Coal mine underground coal bunker bottom structure and use method

Abstract

The application discloses a coal mine underground coal bunker bottom structure, which comprises a bunker bottom foundation reinforced pouring structure arranged at the bottom of the coal bunker, a modular telescopic adjustable device arranged in the bottom foundation reinforced pouring structure, the modular telescopic adjustable device comprising a telescopic rod with one end fixedly hinged to the bottom of the coal bunker, a coal unloading bunker hingedly arranged at the other end of the telescopic rod and facing the coal outlet, the coal unloading bunker comprising an inner layer bunker body connected with the telescopic rod and an outer layer bunker body slidably connected with the inner layer bunker body, the outer layer bunker body being fixedly connected with the coal feeder at the bottom of the coal bunker, a power piece for controlling the telescopic rod to telescopically move being hingedly arranged on the outer layer bunker body of the coal unloading bunker, and a plurality of drain holes being symmetrically arranged about the horizontal axis of the coal outlet at the positions of the two side walls close to the coal outlet of the bottom foundation reinforced pouring structure. The modular telescopic adjustable device and the drain holes are arranged, the jammed coal body and the accumulated water at the coal outlet are lifted by controlling the movement of the inner layer bunker body, and the problems of jamming and water bursting are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of coal mining equipment technology, and in particular to a coal bunker bottom structure and its usage method in underground coal mines. Background Technology

[0002] As a key component of underground coal mine production, coal bunkers play a crucial role in ensuring coal product quality, mitigating imbalances in production, transportation, and sales, and guaranteeing continuous and stable mine production. However, coal bunkers have long service cycles. With the rapid development of domestic mines and changes in geological conditions, problems such as coal bunker blockage and collapse have arisen, becoming bottlenecks hindering further capacity increases. Therefore, resolving coal bunker blockage and collapse issues has become a major challenge in ensuring safe mine production. Developing safe, simple, and efficient methods and facilities for clearing and unblocking coal bunkers is particularly important for mines with a single-mine-one-face production structure. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] To achieve the above objectives, this invention proposes a coal bunker bottom structure in underground coal mines, including a reinforced cast-in-place foundation structure at the bottom of the coal bunker. The reinforced cast-in-place foundation structure contains a funnel-shaped coal-falling cavity. A coal outlet is located at the bottom end of the reinforced cast-in-place foundation structure. A modular telescopic adjustable device is installed within the coal-falling cavity. The modular telescopic adjustable device includes a telescopic rod with one end fixedly hinged to the bottom of the coal bunker. A coal unloading chamber is hinged to the other end of the telescopic rod facing the coal outlet. The coal unloading chamber includes an inner chamber body connected to the telescopic rod and an outer chamber body slidably connected to the inner chamber body. The outer chamber body is fixedly connected to a coal feeder at the bottom of the coal bunker. A power component for controlling the telescopic rod's telescopic movement is hinged to the outer chamber body. Multiple drainage holes are symmetrically arranged about the horizontal axis of the coal outlet on both sides of the reinforced cast-in-place foundation structure near the coal outlet.

[0005] This invention, by setting up a modular, retractable, and adjustable device and a drain hole, can control the movement of the inner and outer chambers to lift the blocked coal and accumulated water at the coal outlet, drain the accumulated water through the drain hole, and lift the blocked coal upwards, thus loosening the blockage and solving the blockage problem.

[0006] Optionally, multiple drainage holes on each side are arranged side by side in a horizontal direction.

[0007] Furthermore, each of the drainage holes is connected to a drainage pipe, which is connected to the outside of the reinforced cast-in-place structure of the silo bottom foundation.

[0008] Furthermore, the foundation reinforcement casting structure of the silo bottom includes main reinforcement on the side close to the coal chute and inner reinforcement away from the coal chute. Multiple connecting bars are fixedly connected between the inner reinforcement and the main reinforcement, and a casting layer is provided on the outside of the main reinforcement and the inner reinforcement.

[0009] Furthermore, the vertical angle of the sidewall of the reinforced cast-in-place foundation structure is not less than 60°.

