Thin-vein medium-length hole mining transportation method based on mining

Abstract

The invention discloses a thin-vein medium-length hole mining transportation method based on mining, which comprises the following steps of: dividing a vein into a plurality of ore blocks along the vertical direction, excavating roadways along the vein at the tops and the bottoms of the corresponding ore blocks, and constructing roadways outside the vein at the lower sides of the ore blocks, so that the roadways outside the vein are lower than the corresponding roadways along the vein at the lower sides; and a plurality of ore removal through ways are constructed between the along-vein roadway and the outside-vein roadway, and flow guiding devices are installed in the ore removal through ways. The medium-length hole mining method is innovatively provided according to the metallogenic characteristics of the ultra-thin vein, the requirements of mechanical construction and transportation are met, the complex stoping process of an original mining method is improved, ore loss is reduced, and therefore the resource recovery rate is increased, mechanical construction is adopted for mining, transportation and the like, and the mining efficiency is improved. Ore loading can be directly carried out, ore conveying of the ore is facilitated, and therefore the safety risk of multi-person construction in an original mining method is reduced, and meanwhile the investment of the total production investment cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mining, and in particular to a thin-vein medium-deep hole mining and transportation method based on mine exploitation. Background Art

[0002] In the long-term production practice, the mines with thin vein mining have formed a fixed shallow hole chute method and wall cutting and filling mining model. In practical application, the shallow hole chute and wall cutting and filling method can effectively prevent the ground pressure hazards of the mine, and the requirements for equipment are relatively low. The corresponding mining cost is low, the output is large, and it has high economic benefits. However, the mining of thin vein mines is mainly based on the delineation of the veins by the early sparse drilling project, and the veins are exposed by the development of the transportation lane along the vein, and then the veins are controlled along the veins by the vein engineering. The scale and continuity of the ore body are evaluated by the ore-seeking along the veins at the upper and lower middle elevations, which serves as the basis for the layout of the ore body mining project; the mineralization of the ore vein is extremely unstable in the strike and dip, and the ore body is mostly pod-shaped. The ore-seeking in the upper and lower vein engineering and the vein skylight is not enough to serve as the basis for the overall scale and continuity of the ore body. Therefore, there is often great uncertainty in the mining process, resulting in serious problems of ore body depletion and loss in the mining field. At the same time, the mining process of the wall cutting and filling mining method is more complicated during the mining process of the ore blocks. Compared with the medium and deep hole mining method, the mining cycle is longer and the ore extraction process is more complicated.

[0003] With the continuous decrease in mining depth, increase in production costs, imbalance in tertiary mining volume and increased safety risk costs in recent years, the problems that exist and need to be solved are how to effectively and maximize the recovery of resources in the existing mining sites, how to quickly promote mechanized production and reduce labor input costs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a thin-vein medium-deep hole mining and transportation method based on mine exploitation. According to the mineralization characteristics of extremely thin ore veins, an innovative medium-deep hole mining method is proposed, and the requirements of mechanized construction and transportation are met, thereby improving the complex recovery process of the original mining method, reducing ore losses, and thus improving the resource recovery rate. In addition, mechanized construction is used for mining and transportation, etc., and the ore can be directly loaded onto trucks, which facilitates the ore transportation of the ore, thereby reducing the safety risks of multi-person construction in the original mining method, and at the same time reducing the investment in total production investment costs, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a thin vein medium-deep hole mining and transportation method based on mining, comprising the following steps: S1. Divide the ore vein into a number of ore blocks along the vertical direction, and dig the vein tunnels at the top and bottom of the corresponding ore blocks, construct the vein tunnel at the lower side of the ore block, make the vein tunnel lower than the corresponding vein tunnel at the lower side, and then construct a number of mine-outlet tunnels between the vein tunnel and the vein tunnel, and install a diversion device in the mine-outlet tunnel; S2. Use drilling rigs to construct cutting shafts in the middle of the mining area, use drilling rigs to construct parallel medium-depth holes along the veins in the lanes above the ore blocks, and use drilling rigs to construct parallel medium-depth holes along the veins in the lanes below the ore blocks; S3, using the skylight as the cutting groove, using medium-deep hole blasting to form the bottom ore outlet groove, and then performing step-shaped blasting, with the upward hole ahead of the downward hole by one row; S4. Use a shovel loader to shovel ore in the vein tunnel at the lower side of the ore block, and transport the ore to the diversion device in the mine exit tunnel. Through the diversion device, the ore is transported to the transport mine car parked in the vein tunnel, and the ore is transported by the transport mine car.

[0006] As a preferred technical solution of the present invention, the angle between the mine exit tunnel and the horizontal plane ranges from 30° to 45°.

[0007] As a preferred technical solution of the present invention, the guide device includes a main guide plate, a slide groove is slidably arranged at the bottom of the main guide plate, a guide rod is slidably arranged inside the slide groove, a secondary guide plate is installed on the side of the guide rod, a baffle frame is provided at the end of the secondary guide plate away from the guide rod, a door panel is rotatably arranged at the lower end of the baffle frame, an opening and closing cylinder is rotatably arranged on the side of the baffle frame, and the telescopic end of the opening and closing cylinder is rotatably connected to the lower end of the side of the door panel.

