CN111577289A - Deep-sea near-bottom long-arm swing type multi-metal nodule mining system and method - Google Patents
Deep-sea near-bottom long-arm swing type multi-metal nodule mining system and method Download PDFInfo
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- CN111577289A CN111577289A CN202010638059.9A CN202010638059A CN111577289A CN 111577289 A CN111577289 A CN 111577289A CN 202010638059 A CN202010638059 A CN 202010638059A CN 111577289 A CN111577289 A CN 111577289A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
- E21C50/02—Obtaining minerals from underwater, not otherwise provided for dependent on the ship movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
- B63B27/25—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines for fluidised bulk material
Abstract
The invention discloses a deep-sea near-bottom long-arm swing type multi-metal nodule mining system and a method, wherein the mining system comprises a water surface support ship, an underwater near-bottom mining platform and a seabed acquisition system, the water surface support ship is connected with the underwater near-bottom mining platform through a main ore raising pipeline, and the underwater near-bottom mining platform is connected with the seabed acquisition system through a long arm; the seabed acquisition system comprises a hinged suction head; the mining method is that the underwater near-bottom mining platform sends high-pressure water to the seabed acquisition system through the long arm to drive the hinged suction head to rotate and stir seabed sediments so as to strip and suspend ores from the sediments, the ores are sucked and lifted into the underwater near-bottom mining platform through the long arm, and the ores are lifted to a water surface supporting ship through the main ore lifting pipeline. The mining system drives the seabed acquisition system to swing to acquire ores by descending the long arm of the underwater near-bottom mining platform, so that the mining system is stronger in adaptability, wider in acquisition width and high in mining efficiency.
Description
Technical Field
The invention relates to a deep-sea multi-metal nodule and rare earth mining system and method, in particular to a deep-sea near-bottom long-arm swing type multi-metal nodule mining system and method.
Background
The deep sea bottom contains abundant mineral resources such as polymetallic nodule, rare earth and the like, and with the gradual depletion of land resources and the development of ocean technologies, more and more countries shift the development of resources to the deep sea, and particularly developed countries in recent years accelerate the research and development progress of the deep sea polymetallic nodule resource commercial development technology, and even establish the target of commercial development.
The core problem of the current deep sea polymetallic nodule resource exploitation system is how to efficiently collect and lift ores existing on the seabed thin and soft sediments to a sea surface mining ship. The existing deep sea polymetallic nodule mining basic scheme is that a crawler-type or sled self-propelled mining vehicle is arranged on a sea surface mining supporting mother ship to the seabed, the mining vehicle and the sea surface supporting mother ship are connected through a lifting system consisting of a pump and a pipeline, and collected minerals are conveyed to the mother ship on the sea surface through the lifting system. The scheme has the following problems that firstly, the shear strength of the thin and soft sediments is low, the traction force of the track self-propelled mining vehicle is limited, the power is insufficient, the track self-propelled mining vehicle is not beneficial to walking, especially, the operation of the self-propelled mining vehicle is limited by a submarine ditch and a terrain with a large gradient (the area with the gradient larger than 15 degrees is listed as non-mining at present), partial mining areas are abandoned, and the recovery rate is reduced; secondly, the polymetallic nodules belong to a surface mine type, each square meter only has 10-20 kilograms, and the existing self-propelled mining vehicle has limited single mining width due to the power problem, so that the mining capacity and scale are difficult to greatly improve, and the mining efficiency is low; thirdly, the existing collecting head adopts a horizontal arrangement layout form, the adaptability to the change of micro-topography in the mining width is insufficient, and the recovery rate and the mining efficiency are reduced.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a deep-sea near-bottom long-arm swing type multi-metal nodule mining system and method.
