斜向波作用下斜坡海床上管线三维冲刷不均衡性研究

程永舟; 鲁显赫; 李小超; 易蕾; 胡有川

doi:10.3969/j.issn.0253-4193.2016.07.012

斜向波作用下斜坡海床上管线三维冲刷不均衡性研究

doi: 10.3969/j.issn.0253-4193.2016.07.012

1.
长沙理工大学水利工程学院, 湖南长沙 410004;水沙科学与水灾害防治湖南省重点实验室, 湖南长沙 410004
2.
长沙理工大学水利工程学院, 湖南长沙 410004

基金项目: 国家自然科学基金资助项目(41176072,51309038);湖南省自然科学基金项目(2015JJ2006)。

计量
- 文章访问数: 926
- HTML全文浏览量: 11
- PDF下载量: 605
- 被引次数: 0
出版历程
- 收稿日期: 2015-12-07

The malconformation research of 3D scour below submarine pipelines under the oblique waves

1.
School of Hydraulic Engineering, Changsha University of Science&Technology, Changsha 410004, China;Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410004, China
2.
School of Hydraulic Engineering, Changsha University of Science&Technology, Changsha 410004, China

摘要

摘要:
由于海床起伏不平,斜坡的存在必然改变波浪对管线及海床的作用特性,进而影响管线三维冲刷。基于波浪港池实验,考虑规则波的作用,采用中值粒径为0.22 mm的原型沙铺设与波浪传播方向成45°夹角的斜坡,研究斜向波作用下斜坡上海底管线的三维冲刷特性。通过测量管线下方冲刷坑宽度和深度的差异,分析管线三维冲刷的不均衡性。实验表明:管线的存在使斜坡上的波高有所降低;斜向波作用下管线三维冲刷的不均衡性表现为深度不均衡性和宽度不均衡性,宽度不均衡性主要是管后淤积泥沙的后移引起的,周期对三维冲刷不均衡性的影响比波高对其的影响程度大;管线自深海向近岸延展时,随水深的减小,冲刷深度分为缓慢发展阶段和快速发展阶段。
- 海底管线 /
- 冲刷 /
- 斜坡海床 /
- 斜向波
Abstract:
Due to the seabed undulating, the slope changed the action properties of wave on pipeline and seabed necessarily and then will affect three-dimensional scouring below pipelines. For the experimental research of the three-dimensional scouring characteristics of submarine pipeline, a median particle size of 0.22 mm and the 45° angle of the slope are used by considering the effect of the oblique wave, which is based on the experimental results of the wave basins. The malconformation of pipelines three-dimensional scour is analyzed by measuring the width and depth of the scour hole in the pipeline. The experimental results show that the existence of pipeline makes the wave height on the slope to reduce; under the action of slope, the malconformation of the three-dimensional scouring characteristics of submarine pipelines is assumed by the malconformation of the depth and width, and the malconformation of the width is responsible for the sediment behind the pipeline is moved backwards. The influence of the malconformation of three-dimensional scour of the cycle is higher than the wave height. With the decrease of the water depth, scour depth is divided into slow development stage and rapid development phase when the pipelines extend from the deep sea to the seacoast.
- submarine pipeline /
- scour /
- slope seabed /
- oblique wave

HTML全文

参考文献(19)

Mao Y.The interaction between a pipeline and an erodible bed[D]. Copenhagen:Technical University of Denmark,1987.

Chiew Y M. Mechanics of local scour around submarine pipelines[J]. Journal of Hydraulic Engineering,1990,116(4): 515-529.

臧志鹏,滕斌,程亮,等.水流作用下海底管线三维冲刷扩展速度试验研究[J].大连理工大学学报,2009,49(1):110-114. Zang Zhipeng ,Teng Bin, Cheng Liang, et al. Experimental research on propagation velocity of 3-D scour of pipelines on sea floor under action of currents[J]. Journal of Dalian University of Technology,2009,49(1):110-114.

Wu Yushi, Chiew Y M.Three-dimensional scour at submarine pipelines[J].Journal of Hydraulic Engineering, 2012,138(9):788-795.

