基岩完整隧道衬砌环向裂缝成因分析及其防治措施

摘要

Settlement monitoring and measuring of the ground settlement, crown settlement, convergence, surrounding rock pressure and internal force in the lining were performed at a shallow-buried hydraulic tunnel in loose ground based on the practices used for the South-North Water Diversion Project. Analysis of the ground deformation characteristics of the tunnel was carried out, and the deformation law and coverage of the excavation are presented.%文章通过向莆铁路线七座完整基岩隧道二次衬砌环向裂缝的统计,对隧道衬砌开裂的原因进行了综合分析,阐述了混凝土结构裂缝的危害大小程度,以及设计及施工管理过程中对衬砌裂缝的控制途径,并对此提出了相应的处理措施和建议.