Fixed-point hole site and defense stable frame for large-section tunnel blasting

Abstract

The utility model relates to tunnel blasting technical field, and disclose a kind of fixed point hole site deployment stabilizing frame for large section tunnel blasting, including tunnel wall body, and the blast hole of several groups being located in tunnel wall body inner wall opening, the inside of tunnel wall body is provided with arc stabilizing frame body, the side of stabilizing frame body away from tunnel wall body is provided with support assembly, the inside of stabilizing frame body is provided with limiting component. This fixed point hole site deployment stabilizing frame for large section tunnel blasting, by setting stabilizing frame body and limiting component are made of plastic material, plastic material cost cost is lower, after damaging in single blasting, the new device of next blasting use will not cause larger economic loss, practicality is higher, and by setting stabilizing frame body and limiting component are integrally injection molded, integrally injection molding process is suitable for mass production, production efficiency is high, cost is low, and size tolerance control is accurate, guarantee the adaptability of stabilizing frame body and blast hole.

Description

Technical Field

[0001] This utility model relates to the field of tunnel blasting technology, specifically a fixed-point hole deployment stabilization frame for large-section tunnel blasting. Background Technology

[0002] In engineering fields such as transportation, water conservancy, and mining, large-section tunnels are increasingly widely used due to their high traffic capacity and space utilization. Blasting is a core component of the excavation and construction of these tunnels, and the accuracy and stability of the blasting hole positions directly determine the blasting effect. Hole position deviations can lead to uneven distribution of blasting energy, causing problems such as over-excavation and under-excavation, poor tunnel cross-section regularity, and excessive disturbance of the surrounding rock. This not only increases the amount of subsequent support work and construction costs but may also create safety hazards. Therefore, when deploying blasting holes, it is necessary to use stabilizing devices to accurately position and fix the holes to ensure the safety and effectiveness of the blasting operation.

[0003] Chinese Utility Model Patent Publication Number: CN 116182654 B discloses a stabilizing frame for fixed-point hole placement in large-section tunnel blasting. The instruction manual for this stabilizing frame describes a process where, during use, the height of the movable plate is adjusted according to the height of the tunnel wall. Specifically, pulling the long pin causes it to move the pressing plate away from the connecting rod, preventing the connecting rod from being jammed. This allows for movement of the connecting rod and the movable plate, quickly adjusting the height of the movable plate. After adjustment, releasing the long pin causes it to move back under the action of the slider and connecting spring, causing the pressing plate to press down on the connecting rod again, ensuring the connecting rod remains stably within the frame due to friction. This achieves the purpose of height adjustment. However, this stabilizing frame for fixed-point hole placement in large-section tunnel blasting is cumbersome to operate and has a complex structure, resulting in high costs. If damaged after a single blast, it needs to be replaced with a new stabilizing frame, making continuous blasting operations even more costly and limiting its practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a fixed-point hole deployment and stabilization frame for blasting large-section tunnels, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a fixed-point hole deployment stabilization frame for blasting of large-section tunnels, including a tunnel wall and a number of blasting holes opened on the inner wall of the tunnel wall. An arc-shaped stabilization frame body is provided on the inner side of the tunnel wall. A support component is provided on the side of the stabilization frame body away from the tunnel wall. A limiting component is provided on the inner side of the stabilization frame body. Connecting columns are fixedly installed at both ends of the stabilization frame body near the support component. A positioning groove for insertion and installation with the support component is opened at the end of the connecting column near the support component. A limiting pin is provided on the outer side of the support component. The limiting pin passes through the connecting column and extends into the interior of the support component.

[0006] Preferably, the limiting components are provided in several identical groups, and the several groups of limiting components are located in a ring on the inner side of the stabilizer body and correspond one-to-one with the blast holes.

[0007] The above technical solution involves setting up several sets of ring-shaped limiting components that correspond one-to-one with the blasting holes, ensuring that each blasting hole can be independently limited. Through the synchronous action of multiple sets of limiting components, the constraint capability of the stabilizing frame body on the overall hole layout is enhanced, thereby improving the regularity of the tunnel cross-section after blasting.

[0008] Preferably, the support assembly includes a base and a fixed column. An extension column is slidably mounted on the side of the fixed column away from the base. Several sets of limiting holes are evenly spaced on the outer surface of the fixed column. A guide block is fixedly mounted on the outer surface of the extension column away from the fixed column. A reinforcing block is fixedly mounted between the base and the fixed column. A limiting column and a stop block are provided on the inner side of the extension column. A connecting seat is fixedly mounted on the end of the stop block near the limiting column. A movable column is fixedly mounted on the end of the limiting column near the stop block. A limiting ring is fixedly mounted on the outer surface of the movable column near the connecting seat. A return spring is provided on the inner side of the connecting seat.

[0009] Preferably, the cross-section of the limiting post is the same as the cross-section of the limiting hole, the limiting post can be inserted into the limiting hole, and one end of the reset spring abuts against the limiting ring.

