Since 1970s, many research groups from the United States, Canada, China, France, Germany, Russia, Japan and India have studied the core technology of deep sea mining 5, 6.
In order to extract these minerals from the deep sea bed, there are usually three methods, namely, seabed mechanical transportation, air lift system with ejector and hydraulic lift system with pump station 4. Marine solid mineral resources, such as the most common iron-manganese nodules, are usually found in the 4000–7000 m deep sea 3. At present, the proven potential deep-sea mineral resources include polymetallic nodules, cobalt-rich crusts, and polymetallic sulfides, among which deep-sea manganese nodules and cobalt-rich iron-manganese crusts are abundant 2. The research results of this paper are of great significance to the safety design of deep-sea mining lifting system and the planning of deep-sea operation activities.ĭeep sea contains a lot of resources, which can meet the needs of mankind for a long time in the future 1. The coupling simulation results show that the coupling effect has a significant effect on the time domain dynamic response of the lifting pipe, but has little effect on the average effective tension and longitudinal amplitude along the pipe length. There is a very good agreement in RAO between the experiments and simulations. The response amplitude operator (RAO) is used to compare the measured and simulations dynamic response of the mining vessel. Therefore, this paper uses time-domain coupled numerical model as the research object, considering ocean current, surface wave, pipe dynamics and vessel-pipe contact mechanics, to study the dynamic behavior of the lifting pipe and mining vessel during the process of deep-sea mining using AQWA and OrcaFlex softwares. The characteristics of coupled motion model have not been fully considered in the existing research. The Executive Secretary is the head of the Secretariat.In deep-sea mining, the coupling dynamic response between the mining vessel and the lifting pipe is a significant problem, which directly affects the structural design of the lifting system and the safety of field operation. Its main function is to assist governments in the implementation of the CBD and its programmes of work, to organize meetings, draft documents, and coordinate with other international organizations and collect and spread information.
The Secretariat of the Convention on Biological Diversity (SCBD) is based in Montreal, Canada. This ultimate authority of all governments (or Parties) that have ratified the treaty meets every two years to review progress, set priorities and commit to work plans. The CBD’s governing body is the Conference of the Parties (COP). In fact, it covers all possible domains that are directly or indirectly related to biodiversity and its role in development, ranging from science, politics and education to agriculture, business, culture and much more. It also covers biotechnology, including through the Cartagena Protocol on Biosafety. The Convention on Biological Diversity covers biodiversity at all levels: ecosystems, species and genetic resources. The conservation of biodiversity is a common concern of humankind. Its overall objective is to encourage actions, which will lead to a sustainable future. The Convention on Biological Diversity (CBD) is the international legal instrument for "the conservation of biological diversity, the sustainable use of its components and the fair and equitable sharing of the benefits arising out of the utilization of genetic resources" that has been ratified by 196 nations. Convention on Biological Diversity, key international instrument for sustainable development
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