A rockburst protection system for shaft construction

Abstract

This utility model discloses a rockburst protection system for vertical shaft construction, including a hoisting device and a protective device, with the protective device installed inside the vertical shaft. The protective device includes a vertically arranged protective cylinder and a protective cover. The protective cylinder is made of metal. At least two guide grooves are provided circumferentially on the inner wall of the protective cylinder, with the guide grooves positioned along the height of the protective cylinder. Both the protective cylinder and the protective cover are cylindrical structures with openings at both ends, with the upper end of the protective cover positioned inside the protective cylinder. At least two sliders are provided circumferentially on the outer wall of the protective cover, with the sliders positioned along the height of the protective cover and their positions matching the guide grooves. The sliders and guide grooves are slidably connected. The output end of the hoisting device is fixedly connected to the protective cylinder, and the bottom of the protective cover is fixed to the working surface inside the vertical shaft. Driven by the hoisting device, the protective cylinder moves up and down relative to the protective cover. This utility model's protection system solves the technical problem of blind spots in existing protective methods.

Description

Technical Field

[0001] This utility model belongs to the field of vertical shaft construction technology, and specifically relates to a rockburst protection system for vertical shaft construction. Background Technology

[0002] During shaft construction, especially in deep or high-stress surrounding rock areas, the self-stabilizing capacity of the surrounding rock decreases sharply, leading to frequent rockbursts (i.e., rock fracturing with high energy release). Due to the confined working space in shafts, rockbursts pose a significant threat to the lives of personnel and equipment. Particularly in the rock mass accumulation area after blasting, traditional protective measures are insufficient for effective coverage and reliable support, creating blind spots or risks of equipment damage. Furthermore, existing technologies generally lack a dedicated protective device that can be quickly deployed, flexibly moved, and provides good protection. Utility Model Content

[0003] In view of the existing technical problems, this utility model aims to provide a rockburst protection system for vertical shaft construction, which can solve the technical problem that the existing protection methods have blind spots.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rockburst protection system for vertical shaft construction is characterized by the following structural features: It includes a hoisting device and a protective device, the protective device being installed inside the vertical shaft; the protective device comprises a vertically arranged protective cylinder and a protective cover, the protective cylinder being made of metal; at least two guide grooves are provided circumferentially on the inner wall of the protective cylinder, the guide grooves being arranged along the height direction of the protective cylinder; both the protective cylinder and the protective cover are cylindrical structures with openings at both ends, the upper end of the protective cover being located inside the protective cylinder; at least two sliders are provided circumferentially on the outer wall of the protective cover, the sliders being arranged along the height direction of the protective cover, and the positions of the sliders matching the positions of the guide grooves, the sliders being slidably connected to the guide grooves; the output end of the hoisting device is fixedly connected to the protective cylinder; the bottom of the protective cover is fixed to the working surface inside the vertical shaft; under the drive of the hoisting device, the protective cylinder moves up and down relative to the protective cover.

[0006] By incorporating guide grooves and sliders, the relative movement of the protective cylinder and protective cover serves as a positioning guide. The size of the protective cover is determined based on the size of the equipment used during construction at the bottom of the shaft. A hoist can be used as the lifting device, or a hydraulic cylinder can be installed on the hoist, with its output end connected to the protective cylinder via a rope. During shaft excavation and lining construction, all personnel and equipment working underground are housed within the protective cover. The bottom of the protective cover is fixed to the working surface at the bottom of the shaft. After the protective cylinder is moved to a suitable position along the height of the protective cover using the lifting device, the top of the protective cylinder is fixed by the lifting device, effectively protecting the personnel and equipment inside the protective cover. Construction personnel can then carry out excavation and lining work within the shaft. In the event of a rockburst, flying rocks from the surrounding rock of the shaft mainly impact the outer wall of the protective cylinder and slide down it, posing no threat to the personnel and equipment inside the protective cover. The protective cylinder provides rigid protection, while the protective cover provides a certain degree of auxiliary protection. This utility model discloses a rockburst protection system for vertical shaft construction. It uses a protective cylinder to resist the impact of flying rocks generated by rockbursts and a protective cover to provide 360° full coverage protection for construction personnel and equipment inside the shaft. It provides timely and effective physical barriers for construction personnel in high-risk rockburst areas, improves the level of construction safety, and eliminates blind spots in protection.

[0007] Preferably, the height of the protective cover is at least 3m, and the height of the protective cylinder is 3-4m. Based on construction experience, during rockbursts, flying rocks mainly occur at a height of 3-5m above the bottom of the shaft working face. Setting the height of the protective cylinder to 3-4m can effectively resist the impact of flying rocks.

