Mine shaft deformation monitoring device based on laser point cloud scanning

Abstract

The utility model discloses a mine shaft deformation monitoring device based on laser point cloud scanning, which comprises a shaft and a roadway which are communicated with each other, a cage which moves up and down along with a wellhead winch is arranged on a track in the shaft, and a three-dimensional laser scanner which is electrically connected with wellhead data terminal equipment is arranged at the top of the cage. A ventilation device for quickly eliminating moisture in the shaft before detection of the three-dimensional laser scanner is arranged at the joint of the shaft and the roadway. Before measurement, the ventilation device is operated to move the fan to the center of the shaft to quickly remove moisture in the shaft, so that the influence on three-dimensional laser scanning is reduced; and subsequently, the three-dimensional laser scanner moves up and down along with the cage to carry out detection scanning, so that the deformation and condition of the shaft can be obtained, and the straightness and deformation parameters of the vertical shaft cage guide are calculated. According to the measurement, the workload of manual participation is greatly reduced, the maintenance time is shortened, the lifting time of a mine is increased, the cost is saved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mine surveying, specifically to a mine shaft deformation monitoring device based on laser point cloud scanning. Background Technology

[0002] With the increase in hoisting capacity and mining depth in large mines, mine pressure also increases, making the shaft and guide beams prone to damage, deformation, and even rupture. Therefore, regular safety inspections of the shaft and guide beams are becoming increasingly important. Current shaft deformation measurement mainly relies on personnel conducting observations and inspections from both above and below the shaft. This method is not only time-consuming but also has poor accuracy. Furthermore, field inspections and surveys are labor-intensive, leaving limited time for hoisting and reducing the technical level and competitiveness of coal mine safety production. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a mine shaft deformation monitoring device based on laser point cloud scanning.

[0004] This utility model is achieved through the following technical solution:

[0005] A mine shaft deformation monitoring device based on laser point cloud scanning includes interconnected shafts and roadways. A cage that moves up and down with a hoist at the shaft opening is installed on a track inside the shaft. A three-dimensional laser scanner that is electrically connected to a data terminal device at the shaft opening is installed on the top of the cage. A ventilation device that quickly eliminates moisture in the shaft before the three-dimensional laser scanner detects the moisture is installed at the connection between the shaft and the roadway.

[0006] Further optionally, the ventilation device includes a slide rail installed on the roof of the tunnel, a slide frame installed inside the slide rail, a fan fixed in the center of the slide frame, and an electric push rod installed at the end of the slide frame to push the slide frame out and lock it into the corresponding limiting support frame so that the fan is directly facing the shaft.

[0007] Alternatively, the slide rail and the limiting support frame can be installed on the tunnel roof on both sides of the shaft.

[0008] Further optionally, the ventilation device may also include a monitoring and activation system, which includes a controller electrically connected to the electric actuator, the fan, and a humidity sensor installed inside the shaft.

[0009] Alternatively, electric air dampers are installed at both ends of the intersection of the roadway and the shaft. The electric air dampers are electrically connected to the controller, and the controller is electrically connected to the start switch installed at the top of the shaft opening.

[0010] Compared with existing technologies, the advantages of this invention are as follows: Before measurement, the ventilation device is moved forward to the center of the shaft to quickly remove internal moisture, reducing the impact on the 3D laser scanning. Subsequently, the 3D laser scanner moves up and down with the cage to perform detection and scanning, obtaining the deformation and condition of the shaft, and calculating the straightness and deformation parameters of the vertical shaft cage passage. This measurement method significantly reduces the amount of manual labor, shortens maintenance time, increases mine hoisting time, saves costs, and improves work efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the start-up of this practical ventilation device;

[0013] Figure 3 This is a schematic diagram of the connection of the slide rail and carriage in this practical book;

[0014] In the diagram: 1. Shaft; 2. Tunnel; 3. Cage; 4. Winch; 5. 3D laser scanner; 6. Data terminal equipment; 7. Humidity sensor; 8. Slide rail; 9. Carriage; 10. Fan; 11. Electric push rod; 12. Electric damper; 13. Controller; 14. Limit support frame; 15. Start switch. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0016] like Figure 1 , 2 As shown in Figure 3, a mine shaft deformation monitoring device based on laser point cloud scanning includes a shaft 1 and a roadway 2 that are interconnected. A cage 3 is installed on a track inside the shaft 1 and moves up and down with a hoist 4 at the shaft opening. A three-dimensional laser scanner 5, which is electrically connected to a data terminal device 6 at the shaft opening, is installed on the top of the cage 3. A ventilation device is installed at the junction of the shaft 1 and the roadway 2 to quickly remove moisture from the shaft 1 before the three-dimensional laser scanner 5 detects the moisture. The use of the ventilation device can quickly remove moisture from the shaft 1 and reduce the influence of moisture on the error of laser scanning.

