摘要
通过裂缝仪、地质雷达等设备对隧道病害进行了现场调查。根据病害特征,将隧道病害分为裂缝、渗水滴水、衬砌背面脱空三类。根据裂缝是否渗水,进一步细分为渗水裂缝和非渗水裂缝。根据裂缝发展方向,进一步细分环向裂缝和纵向裂缝。根据裂缝深度,分为浅表裂缝和较深裂缝。对裂缝和脱空病害进行分类统计,并分析了病害形成原因。结果表明:隧道裂缝以环向裂缝为主,约占90.2%;浅表裂缝以环向裂缝为主,占比达到87.5%;渗水主要发生在伸缩缝处,占比达到48.9%;脱空位置以拱顶为主,拱顶脱空占比达到70%。建议:对于裂缝发展深度较深、长度较长的病害,在表面用环氧砂浆补平的基础上,粘贴钢板双提供其承载力;对于裂缝深度较小、分布数量较多、面积较大的裂缝病害,采用注浆加固的方式处治;对于局部渗水漏水的部位,采用封堵的方式处理;对于渗水漏水严重、面积较大的部位,先采取开沟汇集排水,然后再密封加固处理;针对隧道衬砌背部脱空,采取注浆加固处理。
On site investigation of the tunnel diseases were conducted using equipment such as crack detectors and geological radar.According to the characteristics of the disease,the disease can be divided into three types:cracks,water seepage and water dripping,and lining back void.According to whether the cracks are permeable,they can be further divided into permeable cracks and non-permeable cracks.According to the direction of crack development,it further subdivides circumferential cracks and longitudinal cracks.According to the depth of the cracks,they are divided into shallow cracks and deeper cracks.It classifies and statistically analyzes cracks and void diseases,and analyzes the causes of disease formation.The results show that tunnel cracks are mainly circumferential cracks,accounting for about(90.2%);Shallow cracks are mainly circumferential cracks,accounting for(87.5%);Water seepage mainly occurs at expansion joints,accounting for(48.9%);The main location of the void is the arch crown,with a void ratio of 70%.Suggestion:For the disease with deep and long crack development,on the basis of filling the surface with epoxy mortar,steel plates should be pasted to provide bearing capacity;For the cracks diseases with small depth,large distribution and large area,grouting reinforcement is used for treatment;For areas with local water seepage and leakage,sealing should be used for treatment.For areas with serious water seepage and leakage and large area,the first step is to open ditches to collect and drain water,and then seal and reinforce them;Grouting reinforcement treatment is adopted to address the void at the back of the tunnel lining.
作者
田正忠
康慧
胡良坤
TIAN Zhengzhong;KANG Hui;HU Liangkun(Shaanxi branch,Jiangxi Dongtong Transportation Technology Co.,Ltd.,Xianyang,Shaanxi Province,712000 China)
出处
《科技资讯》
2025年第9期180-183,共4页
Science & Technology Information
关键词
隧道工程
病害
成因分析
处治措施
Tunnel engineering
Disease
Cause analysis
Treatment measures