[0010] Furthermore, multiple sets of crushing devices are symmetrically arranged on the inner wall of the coal outlet, and clearance grooves are provided on both the inner and outer bins to cooperate with the crushing devices.

[0011] Furthermore, the telescopic rod includes a fixed section that is fixedly connected to the bottom of the coal bunker and a telescopic section that is hinged to the inner bunker body. The power component includes a first power component and a second power component. The first power component is hinged to the telescopic section, and the second power component is hinged to the fixed section.

[0012] Furthermore, a camera is installed in the coal outlet.

[0013] This invention also provides a method for using the bottom structure of an underground coal bunker in a coal mine, comprising the following steps:

[0014] After the coal bunker is excavated and poured, the foundation reinforcement of the bunker bottom is poured. Modular telescopic adjustable devices are installed on the bottom of the coal bunker and the foundation reinforcement of the bunker bottom. A coal unloading bunker is set up in the coal outlet and a crushing device is arranged at the coal outlet.

[0015] When a blockage occurs in the coal outlet, the staff controls the crushing device to crush large pieces of coal.

[0016] When there is water accumulation at the bottom of the coal unloading bunker, the water can be drained from the drain hole by controlling the raising and lowering of the modular telescopic device.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic cross-sectional view of the overall structure of the bottom structure of an underground coal bunker according to the present invention;

[0020] Figure 2This is a schematic diagram of the cross-section of the reinforced cast-in-place structure of the bottom foundation of an underground coal bunker according to the present invention;

[0021] Figure 3 This is a schematic diagram of a modular telescopic adjustable device for the bottom structure of an underground coal bunker and a coal unloading bunker according to the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Reinforced concrete foundation of the silo; 2. Modular telescopic adjustable device; 3. Drain pipe; 4. Coal unloading silo; 5. Crushing device; 6. Main reinforcement; 7. Internal reinforcement; 8. Connecting reinforcement; 9. First hinge point; 10. Telescopic surface of the modular telescopic adjustable device; 11. First power component; 12. Inner silo body; 13. Outer silo body; 14. Second power component; 15. Second hinge point; 16. Third hinge point. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] This invention provides a coal bunker bottom structure in underground coal mines, as described below. Figures 1 to 3 To elaborate in detail.

[0026] A coal bunker bottom structure in an underground coal mine includes a reinforced cast-in-place foundation structure at the bottom of the bunker. The reinforced cast-in-place foundation structure has a funnel-shaped coal discharge cavity. A coal outlet is located at the bottom end of the reinforced cast-in-place foundation structure 1. A modular telescopic adjustable device 2 is installed within the coal discharge cavity. The modular telescopic adjustable device includes a telescopic rod with one end fixedly hinged to the bottom of the coal bunker, the hinge position being as shown... Figure 3 The first hinge point 9 shown is connected to the coal unloading bunker 4 at the other end of the telescopic rod, which is hinged towards the coal outlet. The hinge position is as follows: Figure 3 The second hinge point 15 shown indicates that the coal unloading bunker 4 includes an inner bunker body 12 connected to the telescopic rod and an outer bunker body 13 slidably connected to the inner bunker body 12. The outer bunker body 13 is fixedly connected to the coal feeder at the bottom of the coal bunker. A power component for controlling the telescopic rod to extend and retract is hinged on the outer bunker body of the coal unloading bunker 4. Multiple drainage holes are symmetrically arranged about the horizontal axis of the coal outlet at the positions of the reinforced cast-in-place structure of the bunker bottom foundation near the two side walls of the coal outlet.

[0027] This invention, by setting up a modular, retractable, and adjustable device and a drain hole, can control the movement of the inner chamber 12 and the outer chamber 13 to lift the blocked coal and accumulated water at the coal outlet, drain the accumulated water from the drain hole, and lift the blocked coal block upwards, thereby loosening the blocked position and solving the blocking problem.

[0028] In some embodiments, to facilitate the drainage of accumulated water, multiple drainage holes on each side are arranged side by side in a horizontal direction. The side-by-side arrangement of drainage holes allows water to be quickly discharged from multiple drainage holes once the water level reaches the height of the drainage holes.

