A stope structure and mining method for steeply inclined and very thin vein mechanized mining

Abstract

This invention provides a stope structure and mining method for mechanized mining of steeply inclined, extremely thin veins. The stope is long and utilizes rock-drilling robots and multi-functional robots for shoveling and leveling within the stope for mechanized operations. A loader is used for ore extraction, enabling coordinated operations of drilling, leveling, and blasting in different zones. This significantly improves the level of mining mechanization and the overall production capacity of the stope, while reducing ore loss. Simultaneously, the workforce is optimized from 6-10 people to 3-4 people. All operations are remotely controlled, reducing worker labor intensity while greatly improving stope safety and operational efficiency. This truly realizes a technological transformation from traditional manual mining to mechanized, safe, and efficient mining of steeply inclined veins. The minimum stope width is 1.2m, suitable for mining steeply inclined, extremely thin veins with low dilution rates.

Description

Technical Field

[0001] This invention belongs to the field of underground mineral deposit mining, specifically relating to a stope structure and mining method for mechanized mining of steeply inclined, extremely thin veins. Background Technology

[0002] Currently, the occurrence of steeply dipping thin veins is extremely complex, with their thickness and dip angle varying randomly along the dip direction. The main mining methods include shallow-hole stopeing, backfilling, and sublevel open-cut mining. Traditional shallow-hole stopeing and backfilling methods suffer from low mechanization, high labor intensity, high safety risks, low stope production capacity, and high overall operating costs. While sublevel open-cut mining can utilize mechanized drilling, it still faces significant challenges, such as large cutting workloads and difficulty in adapting borehole layout to the ore body's occurrence, leading to extremely high dilution and loss rates.

[0003] With rapid economic development, the demand for various energy sources continues to rise. Steeply dipping, extremely thin veins constitute a significant portion of domestic non-ferrous and rare-precious mineral resources. Due to their thickness (less than 0.8m) and varying occurrence conditions, mining them is extremely difficult. For steeply dipping, extremely thin veins, the widely used mining method is shallow-hole ore-stopping. However, in addition to the aforementioned problems of low mechanization, high labor intensity, high safety risks, low stope production capacity, and high overall operating costs, mining extremely thin veins also presents challenges such as excessively large mining widths, high ore dilution rates, large waste rock transportation volumes, and low personnel efficiency. Therefore, for a long time, the mechanized and efficient mining of steeply dipping, extremely thin veins has not been truly achieved, becoming a major bottleneck restricting the high-quality development of mining enterprises. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a stope structure and mining method for mechanized mining of steeply inclined, extremely thin veins. This method enables mechanized operations such as rock drilling, roughening, leveling, crushing large blocks, and ore extraction in steeply inclined, extremely thin vein stopes, greatly reducing the labor intensity of workers and improving production efficiency and safety.

[0005] To achieve the above objectives, this invention provides a stope structure for a steeply dipping, extremely thin vein. The underground ore body to be mined is divided into several intermediate sections, and several stopes are further divided along the strike of the ore body within these intermediate sections. A top pillar is arranged at the top of each stope, and inter-stop pillars are installed between the stopes. A ventilation shaft is arranged in the inter-stop pillars at both ends of each stope. The ventilation shaft is connected to the ore body via several stope connecting passages. An ore extraction roadway along the vein and a cross-vein transport roadway are arranged in the footwall of the ore body. Both ends of the ore extraction roadway are connected to the bottom of the ventilation shafts on both sides of the stope. The ore-exit roadway along the vein is arranged with several ore-exit routes towards the ore body. The end of each ore-exit route reaches the ore body. A bottom-pulling horizontal roadway is arranged along the ore body from the ore-exit route at the end of the mining area. The bottom-pulling horizontal roadway is connected to the end of each ore-exit route. A central return air shaft is arranged in the center of the bottom-pulling horizontal roadway towards the ore body. The central return air shaft passes through the top pillar and is connected to the upper and middle section bottom-pulling horizontal roadway and the upper and middle section ore-exit routes. A chamber is arranged vertically on the hanging wall of the ore body at the center of the bottom-pulling horizontal roadway. The bottom plate of the chamber is connected to the end of the ore-exit route at the center.

