Drag mining equipment and mining method based on circulating wall jet

Abstract

The present invention discloses a towed mining equipment and a mining method based on a circulating wall-attached jet. The towed mining equipment comprises an ore box, a balancing shell is installed on the outer side of the ore box, a water pump is installed in the ore box, the ore box is connected to an ore conveying pipeline, a water pump suction port is connected to the ore conveying pipeline through the ore box, and a suction and ore collecting head is connected to the end of the ore conveying pipeline; the water pump ejection port is connected to a pipeline system through a guide, the pipeline system is connected to a plurality of circulating pipelines through a diverter, and the ends of the plurality of circulating pipelines are all connected to a wall-attached jet nozzle; when the water pump is working, the suction and ore collecting head collects bottom ore particles by using a flat-mouthed dustpan-type structure; the wall-attached jet nozzle forms a low-pressure zone at the bottom of the arc-shaped convex wall, and couples with the suction flow of the suction and ore collecting head, so that the ore particles are more easily stripped, thereby improving the collection rate of the ore particles; the innovative flow field design of the present invention effectively improves the seabed mineral collection efficiency and reduces the energy consumption during the operation.

Description

Technical Field

[0001] The invention belongs to the technical field of seabed mineral collection, and in particular relates to a towed mining equipment and a mining method based on a circulating wall jet. Background Art

[0002] The vast deep sea contains rich mineral resources with many types, large reserves and high grade. It has great prospects for development and utilization. It is considered to be the most important alternative resource for land minerals in the 21st century and has become an important strategic goal of all countries. The deep-sea mineral resources are rich in copper, cobalt, nickel, rare earth and other metals that can supplement my country's very scarce strategic metal resources. If they are developed and utilized, they can effectively guarantee the supply security of resources needed for my country's economic development. The proven seabed minerals with great development potential mainly include polymetallic nodules, polymetallic sulfides and cobalt-rich crusts, which are distributed at seabeds of hundreds to thousands of meters. The environmental impact study of deep-sea mining shows that deep-sea mining will inevitably have a negative impact on deep-sea biodiversity and ecosystems in a local area, including not only the direct death of organisms caused by deep-sea mining activities, but also the possible damage to a larger area caused by collateral effects such as the spread of sediment plumes.

[0003] Deficiencies and reasons of existing technologies: 1. Most existing technologies do not have the function of overall water circulation, which results in the formation of strong impact water flow during the mining process, causing great disturbance to the bottom sediments and forming sediment plumes, which pose a potential threat to the ecological environment of the deep and middle layers of the ocean, and are not conducive to long-term environmentally friendly resource development. 2. Most existing technologies are single-point collection and do not have scanning collection functions. The collection of a large range of ores requires multiple movements of the mining vehicle, and the mining operation is inefficient. 3. Most existing hydraulic ore collection technologies use constant jets, which results in slow start-up of mineral particles, high energy consumption, and large environmental disturbances. 4. Existing technologies are not suitable for multiple seabed terrains. In areas with variable seabed terrain, not only does collection become more difficult, but it is also prone to dangers such as anchoring and rollover. Summary of the invention

[0004] The present invention provides a towed mining equipment and a mining method based on a circulating wall jet, so as to solve the problems of large environmental disturbance, low operating efficiency and high energy consumption in the existing deep-sea mining seabed ore collection method.

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] An embodiment of the present invention provides a towed mining equipment based on circulating wall-codon jet, comprising a mine box (1), a balancing shell (2) being installed on the outside of the mine box (1), a carrying platform (5) being connected to the front side of the mine box (1), and a mud sled (11) being arranged at the bottom of the carrying platform (5); a water pump (3) being installed in the mine box (1), the mine box (1) being connected to an ore conveying pipeline (6), a suction port of the water pump (3) being connected to the ore conveying pipeline (6) through the mine box (1), and a suction ore collecting head (6-1) being connected to the end of the ore conveying pipeline (6); an ejection port of the water pump (3) being connected to a pipeline system (7) through a flow guide (1-2), the pipeline system (7) being connected to a plurality of circulating pipelines (9) through a flow divider (8), and the ends of the plurality of circulating pipelines (9) being connected to wall-codon jet nozzles (9-1); the suction ore collecting head (6-1) and the plurality of circulating pipelines (9) being fixed to the bottom of the front end of the carrying platform (5);

