技术研究。首先总结隧道内结冰类型,分析隧道防水抗冻经时失效的原因;然后提出可维护隧道施工缝防水抗冻构造以改善施工缝冻害问题;最后利用基于物联网技术的隧道结冰预测预警系统指导除冰工作。结果表明:防水层在服役期间受围岩压力和循环剪切力的作用失效,隧道排水系统在运营过程中发生淤积、堵塞,布设与初期支护与二次衬砌间的保温层在受压浸水冻融循环条件下迅速破坏并导致保温失效是隧道防水抗冻失效的原因;可维护的隧道施工缝防水抗冻构造在原结构上增加了泄水孔、维护孔和密封环,可通过维护孔更换密封环。

关键词: 寒区隧道, 衬砌挂冰, 预测预警, 冻害, 物联网

Abstract: Inorder tohelp solve ice problem on the lining surface to ensure operation safety in cold region tunnels, the causes and early warning technology of icingwere studied. Firstly,main types of icing problems in tunnelswere summarized,reasons for failure of waterproof and insultation measures were analyzed. And then, a maintenance joint structure and freezing forecast and prewarning method were proposed to deal with the icing problem. Finally, the tunnel icing prediction and early warning system based on Internet of Things technology was used to guide deicing work. The results show that waterproofing layer is injured by surrounding rock pressure and shear force during service, tunnel drainage system is silted and blocked during operation, and compressed insulation layer between the initial support and the second lining gradually failed under the freeze-thaw cycles, all of these leading to the failure of waterproof and insultation measures, and that the maintenance joint structure introduces the drainage hole, the seal ring and the maintenance hole, which realizes the renewal of the seal ring.

Key words: tunnel in cold region, ice covering, forecasting and earlywarning, frost damage, internet of things

中图分类号:

X951

严晓东, 伍毅敏, 许鹏, 傅鹤林, 孟超, 秦宏. 寒区隧道衬砌挂冰病害成因及预测预警技术^*[J]. 中国安全科学学报, 2019, 29(S2): 174-180.

YAN Xiaodong, WU Yimin, XU Peng, FU Helin, MENG Chao, QIN Hong. Study on causes of frost damage of ice covering on lining in cold region tunnelsand forecast and early warning technology[J]. China Safety Science Journal, 2019, 29(S2): 174-180.

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寒区隧道衬砌挂冰病害成因及预测预警技术^*

Study on causes of frost damage of ice covering on lining in cold region tunnelsand forecast and early warning technology

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