Skip to main content

ORIGINAL RESEARCH article

Front. Mar. Sci.
Sec. Marine Biogeochemistry
Volume 11 - 2024 | doi: 10.3389/fmars.2024.1377405
This article is part of the Research Topic Broadband Seafloor Sediment Acoustic Property and Multi-Parameter Geoacoustic Model View all 10 articles

Development and Application of a 3000-meter Seabed Cone Penetration Test and Sampling System Based on Hydraulic Drive

Provisionally accepted
Cheng Wang Cheng Wang 1Lei Guo Lei Guo 1*Lei Jia Lei Jia 1Wenxu Sun Wenxu Sun 1Gang Xue Gang Xue 1Xiuqing Yang Xiuqing Yang 2Xiaolei Liu Xiaolei Liu 2
  • 1 Shandong University, Jinan, China
  • 2 Ocean University of China, Qingdao, Shandong Province, China

The final, formatted version of the article will be published soon.

    The seabed surface is an important boundary for ocean exploration and foundation for ocean engineering construction. Accurate acquisition of seabed sediment mechanical properties and environmental parameters is critical to the development of marine resources and marine engineering. In this study, by designing the Seabed Cone Penetration Test (CPT) and Sampling System, multiparameter in situ testing and low-disturbance sampling of 3000 m deep-sea seabed sediments are performed. Accounting for the stable penetration speed of the probe rod is the basis for ensuring the accuracy of the static penetration test results. The system adopts electrohydraulic proportional position control and a fuzzy PID controller to precisely control the position of the piston of the hydraulic circuit, which can improve the accuracy of the cone test data and reduce the interference of the sampling tube with the original sediment during the sampling process. Moreover, electrohydraulic co-simulation of the hydraulic control system was conducted with AMESim and Simulink software, and the position control and speed control effects of the system were verified. The entire system was tested on site in the Shenhu Sea area of the South China Sea. This test successfully obtained 9 in situ parameters, including physical and chemical parameters, for sediments within a depth range of 2.66 m on the seabed surface at a depth of 1820 m. This system accurately and efficiently reflects the property characteristics of seafloor sediments in an in situ environment and can be widely used in marine engineering geological investigations.

    Keywords: seabed cone penetration test, multiparameter measurement, Sediment sampling, seabed penetration platform, speed control, field application

    Received: 27 Jan 2024; Accepted: 13 Aug 2024.

    Copyright: © 2024 Wang, Guo, Jia, Sun, Xue, Yang and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Lei Guo, Shandong University, Jinan, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.