[0007] The suction ore-collecting head (6-1) is a flat-mouthed dustpan-type structure, and the wall-attached jet nozzle (9-1) is arranged toward the arc-shaped bottom (6-2) of the flat-mouthed dustpan-type structure; when the water pump (3) is working, the suction ore-collecting head (6-1) uses the flat-mouthed dustpan-type structure to collect the bottom mineral particles, and the wall-attached jet nozzle (9-1) forms a low-pressure area at the arc-shaped bottom (6-2), and couples with the suction flow of the suction ore-collecting head (6-1), so that the mineral particles (12) are more easily peeled off, thereby improving the collection rate of the mineral particles.

[0008] In an optional embodiment of the present invention, the bottom of the mud sled (11) is a flat bottom support structure (11-1) for reducing bottom pressure so that the towed mining equipment is not easily sunk into soft soil.

[0009] In an optional embodiment of the present invention, a gathering structure (11-2) is provided on one side of the mud sled (11), and the gathering structure (11-2) is an inclined structure; the gathering structure (11-2) is used to cross small obstacles and gullies to improve driving stability; and is also used to gather mineral particles for collection to improve collection efficiency.

[0010] In an optional embodiment of the present invention, the mud sled (11) is further provided with a square support body (11-3) for supporting the carrying platform (5).

[0011] In an optional embodiment of the present invention, an environment sensing module (10) is further provided on the top of the front portion of the carrying platform (5), and the environment sensing module (10) uses a neural network to repair the image and intelligently adjusts the power of the water pump (3) according to the distribution of seabed mineral particles, thereby avoiding the idling of the water pump (3) and reducing the energy consumption of the towed mining equipment.

[0012] In an optional embodiment of the present invention, two electric drive tracks (4) are connected to both sides of the bottom of the balancing shell (2), and the two electric drive tracks (4) are used to increase the contact area with the seabed, prevent sinking, and achieve stable walking operation.

[0013] In an optional embodiment of the present invention, the water pump (3) is a submersible jet pump.

[0014] An embodiment of the present invention provides a towed mining method based on a circulating wall jet, which is implemented by a towed mining equipment based on a circulating wall jet according to the above embodiment, and is characterized in that it includes the following steps:

[0015] Step 1, after the towed mining equipment arrives at the ore collection operation area, the environment perception module (10) detects the surrounding area, determines the density of the nearby ore particles after image restoration, and adjusts the power of the water pump (3) to a preset area, while the two electric drive crawlers (4) drive the towed mining equipment to perform towed collection;

[0016] Step 2, after the water pump (3) is operated, the water flow discharged from the outlet of the ore box (1) is collected by the guide device (1-2) and enters the circulation system through the pipeline system (7). The circulating flow is respectively flowed into the suction and collection head (6-1) through the flow divider (8), and flows into the wall-attached jet nozzle (9-1) through the circulation pipeline to form a high-speed jet. By utilizing the Coanda effect, the high-speed jet adheres to the curved wall to form a low-pressure area, and is combined with the suction and collection head (6-1) process, so that the mineral particles are easier to be stripped and efficiently collected, and are collected into the ore box (1). At the same time, the gathering structure (11-2) at the front end of the mud sled (11) effectively gathers the minerals on both sides during the forward movement of the towed mining equipment, thereby expanding the collection range and significantly improving the efficiency of the collection operation.

[0017] Compared with the prior art, the embodiment of the present invention provides a towed mining equipment and a mining method based on a circulating wall jet, which has the following beneficial effects:

[0018] (1) The cyclic collection process of the present invention has less environmental disturbance. Compared with the traditional mining method, the direct discharge of wastewater in the traditional collection process will form a huge plume discharge area, which seriously harms the already fragile seabed ecosystem. In order to solve the problem of sediment diffusion caused by mining, the present invention installs a deflector at the tail discharge port to recycle wastewater and establishes a circulation system for secondary utilization, which effectively reduces the environmental disturbance problem in the collection process.