[0006] The height of the middle section is 30-60m, the height of the stope is consistent with that of the middle section, the length is 50-150m, the width of the stope is not less than 1.2m, the width of the inter-pillar is 6-8m, the vertical height of the top pillar is 2-3m, and the interval between the stope connecting passages is 4-6m.

[0007] Because mechanized mining is highly efficient and shortens the mining cycle, the length of the mining area can be appropriately increased based on the occurrence of the ore body along the strike to avoid frequent equipment relocation.

[0008] The ore exits are spaced 6-10m apart and are all at an angle of 45°-70° to the ore exit roadways along the vein. The central return air shaft has a cross-sectional diameter of 2.0m and contains a ladder room, serving as a return air passage and safety exit for the mining area.

[0009] The chamber is rectangular, with a length of 3.5m to 4.0m, a width of 1.5m to 2.5m, and a height of 2.0m to 2.5m. It is used for the rock drilling robot and the multi-functional robot for prying and leveling in the mining area to pass each other, turn around, and perform maintenance. The chamber is used in conjunction with the layered mining to maintain structural parameters, and the ore is discharged through the connected ore outlet to keep the bottom plate of the chamber flat.

[0010] Based on the same inventive concept, the present invention also provides a mechanized mining method for steeply inclined, extremely thin veins, comprising the following steps:

[0011] S1, using the stope structure described above, forms a mining working face;

[0012] S2, Layout of mining equipment: Each stope is equipped with one rock drilling robot, one barbed and leveling multi-functional robot, and several trackless mechanized mining equipment; the rock drilling robot is equipped with a front-mounted rock drilling structure; the trackless mechanized mining equipment is arranged in the vein transport roadway and the vein mining roadway of the ore body chassis;

[0013] The rock drilling robot and the multi-functional rock-scraping and leveling robot were purchased from Hunan Chuangyuan High-tech Machinery Co., Ltd. The equipment is 0.8m wide, 1.4m high and 3.2m long, and is electrically driven and remotely operated.

[0014] S3, mining area recovery:

[0015] S3.1, Rock Drilling: The rock drilling robot enters the bottom level roadway from the first ore exit roadway at either end of the stope and moves backward to the other end for mining; the rock drilling robot drills upward blast holes. When mining back to the other end, there are 3-4m of ore body remaining at the rear end that cannot be drilled. At this time, the rock drilling robot is controlled to move to the chamber to turn around, reverse the front rock drilling structure, drive out of the chamber, and complete the mining of the remaining ore body at the end;

[0016] S3.2, Clearing: The clearing and leveling multi-functional robot enters the bottom leveling tunnel from the same ore exit route in step S3.1, and moves in the same direction as the rock drilling robot to clear loose rocks and loose stones from the top of the mining area;

[0017] S3.3, Loading and blasting: Explosives are loaded manually. Before blasting, rock drilling robots and prying and leveling robots are moved to a distance of 20m from the blasting point to avoid blasting. Cotton quilts or foam boards are used for shielding and protection.

[0018] S3.4, Localized ore discharge: Trackless mechanized equipment is used for ore discharge. One-third of the mined ore is discharged evenly from each ore discharge route. The ore is then loaded onto ore cars using a loader and transported out along the cross-vein transport roadway.

[0019] S3.5, Top Tilt and Leveling: Using a multi-functional robot for tiling and leveling, the robot cleans the loose rocks and stones on the top of the mining area and levels the surface of the ore piles on the bottom of the mining area, facilitating safe and efficient passage of the robot.