In order to solve the technical problems, the invention adopts the technical scheme that: a deep sea near-bottom long-arm swing type multi-metal nodule mining system comprises a water surface supporting ship, an underwater near-bottom mining platform and a seabed acquisition system, wherein the water surface supporting ship is connected with the underwater near-bottom mining platform through a main ore raising pipeline, the underwater near-bottom mining platform is connected with the seabed acquisition system through a long arm, and the underwater near-bottom mining platform swings back and forth to drive the seabed acquisition system to work back and forth on the surface of a sediment through the long arm; the seabed acquisition system comprises a seabed acquisition system body, and a hinged suction head is arranged on the seabed acquisition system body; the underwater near-bottom mining platform sends high-pressure water to the seabed acquisition system through the long arm to drive the hinged suction head to rotate and stir seabed sediments so as to strip and suspend ores from the sediments, the long arm pumps and lifts the ores into the underwater near-bottom mining platform, and the ores are lifted to a water surface supporting ship through the main ore lifting pipeline.
The underwater near-bottom mining platform comprises an underwater near-bottom mining platform body, a high-pressure water system, a pumping system, a storage and feeding system and a long arm;
the upper part of the underwater near-bottom mining platform body is connected with a hose which is used for connecting a main ore-raising pipeline; the lower part of the underwater near-bottom mining platform body is connected with a long arm, and the long arm is used for connecting a seabed acquisition system and dragging the seabed acquisition system to do swinging cleaning operation to acquire ores; the high-pressure water system and the pumping system are arranged on the underwater near-bottom mining platform body; the long arm comprises a high-pressure water pipeline and an ore conveying pipeline, and the high-pressure water system is connected with the seabed acquisition system through the high-pressure water pipeline and supplies high-pressure water for the seabed acquisition system; the pumping system is connected with the seabed acquisition system through an ore conveying pipeline and pumps the ore from the seabed acquisition system;
the storage and feeding system is arranged on the underwater near-bottom mining platform body and comprises a storage bin and a feeder, and the feeder is arranged below the storage bin and communicated with the storage bin; the storage bin is communicated with the pumping system and receives the ore pumped by the pumping system; the feeder is communicated with the main winnowing pipeline to convey ores in the storage bin into the main winnowing pipeline.
The underwater near-bottom mining platform further comprises a platform propelling power system, and the platform propelling power system is arranged on the underwater near-bottom mining platform body and is used for driving the underwater near-bottom mining platform body to move forwards and swing;
the platform propulsion power system comprises a positioning pile and a side-push propeller, the positioning pile is arranged at the lower part of the underwater near-bottom mining platform body and is used for realizing underwater stepping motion of the underwater near-bottom mining platform; the port and the starboard at the tail part of the underwater near-bottom mining platform body are respectively provided with a side-push propeller, and the side-push propellers are used for realizing the left-right swing of the underwater near-bottom mining platform.
The seabed acquisition system further comprises a hydraulic motor and a high-pressure water ejector, wherein the motor inlet of the hydraulic motor is communicated with a high-pressure water pipeline, and the motor outlet of the hydraulic motor is connected with the high-pressure water ejector; the high-pressure water ejector is arranged at the lower part of the ore conveying pipeline, and the position of a pipeline inlet at the lower end of the ore conveying pipeline corresponds to the position of the hinged suction head; the hinged suction head is arranged at the bottom of the seabed acquisition system body, and one end of the hinged suction head is fixedly connected with an output shaft of the hydraulic motor;
the tail part of the seabed acquisition system body is provided with a limiting plate which can limit the position of the hinged suction head to prevent the hinged suction head from sinking into sediments, and the seabed acquisition system can better adapt to the change of seabed microtopography, and the hinged suction head can work close to the bottom during swinging cleaning.
And furthermore, a tower crane is arranged on the moon pool of the water surface support ship, the main ore-lifting pipeline is hoisted at the lower end of the tower crane, and the underwater near-bottom mining platform is hoisted at the lower end of the main ore-lifting pipeline.