[0019] (2) The mineral collection efficiency of the present invention is higher. In the circulation system, the wastewater is guided to the wall-attached jet nozzle after passing through the diverter to form a high-speed jet. Utilizing the Coanda effect, the jet generates a low-pressure area on the curved wall and couples with the suction flow field to make the low-pressure area above the mineral more significant, thereby increasing the vertical force on the mineral, which is conducive to its shedding and peeling for easy collection. At the same time, the inclined structure at the front end of the mud sled effectively gathers the minerals on both sides during the forward movement of the device, expands the range of ore collection, and significantly improves the efficiency of the collection operation. The comprehensive design not only optimizes the mineral collection process, but also improves the overall operation effect.

[0020] (3) The mining equipment of the present invention has low energy consumption. The existing ore collection device does not have the function of recycling and utilizing the exhaust flow, which causes the kinetic energy of the discharged wastewater to be wasted. The circulation system of the present invention can reuse this part of energy in the collection system, thereby reducing unnecessary resource loss; and through the combination of the environmental perception module and the intelligent adjustment system, the water pump power can be adjusted in real time according to the actual distribution density of the seabed minerals, avoiding the operation of high-power water pumps in low-density mining areas or areas without mineral particles, thereby reducing the energy consumption of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a towed mining equipment based on circulating wall jet provided in an embodiment of the present application.

[0023] Figure 2 A front view of a towed mining equipment based on a circulating wall jet provided in an embodiment of the present application.

[0024] Figure 3 A schematic diagram of secondary utilization of seawater in a mining box in a towed mining equipment based on circulating wall jet provided in an embodiment of the present application.

[0025] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0026] Figure 5 A schematic structural diagram of a mud sled in a towed mining equipment based on a circulating wall jet provided in an embodiment of the present application.

[0027] Figure 6A schematic diagram of a circulation system in a towed mining equipment based on a circulating wall jet provided in an embodiment of the present application.

[0028] Figure 7 A schematic diagram of an environmental perception module in a towed mining equipment based on a circulating wall jet provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present invention provides a towed mining equipment based on circulating wall jet, including an ore box 1, a balance shell 2, a water pump 3, a carrying platform 5, a circulation system, an ore conveying pipeline 6, a suction and collecting head 6-1, a wall jet nozzle 9-1, a mud sled 11 and an environmental sensing module 10. The ore box 1 is used to store minerals, and the water pump 3 provides collection power. The circulation system consists of a guide 1-2, a pipeline system 7, a diverter 8 and a circulation pipeline 9. By collecting wastewater at the outlet of the ore box 1 and flowing it into the wall jet nozzle 9-1 through the circulation pipeline 9 to form a circulation flow, the purpose of reducing plume emissions and saving energy and reducing emissions is achieved. Two electric drive tracks 4 are connected to both sides of the bottom of the balance shell 2. The two electric drive tracks 4 are used to increase the contact area with the seabed, prevent sinking, and achieve stable walking operations.

[0031] A balancing shell 2 is installed on the outside of the ore box 1, and a loading platform 5 is connected to the front side of the ore box 1. Mud sleds 11 are provided on both sides of the bottom of the loading platform 5. A water pump 3 is installed in the ore box 1, and the water pump 3 is preferably a submersible jet pump. The ore box 1 is connected to the ore conveying pipeline 6, and the suction port of the water pump 3 is connected to the ore conveying pipeline 6 through the ore box 1, and the end of the ore conveying pipeline 6 is connected to the suction and ore collecting head 6-1. The ejection port of the water pump 3 is connected to the pipeline system 7 through the guide 1-2, and the ejection port of the water pump 3 is arranged in alignment with the ore box outlet 1-1. The pipeline system 7 is connected to multiple circulation pipelines 9 through the diverter 8, and the ends of the multiple circulation pipelines 9 are connected to the wall jet nozzles 9-1. The suction and ore collecting head 6-1 and the multiple circulation pipelines 9 are fixed at the bottom of the front end of the loading platform 5.