[0020] S3.6, Layered Cyclic Operation: Starting from the final mining end in S3.1, the operation begins. S3.1 to S3.5 are repeated, mining from bottom to top until the top pillar of the stope is reached, and mining ends. The rock drilling robot and the multi-functional robot for prying and leveling are moved to the central return air shaft and hoisted out of the stope.

[0021] S3.7, Large-scale mining: Concentrated large-scale mining; residual ore piles between mining routes after large-scale mining are recovered and transported out using remote-controlled scrapers.

[0022] S4, Goaf treatment: Lay filling pipes along the central return air shaft and the pedestrian ventilation shaft to enter the goaf, and use tailings cemented backfill.

[0023] Furthermore, in step S3.1, the depth of the blast holes is 1.8~2.0m, the diameter is 42~45mm, and the blast holes are arranged in a plum blossom shape or a zigzag shape.

[0024] Furthermore, the specific operation of the layered mining in step S3.6 is as follows: After the rock drilling robot completes rock drilling on one side with the chamber as the boundary, it moves to the chamber and performs the first ore extraction and mining in layers. Then, the multi-functional robot for roughing and leveling moves to the end of that side to roughen and level the surface. The rock drilling robot then drives out of the chamber and continues the rock drilling operation on the other side. At this time, the rock drilling robot and the multi-functional robot for roughing and leveling exchange positions, advance in coordination, and operate in parallel.

[0025] Furthermore, the mining method is particularly suitable for the mechanized mining of steeply dipping, extremely thin veins with a dip angle of 70° or more and a thickness of 0.4m or more.

[0026] Compared with the existing technology, the beneficial effect of this invention is that it truly realizes the technological transformation of steeply inclined veins from traditional manual operation to mechanized, safe and efficient mining.

[0027] (1) The use of rock drilling robots and multi-functional robots for shoveling and leveling in the mining area for mechanized operations, along with the use of shovels to remove ore, greatly improves the level of mining mechanization and reduces the labor intensity and safety risks of workers.

[0028] (2) The mining robot does not leave the mining area during the entire mining cycle. A chamber is set up in the center of the mining area to facilitate equipment turning around, passing, and maintenance, thereby improving equipment utilization efficiency.

[0029] (3) The long mining area allows for coordinated operations such as drilling, leveling, and blasting, increasing the comprehensive production capacity of the mining area from 50-70 t / d to 120-150 t / d;

[0030] (4) No pillars are left in the stope, reducing the ore loss rate from 12%~15% to 4%~5%;

[0031] (5) The number of workers in each mining area is reduced from 6-10 to 3-4;

[0032] (6) Remote control equipment is used for rock drilling, roughing and leveling in the mining area, which greatly improves the safety and efficiency of the mining area.

[0033] Instruction manual illustrations

[0034] Figure 1 This is a front view schematic diagram of one embodiment of the present invention.

[0035] Figure 2 for Figure 1 Diagram showing the direction of BB in the middle.

[0036] Figure 3 for Figure 1 Diagram of the CC direction.

[0037] Figure 4 This is a schematic diagram of a mining area in one embodiment of the present invention, showing the mining process from the right side retreating back to the left end.

[0038] Figure 5 This is a schematic diagram of a mining robot turning around and passing another vehicle in a chamber, according to one embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of a rock-drilling robot completing rock drilling of the remaining ore body on the left side after turning around in one embodiment of the present invention.

[0040] Figure 7 This is a schematic diagram illustrating the exchange of positions between a rock drilling robot and a multi-functional robot for roughing and leveling at the upper working face in one embodiment of the present invention, allowing them to continue their work.

[0041] In the diagram: 1-Ore extraction roadway along the vein; 2-Ore extraction access road; 3-Pull-down level roadway; 4-Cavity; 5-Personnel ventilation shaft; 6-Central return air shaft; 7-Rock drilling robot; 8-Scrapping and leveling multi-functional robot; 9-Shovel loader; 10-Mine car; 11-Through-vein transport roadway; 12-Mining connection roadway; 13-Interstitial pillar; 14-Roof pillar. Detailed Implementation

[0042] The present invention will be described in detail below with reference to embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. For ease of description, the words "upper," "lower," "left," and "right" appearing below only indicate that they are consistent with the upper, lower, left, and right directions of the drawings themselves, and do not limit the structure.

