摘要
研究目的:目前二次衬砌环向施工缝的防水问题,主要采用中埋式止水带防水材料治理,但施工过程中往往会出现止水带扭曲、上浮、位移、倾倒等问题,导致施工质量难以保证。因此,本文采用室内试验手段,对矿山法隧道二次衬砌施工缝水泥基渗透结晶型防水涂料和非渗油型蠕变橡胶防水涂料两种新型防水材料的防水效果进行了研究。研究结论:(1)防水涂料的类型和施作方式与水压强度密切相关,需依据水压强度合理选择;(2)灰尘会影响防水涂料与基材的粘结性,有尘情况会明显降低防水性能;(3)凿毛工艺对非渗油型蠕变橡胶防水涂料施工缝的抗渗性能影响较小;(4)研究成果可为矿山法隧道防水技术的发展以及隧道支护结构安全性的控制提供参考。
Research purposes:At present,the waterproofing problem of the secondary lining circumferential construction joint mainly adopts the medium-buried waterproof material.However,during the construction process,problems such as twisting,floating,displacement and tipping of the waterstop often occur,making it difficult to ensure the construction quality.Therefore,this article adopts indoor experimental methods to study the waterproof effects of two new waterproof materials,cement-based permeable crystalline waterproof coating and non-oil permeable creep rubber waterproof coating,on the construction joints of the secondary lining of mining tunnels.Research conclusions:(1)The type of waterproof coating and application method is closely related to the hydraulic strength,and need to be based on the hydraulic strength of reasonable choice.(2)Dust will affect the adhesion of waterproofing coatings and substrates,there is a dusty situation will significantly reduce the waterproofing performance.(3)Chiseling process on the non-oil-permeable creep rubber waterproofing coatings construction joints of impermeable performance of the influence of a small.(4)The research results can provide a reference for the development of waterproofing technology for the tunnel of the mining method as well as the control of the safety of tunnel support structure.
作者
何永义
上官宇文
刘大刚
王洋洋
王志龙
王明年
HE Yongyi;SHANGGUAN Yuwen;LIU Dagang;WANG Yangyang;WANG Zhilong;WANG Mingnian(Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;Southwest Jiaotong University,Chengdu,Sichuan 610031,China)
出处
《铁道工程学报》
北大核心
2025年第5期104-108,121,共6页
Journal of Railway Engineering Society
基金
重庆市交通科技项目(2022-05)
中国国家铁路集团有限公司系统性重大项目(P2018G048)
成都市科技计划项目(2022-XT00-00002-GX)。
关键词
矿山法隧道
二次衬砌
施工缝
防水材料
室内试验
mining tunnel
secondary lining
construction joints
waterproof material
indoor test
