施工技术 2014年9月下 74 CONSTRUCTION TECHNOLOGY 第43卷第18期 D0I:10.7672/sjs2014180074 软岩隧道衬砌开裂机理分析及预防措施* 李皓晖,虞晓卫2,张旺兴,李涛,余莉1 (1.中国地质大学(武汉)工程学院,湖北武汉430074;2.湖北省谷竹高速公路 建设指挥部,湖北十堰442100) [摘要]衬砌开裂是高速公路隧道重要病害之一,穿越软弱片岩区的某高速公路隧道衬砌开裂现象严重,给隧道的 安全施工与运营带来隐患;以该高速公路上某隧道为研究对象,利用现场监测、勘察资料结合室内试验结果,得出 导致该区域衬砌开裂的主要因素:地下水、软岩蠕变和地形偏压.并依据实例针对性地给出了防治措施,取得了较 好的处理效果. [关键词]隧道工程;公路;衬砌;裂缝;防治 [中图分类号]U457.2 [文献标识码]A [文章编号]1002-8498(2014)18-0074-04 Mechanism Analysis and Prevention Measures About Soft Rock Tunnel Lining Cracking Li Haohui Yu Xiaowei Zhang Wangxing' Li Tao Yu Li (1.Faculty of Engineering China University of Geosciences Wuhan Hubei 430074 China; 2.Hubei Province Guzhu Expressway Construction Command Shiyan Hubei 442100 China) Abstract:Lining cracking is a important disease of highway tunnel.The tunnel in a highway appeared serious lining cracking phenomenon which induced many problems to the safety of the tunnel construction and operation.This article takes a tunnel as study object using the on-site monitoring survey data and the results of laboratory experiments the main factors which caused the lining cracking are put forward including groundwater soft rock creep and terrain bias.Based on some practical examples some control measures are taken and a good treatment effect is obtained. Key words:tunnels;roads;lining;cracks;prevention 0引言 湖北省诸多高速公路隧道穿越这一区域,部分隧道 衬砌开裂是高速公路隧道主要病害之一,对隧 出现了大量衬砌开裂现象,严重地影响了隧道的安 道的施工和运营影响重大,一直是研究的重点. 全施工与运营,而针对软弱片岩区的高速公路隧道 Asakura和Kojima对衬砌的变形机理进行了描 衬砌开裂的研究却较少涉及,且鲜有结合软岩区的 述;王...