The underwater near-bottom mining platform further comprises a communication positioning system and a monitoring system, wherein the communication positioning system and the monitoring system are both arranged on the underwater near-bottom mining platform body; the communication positioning system is an underwater platform communication and ultrashort baseline positioning system and is used for accurately determining the relative positions and postures of a water surface support ship, an underwater near-bottom mining platform and a seabed acquisition system; the monitoring system is a seabed microtopography and ore occurrence condition monitoring system and is used for acquiring seabed microtopography and ore occurrence conditions.
A mining method of a deep-sea near-bottom long-arm swing type multi-metal nodule mining system comprises the following steps:
the high-pressure water system provides high-pressure water for the seabed collection system through a high-pressure water pipeline to drive a hydraulic motor, the hydraulic motor drives a hinged suction head to rotate and hinge and suck, and the hinged suction head stirs seabed surface sediments to separate ores from the sediments; high-pressure water flows through a hydraulic motor and then is injected into an ore conveying pipeline through a high-pressure water ejector, the flow speed required for conveying ores is generated in the ore conveying pipeline, the ores are sucked into the ore conveying pipeline from a hinged suction head through a pumping system, the ores are conveyed into a storage bin of an underwater near-bottom mining platform and conveyed into a main ore raising pipeline by a feeder, and further conveyed onto a water surface support ship;
under the driving of the platform propelling power system, the underwater near-bottom mining platform drives the seabed acquisition system to advance and do sweeping type swing through the long arm, and the acquisition of seabed ores by the seabed acquisition system is completed.
The mining system provided by the invention aims at the characteristics of wide range and low abundance of the polymetallic nodule ore existing on the thin and soft sediment, and the long arm is lowered down from the underwater near-bottom mining platform to drive the seabed acquisition system to swing to acquire the ore, so that the problem of insufficient walking power of the mining vehicle on the sediment in the prior art is solved, meanwhile, the mining system is more easily adapted to seabed ditches and terrain conditions with larger gradient, and the adaptability is stronger; the long arm drives the seabed acquisition system to swing, so that the acquisition width of the seabed acquisition system in single swing can reach tens of meters, the mining width is larger, and the mining efficiency and the mining capacity are greatly improved; the seabed collection system is provided with the limiting plate so that the hinged suction head can better adapt to micro-topography fluctuation, ores are collected close to the bottom, the phenomenon that the hinged suction head is too high in local off-bottom height or is inserted into sediments due to the micro-topography fluctuation is avoided, and the recovery rate is improved.
Drawings
Fig. 1 is a schematic view of the construction of the mining system of the present invention.
Fig. 2 is a schematic structural view of an underwater near-bottom mining platform.
Fig. 3 is a schematic structural diagram of the seafloor collection system.
FIG. 4 is a schematic view showing the connection relationship between the hydraulic motor and the articulated suction head and the high pressure water ejector.
In the figure: 1. a surface support vessel; 2. an underwater near-bottom mining platform; 3. a seafloor collection system; 4. a main winnowing pipeline; 5. an underwater near-bottom mining platform body; 6. a platform propulsion power system; 7. a high pressure water system; 8. a pumping system; 9. a material storage and feeding system; 10. a communication positioning system; 11. a monitoring system; 12. a hose; 13. tower crane; 14. positioning the pile; 15. a side-thrust propeller; 16. a subsea acquisition system body; 17. hinging the suction head; 18. a high pressure water line; 19. an ore delivery conduit; 20. collecting system monitoring equipment; 21. a high-pressure water ejector; 22. an interface; 23. a hydraulic motor; 24. and a limiting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the deep-sea near-bottom long-arm swing type multi-metal nodule mining system comprises a water surface supporting ship 1, an underwater near-bottom mining platform 2 and a seabed acquisition system 3 which work cooperatively to form the mining system.
