营运高铁隧道加固施工技术研究

Research on reinforcement construction technology of operating high speed railway tunnel

以青海某运营客运专线隧道二衬加固为例,结合近年来伴随着高速铁路的迅猛发展、营运里程的不断增加实际情况,隧道二衬因施工技术复杂、要求高、难度大、隐蔽性强等特点,验收难以真实全面地反映施工情况,从而导致未发现的施工质量缺陷为后续营运安全留下隐患,通过营运高铁隧道利用天窗进行隧道二衬局部缺陷的加固补强施工方法探索研究,该施工技术能保证铁路运营安全、彻底对隧道二衬缺陷进行整治,对类似工程施工具有一定参考意义。

Taking the reinforcement of tunnel secondary lining of a passenger dedicated line in Qinghai as an example,combined with the rapid development of high-speed railway and the continuous increase of operating mileage in recent years,due to the characteristics of complex construction technology,high requirements,great difficulty and strong concealment,the acceptance of tunnel secondary lining is difficult to truly and comprehensively reflect the construction situation,which leads to the undetected construction quality defects for subsequent operation safety.This construction technology can ensure the safety of railway operation and thoroughly rectify the defects of tunnel secondary lining,which has certain reference significance for similar engineering construction.