[0017] like Figure 1 , 3 As shown, the ventilation device includes a slide rail 8 installed on the top of the tunnel 2, a slide frame 9 is provided in the slide rail 8, and a fan 10 is fixed in the center of the slide frame 9. An electric push rod 11 installed at the end of the slide frame 9 pushes the slide frame 9 out and locks the fan 10 in the center of the corresponding limiting support frame 14 so that it faces the shaft 1. The electric push rod 11 moves the slide frame 9 with the fan 10 installed to the center of the shaft 1 to eliminate the moisture in the shaft 1 as quickly as possible.

[0018] like Figure 1 As shown, the slide rail 8 and the limiting support frame 14 are respectively installed on the roof of the tunnel 2 on both sides of the shaft 1.

[0019] like Figure 1 As shown, the ventilation device also includes a monitoring and activation system, which includes a controller 13. The controller 13 is electrically connected to the electric push rod 11, the fan 10, and the humidity sensor 7 installed inside the shaft 1.

[0020] like Figure 1 As shown, electric dampers 12 are installed at both ends of the intersection of tunnel 2 and shaft 1. The electric dampers 12 are electrically connected to controller 13. Controller 13 is electrically connected to start switch 15 installed at the top of shaft 1. Operation is performed through start switch 15 at shaft 1 to achieve rapid dehumidification.

[0021] The implementation principle of a mine shaft deformation monitoring device based on laser point cloud scanning in this application embodiment is as follows:

[0022] During measurement, the 3D laser scanner 5 is fixed to the top of the cage 3 and connected to the data terminal equipment 6 at the wellhead of the shaft 1. Before the measurement and scanning, the water vapor inside the shaft 1 needs to be removed to reduce the impact of water vapor on the 3D laser scanner measurement. Before the measurement, the operator presses the start switch 15 at the wellhead of the shaft 1 to start the controller 13. The controller detects the moisture in the shaft 1 through the humidity sensor 7. When the detected humidity value is greater than 35%, the controller 13 controls the closing of the electric air doors 12 on both sides of the roadway 2 and starts the electric push rod 11 to push the slide 9 into the limit support frame 14 for support (e.g., Figure 2 (As shown), then the fan 10 is started to ventilate the inside of the shaft 1 to reduce humidity and moisture. When the humidity is appropriately reduced to 15%, the controller 13 controls the fan 10 to turn off, and the electric push rod 11 moves in the opposite direction to retract the slide 9. This makes dehumidification more direct and faster.

[0023] After removing moisture from the inside of shaft 1, the winch 4 and data terminal equipment 6 are started. The cage 3, carrying the 3D laser scanner 5, descends to scan the internal coordinates of shaft 1, acquiring massive amounts of point cloud data. This data is processed in real time by the data terminal equipment 6. By comparing with the previous measurement data, the deformation and condition of shaft 1 can be obtained, and the straightness and deformation parameters of the vertical shaft guideway can be calculated. This measurement method greatly reduces the workload of manual labor, shortens maintenance time, increases mine hoisting time, saves costs, and improves work efficiency.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mine shaft deformation monitoring device based on laser point cloud scanning, comprising a shaft (1) and a roadway (2) connected to each other, wherein a cage (3) is installed on a track inside the shaft (1) and moves up and down with a hoist (4) at the shaft opening, characterized in that: The top of the cage (3) is equipped with a three-dimensional laser scanner (5) that is electrically connected to the wellhead data terminal equipment (6). A ventilation device is provided at the junction of the shaft (1) and the roadway (2) to quickly eliminate moisture in the shaft (1) before the three-dimensional laser scanner (5) detects it.

2. The mine shaft deformation monitoring device based on laser point cloud scanning according to claim 1, characterized in that: The ventilation device includes a slide rail (8) installed on the top plate of the roadway (2), a slide frame (9) is provided in the slide rail (8), a fan (10) is fixed in the center of the slide frame (9), and an electric push rod (11) installed at the end of the slide frame (9) pushes the slide frame (9) out and locks the fan (10) in the center of the corresponding limiting support frame (14) so ​​that it faces the shaft (1).

3. The mine shaft deformation monitoring device based on laser point cloud scanning according to claim 2, characterized in that: The slide rail (8) and the limiting support frame (14) are respectively installed on the top plate of the roadway (2) on both sides of the shaft (1).

4. A mine shaft deformation monitoring device based on laser point cloud scanning according to claim 2, characterized in that: The ventilation device also includes a monitoring and activation system, which includes a controller (13) that is electrically connected to an electric push rod (11), a fan (10), and a humidity sensor (7) installed inside the shaft (1).

5. A mine shaft deformation monitoring device based on laser point cloud scanning according to claim 4, characterized in that: Electric air doors (12) are respectively installed at both ends of the intersection of the roadway (2) and the shaft (1). The electric air doors (12) are electrically connected to the controller (13), and the controller (13) is electrically connected to the start switch (15) installed at the top of the shaft (1).

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