A tower crane 13 is arranged on a moon pool of the water surface support ship 1, a main ore lifting pipeline 4 is hoisted at the lower end of the tower crane 13, and an underwater near-bottom mining platform 2 is hoisted at the lower end of the main ore lifting pipeline 4. The water surface supporting ship 1 is connected with an underwater near-bottom mining platform 2 through a main ore lifting pipeline 4, the underwater near-bottom mining platform 2 is connected with a seabed acquisition system 3 through a long arm, and the underwater near-bottom mining platform swings back and forth to drive the seabed acquisition system to work back and forth on the surface of sediment through the long arm; the seabed acquisition system 3 comprises a seabed acquisition system body 16, and a hinged suction head 17 is arranged on the seabed acquisition system body 16; the underwater near-bottom mining platform 2 sends high-pressure water to the seabed acquisition system 3 through the long arm to drive the hinged suction head 17 to rotate and stir seabed sediments so as to strip and suspend ores from the sediments, the ores are sucked and lifted into the underwater near-bottom mining platform 2 through the long arm, and the ores are lifted to the water surface supporting ship 1 through the main ore lifting pipeline 4.
As shown in fig. 2 and 3, the height of the underwater near-bottom mining platform 2 from the sea bottom is 20-50 meters, the height from the bottom is determined according to the submarine topography conditions of the mining area, and the height from the bottom generally exceeds the highest mountain peak of the sea bottom, so that the underwater near-bottom mining platform is prevented from being blocked by a mountain body when mining moves.
The underwater near-bottom mining platform 2 comprises an underwater near-bottom mining platform body 5, a high-pressure water system 7, a pumping system 8, a storage and feeding system 9 and a long arm; the upper portion of nearly end mining platform body 5 is connected with hose 12 under water, and hose 12 is used for connecting main raise ore pipe 4, and hose 12 can bear vertical pulling force, can take place certain relative displacement, nevertheless does not influence the rotation of nearly end mining platform 2 under water, can not produce the moment of torsion.
The lower part of the underwater near-bottom mining platform body 5 is connected with a long arm, and the long arm is used for connecting the seabed acquisition system 3 and dragging the seabed acquisition system to do swinging cleaning operation to acquire ores; the high-pressure water system 7 and the pumping system 8 are both arranged on the underwater near-bottom mining platform body 5; the long arm comprises a high-pressure water pipeline 18 and an ore delivery pipeline 19, and the high-pressure water system 7 is connected with the seabed acquisition system 3 through the high-pressure water pipeline 18 and supplies high-pressure water for the seabed acquisition system; the pumping system 8 is connected with the seabed acquisition system 3 through an ore conveying pipeline 19, and is used for pumping ore from the seabed acquisition system 3 and conveying the ore into the underwater near-bottom mining platform 2;
the storage and feeding system 9 is arranged on the underwater near-bottom mining platform body 5, the storage and feeding system 9 comprises a storage bin and a feeder, and the feeder is arranged below the storage bin and communicated with the storage bin; the storage bin is communicated with the pumping system 8 and receives the ore pumped by the pumping system; the feeder is communicated with the main winnowing pipeline 4 to convey ores in the storage bin into the main winnowing pipeline.
The underwater near-bottom mining platform 2 also comprises a platform propelling power system 6, and the platform propelling power system adopts a propelling power system commonly used in the field of deep sea polymetallic nodule mining in the prior art; the platform propulsion power system 6 is arranged on the underwater near-bottom mining platform body 5 and is used for driving the underwater near-bottom mining platform body to move forwards and swing; the platform propulsion power system 6 comprises a positioning pile 14 and a side-push propeller 15, wherein the positioning pile 14 is arranged at the lower part of the underwater near-bottom mining platform body 5 and is used for realizing underwater stepping motion of the underwater near-bottom mining platform and propelling the underwater near-bottom mining platform to move forwards; the positioning piles comprise main propelling positioning piles and auxiliary propelling positioning piles, the main propelling positioning piles and the auxiliary propelling positioning piles are arranged in parallel at intervals, and the main propelling positioning piles and the auxiliary propelling positioning piles are alternately inserted into the seabed and pulled out of the seabed to realize the stepping motion of the underwater near-bottom mining platform; in addition, the positioning pile also plays a role in positioning when the underwater near-bottom mining platform swings, and fixes the head position of the underwater near-bottom mining platform. The port and the starboard of the tail part of the underwater near-bottom mining platform body 5 are respectively provided with a side pushing propeller, and the side pushing propellers are used for pushing the tail part of the underwater near-bottom mining platform to swing left and right by taking the main positioning pile and the auxiliary positioning pile as circle centers; the underwater near-bottom mining platform 2 drives the seabed acquisition system 3 to move forwards and swing through a long arm.
