|本期目录/Table of Contents|

[1]耿志远,李新宏,陈国明,等.近海埋地管道泄漏气体扩散安全评估研究[J].中国安全生产科学技术,2020,16(3):12-17.[doi:10.11731/j.issn.1673-193x.2020.03.002]
　GENG Zhiyuan,LI Xinhong,CHEN Guoming,et al.Study on safety assessment of leaking gas dispersion from offshore buried pipeline[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(3):12-17.[doi:10.11731/j.issn.1673-193x.2020.03.002]
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近海埋地管道泄漏气体扩散安全评估研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年3期
页码:
12-17
栏目:
学术论著
出版日期:
2020-03-30

文章信息/Info

Title:
Study on safety assessment of leaking gas dispersion from offshore buried pipeline
文章编号:
1673-193X(2020)-03-0012-06
作者:
耿志远; 李新宏; 陈国明; 秦昊平; 王鹏飞
(1.中国石油大学（华东） 海洋油气装备与安全技术研究中心,山东 青岛 266580;
2.西安建筑科技大学 资源工程学院,陕西 西安 710055)
Author(s):
GENG Zhiyuan;  LI Xinhong;  CHEN Guoming;  QIN Haoping;  WANG Pengfei
(1.Centre for Offshore Engineering and Safety Technology,China University of Petroleum (East China),Qingdao Shandong 266580,China;
2.School of Resource Engineering,Xi’an University of Architecture and Technology,Xi’an Shaanxi 710055,China)
关键词:
近海埋地管道; 泄漏; 羽流; 数值仿真; 安全评估
Keywords:
offshore buried pipeline;  leakage;  plume;  numerical simulation;  safety assessment
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2020.03.002
文献标志码:
A
摘要:
为评估近海埋地管道泄漏气体扩散风险，基于流体体积与多孔介质方法，建立水下埋地管道泄漏气体扩散预测模型，模拟气体在海底土壤及海水中的运移扩散过程。研究结果表明：泄漏气体在海底土壤中扩散时间较短，扩散直径变化经历快速增长期、缓慢增长期和平稳期3个阶段，海水中羽流直径与羽流高度均随时间增加，且相比羽流高度，羽流直径的增长速度呈现先大后小的态势；增加泄漏孔径与泄漏压力，气体在海底土壤中扩散直径增大，海水中气泡体积明显增加，上浮时间减少，水平偏移量和海面处羽流直径减小。该模型可实现对近海埋地管道气体泄漏的准确预测，得出扩散轨迹等关键羽流数据，为后续的安全评估提供数据支撑和理论支持。
Abstract:
In order to assess the risk of leaking gas dispersion from the offshore buried pipelines,a prediction model of leaking gas dispersion from the underwater buried pipeline was established based on the fluid volume and porous media methods,then the migration and dispersion process of gas in the subsea soil and seawater were simulated.The results showed that the dispersion time of leaking gas in the subsea soil was very short,and the change of dispersion diameter went through three stages: rapid growth stage,slow growth stage and stable stage.Both the plume diameter and plume height in the seawater increased with time,and compared with the plume height,the growth rate of plume diameter presented the trend of large first and then small.With the increase of leakage hole diameter and pressure,the dispersion diameter of gas in the subsea soil and the bubble volume in the seawater increased significantly,the floating time decreased,while the horizontal offset and plume diameter on the sea surface decreased.This model can accurately predict the gas leakage from the offshore buried pipelines and obtain the critical plume parameters such as the dispersion trajectories,which can provide data and theoretical support for the subsequent safety assessment.

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备注/Memo

备注/Memo:
收稿日期： 2019-04-10；网络首发日期： 2020-03-23
http://kns.cnki.net/kcms/detail/11.5335.TB.20200320.1726.002.html
* 基金项目： 国家重点研发计划项目(2016YFC0802305)
作者简介： 耿志远，硕士研究生，主要研究方向为海洋油气安全技术。
通信作者： 陈国明，博士，教授，主要研究方向为海洋油气工程及装备、油气安全工程。
更新日期/Last Update: 2020-04-01