丘陵地区长输管道带弯管下沟技术研究
Study on Lowering Long-distance Pipeline with Bent Pipes into Trench
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- DOI:
- 作者:
- 郑明高
ZHENG Ming-gao
- 作者单位:
- 中国石化集团江汉石油管理局油田建设工程公司, 湖北潜江 433123
Oilfield Construction Engineering Co.of Jianghan Petroleum Administration,SINOPEC,Qianjiang 433123,China
- 关键词:
- 长输管道;沟上组焊;弯管下沟;施工
long-tlistance pipeline;assembly welding outside trench;lowering pipeline with bent pipes into trench;construction
- 摘要:
- 巴西GASCAV天然气管道工程,由于地形起伏,管道的弯管用量大,施工采用沟上组焊带弯管下沟方式,因此根据地形确定管沟弯点、进行管沟开挖和管道下沟难度大。文章对弯管下沟的几种工况(水平弯、纵向弯和迭加弯)进行了理论分析,提出了通过调整弯点位置、适当加大开挖量、控制施工工序等措施来解决工程难题,并成功地实施。
In Brazil GASCAV Natural Gas Pipeline Project, a number of bent pipes are needed because ofbig terrain undulation. The construction method is as follows: assembly welding of pipeline with bent pipe iscarried out on ground，then the pipeline is lowered into trench, which brings difficulties in determining bentpoint of the trench, trenching and lowering pipeline into trench. The theoretical analyses on operation ways oflowering pipelines with horizontal bend, longitudinal bend or superposed bend are performed. Some measuressuch as adjusting bent point position, rationally increasing excavation volume and controlling construction pro-cedure are provided and the problems are solved successfully.2010,2(2): 100-102 收稿日期：2009-10-26分类号：TE973作者简介：郑明高(1971-),男，湖北汉川人，高级工程师，1994年毕业于西安石油学院焊接专业，现从事油田地面建设技术管理工作.