忠武输气管道襄樊支线汉江大开挖穿越施工技术
Crossing Technique of Xiangfan Branch of Zhong-Wu Pipeline through Hanjiang River by Large Excavation
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- DOI:
- 作者:
- 宋华奇
SONG Hua-qi
- 作者单位:
- 中国石油天然气管道第四工程公司, 河北, 廊坊 065000
No.4 Engineering Company of China Petroleum Pipeline Engineering Corporation, Langfang, Hebei 065000 China
- 关键词:
- 输气管道;河道大开挖;水下穿越;施工技术
gas transportation pipeline;large excavation of river course;underwater crossing;con-struction technique
- 摘要:
- 采用主河道大开挖和底拖牵引技术，成功地完成了规格为D406.4mm×9.5mm的输气管道的汉江穿越工程，文章介绍了该项工程的管沟大开挖、水下管沟测量、发送小平车及其回收、牵引力计算、浮筒结构、鹅头结构、牵引设备布置等技术要点。实践证明，管沟的准确测量、牵引力的准确计算与牵引钢丝绳的准确入沟，是汉江穿越成功的技术关键。
The project of D406.4mmx9.5mm gas pipeline crossing through Hanjiang River by largeexcavation and bottom-towing technique is successfully fulfilled. This paper introduces the main technicaloutlines such as large trench excavation,underwater trench survey,pipe launching flat carriage and itsretrieval,calculation of towing force,structure of buoy,structure of goosehead and towing equipment ar-rangement.2005,4(4): 43-45 收稿日期：2004-11-12分类号：TE973.4作者简介：宋华奇(1954— ），男，吉林双辽市人，高级工程师，毕业于管道职工学院线路工程专业，长期从事长输管道施工技术及管理工作。参考文献：
[1] SL257-2000,水道测量规范[S] .[2] SY/T0055-2003,长距离输油输气管道测量规范[S] .[3] SY/T4079-95,石油天然气管道穿越工程施工及验收规范[S] .