城市轨道交通明挖隧道开挖技术

EXCAVATION TECHNOLOGY OF OPEN CUT TUNNEL IN URBAN RAIL TRANSIT

以广佛环线城市轨道工程为依托,通过理论分析与现场实践相结合的技术手段,对于城市轨道交通明挖隧道开挖的施工方案和方法进行了研究,其研究成果如下:(1)将明挖法和工程相结合进而提出相适应的开挖支护方案,并采取相关辅助措施,所得施工结果与预期相符,且施工全程均未发生安全事故,该技术具有较好的应用效果;(2)针对广佛环线城市轨道工程提出的垂直开挖和分层分段开挖方法具有足够的适用性和针对性。

Based on the Guangzhou~Foshan ring line urban rail project, through the combination of theoretical analysis and field practice, the paper studies the construction scheme and method of open cut tunnel excavation near the road, and the research results are as follows.(1)Combining the open cut method with the project, the appropriate excavation and support scheme is put forward, and relevant auxiliary measures are taken.The construction results are consistent with the expected ones, and there are no safety accidents in the whole construction process. The technology has good application effect.(2)The vertical excavation and layered and segmented excavation methods proposed for the urban rail project of Guangzhou~Foshan ring line have sufficient applicability and pertinence.