Underground coal mine outburst prevention and prediction combined device

Abstract

The utility model discloses a coal mine underground outburst prevention prediction combined device which comprises an outer box body and an inner box body, the upper portion and the lower portion of the outer box body are open, the inner box body is connected into the outer box body in an up-down sliding mode, vertical springs are arranged on the outer walls of the left side and the right side of the inner box body and connected with the inner walls of the left side and the right side of the outer box body, and a bottom cover plate is movably arranged at a bottom opening of the inner box body. A vertical open groove is formed in the front side of the outer box body, scales are arranged on the surface of the outer side of the open groove, and the scales indicate the weight of pulverized coal in the inner box body through the sinkage of the inner box body. According to the coal mine outburst prevention prediction device, the purposes of reducing working procedures, reducing personnel, improving efficiency and strengthening personal safety protection are achieved for coal mine outburst prevention prediction work, powerful guarantee is provided for underground coal mine safety production, and scientificity and operability of coal mine outburst prevention prediction are improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine outburst prediction drilling construction technology, and in particular to a coal mine underground outburst prediction combination device. Background Technology

[0002] Coal and gas outbursts are an extremely complex dynamic phenomenon in coal mining. Due to their suddenness and lack of complete predictability, they pose a serious threat to safe coal mine production. The occurrence of this disaster is determined by numerous factors, including ground stress, high-pressure gas, coal structure and properties, geological formation, coal thickness variations, coal body structure, and surrounding rock characteristics. Therefore, the prediction and prevention of coal and gas outbursts are of paramount importance.

[0003] Currently, the process of predicting coal mine outbursts at underground working faces is complex, and the large number of workers at the working face during the drilling of anti-outburst boreholes greatly increases safety hazards. Therefore, this utility model proposes a combined device for predicting coal mine outbursts. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mine underground anti-outburst prediction combination device to solve the above-mentioned technical problems.

[0005] This utility model adopts the following technical solution: a coal mine underground anti-outburst prediction combination device, including an outer box and an inner box. The upper and lower parts of the outer box are open. The inner box is slidably connected to the outer box. Vertical springs are set on the left and right outer walls of the inner box and connected to the left and right inner walls of the outer box. A bottom cover plate is movably set at the bottom of the inner box. A vertical slot is provided on the front side of the outer box. The outer surface of the slot is marked with a scale. The scale indicates the weight of coal powder in the inner box by the amount of sinking of the inner box.

[0006] Furthermore, guide plates are installed on the upper part of the inner walls on the left and right sides of the outer casing. The front and rear ends of the guide plates are connected to the inner walls on the front and rear sides of the outer casing. The upper end of the guide plate is connected to the upper edge of the inner wall of the outer casing, and the lower end of the guide plate extends to the upper edge of the inner casing.

[0007] Furthermore, an upper mounting plate is provided below the guide plate on the outer casing, and the upper end of the spring is connected to the lower end of the upper mounting plate. Lower mounting plates are provided on the lower left and right sides of the outer wall of the inner casing, and the lower end of the spring is connected to the upper end of the lower mounting plate.

[0008] Furthermore, the rear side of the bottom cover is hinged to the bottom opening of the inner box, and the front side of the bottom cover is provided with a buckle for fixing it to the front side of the inner box.

[0009] Furthermore, a support column is provided on the lower part of the rear outer wall of the outer casing, and connecting ears are provided on the upper part of the left and right outer walls of the outer casing.

[0010] This utility model has the following beneficial effects:

[0011] 1. It can reduce procedures and improve prediction efficiency. Traditional coal dust prediction procedures are cumbersome, requiring frequent coal dust collection during drilling, which affects the continuity of construction. This device integrates coal dust collection and measurement functions to achieve automatic coal dust collection and weight detection, reducing manual intervention and operation steps, and improving the efficiency of coal dust prediction.

