深圳外环高速公路路基与西气东输二线工程近距离并行安全影响分析

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受深圳市土地利用规划控制,西气东输二线天然气管道与深圳外环高速公路较长路段共用同一走廊资源。由于西二线开工建设在先,且两者之间距离较近,外环高速公路路基施工时必然会对西二线正常运营造成影响。为了摸清外环高速路基施工期间各种因素对燃气管运营安全影响的程度,外环高速在测设阶段开展了大量研究工作。本文从施工机械振动、施工车辆碾压、路基爆破影响、运营期安全隐患等多方面进行分析,其相关结论可为类似公路项目建设期间的设计及后期的施工控制提供经验借鉴。 Under the control of Shenzhen Land Use Planning, the second corridor of natural gas from the West to East Gas Pipeline and the longer section of Outer Ring Expressway in Shenzhen share the same corridor resources. Due to the construction of West Second Line started earlier and the distance between the two is relatively close, the construction of the outer ring expressway will inevitably affect the normal operation of West Second Line. In order to find out the impact of various factors on the safety of gas pipe operation during the construction of the outer ring high-speed subgrade, a great deal of research work has been carried out in the Outer Ring Expressway during the measuring and setting stage. This paper analyzes the vibration of construction machinery, the rolling of construction vehicles, the impact of roadbed blasting and the potential safety hazard during operation. The related conclusions can provide experiences for the design of similar highway projects during construction and the later construction control.
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