Lateral instability and tunnel erosion of a submarine pipeline: competition mechanism
文献类型：会议论文
| 作者 | Shi YM(师玉敏) ; Gao FP(高福平)
|
| 出版日期 | 2018-08-01 |
| 会议日期 | OCT 21-24, 2016 |
| 会议地点 | Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, Qingdao, PEOPLES R CHINA |
| 关键词 | Submarine pipeline Pipeline-soil interaction system Lateral instability Tunnel erosion Competition mechanism |
| 页码 | 1069-10180 |
| 英文摘要 | 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. |
| 资助机构 | National Natural Science Foundation of China [11372319, 11232012]; Strategic Priority Research Program (Type-B) of CAS [XDB22030000] |
| 会议录 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 语种 | 英语 |
| WOS记录号 | WOS:000441525900016 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/78557]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.{Shi, Yu-min、Gao, Fu-ping} Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.{Shi, Yu-min、Gao, Fu-ping} 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[C]. 见:. Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, Qingdao, PEOPLES R CHINA. OCT 21-24, 2016. |
入库方式： OAI收割
来源：力学研究所
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