Wu Yushi, Chiew Y M. Mechanics of Three-Dimensional Pipeline Scour in Unidirectional Steady Current[J]. Journal of Pipeline Systems Engineering & Practice, 2013, 4(1):3-10.

浦群,李坤.管线振荡绕流对砂床的冲蚀[J].力学学报,1999, 31(6): 676-681. Pu Qun, Li Kun. Scour of the sand bed below the pipeline in oscillating flow[J]. Acta Mechanic Sinica, 1999, 31(6): 676-681.

Sumer B M, Fredsøe J. Scour blow pipelines in waves[J]. Journal of Waterway, Port, Coastal, and Ocean Engineering, 1990, 116(3): 307-323.

Sumer B M, Fredsøe J. Onset of scour below a pipeline exposed to waves[J]. International Journal of Offshore and Polar Engineering, 1991,Ⅰ(3):189-194.

潘冬子,王立忠,潘存鸿,等.推进波作用下海底管线周围局部冲刷试验研究[J].海洋工程,2007,25(4):27-32. Pan Dongzi, Wang Lizhong, Pan Cunhong, et al. Local scour around pipeline due to progressive wave[J]. The Ocean Engineering, 2007, 25(4): 27-32.

夏令. 波浪作用下的泥沙起动及海底管线周围局部冲刷[D]. 杭州: 浙江大学, 2006. Xia Ling. Sediment threshold and local scour around submarine pipelines under wave action[D]. Hangzhou: Zhejiang University, 2006.

Esin C E, Yalc Y K. Scour under submarine pipelines in waves in shoaling conditions[J]. Journal of Waterway, Port, Coastal and Ocean Engineering,1999,125(1):9-19.

Myrhaug D, Muk Chen Ong, Cecilie Gjengedal. Scour below marine pipelines in shoaling conditions for random waves[J]. Coastal Engineering, 2008,55(12):1219-1223.

程永舟,杨桥梁,黄筱云,等.斜坡海床上管道位置对其周围冲刷影响试验[J].长沙理工大学学报,2015,12(1):55-62. Cheng Yongzhou, Yang Qiaoliang, Huang Xiaoyun,et al. Experimental study on scour around submarine pipelines which placed at different positions of a sloped seabed[J]. Journal of Changsha University of Science and Technology,2015,12(1): 55-62.

Cheng L,Yeow K,Zang Z P, et al. 3D scour below pipelines under wave and combined wave and currents[J].Coastal Engineering, 2014, 83:137-149.

刘盈溢,吕林,郑苗子,等. 波流作用下海床稳定性和海底管道局部冲刷分析[J].浙江大学学报,2012,46(6):1135-1142. Liu Yingyi, Lv Lin, Zheng Miaozi, et al. Analysis of seabed stability and local scour around submarine pipelines under waves and current[J].Journal of Zhejiang University,2012,46(6):1135-1142.

郭荣,童思陈,张曼,等.基于声学多普勒流速仪的地形测量试验[J].水利水电科技进展,2010,32(增刊2):52-54. Guo Rong, Tong Sichen, Zhang Man, et al.Topography measurement test based on the acoustic doppler velocimeter[J]. Advances in Science and Technology of Water Resources,2010,32(S2):52-54.

陈子燊,李志龙,冯砚青,等. 近岸带波高与周期分布的核密度估计[J].海洋与湖沼,2007,38(2):97-103. Chen Zishen, Li Zhilong, Feng Yanqing, et al. Kernel density estimates on distribution of wave height and period in neareshore zone[J]. Oceanologia et Limnologia Sinica,2007,38(2):97-103.

邹志利. 海岸动力学[M]. 北京:人民交通出版社,2009. Zou Zhili. Coastal Dynamics[M]. Beijing:China Communications Press,2009.

秦崇仁, 彭亚. 波浪作用下海底裸置管道周围的冲刷[J]. 港工技术,1995(3):7-12. Qin Chongren, Peng Ya. Washing around the seabed pipeline placed barely by wave action[J]. Port Engineering Technology, 1995(3):7-12.

施引文献

资源附件(0)

访问统计