[0012] 2. Reduced personnel requirements and improved safety: Traditional methods require dedicated personnel to be stationed at the borehole for coal dust collection, increasing the number of workers and leading to dense personnel operations at the working face, posing significant safety hazards. This device uses automatic coal dust collection, eliminating the need for workers to approach the borehole, significantly reducing the number of workers at the working face, lowering the risk of accidents, and improving operational safety.

[0013] 3. Improves prediction accuracy and reduces human error. Since coal and gas outburst prediction relies on the quality and quantity of coal powder samples, traditional manual sampling methods are easily affected by human factors, leading to significant data errors. This device, through a sliding inner chamber and spring structure, achieves automatic measurement of coal powder weight, eliminating the uncertainty of manual sampling and improving the accuracy of prediction data.

[0014] 4. Simple operation and improved construction efficiency: This device, with its sliding inner box structure and scale markings indicating the weight of coal powder, avoids the hassle of manually changing the sampling device every meter of drilling, allowing construction personnel to sample after completing a 10-meter borehole. This greatly reduces the frequency of device movement and improves construction efficiency.

[0015] 5. Enhanced personal safety protection: The automated coal dust collection process eliminates the need for prolonged contact with the borehole area, avoiding occupational health risks associated with coal dust exposure. Furthermore, the stable structure of the device effectively prevents coal dust leakage, improving the working environment and further protecting the health and safety of construction workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is a side view of the present invention;

[0020] Figure 5 yes Figure 4 Sectional view along line AA;

[0021] Figure 6 This is a schematic diagram illustrating the use of this utility model.

[0022] In the diagram: 1. Outer housing; 11. Slot; 12. Scale; 13. Guide plate; 14. Upper mounting plate; 15. Support column; 16. Connecting lug; 2. Inner housing; 21. Bottom cover plate; 22. Lower mounting plate; 23. Buckle; 3. Spring; 4. Netting; 5. Drill rod. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a coal mine underground outburst prevention prediction combination device.

[0024] like Figures 1-5 As shown, a coal mine underground outburst prevention prediction combination device includes an outer box 1 and an inner box 2. The outer box 1 is open at both the top and bottom. The inner box 2 is slidably connected to the outer box 1. Vertical springs 3 are provided on the left and right outer walls of the inner box 2 and connected to the left and right inner walls of the outer box 1. A bottom cover plate 21 is movably provided at the bottom opening of the inner box 2. A vertical slot 11 is provided on the front side of the outer box 1. The outer surface of the slot 11 is provided with a scale 12. The scale 12 indicates the weight of coal powder in the inner box 2 by the amount of sinking of the inner box 2.

[0025] In this embodiment, guide plates 13 are provided on the upper part of the inner walls on the left and right sides of the outer casing 1. The front and rear ends of the guide plates 13 are connected to the inner walls on the front and rear sides of the outer casing 1. The upper end of the guide plates 13 is connected to the upper edge of the inner wall of the outer casing 1, and the lower end of the guide plates 13 extends to the upper edge of the inner casing 2, which plays a guiding role for the coal powder falling from both sides.

[0026] The outer housing 1 has an upper mounting plate 14 below the guide plate 13, and the upper end of the spring 3 is connected to the lower end of the upper mounting plate 14. The lower sides of the outer wall of the inner housing 2 have lower mounting plates 22, and the lower end of the spring 3 is connected to the upper end of the lower mounting plate 22.

[0027] In this embodiment, a support column 15 is provided on the lower part of the rear outer wall of the outer casing 1, and connecting ears 16 are provided on the upper part of the left and right outer walls of the outer casing 1 for connecting with the front hanging net 4. The rear side of the bottom cover plate 21 is hinged to the bottom opening of the inner casing 2, and a buckle 23 is provided on the front side of the bottom cover plate 21 for fixing to the front side of the inner casing 2.

