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针对浅埋暗挖公路隧道的特点,对厦门高崎互通下穿嘉禾路隧道进行地表下沉、拱顶下沉、洞内收敛、支撑应力等项目的监测工作。基于监测结果,分析了该隧道围岩和支护系统的变形及受力特点,指出了松软地层中浅埋暗挖隧道开挖影响的时空范围和隧道施工中有效控制围岩变形的措施,并为支护体系的优化提供依据。研究结论丰富了浅埋暗挖思想,并为国内浅埋暗挖公路隧道的设计、施工和监测提供借鉴。
Aimed at the characteristics of shallow buried tunnel, the monitoring work on the projects of surface subsidence, vault settlement, convergence in the cave and support stress was carried out through the Jiahe Road tunnel passing through Gaoqiao, Xiamen. Based on the monitoring results, the deformation and stress characteristics of the surrounding rock and supporting system of the tunnel are analyzed. The temporal and spatial range of excavation affected by the excavation of shallow burying tunnel in soft ground and the measures to effectively control the deformation of the surrounding rock during tunneling are pointed out. Provide the basis for the optimization of the support system. The conclusion of the study enriches the idea of shallow excavation and excavation, and provides references for the design, construction and monitoring of domestic shallow-buried tunnels.