Analysis and modelling on coring process of deep-sea gravity piston corer

The Journal of Engineering

Jingping Peng¹  Haoyu Wu¹  Bin Kong¹  Yunzheng Ge¹  Na Liu¹ 

[1] The First Institute of Oceanography, Ministry of Natural Resources;

关键词: oceanographic regions;    sedimentation;    pistons;    sediments;    friction;    deep-sea gravity piston corer;    deep-water gravity-piston corer;    penetration depth;    penetration velocity;    corer weight;    penetration process;    deep-sea gravity-piston corer;    coring process;    corer penetrating;   

DOI  :  10.1049/joe.2020.0077

来源: DOAJ

【 摘 要 】

Taken the deep-sea gravity-piston corer as the prototype, a model of the corer penetrating was built based on energy conservation and by analysing the coring process. The effects of influencing parameters of the deep-sea gravity-piston corer on the penetration process and coring length were analysed. In addition, a comparison between the calculated values and the real examples was performed. The results show that corer weight, sediment properties and penetration velocity affect the coring performance. The penetration depth significantly increases with an increase in corer weight, and the corer weight plays an important role in the process of the corer penetrating. Moreover, the penetration depth decreases with the friction coefficient of increasing sediment, while it gradually increases with an increase in penetration velocity. It is also revealed that the penetration depth decreases approximately linearly as the core barrel diameter. Consequently, these will provide the basic data for the design and optimisation of deep-water gravity-piston corer.

【 授权许可】

Unknown