[0008] Preferably, the height of the protective cover is not less than the height of the protective cylinder.

[0009] Preferably, the bottom of the guide groove is provided with a limiting part, through which the slider passes; the top of the slider is provided with a protrusion, which is slidably connected to the guide groove; when the protective cylinder moves to the top of the protective cover, the protrusion abuts against the limiting part. By setting the limiting part, the position of the protective cover and the protective cylinder is restricted, preventing the protective cylinder from detaching from the protective cover when the protective cylinder moves upward.

[0010] Preferably, the outer diameter of the protective cover matches the inner diameter of the protective cylinder. To facilitate the movement of the protective cylinder relative to the protective cover and to improve protective safety, the outer diameter of the protective cover is slightly smaller than the inner diameter of the protective cylinder.

[0011] In order to make the protective cylinder more effective in resisting the impact of flying stones, preferably, the protective cylinder is made of steel plate with a thickness of 20-50mm.

[0012] Preferably, the protective cover includes a supporting frame and a protective net disposed between the supporting frames, the protective net being made of reinforced steel mesh material. The protective cover is mainly used to protect construction personnel and equipment located inside it; using reinforced steel mesh material for the protective cover provides protection while also saving costs.

[0013] Specifically, multiple guide grooves are provided, evenly arranged along the circumference of the inner wall of the outer cylinder. The number of sliders is equal to the number of guide grooves. By providing multiple guide grooves and sliders, the guide grooves and sliders cooperate to ensure stable, safe, and reliable operation.

[0014] To facilitate the movement of the protective cylinder, preferably, the top of the protective cylinder is provided with at least two lifting lugs.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The rockburst protection system for vertical shaft construction of this utility model uses a protective cylinder to resist the impact of flying rocks generated by rockbursts, and a protective cover to provide 360° full coverage protection for construction personnel and equipment. It provides timely and effective physical barriers for construction personnel in high-risk rockburst areas, improves the level of construction safety, and eliminates blind spots in protection.

[0017] 2. The rockburst protection system for vertical shaft construction of this utility model has a simple and stable structure, low cost, stable operation, and good protection performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the protective device structure in the rockburst protection system for vertical shaft construction of this utility model;

[0019] Figure 2 yes Figure 1 A top-view structural diagram;

[0020] Figure 3 yes Figure 1 The front view;

[0021] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure.

[0022] In the figure

[0023] 1-Protective cylinder; 2-Protective cover; 3-Guide groove; 4-Slider; 5-Limiting part; 6-Protrusion. Detailed Implementation

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0025] This embodiment provides a rockburst protection system for vertical shaft construction, including a hoisting device and a protective device, which is installed inside the vertical shaft. For example... Figure 1 and Figure 2 As shown, the protective device includes a vertically arranged protective cylinder 1 and a protective cover 2. Both the protective cylinder 1 and the protective cover 2 are cylindrical structures with openings at both ends, and the outer diameter of the protective cover 2 is slightly smaller than the inner diameter of the protective cylinder 1. The upper end of the protective cover 2 is located inside the protective cylinder 1. The protective cylinder 1 is made of metal steel plate with a thickness of 20-50 mm, and the height of the protective cylinder 1 is 3-4 m. Four guide grooves 3 are evenly arranged circumferentially on the inner wall of the protective cylinder 1, and the guide grooves 3 are arranged along the height direction of the protective cylinder 1. These guide grooves 3 are made of No. 28 channel steel. Figure 4 As shown, the bottom of the guide groove 3 is provided with a limiting part 5. The protective cover 2 includes a supporting frame and a protective net disposed between the supporting frames, the protective net being made of reinforced steel mesh material. The height of the protective cover 2 is at least 3m, and the height of the protective cover 2 is not less than the height of the protective cylinder 1. Figure 2 and Figure 3 As shown, four sliders 4 are evenly arranged circumferentially on the outer wall of the protective cover 2. The sliders 4 are arranged along the height direction of the protective cover 2, and the positions of the four sliders 4 match the positions of the four guide grooves 3. Figure 4 As shown, the slider 4 passes through the limiting part 5 and is slidably connected to the guide groove 3. A protrusion 6 is provided at the top of the slider 4, positioned above the limiting part 5 and slidably connected to the guide groove 3. When the protective cylinder 1 moves to the top of the protective cover 2, the protrusion 6 abuts against the limiting part 5. The output end of the lifting device is fixedly connected to the top of the protective cylinder 1, and the bottom of the protective cover 2 is fixed to the working surface inside the shaft. Driven by the lifting device, the protective cylinder 1 moves up and down relative to the protective cover 2, and the top of the protective cylinder 1 is fixed by the lifting device.