[0043] Example 1

[0044] In this embodiment, a mine in Yunnan Province, with an average ore body thickness of 0.5m and a dip angle of 82°, is a typical steeply dipping, extremely thin vein. A mechanized mining method for steeply dipping, extremely thin veins provided by this invention was used for trial mining operations. (Reference) Figures 1 to 7 The mining site structure and mining method in this embodiment include the following steps:

[0045] The first step is to divide the mining area: the underground ore body to be mined is divided into several intermediate sections from top to bottom, with each intermediate section having a height of 50m; according to the strike of the ore body, several mining areas are divided in the intermediate sections, with each mining area having a length of 100m and a height of 50m. A 6m wide inter-pillar 13 is left between adjacent mining areas, and a 3m high top pillar 14 is left at the top of the mining area, without leaving a bottom pillar; to control the dilution rate to be no more than 60%, the mining area width is 1.2m;

[0046] The second step is the layout of the mining preparation and cutting project: a pedestrian ventilation shaft 5 is arranged in the pillar 13 at both ends of the mining area, and a mining area connecting roadway 12 is excavated every 4m along the pedestrian ventilation shaft towards the mining area; a cross-vein transport roadway 11 and a ore extraction roadway 1 are arranged 6m outside the footwall of the ore body, and several ore extraction routes 2 are excavated from the ore extraction roadway 1 towards the ore body. The end of the ore extraction route 2 reaches the ore body and forms a 45° angle with the ore extraction roadway 1. The distance between adjacent ore extraction routes 2 is 8m.

[0047] From the ore exit 2 at the far end of the mining area, a bottom-pulling tunnel 3 is excavated along the ore body direction to the other end. The bottom-pulling tunnel 3 is connected to the end of each ore exit 2. At the center of the bottom-pulling tunnel 3, a central return air shaft 6 is excavated from bottom to top along the ore body floor. The top of the central return air shaft 6 passes through the top pillar 14 and is connected to the upper and middle section bottom-pulling tunnel and the upper and middle section ore exit. The central return air shaft 6 has a cross-sectional diameter of 2.0m and is equipped with a ladder room, which serves as the mining area return air passage and safety exit.

[0048] In the hanging wall of the ore body at the center of the bottom level roadway 3, a rectangular chamber 4 is vertically excavated. The chamber 4 is 4.0m long, 2.0m wide, and 2.0m high. It is used for the rock drilling robot 7 and the multi-functional robot 8 for passing, turning around, and maintenance in the mining operation. At the same time, the structural parameters of the chamber are kept unchanged during the mining operation.

[0049] The third step is the arrangement of mining equipment: Each stope is equipped with one rock drilling robot 7 (0.8m wide, 1.4m high, and 3.2m long) and one multi-functional rock drilling and leveling robot 8. Both are existing products on the market and can be electrically driven and remotely operated. The rock drilling robot 7 is equipped with a front-mounted rock drilling structure. Several trackless mechanized mining equipment are arranged in the vein transport roadway 11 and the vein mining roadway 1 in the ore body chassis.

[0050] Step 4, mining in the stope:

[0051] 4.1 Rock Drilling: The rock drilling robot 7 enters the bottom runoff 3 from the first ore access road 2 at either end of the stope and moves backward to the other end for mining; the rock drilling robot 7 drills upward blast holes with a depth of 2.0m and a diameter of 42mm, arranged in a quincunx pattern; when the rock drilling robot 7 returns to the other end of the bottom runoff 3, the remaining 3-4m of ore body at the rear cannot be drilled, such as... Figure 4 As shown, at this time, the rock drilling robot 7 is moved to the chamber 4, turns around, reverses the drilling structure, and exits the chamber 4 to complete the mining of the remaining ore body at the end. Figure 6 As shown; the chamber 4 is mined synchronously with the mining area in layers, and the ore is discharged through the connected ore outlet 2 to keep the bottom plate of the chamber flat.

