Closed dust falling device for underground mine draw shaft

Abstract

The utility model discloses an underground mine draw shaft airtight dust fall device which comprises a concrete layer, channel steel, a resin anchor rod, a steel plate and a web plate, the concrete layer is poured along the contour line of a draw shaft connection way, one face of the web plate is attached to the surface of the concrete layer, and the channel steel comprises horizontal channel steel and vertical channel steel. The steel plates are arranged between the web and the channel steel, the resin anchor rods are used for firmly fixing the channel steel, the concrete layer and the surrounding rock, plate placing openings are formed between the left steel plate and the right steel plate, the left plate placing opening and the right plate placing opening are formed in the same horizontal axis, and a wood plate is arranged between the left plate placing opening and the right plate placing opening. According to the mine winze, the closed space is constructed, and the multiple interlayers such as wood plates are arranged, so that dust generated in the mine winze is effectively prevented from being diffused, the working environment is remarkably improved, and potential threats to the health of workers are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mine production, in particular to an airtight dust reduction device for an underground mine ore pass. Background Technique

[0002] An ore pass is a channel for discharging ore from top to bottom by its own weight. Due to its advantages such as convenient construction, high ore discharging efficiency, and small maintenance workload, it is widely used in domestic underground mines.

[0003] As an important part of the underground mine ore transportation system, the ore pass is also one of the important dust pollution sources underground. The falling process of ore in the ore pass can be regarded as a piston movement. The falling ore compresses the air in the ore pass and forms an impact air flow, which quickly surges upward from the bottom of the ore pass and raises a large amount of dust. This phenomenon is usually called ore pass dust return. When discharging ore at a certain level, other levels connected to the ore pass will be polluted by dust return, and the diffusion speed is fast and the duration is long, seriously affecting the physical and mental health of nearby operators. In China, measures such as spraying water and airtight plugging are mainly used to prevent and control ore pass dust return. However, the spraying water measure has a small applicable range and is only applicable to ore passes with small ore discharging volume, low frequency, and non-caking of ore when encountering water. Moreover, spraying water is likely to have an adverse impact on the on-site civilized production work; traditional airtight plugging measures include shaft gate type, shaft cover type, shaft cover plate type, etc., but the airtight operation is complex, affects ore discharging and is easily damaged by the falling ore impact, and is not suitable for long-term use. At present, ore pass dust return is still a difficult problem to solve in domestic mines. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above technical problems, and thus provides an airtight dust reduction device for an underground mine ore pass;

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides an airtight dust reduction device for an underground mine ore pass,

[0007] including a concrete layer, channel steels, resin bolts, steel plates, and webs. The concrete layer is poured along the contour line of the ore pass access drift. One side of the web is attached to the surface of the concrete layer. The channel steels include horizontal channel steels and vertical channel steels. The horizontal channel steels are arranged at the upper end of the concrete layer, and the vertical channel steels are arranged on the left and right sides of the concrete layer. The steel plates are arranged between the webs and the channel steels. The resin bolts are used to firmly fix the channel steels to the concrete layer and the surrounding rock. Plate openings are provided between the left and right steel plates, and the left and right plate openings are arranged on the same horizontal axis. A wooden board is arranged between the left and right plate openings.

[0008] Optionally, a plurality of sets of plate placing openings are provided, and the plurality of sets of plate placing openings are evenly spaced from top to bottom in sequence, and the wooden boards are arranged in one-to-one correspondence with the plate placing openings.

[0009] Optionally, a plurality of sets of resin bolts are provided, and the plurality of sets of resin bolts are evenly distributed on the surface of the concrete layer.

[0010] Optionally, the vertical channel steels on the left and right sides are arranged in parallel.

[0011] Optionally, the gap between the horizontal channel steel and the vertical channel steel is set to be less than 10 mm.

[0012] Optionally, the thickness of the steel plate is not less than 5 mm, and the surface of the steel plate is coated with an anti-corrosion coating.

[0013] In summary, the present utility model has the following beneficial effects:

[0014] By constructing a closed space and providing multiple layers of partitions such as wooden boards, the present application effectively blocks the diffusion of dust generated in the mine skip, significantly improves the working environment, and reduces the potential threat to the health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural sectional view of the present utility model.

[0016] Figure 2 It is a structural sectional view of the present utility model in the B-B direction.

