海底管道阻流板(Spoiler)自沉埋技术是一种新型管道自埋技术,为深入了解其作用机制及其效果,本文通过分析安装有阻流板的杭州湾海底管道历年检测资料,结合管道附近海域海床、潮流动力特性,深入探讨了阻流板装置在实际工程中的运行效果,分析了其作用机制及其适用条件。研究发现安装阻流板装置的杭州湾海底管道在往复潮流作用下逐渐埋入海床,其埋入段长度由2005年的50%增加到2013年的80%以上,而且平均埋入深度超过2.6 m,自埋效果较好;而在管道路由与海流平行段或管道敷设于抗冲刷强海床上时,阻流板作用不能有效发挥,管道仍然呈现裸露状态。
Abstract
Attaching a spoiler on the top of pipeline is a new method to enhance self-burial of pipeline. The pipeline state in Hangzhou Bay with spoiler was investigated in this study in order to understand the mechanism of spoiler. Based on the route survey data combined with the seabed and hydrodynamic characteristics, the effect of spoiler on self-burial of pipeline was discussed. The survey data illustrate that the percentage of buried pipeline increased from 50% in 2005 to over 80% in 2013, and the average buried depth increased to 2.60 m, which shows that this self-burial method is applicable in this region. While some sections of the pipeline where the flow direction is parallel to the route or on strong anti-erosion river bed are still exposed on the seabed due to the ineffectiveness of spoiler.
关键词
海底管道 /
阻流板 /
自埋 /
杭州湾
Key words
submarine pipeline /
spoiler /
self-burial /
Hangzhou Bay
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参考文献
[1] HULSBERGEN C H. Spoilers for stimulated self-burial of submarine pipelines[C]. Offshore Technology Conference, Houston:1986.
[2] LIU Guang-sheng, YANG Yuang-ping, WU Xiu-guang, et al. The scouring analysis of submarine pipeline used spoiler in strong tide Bay[J]. Journal of Marine Sciences,2016,34(2):53-59.
刘光生,杨元平,吴修广,等.强潮海湾Spoiler海底管道冲刷机理分析[J].海洋学研究,2016,34(2):53-59.
[3] CHEN Guo-xiang, LI Chun, TANG Hai-yan. Self-burial technique of submarine pipeline with spoiler[J]. Shipbuilding of China,2005,46(S1):365-372.
陈国祥,李春,唐海燕.采用阻流板的海底管道自埋技术[J].中国造船,2005,46(S1):365-372.
[4] CHIEW Y M. Effect of spoilers on scour at submarine pipelines[J]. Journal of Hydraulic Engineering,1992,118(9):1 311-1 317.
[5] CHIEW Y. M. Local scour around a submarine pipeline with a spoiler attachment[C]//Proceedings of the 3rd international offshore and polar engineering conference. Singapore,1993:82-87.
[6] ZHANG Zhi-yong, SHI Bing, FAN Fei-fei, et al. Numerical simulation and experimental study on flow around submarine pipeline with spoiler[J]. Chinese Journal of Hydrodynamics,2011,26(5):597-605.
张芝永,拾兵,范菲菲,等.导流板对海底管道绕流影响的数值模拟与试验研究[J].水动力学研究与进展A辑,2011,26(5):597-605.
[7] LAI Xiang-hua,YE Yin-can,WEI Yan-ji, et al. Preliminary study on the process of scouring and self burying of submarine pipeline in Hangzhouwan Bay[J]. Journal of Marine Sciences,2011,29(2):65-71.
来向华,叶银灿,韦雁机,等.杭州湾海底管道冲刷自埋演化过程初步研究[J].海洋学研究,2011,29(2):65-71.
基金
国家自然科学基金项目资助(41376099);浙江省科技厅公益性计划研究项目资助(2016C33095);浙江省科技厅条件建设项目资助(2014F10036)