To reduce the tension experienced by the main uplift pipeline 4, the underwater near-bottom mining platform 2 is made of a buoyant material to reduce the effective underwater weight as much as possible while maintaining a certain effective gravity to enable the spud 14 on the underwater near-bottom mining platform 2 to be inserted into the sediment on the seabed.
The underwater near-bottom mining platform 2 further comprises a communication positioning system 10 and a monitoring system 11, wherein the communication positioning system 10 and the monitoring system 11 are both arranged on the underwater near-bottom mining platform body 5; the communication positioning system 10 and the monitoring system 11 of the invention both adopt systems commonly used in the field of deep sea multi-metal nodule mining in the prior art, and the communication positioning system 10 is an underwater platform communication and ultra-short baseline positioning system and is used for accurately determining the relative positions and postures of a water surface support ship 1, an underwater near-bottom mining platform 2 and a seabed acquisition system 3 so as to analyze and evaluate the working state of the whole mining system, the displacement condition of a main ore-lifting pipeline and the like. The monitoring system 11 is a seabed microtopography and ore occurrence condition monitoring system, a sonar is adopted to obtain seabed microtopography and landform images, seabed microtopography and landform characteristics are inverted based on an image analysis technology, and a three-dimensional landform image and ore particle size distribution and abundance changes are generated.
As shown in fig. 4, the seabed collection system 3 further comprises a hydraulic motor 23 and a high-pressure water ejector 21, wherein a motor inlet of the hydraulic motor 23 is communicated with the high-pressure water pipeline 18, and a motor outlet of the hydraulic motor 23 is connected with the high-pressure water ejector 21; high-pressure water flows through the hydraulic motor and then is converted into mechanical energy to drive the hinged suction head to rotate.
The high-pressure water ejector 21 is arranged at the lower part of the ore conveying pipeline 19, and the position of a pipeline inlet at the lower end of the ore conveying pipeline 19 corresponds to the position of the hinged suction head 17, so that ore can enter the ore conveying pipeline; the hinged suction head 17 is arranged at the bottom of the seabed acquisition system body 16, and one end of the hinged suction head 17 is fixedly connected with an output shaft of the hydraulic motor 23;
the high pressure water flows through the hydraulic motor and then flows through the high pressure water ejector 21 to be ejected into the ore conveying pipeline 19, the residual energy of the high pressure water is utilized, the flow speed required by conveying the ore is generated in the ore conveying pipeline 19, a suction effect is formed, and the ore stirred by the hinged suction head is sucked into the ore conveying pipeline. To prevent the jet energy from being insufficient to produce the flow rate required to convey the ore in the ore conveying pipeline, a pumping system is mounted on the sub-sea near-bottom mining platform to pump the ore from the reaming head into the ore conveying pipeline. Therefore, no power equipment is installed on the seabed acquisition system, the weight is greatly reduced, the grounding specific pressure is reduced, and the excessive influence on the sediments is slowed down.
The seabed collection system body 16 is also provided with collection system monitoring equipment 20, and the collection system monitoring equipment 20 is a device commonly used in the deep sea polymetallic nodule resource exploitation process, and usually adopts image collection equipment such as a camera and the like to constantly monitor the seabed condition.