[0029] In some embodiments, each drainage hole is connected to a drainage pipe 3, which is connected to the exterior of the reinforced cast-in-place structure of the coal bunker foundation. The drainage pipe 3 facilitates the drainage of water from the coal bunker area, thereby preventing the drained water from accumulating again below the coal bunker.

[0030] In some embodiments, the reinforced cast-in-place structure of the silo foundation includes main reinforcement 6 located near the coal chute and inner reinforcing reinforcement 7 located away from the coal chute. Multiple connecting bars 8 are fixedly connected between the inner reinforcing reinforcement 7 and the main reinforcement 6, and a cast-in-place layer is provided on the outer side of both the main reinforcement 6 and the inner reinforcing reinforcement 7. The main reinforcement 6 and the inner reinforcing reinforcement 7 provide a steel reinforcement frame structure for the silo foundation reinforced cast-in-place structure, making the structure more robust after casting.

[0031] In some embodiments, the vertical angle of the sidewall of the reinforced cast-in-place foundation is not less than 60°. This avoids the problem of coal sticking to the sidewall of the coal chute due to moisture and being unable to fall after entering the chute, and ensures that most of the gravitational force on the coal is directed towards the outlet along the inclined plane, allowing the coal to fall directly and smoothly towards the outlet.

[0032] In some embodiments, multiple sets of crushing devices 5 are symmetrically arranged on the inner wall of the coal outlet, and the multiple sets of crushing devices 5 are arranged at the same horizontal height. Both the inner layer 12 and the outer layer 13 are provided with clearance grooves to cooperate with the crushing devices 5. The crushing devices 5 can facilitate the crushing of large coal blocks stuck at the coal outlet. After crushing, the inner layer 12 is raised and lowered by a modular telescopic adjustment device. By moving the inner layer 12 up and down, the crushed coal blocks are moved, and the blockage problem is solved after the crushed coal blocks move. When the inner layer 12 descends again, the coal can fall smoothly again.

[0033] In some embodiments, the telescopic rod includes a fixed section fixedly connected to the bottom of the coal bunker and a telescopic section hinged to the inner bunker body 12. The power components include a first power component 11 and a second power component 14. The first power component 11 is hinged to the telescopic section, and the second power component 14 is hinged to the fixed section. The hinge point between the second power component 14 and the outer bunker body 13 of the coal unloading bunker 4 is as follows: Figure 3 The third hinge point 16 shown, along with the common arrangement of the first power component 11 and the second power component 14, facilitates the load-bearing and lifting of the coal unloading bunker 4. This prevents excessive coal falling into the bunker 4, which could lead to excessive weight, or excessively tight blockages that could prevent a single power component from providing sufficient lifting power. Both the first power component 11 and the second power component 14 are telescopic hydraulic cylinders.

[0034] In some embodiments, a camera is installed in the coal outlet. The camera is a high-definition camera, used by operators to monitor for blockages at the coal outlet and to select the appropriate handling method based on the blockage situation.

[0035] This application also provides a method for using the bottom structure of an underground coal bunker in a coal mine, including the following steps:

[0036] After the coal bunker is excavated and poured, the bottom foundation reinforcement pouring structure is poured. Modular telescopic adjustable device 2 is installed on the bottom of the coal bunker and the bottom foundation reinforcement pouring structure 1. A coal unloading bunker 4 is set in the coal outlet and a crushing device 5 is arranged at the coal outlet.

[0037] Through camera observation, when a blockage occurs in the coal outlet, the staff controls the crushing device 5 to crush large pieces of coal.

[0038] By observing through a camera, when there is water accumulation at the bottom of the coal unloading bunker 4, the water can be discharged from the drain hole by controlling the raising and lowering of the modular telescopic device.

[0039] The reinforced cast-in-place structure of the coal bunker bottom foundation is constructed on the basis of the cast-in-place structure after the coal bunker excavation is completed. First, the bottom foundation casting device is constructed, then the modular telescopic adjustable device 2 is installed, and finally the coal unloading bunker 4 is installed.

