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Lateral instability and tunnel erosion of a submarine pipeline: competition mechanism
Shi YM(师玉敏)1,2; Gao FP(高福平)1,2
2018-08-01
发表期刊BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
卷号77期号:3页码:1069-1080
ISSN1435-9529
摘要

In submarine geological and hydrodynamic environments, either tunnel erosion or lateral instability could be initiated where there is a shallowly embedded pipeline. Unlike previous studies on the tunnel erosion of sand and the lateral instability of pipelines, in this study we performed correlation analyses on the competition mechanism for these two physical processes. By correlating the critical flow velocities of these two processes, the instability envelope for the pipe-soil interaction system is established, which can be described using three key parameters: the embedment-to-diameter ratio, the dimensionless submerged weight of the pipe, and the corresponding critical flow velocity. The analysis procedure is further proposed to first determine the instability mechanism and then the critical velocity of ocean currents. Our parametric study indicates that tunnel erosion is more prone to emerging than lateral instability with small embedment-to-diameter ratio values. With increasing pipeline embedment, tunnel erosion can be suppressed and lateral instability therefore occurs more frequently. Moreover, for light pipelines, lateral instability is more likely to be triggered than tunnel erosion.

关键词Submarine Pipeline Pipeline-soil Interaction System Lateral Instability Tunnel Erosion Competition Mechanism
DOI10.1007/s10064-017-1073-9
收录类别SCI ; EI
语种英语
WOS记录号WOS:000441525900016
关键词[WOS]On-bottom Pipeline ; Scour ; Resistance ; Stability ; Currents ; Onset ; Wave
WOS研究方向Engineering ; Geology
WOS类目Engineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
项目资助者National Natural Science Foundation of China(11372319 ; Strategic Priority Research Program (Type-B) of CAS(XDB22030000) ; 11232012)
论文分区二类
力学所作者排名1
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77649
专题流固耦合系统力学重点实验室
通讯作者Gao FP(高福平)
作者单位1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Shi YM,Gao FP. Lateral instability and tunnel erosion of a submarine pipeline: competition mechanism[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2018,77(3):1069-1080.
APA Shi YM,&Gao FP.(2018).Lateral instability and tunnel erosion of a submarine pipeline: competition mechanism.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,77(3),1069-1080.
MLA Shi YM,et al."Lateral instability and tunnel erosion of a submarine pipeline: competition mechanism".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 77.3(2018):1069-1080.
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