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通过客运专线隧道工程在复杂的地质条件下,正确选择施工方法,防排水处理,地震区支护形式及衬砌参数改进,浅埋地段加强监控量测等问题进行研究,重点对高速铁路隧道地震区Ⅴ级偏弱围岩病害整治方法进行了探讨。施工实践经验表明:双侧壁导坑法人工配合小挖掘机开挖,仰拱底下设降水井,周边设抗滑桩,及时对周边岩体进行压注水泥浆且封闭成环,加强洞内和地表监控量测,地震区支护和二衬的参数提高是主要控制手段。
Through the tunnel engineering of passenger dedicated line under complex geological conditions, the correct choice of construction methods, drainage and drainage treatment, seismic form of support and lining parameters to improve the shallow section of monitoring and monitoring and other issues to be studied, focusing on high-speed railway tunnel seismic zone Ⅴ class weak surrounding rock disease remediation methods were discussed. The construction practice shows that the excavation of the small excavator by the double-sided pilot excavation method and the dewatering well under the inverting arch and the anti-slide piles in the periphery of the inverting tunnel are adopted in the construction. The surrounding rock mass is pressure- Surface monitoring and measurement, seismic zone support and the lining of the second parameter is to improve the main control measures.