A field investigation on the effects of background erosion on the free span development of a submarine pipeline

doi:10.1007/s11802-015-2458-7

	A field investigation on the effects of background erosion on the free span development of a submarine pipeline
	Wen Shipeng 1,3; Xu Jishang 1,2; Hu Guanghai 4; Dong Ping 1,5; Shen Hong 4
刊名	JOURNAL OF OCEAN UNIVERSITY OF CHINA
	2015-08
卷号	14 期号:4 页码:621-628
关键词	submarine pipeline scour span corrosion
ISSN号	1672-5182
DOI	10.1007/s11802-015-2458-7
英文摘要	The safety of submarine pipelines is largely influenced by free spans and corrosions. Previous studies on free spans caused by seabed scours are mainly based on the stable environment, where the background seabed scour is in equilibrium and the soil is homogeneous. To study the effects of background erosion on the free span development of subsea pipelines, a submarine pipeline located at the abandoned Yellow River subaqueous delta lobe was investigated with an integrated surveying system which included a Multibeam bathymetric system, a dual-frequency side-scan sonar, a high resolution sub-bottom profiler, and a Magnetic Flux Leakage (MFL) sensor. We found that seabed homogeneity has a great influence on the free span development of the pipeline. More specifically, for homogeneous background scours, the morphology of scour hole below the pipeline is quite similar to that without the background scour, whereas for inhomogeneous background scour, the nature of spanning is mainly dependent on the evolution of seabed morphology near the pipeline. Magnetic Flux Leakage (MFL) detection results also reveal the possible connection between long free spans and accelerated corrosion of the pipeline.
资助项目	Marine Specific Research for Public 'Forecast and appraisal for geologic hazard of inshore seafloor and study of key technology for protection'[201005005]
WOS关键词	YELLOW-RIVER DELTA ; SUBAQUEOUS DELTA ; SCOUR DEPTH ; WAVES ; SEDIMENTATION ; BURIAL ; LOBE ; BED
WOS研究方向	Oceanography
语种	英语
出版者	OCEAN UNIV CHINA
WOS记录号	WOS:000358335900005
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27391]
专题	自然资源部第一海洋研究所
通讯作者	Xu Jishang
作者单位	1.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 2.Ocean Univ China, Key Lab Submarine Sci & Prospecting Tech, MOE, Qingdao 266100, Peoples R China 3.Shengli Oilfield Subsidiary Co, Offshore Oil Prod Factory, Dongying 257237, Peoples R China 4.First Inst Oceanog, Qingdao 266100, Peoples R China 5.Univ Dundee, Div Civil Engn, Sch Engn, Dundee DD1 4HN, Scotland
推荐引用方式 GB/T 7714	Wen Shipeng,Xu Jishang,Hu Guanghai,et al. A field investigation on the effects of background erosion on the free span development of a submarine pipeline[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2015,14(4):621-628.
APA	Wen Shipeng,Xu Jishang,Hu Guanghai,Dong Ping,&Shen Hong.(2015).A field investigation on the effects of background erosion on the free span development of a submarine pipeline.JOURNAL OF OCEAN UNIVERSITY OF CHINA,14(4),621-628.
MLA	Wen Shipeng,et al."A field investigation on the effects of background erosion on the free span development of a submarine pipeline".JOURNAL OF OCEAN UNIVERSITY OF CHINA 14.4(2015):621-628.