| 基于SPH深度积分模型的海底滑坡数值分析 |
| |
| 引用本文： | 王忠涛,李新仲,刘鹏,陶言祺.基于SPH深度积分模型的海底滑坡数值分析[J].海洋学报(英文版),2016,35(5):134-140. |
| |
| 作者姓名： | 王忠涛 李新仲 刘鹏 陶言祺 |
| |
| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室, 大连, 116023,中海油研究总院, 北京, 100081,大连理工大学海岸和近海工程国家重点实验室, 大连, 116023,大连理工大学海岸和近海工程国家重点实验室, 大连, 116023 |
| |
| 基金项目： | The Specialized Research Fund for the Doctoral Program of Higher Education under contract No. 20120041130002; the National Key Project of Science and Technology under contract No. 2011ZX 05056-001-02; the Fundamental Research Funds for the Central Universities under contract No. DUT14ZD220. |
| |
| 摘 要： | 海底滑坡会对海洋工程结构物造成严重破坏。滑移速度和距离是量化和分析海底滑坡的两个重要参数。目前BING等计算方法在模拟水下土体流动方面存在局限性,因此通过建立考虑土体固结和侵蚀效应的控制方程,选用摩擦流变模型,采用SPH深度积分算法,对海底滑坡进行了模拟研究。对比不同水深、坡度、接触摩擦系数和侵蚀率条件下的滑移体的速度、高度、长度的时程曲线,整理了最大滑移距离和速度,讨论变化规律。研究成果可为海底滑坡灾害预警和海底管线路由选址提供技术参考。
|
| 关 键 词： | 滑移速度 滑移距离 SPH深度积分法 摩擦流变模型 侵蚀效应 |
| 收稿时间： | 2015/4/29 0:00:00 |
| 修稿时间： | 2015/8/14 0:00:00 |
Numerical analysis of submarine landslides using a smoothed particle hydrodynamics depth integral model |
| |
| WANG Zhongtao,LI Xinzhong,LIU Peng and TAO Yanqi.Numerical analysis of submarine landslides using a smoothed particle hydrodynamics depth integral model[J].Acta Oceanologica Sinica,2016,35(5):134-140. |
| |
| Authors: | WANG Zhongtao LI Xinzhong LIU Peng and TAO Yanqi |
| |
| Institution: | 1.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China2.General Research Institute of China National Offshore Oil Corporation, Beijing 100010, China |
| |
| Abstract: | Submarine landslides can cause severe damage to marine engineering structures. Their sliding velocity and runout distance are two major parameters for quantifying and analyzing the risk of submarine landslides. Currently, commercial calculation programs such as BING have limitations in simulating underwater soil movements. All of these processes can be consistently simulated through a smoothed particle hydrodynamics (SPH) depth integrated model. The basis of the model is a control equation that was developed to take into account the effects of soil consolidation and erosion. In this work, the frictional rheological mode has been used to perform a simulation study of submarine landslides. Time-history curves of the sliding body''s velocity, height, and length under various conditions of water depth, slope gradient, contact friction coefficient, and erosion rate are compared; the maximum sliding distance and velocity are calculated; and patterns of variation are discussed. The findings of this study can provide a reference for disaster warnings and pipeline route selection. |
| |
| Keywords: | sliding velocity runout distance smoothed particle hydrodynamics depth integral method frictional rheological model erosion effect |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
