Theoretical design and dynamic simulation of new mining paths of tracked miner on deep seafloor

Dai, Yu; Liu, Shaojun

doi:10.1007/s11771-013-1566-z

Cited by 17 publications

(7 citation statements)

References 6 publications

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“…Li and Zhong built a virtual prototype of an ocean mining machine and performed simulations to examine the machine's mobility and manoeuvrability [3]. Dai and Liu built a seabed tracked mining machine to be a single-rigid-body model integrating a track-soil discretized interaction mechanical model [4]. Dai et al established a novel multi-rigid-body model of a seabed mining machine that integrated a terramechanical model of seabed particular soil; their simulations demonstrated the machine has favourable mobility performance on the seabed [5].…”

Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Dai¹,

Chen²,

Zhu³

2016

Int. j. simul. model.

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In this research, the mechanical characteristic parameters of the seabed massive sulfide (SMS) are obtained quantitatively using laboratory uniaxial compression strength (UCS) test and triaxial compression strength (TCS) test. A three-dimensional discrete element (DEM) model of the SMS is developed in the EDEM simulation environment and are then validated by numerically simulating the laboratory UCS and indirect tensile strength (Brazilian disc) tests. A new counter-rotating pick-type drum cutter for excavating the SMS is proposed, and a corresponding DEM model for the excavation process is established. Numerical simulations for the new counter-rotating cutter and a traditional single-rotating cutter are conducted, and the cutter forces in three orthogonal directions and the torques are obtained and compared. By integrating the new counter-rotating cutter, a three-dimensional multi-rigid-body dynamic model of a SMS mining machine is developed in the RecurDyn simulation environment, and simulations are conducted to evaluate its trafficability and mobility performance under the effect of the excavating cutter on the seabed complex terrain. This research can provide valuable and effective modelling methods for seabed mineral excavation process simulation, mining tool optimization and design and mining machine performance evaluation.

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Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Dai¹,

Chen²,

Zhu³

2016

Int. j. simul. model.

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“…Seabed sediments at polymetallic nodule sites have high fluidization, poor shear resistance, large porosity, and high water content with obvious stratification (Song 1999;Gillard et al 2019). Under these conditions, seafloor sediments may subside when subjected to gravitational loads from mining vehicles (Grupe et al 2001;Dai 2010). In addition, the travel of mining vehicles and dragging of the ground-touching part of the conveying hose can compact the sediments at the rut, and the sediments on both sides are turned over before redeposition (Miller et al 2018).…”

Section: Geologic Disasters At Deep Seabed Mining Sitesmentioning

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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“…Through ocean in-situ surveys and laboratory stimulant experiments, detailed mechanics parameters of sediment are obtained and used in the simulation [19,20]. The hydrodynamic force acting on miner is composed of drag and inertial forces linearly added: …”

Section: Application To Dynamic Modeling Seafloor Tracked Minermentioning

confidence: 99%

Three-dimensional coupled dynamic analysis of deep ocean mining system

Dai

Zhang

et al. 2016

Teh. vjesn.

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Original scientific paper A new three-dimensional coupled dynamic model of the deep ocean mining system is developed. The seafloor tracked miner is built as a 3D single-body vehicle model with mesh element track-terrain interaction mechanics model, which not only can realize the fast dynamic simulation in contrast to traditional 3D multi-body model, but also can allow the loading of the seafloor sediment special terramechanics model. The mining pipeline is built as a 3D multi-body discrete element model that is divided into rigid elements linked by flexible connectors, also can realize the fast dynamic simulation for such long pipeline. New integrated mining operation modes for the total system are proposed and simulated, which show that during the whole operation processes, the synchronized stable motion of the total system can be kept well. The dynamic simulation analysis in the paper can provide important theoretical basis and technical reference for structure design, performance evaluation and operation control of the practical deep ocean mining system. Keywords: deep ocean mining system; dynamic simulation; mesh element mechanics model; multi-body discrete element model; 3D coupled dynamic modelTrodimenzionalno spregnuta dinamička analiza sustava iskapanja u dubokom oceanu Izvorni znanstveni članak Razvijen je novi trodimenzionalno spregnuti dinamički model sustava za rudarenje u dubokom oceanu. Kopač koji se vuče po dnu napravljen je kao 3D model kompaktnog vozila s mehaničkim modelom gusjeničara s elementima u zahvatu, s kojim ne samo da se može ostvariti brza dinamička simulacija nasuprot tradicionalnom 3D modelu sastavljenom od više dijelova, već se može također omogućiti nošenje specijalnog terramehaničkog modela za talog s morskog dna. Cjevovod za kopanje izrađen je kao 3D model diskretnih elemenata s više dijelova koji je podijeljen u krute elemente povezane fleksibilnim konektorima, i može također ostvariti brzu dinamičku simulaciju za tako dugačak cjevovod. Predloženi su i simulirani novi integrirani načini iskapanja za čitav sustav koji pokazuju da se kroz cijeli postupak može dobro održati stabilno sinhronizirano djelovanje čitavog sustava. Dinamička simulacijska analiza data u radu može pružiti važnu teoretsku bazu i tehničku referencu za dizajn konstrukcije, ocjenu djelovanja i kontrolu rada praktičnog sustava iskapanja u dubokom oceanu.

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Theoretical design and dynamic simulation of new mining paths of tracked miner on deep seafloor

Cited by 17 publications

References 6 publications

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Modelling and Simulation of a Mining Machine Excavating Seabed Massive Sulfide Deposits

Deep seabed mining: Frontiers in engineering geology and environment

Three-dimensional coupled dynamic analysis of deep ocean mining system

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