The tail part of the seabed collection system body 16 is provided with a limiting plate 24, the limiting plate can reduce the ground pressure of the seabed collection system, limit the depth of the hinged suction head sinking into the sediment, avoid disturbing the sediment at the lower layer, enable the seabed collection system to better adapt to the change of seabed microtopography, enable the hinged suction head to work close to the bottom during swinging and cleaning, avoid the difficulty of ore capture caused by the increase of the ground height of a concave part, and also avoid the situation that the hinged suction head at a convex part is inserted into the sediment and can not collect the ore.
A mining method of a deep-sea near-bottom long-arm swing type multi-metal nodule mining system comprises the following steps:
the high-pressure water system 7 provides high-pressure water for the seabed collection system through a high-pressure water pipeline 18 to drive a hydraulic motor 23, the hydraulic motor 23 drives a hinged suction head 17 to rotate and hinge, and the hinged suction head 17 stirs seabed surface sediments to separate ores from the sediments; high-pressure water flows through a hydraulic motor 23 and then is injected into the ore conveying pipeline 19 through a high-pressure water injector 21, a flow speed required for conveying ores is generated in the ore conveying pipeline 19, the ores are sucked into the ore conveying pipeline 19 from the hinged suction head 17 through a pumping system 8, the ores are conveyed into a storage bin of the underwater near-bottom mining platform 2 and conveyed into the main ore raising pipeline 4 through a feeder, and then conveyed onto a water surface supporting ship;
under the drive of the platform propelling power system 6, the underwater near-bottom mining platform 2 drives the seabed acquisition system 3 to advance and do sweeping type swing through the long arm, and the seabed acquisition system 3 acquires seabed ores.
The long-arm swing type multi-metal nodule mining system provided by the invention has the advantages that the submarine acquisition system with the hinged suction head is lowered to the seabed for ore acquisition through the self-propelled underwater near-bottom mining platform 2, and the underwater near-bottom mining platform 2 drives the submarine acquisition system 3 to swing to clean submarine ores, so that the problem that the low shear strength of rare soft sediments cannot provide enough traction force for a crawler-type mining vehicle or other walking chassis in the prior art is solved; meanwhile, the underwater near-bottom mining platform 2 can realize self-propulsion by utilizing the main positioning pile and the auxiliary positioning pile, so that the underwater near-bottom mining platform and the water surface support ship 1 keep synchronous, the upper end and the lower end of the main ore lifting pipeline 4 keep synchronous motion, the risk that the bending stress is overloaded due to overlarge position deviation of the bottom end of the main ore lifting pipeline is reduced, and the mechanical property of the whole mining system is improved. The seabed collection system 3 adopts a hinged suction mode and operates close to the bottom, so that the seabed collection system is better suitable for the change of seabed microtopography and the recovery rate is improved; and the long arm swinging sweeping type operation is adopted, so that the acquisition width of single mining is greatly increased, and the single sweeping width can reach tens of meters, thereby improving the mining efficiency and the recovery rate.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (7)
1. The utility model provides a many metals of deep sea nearly bottom long arm oscillating tuberculosis mining system, includes surface of water support boats and ships (1), its characterized in that: the underwater near-bottom mining platform is characterized by further comprising an underwater near-bottom mining platform (2) and a seabed acquisition system (3), wherein the water surface supporting ship (1) is connected with the underwater near-bottom mining platform (2) through a main ore raising pipeline (4), the underwater near-bottom mining platform (2) is connected with the seabed acquisition system (3) through a long arm, and the underwater near-bottom mining platform swings back and forth to drive the seabed acquisition system to work back and forth on the surface of sediment through the long arm; the seabed acquisition system (3) comprises a seabed acquisition system body (16), and a hinged suction head (17) is arranged on the seabed acquisition system body (16); the underwater near-bottom mining platform (2) sends high-pressure water to the seabed acquisition system (3) through the long arm to drive the articulated suction head (17) to rotate and stir seabed sediments so as to strip and suspend ores from the sediments, the ores are sucked and lifted into the underwater near-bottom mining platform (2) through the long arm, and the ores are lifted to a water surface supporting ship (1) through the main ore lifting pipeline (4).