[0032] like Figure 4As shown, the suction collecting head 6-1 is a flat dustpan-shaped structure and is connected side by side by bolts. The suction port of the suction collecting head 6-1 is connected to the ore box 1 through the ore conveying pipeline 6. The wall jet nozzle 9-1 is installed in the front upper part of the suction collecting head 6-1, that is, the wall jet nozzle 9-1 is set toward the arc bottom 6-2 of the flat dustpan-shaped structure. Figure 4 and Figure 6 As shown, when the water pump 3 is working, the suction collecting head 6-1 uses a flat dustpan-type structure to collect the bottom mineral particles; the wall jet nozzle 9-1 forms a low-pressure area at the arc bottom 6-2, and couples with the suction flow of the suction collecting head 6-1, so that the mineral particles 12 are more easily peeled off, thereby improving the collection rate of the mineral particles. The seawater entering the ore box 1 flows back to the sea through the deflector 1-2, the diverter 8 and the wall jet nozzle 9-1. The wall jet nozzle 9-1 of this embodiment uses the Coanda principle to use high-speed circulating water flow attached to the curved wall to generate low pressure to vertically start the seabed minerals. The ore conveying pipeline 6 connects the suction collecting head 6-1 and the ore box 1, and is a flexible hose.

[0033] like Figure 5 As shown, the bottom of the mud sled 11 is a flat bottom support structure 11-1, which is used to reduce the bottom pressure, so that the towed mining equipment is not easy to sink into the soft soil, thereby ensuring the stability of the towed mining equipment and the continuity of operation, in order to cope with the challenges brought by the complex seabed terrain. A gathering structure 11-2 is provided on one side of the mud sled 11, and the gathering structure 11-2 is an inclined structure; the gathering structure 11-2 is used to cross small obstacles and gullies to improve driving stability; the gathering structure 11-2 is also used to effectively guide mineral particles to gather toward the suction and collection head 6-1, so that the device can achieve a wider range of collection in a shorter time, thereby further improving the collection efficiency of minerals. The mud sled 11 is also provided with a square support body 11-3 for supporting the carrying platform 5. The mud sled 11 of this embodiment is composed of a flat bottom support structure, a gathering structure and a square support body, which are connected to both sides of the suction and collection head 6-1 and can flexibly adjust the height from the bottom.

[0034] like Figure 7As shown, an environmental perception module 10 is also provided at the top of the front part of the carrying platform 5. The environmental perception module 10 is used to repair the image using a neural network, and intelligently adjust the power of the water pump 3 according to the distribution of seabed mineral particles, so as to avoid the phenomenon of idling of the water pump 3 and reduce the energy consumption of the towed mining equipment. The environmental perception module 10 of this embodiment collects image information of the seabed mining area through a visual perception system based on a convolutional neural network to achieve accurate perception of the environment. In order to solve the problems of low underwater visibility and blurred imaging, a generative adversarial network is used to perform image restoration, which significantly improves the image quality. After target detection, the environmental perception module 10 can accurately identify the type and diameter of mineral particles, as well as the seabed terrain information. According to these characteristics, the environmental perception module 10 intelligently adjusts the power of the water pump 3 to adapt to different seabed environments, realizes efficient local dynamic ore collection, improves the acquisition accuracy, and avoids the operation of high-power water pumps in low-density mining areas or areas without mineral particles, thereby reducing the energy consumption of towed mining equipment.

[0035] The towed mining equipment provides energy through a water pump 3 with a mesh cover in the ore box 1, drives the flow field at the suction and collection head for suction collection, and installs a guide 1-2 at the ore box outlet 1-1 at the tail of the ore box 1, so that the wastewater to be discharged can be collected in time, and transported to the diverter 8 through the pipeline system 7, and the recovered high-speed water flow flows into the wall jet nozzle 9-1 respectively, which not only ensures the efficient recovery of wastewater, but also can guide the recovered high-speed water flow into the wall jet nozzle 9-1 respectively, so as to achieve the effective reuse of resources; by using the Coanda effect, a low-pressure area can be formed on the curved wall, and coupled with the original suction flow, so that mineral collection is easier. Through this circulation system, the wastewater that would originally form the tail plume can be reused, and the collection efficiency can be improved, thereby achieving the effect of energy saving and emission reduction.