[0008] As a preferred technical solution of the present invention, a lifting member is provided at one end of the main guide plate away from the auxiliary guide plate, and the lifting member includes a mounting plate, and two cross-arranged lifting cylinders are rotatably provided on the upper surface of the mounting plate, and the telescopic end of the lifting cylinder is rotatably connected to the bottom of the main guide plate.

[0009] As a preferred technical solution of the present invention, a sleeve is provided on the upper surface of the mounting plate, a screw is movably inserted into the interior of the sleeve, a nut is threadedly connected to the side of the screw, and a shock-absorbing pad is provided on the top of the screw.

[0010] As a preferred technical solution of the present invention, mounting holes are provided on the surface of the mounting plate and the surface of the auxiliary guide plate.

[0011] As a preferred technical solution of the present invention, the upper surface of the auxiliary guide plate and the side surface of the baffle frame are both provided with connecting rings, and a traction rope is connected between the two corresponding connecting rings.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The thin-vein medium-deep hole mining and transportation method based on mine exploitation exemplified in the present invention innovatively proposes a medium-deep hole mining method according to the mineralization characteristics of extremely thin ore veins, and meets the requirements of mechanized construction and transportation, thereby improving the complex recovery process of the original mining method, reducing ore losses, and thus improving the resource recovery rate. In addition, mechanized construction is used for mining and transportation, etc., which can directly load the ore, facilitate the ore transportation, thereby reducing the safety risks of multi-person construction in the original mining method, and at the same time reducing the investment cost of total production. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 for Figure 1 A schematic diagram of the top view of the cross-sectional view; Figure 4 It is a structural schematic diagram of the flow guiding device in the present invention; Figure 5 for Figure 4 Schematic diagram of the partial composition from another perspective.

[0014] In the figure: 1 along the vein tunnel, 2 vein outer tunnel, 3 mine passage, 4 main guide plate, 5 chute, 6 auxiliary guide plate, 61 guide rod, 62 baffle frame, 63 opening and closing cylinder, 64 door plate, 7 mounting plate, 71 lifting cylinder, 8 sleeve, 81 screw rod, 82 nut, 83 shock-absorbing pad. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-5 The present invention provides a technical solution: a thin-vein medium-deep hole mining and transportation method based on mining, comprising the following steps: S1, dividing the ore vein into a number of ore blocks along the vertical direction, and digging the vein tunnel 1 at the top and bottom of the corresponding ore block, constructing the vein outer tunnel 2 at the lower side of the ore block, making the vein outer tunnel 2 lower than the corresponding vein tunnel 1 at the lower side, and then constructing a number of ore-exit tunnels 3 between the vein tunnel 1 and the vein outer tunnel 2, and installing a diversion device in the ore-exit tunnel 3; S2. Use a drilling rig to construct a cutting shaft in the middle of the mining area, use a drilling rig to construct parallel medium-depth holes along the vein in the vein lane 1 above the ore block, and use a drilling rig to construct parallel medium-depth holes along the vein in the vein lane 1 below the ore block; S3, using the skylight as the cutting groove, using medium-deep hole blasting to form the bottom ore outlet groove, and then performing step-shaped blasting, with the upward hole ahead of the downward hole by one row; S4. Use a shovel loader to shovel ore in the vein tunnel 1 on the lower side of the ore block, and transport the ore to the diversion device in the mine outlet tunnel 3. Through the diversion device, the ore is transported to the transport mine car parked in the vein tunnel 2, and the ore is transported by the transport mine car.

[0017] Furthermore, the angle between the ore exit passage 3 and the horizontal plane is in the range of 30°-45°, so that the ore unloaded by the transport vehicle can automatically slide downward on the guide device.

[0018] Furthermore, the guide device includes a main guide plate 4, a slide groove 5 is slidably set at the bottom of the main guide plate 4, a guide rod 61 is slidably set inside the slide groove 5, a secondary guide plate 6 is installed on the side of the guide rod 61, and a baffle frame 62 is provided at the end of the secondary guide plate 6 away from the guide rod 61, a door panel 64 is rotatably set at the lower end of the baffle frame 62, an opening and closing cylinder 63 is rotatably set on the side of the baffle frame 62, and the telescopic end of the opening and closing cylinder 63 is rotatably connected to the lower end of the side of the door panel 64.

[0019] Furthermore, a lifting member is provided at one end of the main guide plate 4 away from the auxiliary guide plate 6, and the lifting member includes a mounting plate 7. Two cross-arranged lifting cylinders 71 are rotatably provided on the upper surface of the mounting plate 7, and the telescopic ends of the lifting cylinders 71 are rotatably connected to the bottom of the main guide plate 4. The shovel loader transports the ore to the guide device, and the ore slides downward along the main guide plate 4 and the auxiliary guide plate 6, and is blocked by the baffle frame 62 and the door panel 64, opening the opening and closing cylinder 63, and causing the ore to fall onto the transport vehicle parked in the outer vein tunnel 2, without the need for additional loading operations.