2. The deep-sea near-bottom long-arm oscillating multi-metal nodule mining system of claim 1, wherein: the underwater near-bottom mining platform (2) comprises an underwater near-bottom mining platform body (5), a high-pressure water system (7), a pumping system (8), a storage and feeding system (9) and a long arm;
the upper part of the underwater near-bottom mining platform body (5) is connected with a hose (12), and the hose (12) is used for connecting a main ore raising pipeline (4); the lower part of the underwater near-bottom mining platform body (5) is connected with a long arm, and the long arm is used for connecting the seabed acquisition system (3) and dragging the seabed acquisition system to perform swinging cleaning operation to acquire ores; the high-pressure water system (7) and the pumping system (8) are both arranged on the underwater near-bottom mining platform body (5); the long arm comprises a high-pressure water pipeline (18) and an ore conveying pipeline (19), and the high-pressure water system (7) is connected with the seabed acquisition system (3) through the high-pressure water pipeline (18) and supplies high-pressure water for the seabed acquisition system; the pumping system (8) is connected with the seabed acquisition system (3) through an ore conveying pipeline (19) and is used for pumping ore from the seabed acquisition system (3);
the storage and feeding system (9) is arranged on the underwater near-bottom mining platform body (5), the storage and feeding system (9) comprises a storage bin and a feeding machine, and the feeding machine is arranged below the storage bin and communicated with the storage bin; the storage bin is communicated with a pumping system (8) and receives ore pumped by the pumping system; the feeder is communicated with the main ore-raising pipeline (4) and conveys ores in the storage bin into the main ore-raising pipeline.
3. The deep-sea near-bottom long-arm oscillating multi-metal nodule mining system of claim 2, wherein: the underwater near-bottom mining platform (2) further comprises a platform propelling power system (6), and the platform propelling power system (6) is arranged on the underwater near-bottom mining platform body (5) and is used for driving the underwater near-bottom mining platform body to move forwards and swing;
the platform propulsion power system (6) comprises a positioning pile (14) and a side-push propeller (15), the positioning pile (14) is arranged at the lower part of the underwater near-bottom mining platform body (5), and the positioning pile is used for realizing underwater stepping motion of the underwater near-bottom mining platform; the port and the starboard at the tail of the underwater near-bottom mining platform body (5) are respectively provided with a side-push propeller, and the side-push propellers are used for realizing the left-right swinging of the underwater near-bottom mining platform.
4. The deep-sea near-bottom long-arm oscillating multi-metal nodule mining system of claim 3, wherein: the seabed acquisition system (3) further comprises a hydraulic motor (23) and a high-pressure water ejector (21), wherein a motor inlet of the hydraulic motor (23) is communicated with a high-pressure water pipeline (18), and a motor outlet of the hydraulic motor (23) is connected with the high-pressure water ejector (21); the high-pressure water ejector (21) is arranged at the lower part of the ore conveying pipeline (19), and the position of a pipeline inlet at the lower end of the ore conveying pipeline (19) corresponds to the position of the hinged suction head (17); the hinged suction head (17) is arranged at the bottom of the seabed acquisition system body (16), and one end of the hinged suction head (17) is fixedly connected with an output shaft of the hydraulic motor (23);
the tail part of the seabed acquisition system body (16) is provided with a limiting plate (24), the limiting plate can limit the position of the hinged suction head to prevent the hinged suction head from sinking into sediments, the seabed acquisition system can better adapt to the change of seabed microtopography, and the hinged suction head can work close to the bottom during swinging and cleaning.
5. The deep-sea near-bottom long-arm oscillating multi-metal nodule mining system of claim 4, wherein: a tower crane (13) is arranged on a moon pool of the water surface support ship (1), a main ore-lifting pipeline (4) is hoisted at the lower end of the tower crane (13), and an underwater near-bottom mining platform (2) is hoisted at the lower end of the main ore-lifting pipeline (4).