[0028] like Figure 6As shown, taking the construction of a 10-meter prediction borehole as an example, a hanging net 4 is set at the face of the borehole during prediction. During the construction of the anti-outburst prediction borehole, the construction personnel fix the anti-outburst prediction combination device directly below the construction borehole, with the upper edge close to the coal wall. The connecting lug 16 is hung on the hanging net 4 with two iron wires. There is a support column 15 in the middle of the lower part of the outer box 1, which is hung to form a certain angle. The construction personnel leave the vicinity of the borehole and start the anti-outburst prediction borehole construction. When the drill rod 5 drills 1 meter, the drilling is stopped, and the coal dust falls into the inner box 2. The inner box 2 sinks under the weight of the coal dust. The weight of the coal dust can be determined by the scale 12 on the outer box 1. The weight of the coal dust is recorded, the buckle 23 at the bottom of the inner box 2 is fastened, the coal dust is discharged, the buckle 23 is closed, and the drilling continues. The previous step is repeated until the construction of a 10-meter borehole is completed.

[0029] The anti-outburst prediction combination device of this utility model eliminates the need for dedicated personnel to collect coal dust, reducing procedures and manpower, and improving accuracy. When the drill rod is drilling, there is no need for dedicated personnel to collect coal dust at the borehole opening, and workers can stay away from the borehole opening, eliminating potential safety hazards and ensuring safe production. The prediction combination device is only removed after 10 meters of construction of a borehole is completed, eliminating the need to move it every meter, thus improving work efficiency.

[0030] This utility model's anti-outburst prediction combination device, through integrated design, solves the problems of cumbersome procedures, dense personnel, low prediction accuracy, and inadequate individual protection in the anti-outburst prediction process. It enables coal mine anti-outburst prediction work to achieve the goals of reducing procedures, reducing personnel and increasing efficiency, and strengthening personal safety protection, providing a strong guarantee for underground coal mine safety production and improving the scientificity and operability of coal mine anti-outburst prediction.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A coal mine underground outburst prevention prediction combination device, characterized in that: The outer box (1) and the inner box (2) are included. The upper and lower parts of the outer box (1) are open. The inner box (2) is slidably connected to the outer box (1). The left and right outer walls of the inner box (2) are provided with vertical springs (3) that are connected to the left and right inner walls of the outer box (1). The bottom opening of the inner box (2) is movably provided with a bottom cover plate (21). The front side of the outer box (1) is provided with a vertical slot (11). The outer surface of the slot (11) is provided with a scale (12). The scale (12) indicates the weight of the coal powder in the inner box (2) by the amount of sinking of the inner box (2).

2. The coal mine underground outburst prevention prediction combination device according to claim 1, characterized in that: Guide plates (13) are provided on the upper part of the inner walls on the left and right sides of the outer box (1). The front and rear ends of the guide plates (13) are connected to the inner walls on the front and rear sides of the outer box (1). The upper end of the guide plates (13) is connected to the upper edge of the inner wall of the outer box (1), and the lower end of the guide plates (13) extends to the upper edge of the inner box (2).

3. The coal mine underground outburst prevention prediction combination device according to claim 2, characterized in that: The outer housing (1) has an upper mounting plate (14) below the guide plate (13), and the upper end of the spring (3) is connected to the lower end of the upper mounting plate (14). The inner housing (2) has a lower mounting plate (22) on the lower left and right sides of the outer wall, and the lower end of the spring (3) is connected to the upper end of the lower mounting plate (22).

4. The coal mine underground outburst prevention prediction combination device according to claim 1, characterized in that: The rear side of the bottom cover plate (21) is hinged to the bottom opening of the inner box (2), and the front side of the bottom cover plate (21) is provided with a buckle (23) for fixing to the front side of the inner box (2).

5. The coal mine underground outburst prevention prediction combination device according to claim 2, characterized in that: A support column (15) is provided on the lower part of the rear outer wall of the outer box (1), and connecting ears (16) are provided on the upper part of the left and right outer walls of the outer box (1).

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