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隧道的纵向不均匀沉降对其结构内力、变形的影响是不容忽视的,同时对隧道的安全营运以及周围的环境也是一个潜在的威胁。本文结合广州某隧道的水文、地质情况以及隧道沉陷事故发生后施工方所采取的治理措施及监控量测成果,分析该施工隧道发生较大沉降主要因为地形条件、复杂的水文与地质条件、降雨影响、施工工艺,最后,结合监测结果综合采取沉陷治理措施,达到预期的目的和要求。
The longitudinal uneven settlement of the tunnel can not neglect its influence on the internal forces and deformations of the structure. It also poses a potential threat to the safe operation of the tunnel and the surrounding environment. Based on the hydrology and geology of a tunnel in Guangzhou and the measures taken by the construction party after the tunnel subsidence accident and the results of monitoring and measurement, it is analyzed that the major settlement of the tunnel is caused by the topography, complicated hydrology and geological conditions, rainfall Impact, construction technology, and finally, combined with the monitoring results to comprehensively take subsidence control measures to achieve the desired purpose and requirements.