狭窄河谷段天然气管道开挖施工方法应用研究  

Study on Excavation Construction Method of Natural Gas Pipeline in Narrow Valley

作　　者：李义祥 Li Yi-xiang

机构地区：[1]大庆油田工程建设公司国内工程事业部西南分公司,黑龙江大庆163000

出　　处：《化工设计通讯》2022年第5期43-45,59,共4页Chemical Engineering Design Communications

摘　　要：山区天然气管道施工常遇到线路穿沿河谷敷设的地貌情况,在这种地貌下通常采用“围堰+引流+大开挖”的施工方法进行天然气管道施工,施工需较大的作业面,但当河谷较为狭窄,两侧坡度较陡,作业面狭小,甚至管沟开挖的土石方都无空间堆放时,如何保证狭窄河谷段天然气管道施工的安全、质量、工期就成为需解决的问题。基于此,开展了一种利用导流管及导流渠将河谷段截流,在狭窄河床上开挖管沟,采用连续混凝土覆盖方式稳管的施工方法,并在楚雄-攀枝花天然气管道工程中取得了良好的应用效果。Using the construction method of“cofferdam+drainage+heavy excavation”to construct the natural gas pipeline in the narrow valley section of mountainous area has many problems,such as poor safety,difficult quality control and long construction period.The construction method of intercepting the valley section by using the diversion pipe and diversion channel,excavating the pipe trench on the narrow riverbed and stabilizing the pipe by continuous concrete covering can effectively solve these problems.

关 键 词：狭窄河谷段 管沟开挖 运管布管 天然气管道 

分 类 号：TE65[石油与天然气工程—油气加工工程]