沉管技术在广西输气管道河流穿越中的应用  

Application of Pipeline Installation Sinking Technique onGuangxi Gas Pipeline River Crossing

作　　者：房海晓 孙禹 Fang Haixiao;Sun Yu(Guangxi Natural Gas Pipeline Co.,Ltd.,Beihai,Guangxi,536000,China)

机构地区：[1]广西天然气管道有限责任公司,广西北海536000

出　　处：《天然气与石油》2020年第4期19-23,共5页Natural Gas and Oil

基　　金：中国石化广西液化天然气(LNG)项目(716101)。

摘　　要：沉管技术在输气管道施工应用中已越来越普遍。广西输气管道工程中,九洲江、郁江和红水河穿越工程根据现场踏勘均采用沉管技术穿越。结合工程实例,通过自然条件的对比,论述了沉管穿越施工中管道预制方法、漂管方式、沉管方式、配重方式、沟底回填和护岸水工保护等方面的技术。三大中型条河流在地形地貌、水下地质条件、水文条件等自然条件上均有很大差异,因此沉管施工方案也各有不同,具有很强的针对性可为同类工程施工提供借鉴。Pipeline installation using sinking technique is gaining popularity in construction of Transmission Pipeline.In Guangxi gas pipeline project,this sinking technique has been applied in river crossings of Jiuzhou River,Yujiang River and Hongshiu River.The three rivers are very different in terms of topography,underwater geological conditions and hydrology,resulting in development of specific sinking technique installation procedure for each specific site.Based on actual field experience,this paper describes how the different environmental conditions give rise to different methods and techniques for pipeline fabrication,pipeline floating,sinking,counterweight selection,trenching backfill and revetment of the river banks.These different methods and procedures of sinking technique can be used as reference for future pipeline construction of the same nature.

关 键 词：管道穿越工程 沉管技术 方案对比 施工技术 

分 类 号：TE973.4[石油与天然气工程—石油机械设备]