桃树垭隧道底鼓发生机理与防治技术研究  

Mechanism analysis of floor heave in Taoshuya tunnel and its prevention techniques

作　　者：钟祖良[1,2] 刘新荣[1,2] 王道良[3] 郑成果[1] 黄明[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [3]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《岩土工程学报》2012年第3期471-476,共6页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金李晓红创新群体基金项目(50621403);国家自然科学基金项目(51108485);重庆市科委自然科学基金计划资助项目(CSTC;2009BB6350)

摘　　要：针对桃树垭隧道底鼓灾害,采用现场调查、地质勘察等手段对隧道底鼓的发生机理及主要影响因素进行分析,并运用连续介质力学原理对影响软岩隧道底鼓的主要因素(底板岩层压曲、膨胀和流变)引起的底鼓量计算理论进行推导。通过与现场监测值进行对比,该理论研究成果能够较好的预测隧道底鼓量,为该隧道后续洞施工时底鼓量预测和底鼓处理方案提供理论依据。此外,针对软岩隧道底鼓的特点,提出了相应的防治措施,为类似工程建设提供参考。Based on the disaster of floor heave in Taoshuya tunnel,the occurrence mechanism and important influencing factors of tunnel floor heave are analyzed by means of the method of field observation and geological prospecting.Furthermore,the calculating theory of floor heave of soft rock tunnel is deduced by using the continuum mechanics.According to the comparison result between predictive values and field monitoring data,it is proved that the deformation of floor heave of the tunnel can be simulated well by the proposed method,which provides a theoretical basis for calculating the floor heave of subsequent tunnels and treatment measures.Besides,the corresponding prevention techniques for floor heave of soft rock tunnels are obtained.It will be helpful for construction of other projects.

关 键 词：软岩隧道 防治技术 发生机理 底鼓 桃树 理论研究成果 现场调查 影响因素 

分 类 号：U456[建筑科学—桥梁与隧道工程]