软岩公路隧道泡沫混凝土卸压原理及支护方式研究  

Study on Pressure Relief Principle and Supporting Method of Foam Concrete in Soft Rock Road Tunnel

作　　者：程秋月[1] 高延安 CHENG Qiu-yue;GAO Yan-an(Department of Civil Engineering,Chuzhou Vocational and Technical College,Chuzhou 239000,Anhui,China;School of Architectural Engineering,Huaiyin Institute of Technology,Huaiyin 223300,Jiangsu,China)

机构地区：[1]滁州职业技术学院土木工程系,安徽滁州239000 [2]淮阴工学院建筑工程学院,江苏淮阴223300

出　　处：《贵阳学院学报（自然科学版）》2020年第2期16-19,32,共5页Journal of Guiyang University：Natural Sciences

摘　　要：随着西部战略实施脚步的逐步加快,我国交通类基础设施建设逐步加快。受制于西部特殊的地质条件和特殊的环境因素,在建设道路的过程中,实施软岩公路隧道是所有施工人员必将面临的难题。文章针对软岩公路隧道围岩稳定性差,运营成本高的问题,对软岩公路隧道泡沫混凝土卸压原理及支护方式进行了研究。首先,介绍了泡沫混凝土的力学模型,并分析了其力学性能,然后研究了其卸压原理。最后基于以上研究,分析了卸压的基本机理,并提出了一种复合式衬砌结构。本文所做研究为后续软岩公路隧道泡沫混凝土卸压工作的开展提供了一种新思路,也奠定了一定的理论模型基础。With the gradual acceleration of the implementation of the western strategy,China's transportation infrastructure construction is gradually accelerating.Due to the special geological conditions and special environmental factors in the west,the implementation of soft rock highway tunnel is a difficult problem for all constructors in the process of road construction.In view of the poor stability and high operation cost of soft rock highway tunnel,the pressure relief principle and supporting method of foam concrete in soft rock tunnel are studied.First,the mechanical model of foam concrete is introduced,and its mechanical properties are analyzed.Then the pressure relief principle is studied.Through the simplification of the tunnel model,the influence factors of the application of foam concrete in the construction process on the pressure relief effect and the influence of mechanical parameters on the pressure relief performance are analyzed.Finally,based on the above research,the basic mechanism of pressure relief is analyzed and a composite lining structure is proposed.The research in this paper provides a new idea for the development of foam concrete unloading work in soft rock tunnel,and lays a foundation for theoretical model.

关 键 词：软岩公路 泡沫混凝土 卸压 支护方式 

分 类 号：U455.7[建筑科学—桥梁与隧道工程]