[0017] Figure 3 It is a structural sectional view of the present utility model in the C-C direction.

[0018] Description of the reference numerals: 1-concrete layer, 2-channel steel, 3-resin bolt, 4-steel plate, 5-plate placing opening, 6-wooden board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment:

[0021] As Figures 1 - 3 shown, the present utility model provides an underground mine skip closed dust reduction device,

[0022] It includes a concrete layer 1, channel steels 2, resin bolts 3, steel plates 4, and webs. The concrete layer 1 is poured along the contour line of the raise access drift. One side of the web is attached to the surface of the concrete layer 1. The channel steels 2 include horizontal channel steels 2 and vertical channel steels 2. The horizontal channel steels 2 are arranged at the upper end of the concrete layer 1, and the vertical channel steels 2 are arranged on the left and right sides of the concrete layer 1. The steel plates 4 are arranged between the web and the channel steels 2. The resin bolts 3 are used to firmly fix the channel steels 2, the concrete layer 1, and the surrounding rock. Plate openings 5 are formed between the left and right steel plates 4, and the left and right plate openings 5 are arranged on the same horizontal axis. A wooden board 6 is arranged between the left and right plate openings 5.

[0023] The plate openings 5 are arranged in several groups, and the several groups of plate openings 5 are evenly spaced from top to bottom. The wooden boards 6 are arranged in one-to-one correspondence with the plate openings 5. By arranging several groups of plate openings 5 and evenly spacing them from top to bottom, it can ensure that the airtight dust reduction effect of the entire raise is more uniform. The plate openings 5 at different heights can effectively intercept different dust diffusion situations. The one-to-one correspondence between the wooden boards 6 and the plate openings 5 enhances the airtight effect, and at the same time facilitates the installation, replacement, and maintenance of the wooden boards 6. When the wooden boards 6 need to be replaced due to excessive dust accumulation, the corresponding wooden boards 6 can be taken out separately for cleaning or replacement without affecting the airtightness of other parts.

[0024] The resin bolts 3 are arranged in several groups, and the several groups of resin bolts 3 are evenly distributed on the surface of the concrete layer 1. The resin bolts 3 have high strength and excellent anchoring performance. By evenly distributing them on the surface of the concrete layer 1 and firmly fixing the channel steels 2, the concrete layer 1, and the surrounding rock together, it ensures the stability and durability of the entire airtight dust reduction device. The even distribution of the resin bolts 3 also ensures the uniform stress of the entire device, avoiding structural damage caused by local stress concentration.

[0025] The vertical channel steels 2 on the left and right sides are arranged in parallel; the parallel arrangement of the vertical channel steels 2 enhances the lateral stability of the entire device, preventing structural deformation or damage caused by external factors such as wind force and vibration. The parallel vertical channel steels 2 also provide a stable support surface for the installation of the steel plates 4 and the webs, helping to maintain the airtightness of the entire device.

[0026] The gap between the horizontal channel steel 2 and the vertical channel steel 2 is set to be less than 10 mm. By strictly controlling the gap between the horizontal channel steel 2 and the vertical channel steel 2 to be less than 10 mm, the possibility of dust diffusion through the gap can be significantly reduced, thereby enhancing the airtight dust reduction effect of the entire device. The precise control of the gap also reflects the refinement of the design and the high precision of manufacturing of the entire device, helping to improve the overall performance and reliability of the device.

[0027] The thickness of the steel plate 4 is not less than 5 mm, and the surface of the steel plate 4 is coated with an anti-corrosion coating. The thickness of the steel plate 4 not less than 5 mm ensures that it has sufficient strength and stiffness to withstand the impact and vibration generated when the materials in the ore pass fall, extending the service life of the device. The anti-corrosion coating on the surface of the steel plate 4 can effectively prevent the steel plate 4 from rusting or corroding due to long-term exposure to a humid and corrosive environment, further improving the durability and stability of the device.

[0028] This application relates to an airtight dust reduction device for an underground mine ore pass, and its working principle is mainly based on an airtight space and physical barriers to reduce the dust diffusion in the mine ore pass. The specific working steps and principles are as follows:

[0029] Pour the concrete layer 1:

[0030] First, pour the concrete layer 1 along the contour line of the ore pass connecting roadway to form the basic structure of the ore pass.

