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为了解隧道施工中各横断面在纵向上的变形相关性,以湖北谷竹高速宴家隧道为工程背景,对各断面拱顶下沉值和水平收敛值进行全过程监控量测,并利用数值模拟软件ABAQUS进行数值分析。通过对实际施工过程中监控量测和数值模拟结果的分析,总结出在纵向上各断面拱顶下沉和水平收敛与围岩性质的关系,指出拱顶下沉为控制施工的关键因素,是反映围岩稳定性和力学状态最直观的数据。
In order to understand the deformation correlation of each cross-section in the longitudinal direction of the tunnel construction, taking Hubei Guzhu High Speed Banjia Tunnel as the engineering background, the whole process monitoring and measuring of vault subsidence value and horizontal convergence value of each section was carried out. Simulation software ABAQUS for numerical analysis. Through the analysis of the monitoring and numerical simulation results in the actual construction process, the relationship between the dome sinking and the horizontal convergence of each section in the longitudinal direction and the properties of the surrounding rock are summarized. It is pointed out that the dome sinking is the key factor to control the construction. Surrounding rock stability and mechanical state reflect the most intuitive data.