Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)

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Analysis of Submarine Trench Siltation in Offshore Open Sea

Authors
Xiaohua Wang1, Ping Zhu2, 3, *, Yonghui Jiang1
1CCCC SDC (Fujian) Communication Construction Engineering Co., Ltd., Xiamen, Fujian, 361028, China
2CCCC National Engineering Research Center of Dredging Technology and Equipment Co., Ltd., Shanghai, 200082, China
3Key Laboratory of Dredging Technology, CCCC, Shanghai, 200082, China
*Corresponding author. Email: zhuping@cccc-drc.com
Corresponding Author
Ping Zhu
Available Online 24 April 2024.
DOI
10.2991/978-94-6463-398-6_3How to use a DOI?
Keywords
submarine trench; current; siltation; computational fluid dynamics
Abstract

Based on the offshore submarine pipe project in Zhangpu, the siltation characteristics of submarine trench in the nearshore open sea were studied using computational fluid dynamics (CFD) methods. The results of the study show that the characteristics of water flow above the submarine trench will change significantly after the excavation of the submarine trench, which will have a significant impact on the siltation of the submarine trench. The excavation of the submarine trench will lead to an increase in the cross sectional area of the water flow over the submarine trench, causing the current velocity to be smaller than that of the neighboring waters, which leads to the siltation of the submarine trench. Under the same hydrodynamic condition, the smaller the water depth, the greater the intensity of submarine trench siltation. The results of this study can provide guidance for the process optimization of submarine trench excavation in offshore open sea.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
Series
Atlantis Highlights in Engineering
Publication Date
24 April 2024
ISBN
978-94-6463-398-6
ISSN
2589-4943
DOI
10.2991/978-94-6463-398-6_3How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Xiaohua Wang
AU  - Ping Zhu
AU  - Yonghui Jiang
PY  - 2024
DA  - 2024/04/24
TI  - Analysis of Submarine Trench Siltation in Offshore Open Sea
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 11
EP  - 18
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_3
DO  - 10.2991/978-94-6463-398-6_3
ID  - Wang2024
ER  -