[0036] The embodiment of the present invention further provides a towed mining method based on circulating wall jet, which is implemented by a towed mining equipment based on circulating wall jet of the above embodiment, and includes the following steps:

[0037] Step 1: After the towed mining equipment arrives at the ore collection operation area, the environment perception module 10 detects the surrounding area, determines the density of the nearby ore particles after image restoration, and adjusts the power of the water pump 3 to the preset area. At the same time, the two electric drive crawlers 4 drive the towed mining equipment to perform towed collection;

[0038] Step 2, after the water pump 3 is running, the water flow discharged from the outlet of the ore box 1 is collected by the guide device 1-2, and enters the circulation system through the pipeline system 7, and the circulating flow is respectively flowed into the suction and collecting head 6-1 through the diverter 8, and flows into the wall-attached jet nozzle 9-1 through the circulation pipeline to form a high-speed jet. By utilizing the Coanda effect, the high-speed jet adheres to the curved wall to form a low-pressure area, and is combined with the suction and collecting head 6-1 process, so that the mineral particles are easier to be peeled off and efficiently collected, and thus collected into the ore box 1. At the same time, the gathering structure 11-2 at the front end of the mud sled 11 effectively gathers the minerals on both sides during the forward movement of the towed mining equipment, thereby expanding the collection range and significantly improving the efficiency of the collection operation.

[0039] As mentioned above, the towed mining equipment and mining method based on circulating wall jet of the present invention have the following innovations: Innovation 1: Circulating wall jet system: In order to solve the problem that the existing ore collecting device generates a large amount of plumes during operation and causes great disturbance to the seabed environment, the present invention recycles the wastewater discharged during the operation through a pipeline through a circulation system, and guides it to the wall jet nozzle through a diverter to generate a high-speed jet. Utilizing the Coanda effect, the high-speed jet adheres to the curved wall to form a low-pressure area, and is combined with the suction ore collecting head process to make the mineral particles easier to be stripped and efficiently collected. The present invention significantly reduces the disturbance and pollution of the seabed environment, and greatly improves the efficiency of mineral collection. Innovation 2: Mud sled structure design: In order to solve the technical problem that the existing ore collecting device is difficult to adapt to the complex seabed terrain, the present invention designs a mud sled structure. The structure uses a wide flat-bottomed sled as a support, which can effectively reduce the pressure of the mining equipment on the seabed and prevent it from sinking into the soft seabed terrain. The arc-shaped design at the front end of the sled enables the mining equipment to smoothly cross small obstacles and gullies on the seabed, enhancing the terrain adaptability of the equipment. At the same time, the inward-inclined structure of the sled can effectively guide the mineral particles to gather in the direction of the collecting head, thereby improving the efficiency of mineral collection. Innovation point 3: Circulating jet-suction collecting head design: The present invention adopts a flat-mouthed dustpan-shaped collecting head and connects it side by side with bolts to achieve a modular design. This design not only facilitates the rapid replacement and maintenance of the equipment, but also enables the mining equipment to carry out carpet-style large-scale collection operations, significantly improving the flexibility and adaptability of the operation. In addition, the high-speed jet brought by the circulating flow is used to realize the coupled flow field of the jet and suction. This innovative flow field design effectively improves the collection efficiency while reducing energy consumption during the operation.