[0026] During shaft excavation and construction, workers and equipment are located inside protective cover 2. The bottom of protective cover 2 is fixed to the working surface at the bottom of the shaft. After the protective cylinder 1 is moved to a suitable position along the height direction of protective cover 2 using a lifting device, the top of protective cylinder 1 is fixed by the lifting device. The lifting device can be a hoist, or a hydraulic cylinder can be installed on the hoist. The output end of the hydraulic cylinder is fixedly connected to the protective cylinder 1 by a rope, and the lifting and lowering action of the rope is controlled by the hydraulic cylinder. After the protective cylinder 1 is lifted to the designated height by the lifting device, the workers and equipment inside protective cover 2 can be effectively protected. A suspended platform can also be installed in the shaft, which serves as a transition support platform for stabilizing the connection between the rope and the protective cylinder 1. In the event of a rockburst, the flying rocks from the surrounding rock of the shaft mainly impact the outer wall of protective cylinder 1 and slide down along the outer wall of protective cylinder 1, posing no threat to the workers and equipment inside protective cover 2, achieving 360° full-coverage protection for workers and equipment. Protective cylinder 1 provides rigid protection, while protective cover 2 provides a certain degree of auxiliary protection.

[0027] The above embodiments should be understood as being used only to illustrate the utility model more clearly, and not to limit the scope of the utility model. After reading this utility model, any modifications of the embodiments by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A rockburst protection system for vertical shaft construction, characterized in that: It includes a lifting device and a protective device, which is installed inside the shaft; The protective device includes a vertically arranged protective cylinder (1) and a protective cover (2), wherein the protective cylinder (1) is made of metal material; At least two guide grooves (3) are provided on the inner wall of the protective cylinder (1) along the circumferential direction, and the guide grooves (3) are arranged along the height direction of the protective cylinder (1); Both the protective cylinder (1) and the protective cover (2) are cylindrical structures with openings at both ends, and the upper end of the protective cover (2) is set inside the protective cylinder (1); At least two sliders (4) are provided on the outer wall of the protective cover (2) along the circumferential direction. The sliders (4) are arranged along the height direction of the protective cover (2), and the arrangement position of the sliders (4) matches the arrangement position of the guide groove (3). The sliders (4) and the guide groove (3) are slidably connected. The output end of the lifting device is fixedly connected to the protective cylinder (1), and the bottom of the protective cover (2) is fixed on the working surface inside the shaft. Under the drive of the lifting device, the protective cylinder (1) moves up and down relative to the protective cover (2).

2. The rockburst protection system for vertical shaft construction according to claim 1, characterized in that: The height of the protective cover (2) is at least 3m, and the height of the protective cylinder (1) is 3 to 4m.

3. The rockburst protection system for vertical shaft construction according to claim 2, characterized in that: The height of the protective cover (2) is not less than the height of the protective cylinder (1).

4. The rockburst protection system for vertical shaft construction according to claim 1, characterized in that: The bottom of the guide groove (3) is provided with a limiting part (5), and the slider (4) passes through the limiting part (5); the top of the slider (4) is provided with a protrusion (6), which is slidably connected to the guide groove (3); when the protective cylinder (1) moves to the top of the protective cover (2), the protrusion (6) abuts against the limiting part (5).

5. The rockburst protection system for shaft construction according to claim 1, characterized in that: The outer diameter of the protective cover (2) matches the inner diameter of the protective cylinder (1).

6. The rockburst protection system for shaft construction according to claim 1, characterized in that: The protective cylinder (1) is made of steel plate with a thickness of 20-50 mm.

7. The rockburst protection system for shaft construction according to claim 1, characterized in that: The protective cover (2) includes a support frame and a protective net disposed between the support frames. The protective net is made of steel reinforcement material.

8. The rockburst protection system for shaft construction according to claim 1, characterized in that: The guide groove (3) is provided in multiple ways. The multiple guide grooves (3) are evenly arranged along the inner wall of the protective cylinder (1). The number of sliders (4) is equal to the number of guide grooves (3).

9. The rockburst protection system for vertical shaft construction according to claim 1, characterized in that: The protective cylinder (1) is provided with at least two lifting lugs at the top.

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