穿越充填溶洞隧道加固方案优化研究  

Research on the Optimization of Reinforcement Scheme for Tunnel Through Filled Karst Cave

作　　者：李晓林 卿伟宸[3] 王顺然 王怀正 Li Xiaolin;Qing Weichen;Wang Shunran;Wang Huaizheng(China Railway Construction Bridge Engineering Bureau Co.,Ltd.,Tianjin 300300,China;The 2nd Engineering Co.,Ltd.of China Railway Construction Bridge Engineering Bureau Group,Shenzhen 518083,China;China Railway No.2 Institute Engineering Group Co.,Ltd.,Chengdu 610000,China;Tunneling and Underground Structural Engineering Research Institute,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]中国铁建大桥工程局集团有限公司,天津市300300 [2]中铁建大桥工程局集团第二工程有限公司,深圳市518083 [3]中铁二院工程集团有限责任公司,成都市610000 [4]西安建筑科技大学隧道与地下结构工程研究所,西安市710055

出　　处：《北方交通》2024年第6期78-81,共4页Northern Communications

摘　　要：在岩溶地区建设高速铁路隧道,隧道开挖过程中会遇到岩溶空腔和低承载力充填物等问题,采取超前预加固措施至关重要。文章介绍了针对大型低承载力充填溶洞的两种预加固方案,其中大管棚预加固方案使用热轧无缝钢花管进行加固,通过注浆和充填钢管的方式增强围岩强度;小导管预加固方案则通过安装小导管并进行注浆压密,提高岩体的稳定性和密封性。In the construction of high-speed railway tunnels in karst area,problems such as karst cavities and fillings with low-bearing capacity will be encountered during the tunnel excavation,and it is very important to take advanced pre-reinforcement measures.Two kinds of pre-reinforcement schemes for the filled karst caves with large-scale low-bearing capacity are introduced,among which the hot-rolled seamless steel pipes are used for reinforcement in the pre-reinforcement scheme for the large pipe shed,and the strength of the surrounding rock is enhanced by grouting and steel pipe filling.The pre-reinforcement scheme for the small pipe improves the stability and tightness of the rock mass by installing the small pipe and carrying out the grouting and compaction.

关 键 词：隧道 充填溶洞 溶洞探测 加固方案 

分 类 号：U457.3[建筑科学—桥梁与隧道工程]