[0040] Methods for handling coal mine blockages and water accumulation: High-definition cameras at the coal bunker opening monitor and analyze that the main cause of blockage is large pieces of coal or other reasons. The built-in crushing device 5 at the unloading port breaks up large pieces of coal. For water accumulation at the bottom of the coal bunker, the modular telescopic device allows the water to drain through the drainage holes. For long-term accumulation leading to internal caking and blockage, the size of the coal bunker opening can be adjusted, or the modular telescopic device can be used to move the unloading bunker 4 up and down to resolve the blockage. For large pieces of coal blocking the bunker, the crushing device 5 breaks them up, and then the modular telescopic device moves the unloading bunker 4 up and down to resolve the blockage.

[0041] Furthermore, during the construction process, the construction method is designed and constructed simultaneously with the coal bunker design, forming an integrated whole. This enables remote monitoring and control by personnel, ensuring the safety of workers. The construction method incorporates high-strength and highly reliable internal structures, which can meet the service life of the coal bunker. It has good promotional and application value in solving various problems currently existing in coal bunkers.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coal bunker bottom structure in an underground coal mine, characterized in that, The structure includes a reinforced cast-in-place foundation at the bottom of the coal bunker. The foundation contains a funnel-shaped coal-feeding cavity and a coal outlet at its bottom. A modular telescopic adjustable device is installed within the coal-feeding cavity. This device includes a telescopic rod with one end fixedly hinged to the bottom of the coal bunker, and a coal unloading chamber hinged to the other end of the telescopic rod facing the coal outlet. The unloading chamber includes an inner chamber connected to the telescopic rod and an outer chamber slidably connected to the inner chamber. The outer chamber is fixedly connected to a coal feeder at the bottom of the coal bunker. A power component for controlling the telescopic rod's extension and retraction is hinged to the outer chamber. Multiple drainage holes are symmetrically arranged about the horizontal axis of the coal outlet on both sides of the foundation near the outlet.

2. The coal bunker bottom structure in an underground coal mine as described in claim 1, characterized in that, Multiple drainage holes on each side are arranged side by side in a horizontal direction.

3. The coal bunker bottom structure in an underground coal mine as described in claim 2, characterized in that, Each of the drainage holes is connected to a drainage pipe, which is connected to the outside of the reinforced cast-in-place structure of the silo bottom foundation.

4. The coal bunker bottom structure in an underground coal mine as described in claim 1, characterized in that, The foundation reinforcement casting structure of the silo bottom includes main reinforcement on the side close to the coal chute and inner reinforcement away from the coal chute. Multiple connecting bars are fixedly connected between the inner reinforcement and the main reinforcement, and a casting layer is provided on the outside of the main reinforcement and the inner reinforcement.

5. The coal bunker bottom structure in an underground coal mine as described in claim 4, characterized in that, The vertical angle of the sidewall of the reinforced cast-in-place foundation structure shall not be less than 60°.

6. The coal bunker bottom structure in an underground coal mine as described in claim 1, characterized in that, Multiple sets of crushing devices are symmetrically arranged on the inner wall of the coal outlet, and clearance grooves are provided on both the inner and outer bins to cooperate with the crushing devices.

7. The coal bunker bottom structure in an underground coal mine as described in claim 1, characterized in that, The telescopic rod includes a fixed section that is fixedly connected to the bottom of the coal bunker and a telescopic section that is hinged to the inner bunker body. The power component includes a first power component and a second power component. The first power component is hinged to the telescopic section, and the second power component is hinged to the fixed section.

8. The coal bunker bottom structure in an underground coal mine as described in claim 1, characterized in that, A camera is installed in the coal outlet.

9. A method of using the coal mine underground coal bunker bottom structure as described in any one of claims 1 to 8, characterized in that, Includes the following steps: After the coal bunker is excavated and poured, the foundation reinforcement of the bunker bottom is poured. Modular telescopic adjustable devices are installed on the bottom of the coal bunker and the foundation reinforcement of the bunker bottom. A coal unloading bunker is set up in the coal outlet and a crushing device is arranged at the coal outlet. When a blockage occurs in the coal outlet, the staff controls the crushing device to crush large pieces of coal. When there is water accumulation at the bottom of the coal unloading bunker, the water can be drained from the drain hole by controlling the raising and lowering of the modular telescopic device.

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