[0040] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A towed mining equipment based on circulating wall jet, characterized in that: The invention comprises an ore box (1), wherein a balancing shell (2) is installed on the outside of the ore box (1), a carrying platform (5) is connected to the front side of the ore box (1), and a mud sled (11) is arranged at the bottom of the carrying platform (5); a water pump (3) is installed in the ore box (1), the ore box (1) is connected to an ore conveying pipeline (6), a suction port of the water pump (3) is connected to the ore conveying pipeline (6) through the ore box (1), and a suction and ore collecting head (6-1) is connected to the end of the ore conveying pipeline (6); an ejection port of the water pump (3) is connected to a pipeline system (7) through a flow guide (1-2), the pipeline system (7) is connected to a plurality of circulation pipelines (9) through a flow divider (8), and the ends of the plurality of circulation pipelines (9) are all connected to a wall-attached jet nozzle (9-1); the suction and ore collecting head (6-1) and the plurality of circulation pipelines (9) are fixed to the bottom of the front end of the carrying platform (5); The suction ore collecting head (6-1) is a flat-mouthed dustpan-type structure, and the wall-attached jet nozzle (9-1) is arranged toward the arc-shaped bottom (6-2) of the flat-mouthed dustpan-type structure; when the water pump (3) is working, the suction ore collecting head (6-1) uses the flat-mouthed dustpan-type structure to collect the bottom mineral particles, and the wall-attached jet nozzle (9-1) forms a low-pressure area at the arc-shaped bottom (6-2), and couples with the suction flow of the suction ore collecting head (6-1), so that the mineral particles (12) are more easily peeled off, thereby improving the collection rate of the mineral particles; An environmental sensing module (10) is also provided on the top of the front portion of the carrying platform (5). The environmental sensing module (10) uses a neural network to repair the image and intelligently adjusts the power of the water pump (3) according to the distribution of seabed mineral particles, thereby avoiding the idling of the water pump (3) and reducing the energy consumption of the towed mining equipment. The deflector (1-2) is installed at the ore box outlet (1-1) at the tail of the ore box (1). The deflector (1-2) can timely collect wastewater to be discharged and transport it to the diverter (8) through the pipeline system (7), so that the recovered high-speed water flow flows into the wall-attached jet nozzles (9-1) respectively, which not only ensures the efficient recovery of wastewater, but also can guide the recovered high-speed water flow into the wall-attached jet nozzles (9-1) respectively, so as to realize the effective reuse of resources.

2. A towed mining equipment based on circulating wall jet according to claim 1, characterized in that: The bottom of the mud sled (11) is a flat bottom support structure (11-1) for reducing bottom pressure so that the towed mining equipment is not easily sunk into soft soil.

3. A towed mining equipment based on circulating wall jet according to claim 2, characterized in that: A gathering structure (11-2) is provided on one side of the mud sled (11), and the gathering structure (11-2) is an inclined structure; the gathering structure (11-2) is used to cross small obstacles and gullies to improve driving stability; and is also used to gather mineral particles for collection to improve collection efficiency.

4. A towed mining equipment based on circulating wall jet according to claim 3, characterized in that: The mud sled (11) is also provided with a square support body (11-3) for supporting the carrying platform (5).

5. The towed mining equipment based on circulating wall jet according to claim 1 is characterized in that: Two electric drive tracks (4) are connected to both sides of the bottom of the balancing shell (2), and the two electric drive tracks (4) are used to increase the contact area with the seabed, prevent sinking, and achieve stable walking operation.

6. A towed mining equipment based on circulating wall jet according to claim 1, characterized in that: The water pump (3) is a submersible jet pump.

7. A towed mining method based on circulating wall jet, which is realized by the towed mining equipment based on circulating wall jet according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1, after the towed mining equipment arrives at the ore collection operation area, the environment perception module (10) detects the surrounding area, determines the density of the nearby ore particles after image restoration, and adjusts the power of the water pump (3) to a preset area, while the two electric drive crawlers (4) drive the towed mining equipment to perform towed collection; Step 2, after the water pump (3) is operated, the water flow discharged from the outlet of the ore box (1) is collected by the guide device (1-2) and enters the circulation system through the pipeline system (7). The circulating flow is respectively flowed into the suction and collection head (6-1) through the flow divider (8), and flows into the wall-attached jet nozzle (9-1) through the circulation pipeline to form a high-speed jet. By utilizing the Coanda effect, the high-speed jet adheres to the curved wall to form a low-pressure area, and is combined with the suction and collection head (6-1) process, so that the mineral particles are easier to be stripped and efficiently collected, and are collected into the ore box (1). At the same time, the gathering structure (11-2) at the front end of the mud sled (11) effectively gathers the minerals on both sides during the forward movement of the towed mining equipment, thereby expanding the collection range and significantly improving the efficiency of the collection operation.

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