[0020] Furthermore, a sleeve 8 is provided on the upper surface of the mounting plate 7, a screw 81 is movably inserted inside the sleeve 8, a nut 82 is threadedly connected to the side of the screw 81, and a shock-absorbing pad 83 is provided on the top of the screw 81. The nut 82 is rotated to adjust the extension length of the screw 81, so that the shock-absorbing pad 83 supports the main guide plate 4 to prevent the lifting cylinder 71 from being subjected to excessive impact force.

[0021] Furthermore, mounting holes are provided on the surface of the mounting plate 7 and the surface of the auxiliary guide plate 6, and anchor rods are installed in the mine passage 3, and the mounting holes are aligned with the anchor rods for fixing.

[0022] Furthermore, the upper surface of the auxiliary guide plate 6 and the side surface of the baffle frame 62 are both provided with connecting rings, and a traction rope is connected between the two corresponding connecting rings to improve the stability of the baffle frame 62.

[0023] According to the mineralization characteristics of extremely thin ore veins, the present invention innovatively proposes a medium-deep hole mining method and meets the requirements of mechanized construction and transportation, thereby improving the complicated recovery process of the original mining method, reducing ore loss, and thus improving the resource recovery rate. In addition, mechanized construction is used for mining and transportation, etc., which can directly load the ore and facilitate the ore transportation, thereby reducing the safety risks of the original mining method involving multiple personnel in construction, and at the same time reducing the investment cost of total production.

[0024] The undisclosed parts in the present invention are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A thin-vein medium-deep hole mining and transportation method based on mining, characterized in that: The following steps are involved: S1, dividing the ore vein into a plurality of ore blocks along the vertical direction, and digging a vein tunnel (1) at the top and bottom of the corresponding ore block, constructing an outer vein tunnel (2) at the lower side of the ore block, so that the outer vein tunnel (2) is lower than the corresponding vein tunnel (1) at the lower side, and then constructing a plurality of ore-exit tunnels (3) between the vein tunnel (1) and the outer vein tunnel (2), and installing a diversion device in the ore-exit tunnel (3); S2. A drilling rig is used to construct a cutting shaft in the middle of the mining area, and a drilling rig is used to construct parallel medium-depth holes along the vein in the laneway (1) above the ore block, and a drilling rig is used to construct parallel medium-depth holes along the vein in the laneway (1) below the ore block; S3, using the skylight as the cutting groove, using medium-deep hole blasting to form the bottom ore outlet groove, and then performing step-shaped blasting, with the upward hole ahead of the downward hole by one row; S4. A shovel loader is used to shovel ore in the vein tunnel (1) at the lower side of the ore block, and the ore is transported to the diversion device in the mine outlet tunnel (3). The ore is transported to the transport mine car parked in the vein tunnel (2) through the diversion device, and the ore is transported by the transport mine car.

2. The thin-vein medium-deep hole mining and transportation method based on mine exploitation according to claim 1 is characterized by: The angle between the ore exit tunnel (3) and the horizontal plane is in the range of 30°-45°.

3. The thin-vein medium-deep hole mining and transportation method based on mine exploitation according to claim 1 is characterized by: The guide device comprises a main guide plate (4), a slide groove (5) is slidably provided at the bottom of the main guide plate (4), a guide rod (61) is slidably provided inside the slide groove (5), a secondary guide plate (6) is installed on the side of the guide rod (61), a baffle frame (62) is provided at one end of the secondary guide plate (6) away from the guide rod (61), a door plate (64) is rotatably provided at the lower end of the baffle frame (62), an opening and closing cylinder (63) is rotatably provided on the side of the baffle frame (62), and a telescopic end of the opening and closing cylinder (63) is rotatably connected to the lower end of the side of the door plate (64).

4. The thin-vein medium-deep hole mining and transportation method based on mine exploitation according to claim 3 is characterized by: A lifting member is provided at one end of the main deflector plate (4) away from the auxiliary deflector plate (6), the lifting member comprising a mounting plate (7), two cross-arranged lifting cylinders (71) being rotatably provided on the upper surface of the mounting plate (7), and telescopic ends of the lifting cylinders (71) are rotatably connected to the bottom of the main deflector plate (4).

5. The thin-vein medium-deep hole mining and transportation method based on mine exploitation according to claim 4 is characterized by: A sleeve (8) is provided on the upper surface of the mounting plate (7), a screw rod (81) is movably inserted into the interior of the sleeve (8), a nut (82) is threadedly connected to the side of the screw rod (81), and a shock-absorbing pad (83) is provided on the top of the screw rod (81).

6. The thin-vein medium-deep hole mining and transportation method based on mine exploitation according to claim 4 is characterized by: The surface of the mounting plate (7) and the surface of the auxiliary guide plate (6) are both provided with mounting holes.

7. The thin-vein medium-deep hole mining and transportation method based on mine exploitation according to claim 3 is characterized by: The upper surface of the auxiliary guide plate (6) and the side surface of the baffle frame (62) are both provided with connecting rings, and a traction rope is connected between the two corresponding connecting rings.

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