[0031] Install the web and channel steel 2:

[0032] Next, attach the web to one side of the concrete layer 1. The web plays a role in support and airtightness. Then, install the horizontal channel steel 2 at the upper end of the concrete layer 1 and the vertical channel steel 2 on both the left and right sides. The gap between the channel steels 2 is kept less than 10 mm to ensure the compactness and airtightness of the structure.

[0033] Set the steel plate 4 and resin anchor bolt 3:

[0034] Set the steel plate 4 between the web and the channel steel 2. The thickness of the steel plate 4 is not less than 5 mm, and its surface is coated with an anti-corrosion coating to enhance its corrosion resistance and service life. Use the resin anchor bolt 3 to firmly fix the channel steel 2, the concrete layer 1, and the surrounding rock to ensure the stability and airtightness of the entire structure.

[0035] Open the plate release opening 5 and install the wooden board 6:

[0036] Open the plate release openings 5 on the steel plates 4 on both the left and right sides. The plate release openings 5 are set in several groups and are evenly spaced from top to bottom in sequence. Install the wooden boards 6 between the corresponding plate release openings 5. The wooden boards 6 are set in one-to-one correspondence with the plate release openings 5 to form an airtight partition layer.

[0037] Dust reduction effect:

[0038] When there are materials falling in the mine ore pass, the generated dust will be blocked by the airtight partition layer, thereby reducing the dust diffusion.

[0039] The presence of the wooden board 6 further enhances the airtight effect and at the same time allows for replacement or adjustment when needed.

[0040] In summary, the underground mine shaft airtight dust reduction device of the present application constructs a sealed and stable structure through steps such as pouring the concrete layer 1, installing the web and channel steel 2, setting the steel plate 4 and resin anchor bolts 3, opening the plate outlet 5 and installing the wooden board 6, effectively reducing the dust diffusion in the mine shaft and improving the working environment.

[0041] The present application constructs a sealed space and sets multiple layers of partitions such as the wooden board 6, effectively blocking the dust diffusion generated in the mine shaft, significantly improving the working environment and reducing the potential threat to the health of the staff.

[0042] Dust is a major safety hazard in mine operations, easily triggering explosions or occupational diseases. The dust reduction device of the present application reduces such risks by reducing the dust concentration and enhancing the safety of the workplace.

[0043] The construction of the present application is fast, the effect is quick, and the applicable range is wide, with no special requirements for conditions such as the ore properties, block size, and whether it will be caked by water.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A closed dust suppression device for an underground mine chute, characterized in that: It includes a concrete layer, channel steel, resin anchor rods, steel plates, and webs. The concrete layer is cast along the contour line of the chute connecting channel. One side of the web is in contact with the surface of the concrete layer. The channel steel includes horizontal channel steel and vertical channel steel. The horizontal channel steel is arranged at the upper end of the concrete layer, and the vertical channel steel is arranged on the left and right sides of the concrete layer. The steel plate is arranged between the webs and the channel steel. The resin anchor rods are used to firmly fix the channel steel to the concrete layer and the surrounding rock. Plate placing openings are opened between the left and right steel plates, and the left and right plate placing openings are located on the same horizontal axis. A wooden board is arranged between the left and right plate placing openings.

2. The enclosed dust suppression device for underground mine chute according to claim 1, characterized in that: The board placement openings are arranged in a plurality of groups, and the plurality of groups of board placement openings are arranged in sequence and evenly spaced from top to bottom, and the wooden boards are arranged in a one-to-one correspondence with the board placement openings.

3. The enclosed dust suppression device for underground mine chute according to claim 1, characterized in that: The resin anchor rods are arranged in a plurality of groups, and the plurality of groups of resin anchor rods are evenly distributed on the surface of the concrete layer.

4. The enclosed dust suppression device for underground mine chute according to claim 1, characterized in that: The vertical channel steels on the left and right sides are arranged in parallel.

5. The enclosed dust suppression device for underground mine chute according to claim 1, characterized in that: The gap between the horizontal channel steel and the vertical channel steel is set to be less than 10 mm.

6. The enclosed dust suppression device for underground mine chute according to claim 1, characterized in that: The thickness of the steel plate is not less than 5 mm, and the surface of the steel plate is coated with an anti-corrosion coating.

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