A fluid mechanics approach to evaluating marine soft clay strength by a ball full-flow penetrometer

Guo, Xingsen; Nian, Tingkai; Gu, Zhongde

doi:10.1016/j.apor.2021.102865

Cited by 17 publications

(2 citation statements)

References 40 publications

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“…The first ocean free-fall DPT penetrometer was (2022a) developed a comprehensive seabed soil testing system equipped with full-flow penetrometers (i.e., ball and streamline probes), CPT, and VST probes. This system was used to evaluate the mechanical properties of sediments in the South China Sea (Guo et al 2021a(Guo et al , b, 2023aGu et al 2022).…”

Section: Geotechnical Exploration Techniquesmentioning

confidence: 99%

Deep seabed mining: Frontiers in engineering geology and environment

Guo

Fan

Liu

et al. 2023

Int J Coal Sci Technol

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Ocean mining activities have been ongoing for nearly 70 years, making great contributions to industrialization. Given the increasing demand for energy, along with the restructuring of the energy supply catalyzed by efforts to achieve a low-carbon economy, deep seabed mining will play an important role in addressing energy- and resource-related problems in the future. However, deep seabed mining remains in the exploratory stage, with many challenges presented by the high-pressure, low-temperature, and complex geologic and hydrodynamic environments in deep-sea mining areas, which are inaccessible to human activities. Thus, considerable efforts are required to ensure sustainable, economic, reliable, and safe deep seabed mining. This study reviews the latest advances in marine engineering geology and the environment related to deep-sea mining activities, presents a bibliometric analysis of the development of ocean mineral resources since the 1950s, summarizes the development, theory, and issues related to techniques for the three stages of ocean mining (i.e., exploration, extraction, and closure), and discusses the engineering geology environment, geological disasters, in-situ monitoring techniques, environmental protection requirements, and environmental effects in detail. Finally, this paper gives some key conclusions and future perspectives to provide insights for subsequent studies and commercial mining operations.

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Section: Geotechnical Exploration Techniquesmentioning

confidence: 99%

Deep seabed mining: Frontiers in engineering geology and environment

Guo

Fan

Liu

et al. 2023

Int J Coal Sci Technol

Self Cite

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“…The full-flow penetrometers are now commonly used in offshore site investigations where the extremely soft soils encountered necessitate an increased measurement resolution and accuracy, and the flow mechanism of soil around the probe can be modeled as plane strain and axisymmetric in the case of the T-bar and ball, respectively. This is suitable for the structures supported on these deposits, including anchors and caissons for offshore oil platforms; nearshore piers, wind turbines, and liquid natural gas platforms; and piles in soft sediments onshore [26][27][28][29][30][31]. As a new in situ testing technology for testing marine soft soil, the T-bar penetrometer has the advantages of high accuracy, good reliability, a large amount of data collection, a convenient testing process, and low cost.…”

Section: Introductionmentioning

confidence: 99%

The Practice and Development of T-Bar Penetrometer Tests in Offshore Engineering Investigation: A Comprehensive Review

Qiao

Liu

et al. 2023

JMSE

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In recent years, the development of marine hydrocarbon resources has led to an increased demand for research on the marine soil bearing capacity and cyclic loading effect in marine engineering design. Because of the difficulties and high costs involved in obtaining high-quality soil samples from offshore sites, in situ testing techniques have become the preferred method of determining design parameters in offshore geotechnical engineering projects. This paper provides a review of the current state of marine penetrometer deployment technology used in offshore engineering investigations and presents a summary of the T-bar penetrometer test for measuring marine soft clay. The existing literature research on penetration mechanisms, numerical simulations, laboratory experiments, and field tests of the T-bar penetrometer in the field of marine geotechnical engineering are analyzed. Finally, the potential difficulties, challenges, and prospects of the T-bar penetrometer tests are discussed.

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