... ABSTRACT An experimental study is conducted within a large-scale simulated deep-sea mining transport system and spiral flow generation system to shed some light on the multiphase FIV and the correlation with the dynamic behavior of the riser caused by the spiral flow. Experimental results show...

... completion installation and operations nodule well intervention rigid riser slurry riser proceedings mining concentration inertia diameter simulation production enhancement spike requirement downhole intervention efficiency calculation thirty-fourth pipe international ocean...

... mathematics of computing modeling & simulation mining mineral pipe geology sulfide engineering particle zhao numerical simulation diagram geologist characteristic equation journal zhang international ocean deep-sea mining vehicle overset mesh consumption ABSTRACT...

... the carbon reserves of conventional fossil energy in the world (Zhu et al., 2020). Because of its wide distribution, low pollution, and high combustion efficiency, hydrate has been widely considered an ideal alternative energy source in the future. At present, natural gas hydrate mining methods mainly...

... of bentonite to water, C/W , whereas they are independent of the mass ratio of sand particles to water, S / W . INTRODUCTION In deep sea mining, it is necessary to transport mineral resources (e.g., polymetallic massive sulfide deposits and/or manganese nodules) from seafloor to sea surface over 1000 m...

... ABSTRACT Numerical study of the free-fall of a single sphere at different Reynolds numbers has been conducted with Computational Fluid Dynamics(CFD) method based on the engineering concerns of the dynamics of ore particles in vertical pipes in deep sea mining. A combination of Detached Eddy...

... ABSTRACT Article presents the methodology for operational research on the polymetallic nodules mining value chain and the assessment of crucial factors influencing its feasibility. Value chain has been analyzed and boundary assumptions having a substantial influence on the decision making...

... Abstract Growing interest in deep water minerals resources is providing opportunities for both the mining and oil industries. Exploration and production of ocean minerals require synergies between different technologies. In this context appropriate standards are needed to cover both new...

... have already identified promising sites in the deep-sea regions for manganese nodule mining (ISA, 1998), and appropriate mining technologies have been developed during the last thirty years by the international consortium and several nations (Welling, 1981; Kaufman et al., 1985; Bath, 1989; Charles et...

... ABSTRACT The technological, ecological and technical-economical principles of the continental shelf deposit mining of solid mineral resources and also the main parameters of the project of marine dressing complexes are given in this paper. The advisability of implementation mining, dressing...

... ABSTRACT Environmental impact researches for manganese nodule mining have been progressive in many countries. The current status in the world is introduced. Fundamental understanding about deep-sea environment obtained by the Japan's research and results of the impact experiment...

... The paper critically reviews the presently available experimental data from various tests and experiments connected with the deepsea mining issue with regard to their feasibility in supporting and validating the developed numerical models. Numerical modelling is applied mainly to predetermining...

... are explained, the strict observance of the above principles is necessary in working out of new technologies, regulations, tcchrtical conditions and projects of sea mines. The principle propositions of the project of the marine dressing complex of module type and creation of specialized modules for extraction...

... disposal ocean solid waste management scientist engineer assessment impact experiment schriever sediment politician nodule mining experiment reaction deep sea metals & mining energy conservation mining environmental protection thiel radioactive waste environmental study...

... that is presented here, the mining of manganese nodules and the re- lated release of elements like Mn, Pb, Mo, and Cu into the water column are the focus of the study. Observations in the German mining claim in the eastern equatorial Pacific (EEP) show, that concentrations of these elements in the water samples...

... to Potential Impact of Deep-Sea Mining Huai- Yang Zhou Second Institute of Oceanography, State Oceanic Administration Hangzhou, China ABSTRACT It is known that China Ocean Mineral Resources R & D Association (COMRA), a "pioneer investor" registered by UN Seabed Authority in 1991 and a national organizer...

... ABSTRACT Some fields of the mines being in operation in the Far East do not border upon the shelf of the Okhotskoye, Japan and Beringovo seas. This fact forces the miners to leave much coal in productive pillars. The officials of the department of Mining Mineral Resources of the Far East...

... ABSTRACT: Although Intensive exploration and mining and processing tests have been made at the end of the seventies, no commercial development of deep seabed mining has been considered since then. Such development needs the metal prices to be secured for a long period, In order to reduce...

... ABSTRACT Comprehensive Oceanographic/Meteorological Data Collection and Assessment Programme, for a hypothetical Deep Ocean Mining Project in Central India Ocean is presented. Considering the present level of available data against required, it is appreciated that extensive sampling...

... ABSTRACT: Mining has been high on the Antarctic agenda for two decades. The Antarctic Treaty Nations have recently moved away from plans to regulate mining towards a legal prohibition. Over the same decades metal mines have been developed in the Arctic. As much as anything, the long term...