摘要
在新疆天山高海拔山区,隧道具有高寒、富水、地质条件复杂等特点。在这些恶劣环境下隧道衬砌容易出现空洞、混凝土松散不密实以及与围岩接触不良等质量问题,导致衬砌厚度不足,强度不符要求,出现严重的渗漏水等问题,影响隧道的安全运营。文章基于玉希莫勒盖隧道工程实例,采用地质雷达对衬砌进行探测,以检测其厚度、密实程度、钢筋布置以及围岩空洞等缺陷情况,对发现的衬砌缺陷进行了汇总,分析了缺陷产生原因,并提出了合理的修缮方法,为寒区隧道施工及质量验收提供了依据。
Highway tunnels located in high-altitude mountains such as Xinjiang Tianshan have the characteristics of alpine, water-abundant and complex geological conditions. Therefore, cavities in the tunnel linings, non-dense concrete and bad contact with the surrounding rock mass are likely to occur in these harsh environments, leading to insufficient lining thickness and concrete strength and severe water leakage while affecting the safe operation of the tunnel. In this context the Yuximolegai tunnel lining was tested using ground penetrating radar and examining thick-ness, degree of compaction, cavities and layout of steel reinforcement. This paper summarizes the lining defects, ana- lyzes the causes of defects and puts forward reasonable repairing methods, providing a basis for the construction and quality assurance of high-altitude tunnels.
出处
《现代隧道技术》
EI
CSCD
北大核心
2016年第1期187-191,201,共6页
Modern Tunnelling Technology
基金
国家自然科学基金(51374199
51204168)
关键词
隧道工程
衬砌质量检测
地质雷达
寒区
Tunnel engineering
Lining quality testing
Ground penetrating radar
Yuximolegai tunnel
Cold region
