Continuous Bucket-Line Dredging at 12,000 Feet

Masuda, Yoshio; Cruickshank, Michael J.; Mero, John L.

doi:10.4043/1410-ms

Cited by 21 publications

(10 citation statements)

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“…The bucket is then dragged using cables for collection. The continuous line bucket mining system was improved for use in deep-sea mining (Masuda et al 1971). However, the system cannot adapt to the complex seabed topography, and the cables easily wind, resulting in low mining efficiency.…”

Section: Techniques For the Extraction Stagementioning

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: Techniques For the Extraction Stagementioning

confidence: 99%

Deep seabed mining: Frontiers in engineering geology and environment

Guo

Fan

Liu

et al. 2023

Int J Coal Sci Technol

View full text Add to dashboard Cite

show abstract

“…However, surveys and evaluations of the resources, as well as research into extraction methods, began in the 1950s due to commercial interest. In 1972, the Japanese conducted mining trials using a "continuous line bucket system" at a depth of 4500 m. These were discontinued due to unsolvable technical problems [3]. In 1979, the French proposed the concept of a "free-shuttle mining system"; however, research could not be continued because financial research deemed the costs to be too high [2].…”

Section: The Development History Of Deep-sea Polymetallic Nodule Mining Technologymentioning

confidence: 99%

The Development History and Latest Progress of Deep-Sea Polymetallic Nodule Mining Technology

Kang

Liu

2021

Minerals

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Deep-sea polymetallic nodules are a mineral resource with potential for commercial development. Due to the unique deep-sea environment in which they are found, specialized technology and equipment are required for their extraction. In this paper, firstly, the development of deep-sea polymetallic nodule mining technology is classified into three stages, and its characteristics are summarized. Moreover, the results from research into deep-sea polymetallic nodule mining technology are analyzed, including proposals for mining systems, research into key technologies, basic scientific problems, and proof of technical feasibility from sea tests. Secondly, the testing of the collector prototype and the environmental impact assessment study of Global Sea Mineral Resources NV, as well as the progress of the deep-sea polymetallic nodule mining test project in China, are introduced. On this basis, the opportunities and challenges brought by the fast-growing demand for electric vehicles to the development of deep-sea polymetallic mining technology is analyzed, and a possible technical scheme for a mining system and the trends in its development towards high reliability and high standards of environmental protection according to the requirements of commercial exploitation are explored. This provides a reference for the research and development of high-efficiency technology and equipment for the mining of deep-sea polymetallic nodules.

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“…1(a), which require a great deal of seabed operations during the mining stages. In the development of deep-sea mining methods, four main types of deep-sea mining systems have been developed (Leng et al, 2021), including the submarine drag bucket mining system, continuous line bucket mining system (Masuda et al, 1971), shuttle vessel mining system (Rajesh et al, 2011) and pipeline lift mining system (Sharma, 2017). The pipeline lift mining system is becoming the most potential system in practical applications (Wu, et al, 2020), which consists of a key underwater tracked vehicle (UTV) to execute tasks on the sea oor.…”

Section: Introductionmentioning

confidence: 99%

A new method for researching terramechanics problems of underwater tracked vehicles

Huang

2023

Preprint

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In the process of mining the seabed resources, underwater tracked vehicles (UTVs) penetrate and shear the seabed during walking. Traditionally, the bevameter technique is widely chosen to research the above processes. However, the bevameter technique does not reflect the track-soil interaction, which includes ignoring the grousers’ effect in the penetration process and the connection between these two processes. In order to better simulate the track-soil interaction, here, a new method is proposed based on the torsional penetrometer that can integrate the penetration process and the shearing process into a continuous simulation, while the grousers’ effect is reflected. Furthermore, the corresponding formulas of key driving indicators are derived. To verify the validity of the new method, a set of comparative tests were carried out. The results indicated that the peak pressure of the new method was 20% bigger than those of the traditional method due to the consideration of the grousers’ effect, the peak shear stress and residual stress of the new method were respectively 33% and 30% bigger due to the continuous simulation, all of which showed the new method’s reliability and applicability.

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Continuous Bucket-Line Dredging at 12,000 Feet

Cited by 21 publications

References 0 publications

Deep seabed mining: Frontiers in engineering geology and environment

Deep seabed mining: Frontiers in engineering geology and environment

The Development History and Latest Progress of Deep-Sea Polymetallic Nodule Mining Technology

A new method for researching terramechanics problems of underwater tracked vehicles

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