6. The deep-sea near-bottom long-arm oscillating multi-metal nodule mining system of claim 5, wherein: the underwater near-bottom mining platform (2) further comprises a communication positioning system (10) and a monitoring system (11), wherein the communication positioning system (10) and the monitoring system (11) are arranged on the underwater near-bottom mining platform body (5); the communication positioning system (10) is an underwater platform communication and ultrashort baseline positioning system and is used for accurately determining the relative positions and postures of the water surface support ship (1), the underwater near-bottom mining platform (2) and the seabed acquisition system (3); the monitoring system (11) is a seabed microtopography and ore occurrence monitoring system and is used for acquiring seabed microtopography and ore occurrence.
7. A mining method of the deep-sea near-bottom long-arm swing type multi-metal nodule mining system as claimed in any one of claims 4 to 6, characterized in that: the mining method comprises the following steps:
the high-pressure water system (7) provides high-pressure water for the seabed acquisition system through a high-pressure water pipeline (18) to drive a hydraulic motor (23), the hydraulic motor (23) drives a hinged suction head (17) to rotate and hinge, and the hinged suction head (17) stirs seabed surface sediments to separate ores from the sediments; high-pressure water flows through a hydraulic motor (23) and then is injected into an ore conveying pipeline (19) through a high-pressure water injector (21), a flow speed required for conveying ores is generated in the ore conveying pipeline (19), the ores are sucked into the ore conveying pipeline (19) from a hinged suction head (17) through a pumping system (8), the ores are conveyed into a storage bin of an underwater near-bottom mining platform (2) and conveyed into a main ore lifting pipeline (4) through a feeder, and then conveyed onto a water surface support ship;
under the driving of the platform propelling power system (6), the underwater near-bottom mining platform (2) drives the seabed acquisition system (3) to advance and do sweeping type swing through the long arm, and the seabed acquisition system (3) acquires seabed ores.
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| CN202010638059.9A Pending CN111577289A (en) | 2020-07-03 | 2020-07-03 | Deep-sea near-bottom long-arm swing type multi-metal nodule mining system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127893A (en) * | 2020-10-15 | 2020-12-25 | 中国船舶工业集团公司第七0八研究所 | Deep sea self-propelled suspension type collection ore machine |
| CN113187483A (en) * | 2021-06-30 | 2021-07-30 | 金奥深海装备技术(深圳)有限责任公司 | Underwater mining vehicle |
| CN113982590A (en) * | 2021-12-27 | 2022-01-28 | 中国海洋大学 | Buoyancy self-elevating type multi-metal nodule transmission system and method |
| CN117722182A (en) * | 2024-02-07 | 2024-03-19 | 长沙矿冶研究院有限责任公司 | Deep sea multi-metal nodule exploitation test system |
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2020
- 2020-07-03 CN CN202010638059.9A patent/CN111577289A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127893A (en) * | 2020-10-15 | 2020-12-25 | 中国船舶工业集团公司第七0八研究所 | Deep sea self-propelled suspension type collection ore machine |
| CN113187483A (en) * | 2021-06-30 | 2021-07-30 | 金奥深海装备技术(深圳)有限责任公司 | Underwater mining vehicle |
| CN113187483B (en) * | 2021-06-30 | 2021-09-17 | 金奥深海装备技术(深圳)有限责任公司 | Underwater mining vehicle |
| CN113982590A (en) * | 2021-12-27 | 2022-01-28 | 中国海洋大学 | Buoyancy self-elevating type multi-metal nodule transmission system and method |
| CN113982590B (en) * | 2021-12-27 | 2022-03-22 | 中国海洋大学 | Buoyancy self-elevating type multi-metal nodule transmission system and method |
| CN117722182A (en) * | 2024-02-07 | 2024-03-19 | 长沙矿冶研究院有限责任公司 | Deep sea multi-metal nodule exploitation test system |
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