Numerical Simulation Study on The Degree of Submarine Cable Protection by Riprap Protection Layer Against Anchor

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Cheng, Zhiyuan^1 ; Zhang, Zhonggui^1 ; Nie, Qiong^1

School of Architecture and Materials Engineering, Hubei University of Education, Wuhan, China^1

关键词: Discrete element modeling;    Engineering practices;    Force and displacements;    Numerical simulation studies;    Partial penetration;    Penetration process;    Protective effects;    Restructuring process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022127/pdf
DOI  :  10.1088/1755-1315/300/2/022127

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on the discrete element theory, the rockfill-anchor-cable discrete element model was built on the PFC3D simulation platform. Combined with the engineering practice, numerical simulation of the penetration process of anchor into the submarine cable riprap protection layer was carried out, the relationship between force and displacement and the sidewall pressure of the submarine cable under the anchor partial penetration were obtained, and the anti-anchor damage ability of the submarine cable was evaluated quantitatively. The results show that the resistance force of the riprap to the anchor increases gradually with the increase of anchor invasive displacement, and eventually stabilize, which reflects the forming, developing, rupturing and restructuring process of the physical chain of the ripped-rock. Furthermore, the riprap protection layer has a significant protective effect on the submarine cable.