[0052] 4.2, Clearing: The clearing and leveling multi-functional robot 8 enters the bottom leveling tunnel 3 from the same ore exit 2 in step S3.1, and moves in the same direction as the rock drilling robot 7 to clear loose rocks and loose stones from the top of the mining area;

[0053] The rock drilling robot 7 and the multi-functional rock drilling and leveling robot 8 move in the same direction. The rock drilling robot 7 is in front and the multi-functional rock drilling and leveling robot 8 is behind. The two work in parallel without affecting each other, which improves work efficiency.

[0054] 4.3, Loading and blasting: Explosives are loaded manually. Before blasting, the rock drilling robot 7 is moved to a distance of 20m from the blasting point to avoid the blast. To prevent damage to the equipment from flying rocks and shock waves, cotton quilts or foam boards are used for shielding and protection.

[0055] 4.4 Localized ore discharge: Trackless mechanized equipment is used for ore discharge. Each ore discharge route 2 ensures that 1 / 3 of the mined ore is discharged and the surface of the ore pile is made as flat as possible. The discharged ore is loaded into ore cars 10 by a loader 9 and transported out along the cross-vein transport roadway 11.

[0056] 4.5, Prying and Leveling: The multi-functional robot 8 for prying and leveling cleans the loose rocks and stones on the roof of the mining area and levels the uneven surface of the ore pile after ore discharge, so as to facilitate the safe and efficient passage of the robot.

[0057] 4.6 Layered Cyclic Operation: The operation begins with the final mining end in S3.1 as the starting point for the next layer of mining, as follows: Figure 7 As shown, after completing rock drilling on one side with chamber 4 as the boundary, the robot moves to chamber 4 and performs the first ore extraction and ore removal in layers. Then, the multi-functional robot 8, which performs roughening and leveling, moves to the end of that side to perform roughening and leveling. The rock drilling robot 7 then exits chamber 4 and continues rock drilling on the other side. At this time, the rock drilling robot 7 and the multi-functional robot 8... Figure 5 As shown, the positions are swapped, coordinated, and parallel operations are carried out.

[0058] Repeat steps 4.1 to 4.5, mining from bottom to top until reaching the top pillar 14 of the stope, then end the mining; control the rock drilling robot 7 and the multi-functional rock breaking and leveling robot 8 to move to the central return air shaft 6, and hoist them out of the stope;

[0059] 4.7, Large-scale mining: Concentrate on large-scale mining. After large-scale mining, the remaining triangular ore pile between mining entrances 2 will be recovered and transported out using a remote-controlled loader 9.

[0060] Step 5, goaf treatment: Lay filling pipes along the central return air shaft 6 and the pedestrian ventilation shaft 5 into the goaf, and use tailings with a 1:15 lime-sand ratio for cemented filling.

[0061] In this embodiment, the comprehensive production capacity of the mining area can reach 140t / d, with a dilution rate of 60% and a loss rate of 5%, and a workforce of 3 people is required for mining operations. By controlling the minimum mining width of 1.2m, the dilution rate of extremely thin vein ore can be controlled within 60%. Waste rock mixed in is pre-treated by the surface waste disposal system before entering the ore beneficiation process, thereby reducing ore beneficiation costs and tailings production.

