Deep-sea poly-metallic nodule near-bottom dragging mining system and method

Abstract

The invention discloses a deep-sea poly-metallic nodule near-bottom dragging mining system and method. The deep-sea poly-metallic nodule near-bottom dragging mining system includes a surface support ship, an underwater near-bottom mining platform, and a seabed collection system; a tower crane on the surface support ship is equipped with a main ore lifting pipeline; the lower end of the main ore lifting pipeline is connected to the underwater near-bottom mining platform; the underwater near-bottom mining platform is connected to the seabed collection system through a dragging pipeline; the seabed collection system includes multiple sets of articulated hydraulic collection units; and the multiple sets of hydraulic collection units form a wide collection head. The deep-sea poly-metallic nodule near-bottom dragging mining method is as follows: the underwater near-bottom mining platform sends high-pressure water to the seabed collection system for high-pressure water jet collection of ore;and the underwater near-bottom mining platform sucks the ore back, and then sends the ore to the main ore lifting pipeline, so that the ore is lifted to the surface support ship on the surface of thesea. On the basis of solving the problem of insufficient power of the collection system and the adaptability of micro-terrain, the invention can greatly increase the width of the collection head and improve the mining efficiency.

Description

Technical field [0001] The invention relates to a system and a method, in particular to a system and method for dragging near-bottom deep-sea polymetallic nodules, and belongs to the field of deep-sea polymetallic nodules mining technology and equipment. Background technique [0002] The deep sea contains rich mineral resources, especially some rare metal resources on land. With the gradual depletion of land resources and the rapid development of marine technology, more and more countries have shifted the direction of resource development to the deep sea. Especially in recent years, some countries have accelerated the research and development of deep-sea polymetallic nodules resources commercial development technology and formulated 2035 The goal of commercial development in 2010 has made the mining of deep-sea polymetallic nodules receive widespread attention. [0003] The core problem of the deep-sea polymetallic nodules resource mining system is how to collect and upgrade the o...

AI Technical Summary

Problems solved by technology

[0004] (1) The thin and soft sediment has low shear strength, the traction force of self-propelled mining vehicles is limited, and insufficient power is not conducive to walking, especially the terrain with a large slope is not conducive to the work of self-propelled mining vehicles, which greatly restricts the mining area;

[0005] (2) Polymetallic nodules belong to the type of surface ore, and the abundance is low, only 10-20 kg per square meter. Due to power problems, the existing self-propelled mining vehicles have limited single mining width, and it is difficult to greatly increase the mining capacity and scale. Therefore, Mining efficiency is low;

[0006] (3) The existing collection head adopts a line-by-line layout, which has insufficient adaptability to changes in the micro-topography within the mining width, which may reduce the recovery rate

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