[0062] Comparative Example 1

[0063] In a mine in Yunnan Province, the ore body has an average thickness of 0.5m and a dip angle of 82°, belonging to a typical steeply dipping, extremely thin vein. The traditional manual shallow-hole forging method is being used, specifically including the following steps:

[0064] The first step is to divide the mining area: the underground ore body to be mined is divided into several intermediate sections from top to bottom, with each intermediate section having a height of 50m; according to the strike of the ore body, several mining areas are divided in the intermediate sections, with each mining area having a length of 50m and a height of 50m. A 3m high top pillar is left at the top of the mining area, a 6m high bottom pillar is left at the bottom, and a 6m wide inter-pillar is left between adjacent mining areas. The mining area width is 1.2m.

[0065] The second step is the layout of the mining and cutting project: the specifications and parameters of the transport roadway, the pedestrian ventilation shaft, and the connecting roadway of the pedestrian ventilation shaft in the middle section of the mining area are the same as those in Example 1. At the bottom, a ore-releasing wooden funnel is designed every 8m along the transport roadway, and the funnel is close to the footwall of the ore body.

[0066] The third step is mining in the stope: this includes steps such as rock drilling, blasting, local ore extraction, roof clearing and leveling, and large-scale ore extraction. The mining operation uses a YT-28 handheld pneumatic rock drill for rock drilling. After the ore is extracted, it is manually transported and leveled. The surface is manually roughened using a chisel. The ore is discharged through the gate of the ore discharge wooden funnel to the mine car and then exited through the intermediate transport roadway.

[0067] The comprehensive production capacity of the mining area is about 50 tons per day, the ore loss rate is 12%, and the number of workers in the mining area is 8.

[0068] As can be seen from Comparative Example 1 and Example 1, the mechanized mining method for steeply inclined, extremely thin veins provided by the present invention greatly improves the level of mining mechanization, the comprehensive production capacity of the mining site, and the operational efficiency, while effectively reducing ore loss rate, labor costs, worker labor intensity, and safety risks.

[0069] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

Claims

1. A mechanized mining method for steeply dipping, extremely thin ore veins, characterized in that, Includes the following steps: S1 adopts a stope structure to form a mining face; The mining structure divides the underground ore body to be mined into several sections, and divides several mining areas along the strike of the ore body into several sections. A top pillar (14) is arranged on the top of each mining area, and inter-mining pillars (13) are set between the mining areas. A ventilation shaft (5) is arranged in the inter-mining pillars (13) at both ends of the mining area. The ventilation shaft (5) is connected to the ore body through several mining area connecting roads (12). A vein-side ore extraction roadway (1) and a vein-crossing transport roadway (11) are arranged in the footwall of the ore body. The two ends of the vein-side ore extraction roadway (1) are connected to the bottom ends of the ventilation shafts (5) on both sides of the mining area. The vein-side ore extraction roadway (1) is arranged with several exit points towards the ore body. The mining access road (2) ends at the ore body. A bottom-pull roadway (3) is arranged along the ore body from the end of the mining access roadway (2). The bottom-pull roadway (3) is connected to the end of each mining access roadway (2). A central return air shaft (6) is arranged in the middle of the bottom-pull roadway (3) towards the ore body. The central return air shaft (6) passes through the top column (14) and is connected to the upper and middle section bottom-pull roadway (3) and the upper and middle section mining access roadway (2). The feature is that a chamber (4) is arranged vertically on the hanging wall of the ore body at the center of the bottom-pull roadway (3). The bottom plate of the chamber (4) is connected to the end of the mining access roadway (2) at the center. S2, Layout of mining equipment: Each mining area is equipped with one rock drilling robot (7), one prying and leveling multi-functional robot (8), and several trackless mechanized mining equipment; S3, mining area recovery: S3.1, Rock Drilling: The rock drilling robot (7) enters the bottom level roadway (3) from the first ore exit roadway (2) at either end of the mining area, moves backward to the other end for mining, drills shallow holes, and drills upward blast holes; when mining back to the other end, the remaining 3-4m of ore body at the rear end cannot be drilled. At this time, the rock drilling robot (7) is controlled to move to the chamber (4) to turn around, reverse the front rock drilling structure, drive out of the chamber (4), and complete the mining of the remaining ore body at the end; S3.2, prying: The prying and leveling multi-functional robot (8) enters the bottom leveling tunnel (3) from the same ore exit route (2) in step S3.1, and moves in the same direction as the rock drilling robot (7) to clear the loose rocks and loose stones from the top of the mining area; S3.3, Loading and blasting: Explosives are loaded manually. Before blasting, the rock drilling robot (7) and the prying and leveling multi-functional robot (8) are moved to a distance of 20m from the blasting point to avoid blasting. S3.4, Localized ore discharge: Trackless mechanized equipment is used for ore discharge. Each ore discharge route (2) discharges 1 / 3 of the mined ore evenly, and uses a remote-controlled loader (9) to load it into a ore car (10) and transport it out along the cross-vein transport roadway (11); S3.5, Top skidding and leveling: Use the skidding and leveling multi-functional robot (8) to clean the loose rocks and loose stones on the top plate of the mining area and level the surface of the ore pile on the bottom plate of the mining area. S3.6, Layered Cyclic Operation: Starting from the final mining end in S3.1, begin the operation and repeat S3.1 to S3.5, mining from bottom to top until reaching the top pillar (14) of the mining area, and then end the mining; control the rock drilling robot (7) and the prying and leveling multi-functional robot (8) to move to the central return air shaft (6) and hoist them out of the mining area; S3.7, Mass mining: Mass mining is carried out in a concentrated manner. The remaining ore pile between the mining entrance (2) after mass mining is carried out is recovered and transported out by a remote-controlled shovel (9). S4, Goaf treatment: Lay filling pipes along the central return air shaft (6) and the pedestrian ventilation shaft (5) to enter the goaf, and use tailings cemented filling.

2. The mechanized mining method for steeply dipping, extremely thin veins according to claim 1, characterized in that, In step S3.1, the depth of the blast holes is 1.8~2.0m, the diameter is 42~45mm, and the blast holes are arranged in a plum blossom shape or a zigzag shape.

3. The mechanized mining method for steeply dipping, extremely thin veins according to claim 1, characterized in that, The specific operation of step S3.6 layered mining is as follows: After the rock drilling robot (7) completes rock drilling on one side with the chamber (4) as the boundary, it moves to the chamber (4) and performs the first ore extraction and mining in layers. Then, the multi-functional robot (8) for roughing and leveling moves to the end of that side to roughen and level the surface. The rock drilling robot (7) then drives out of the chamber (4) and continues the rock drilling operation on the other side. At this time, the rock drilling robot (7) and the multi-functional robot (8) for roughing and leveling exchange positions, advance in coordination, and operate in parallel.

4. The mechanized mining method for steeply dipping, extremely thin veins according to claim 1, characterized in that, The height of the middle section is 30-60m, the height of the mining area is consistent with that of the middle section, the length is 50-150m, the width of the mining area is not less than 1.2m, the width of the inter-pillar (13) is 6-8m, the vertical height of the top pillar (14) is 2-3m, and the interval between the mining area connecting roads (12) is 4-6m.

5. The mechanized mining method for steeply dipping, extremely thin veins according to claim 1, characterized in that, The ore exit routes (2) are spaced 6-10m apart and are all at an angle of 45°-70° to the ore exit roadway (1) along the vein. The cross-sectional diameter of the central return air shaft (6) is 2.0m.

6. The mechanized mining method for steeply dipping, extremely thin veins according to claim 1, characterized in that, The chamber (4) is a rectangular chamber with a length of 3.5m to 4.0m, a width of 1.5m to 2.5m, and a height of 2.0m to 2.5m.

7. The mechanized mining method for steeply dipping, extremely thin veins according to claim 1, characterized in that, The chamber (4) is mined in conjunction with the layered mining to maintain structural parameters, and the bottom plate of the chamber is kept flat by releasing ore through the connected ore outlet (2).

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