[0010] Through the above technical solution, the sliding connection between the fixed column and the extension column facilitates the length adjustment of the fixed column and the extension column, adapting to large-section tunnels with different cross-sectional dimensions. The strengthening block enhances the connection strength between the base and the fixed column, resisting vibration and surrounding rock pressure during tunnel construction and preventing deformation of the support components. The guide block assists the extension column in quickly aligning with the positioning groove of the connecting column, shortening the installation and debugging time and improving construction efficiency. By setting the cross-section of the limiting column to be the same as that of the limiting hole, and the limiting column can be inserted into the limiting hole, the length of the fixed column and the extension column can be adjusted simply by pressing the limiting column into the interior of the fixed column. The limiting column can be automatically reset by one end of the return spring abutting against the limiting ring until the limiting column is re-inserted into the limiting hole, achieving rapid positioning of the fixed column and the extension column.

[0011] Preferably, the limiting component includes a baffle, the outer surface of the baffle near the tunnel wall is provided with a threaded portion, the baffle away from the tunnel wall is provided with a notch, and a handle is fixedly installed on the baffle away from the tunnel wall.

[0012] Preferably, the baffle is threadedly connected to the rupture hole via a threaded portion.

[0013] Through the above technical solution, the baffle is threadedly connected to the blast hole via the threaded part, which facilitates the quick installation of the limiting component and the blast hole, supports the explosive inside the blast hole, and facilitates the placement of the explosive fuse by setting a notch.

[0014] Preferably, both the stabilizer body and the limiting component are made of plastic, and both are integrally injection molded.

[0015] The above technical solution uses plastic materials for both the stabilizer body and the limiting components. Plastic materials are low-cost, and if damaged in a single blast, a new device can be used for the next blast without causing significant economic losses, making it more practical. Furthermore, the stabilizer body and the limiting components are integrally injection molded, a process suitable for mass production with high efficiency, low cost, and precise dimensional tolerance control, ensuring the compatibility between the stabilizer body and the blast hole.

[0016] Compared with the prior art, this utility model provides a fixed-point hole deployment stabilization frame for large-section tunnel blasting, which has the following beneficial effects: 1. The fixed-point hole deployment stabilization frame for large-section tunnel blasting is made of plastic, which is a low-cost material. If it is damaged in a single blast, a new device can be used in the next blast without causing significant economic losses, making it more practical. Furthermore, the stabilization frame and the limiting components are all integrally injection molded, which is suitable for mass production, with high production efficiency, low cost, and precise dimensional tolerance control, ensuring the compatibility between the stabilization frame and the blasting hole. 2. The fixed-point hole deployment stabilization frame for large-section tunnel blasting uses a sliding connection between fixed and extended columns to facilitate length adjustment of the fixed and extended columns, adapting to large-section tunnels of different sizes. The guide block assists the extended column in quickly aligning with the positioning groove of the connecting column, allowing the arc-shaped stabilization frame body to quickly fit against the inner wall of the tunnel wall, ensuring that the limiting components correspond one-to-one with the blasting holes. The limiting components are threadedly connected to the blasting holes through the threaded part, which facilitates rapid support of the explosives inside the blasting holes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the installation structure of the stabilizer body and the tunnel wall of this utility model; Figure 4 This is a three-dimensional structural diagram of the limiting component of this utility model; Figure 5 This is a three-dimensional structural diagram of the tunnel wall of this utility model; Figure 6 This is a schematic diagram showing the disassembled structure of the support component and the stabilizer body of this utility model; Figure 7 This is a three-dimensional structural diagram of the support component of this utility model; Figure 8 This is a cross-sectional structural diagram of the support component of this utility model; Figure 9 This utility model Figure 8 A magnified structural diagram of point A in the middle.

[0018] The components include: 1. Tunnel wall; 2. Stabilizer body; 3. Support assembly; 301. Base; 302. Fixed column; 303. Extension column; 304. Limiting hole; 305. Guide block; 306. Reinforcing block; 307. Limiting column; 308. Abutment block; 309. Connecting seat; 310. Movable column; 311. Limiting ring; 312. Return spring; 4. Limiting assembly; 401. Baffle; 402. Threaded part; 403. Notch; 404. Handle; 5. Connecting column; 6. Positioning groove; 7. Limiting pin; 8. Bursting hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: As Figure 1 - Figure 9 As shown, the present invention provides a fixed-point hole deployment stabilization frame for large-section tunnel blasting, including a tunnel wall 1 and several sets of blasting holes 8 opened on the inner wall of the tunnel wall 1. An arc-shaped stabilization frame body 2 is provided on the inner side of the tunnel wall 1. A support component 3 is provided on the side of the stabilization frame body 2 away from the tunnel wall 1. A limit component 4 is provided on the inner side of the stabilization frame body 2. Connecting columns 5 are fixedly installed at both ends of the stabilization frame body 2 near the support component 3. A positioning groove 6 is opened at the end of the connecting column 5 near the support component 3 for insertion and installation with the support component 3. A limit pin 7 is provided on the outer side of the support component 3. The limit pin 7 passes through the connecting column 5 and extends into the interior of the support component 3.

[0021] Specifically, several identical sets of limiting components 4 are provided, arranged in a ring on the inner side of the stabilizing frame body 2, and each corresponding to a blast hole 8. The advantage is that by setting several sets of ring-shaped limiting components 4 corresponding to each blast hole 8, each blast hole 8 can be independently limited. The synchronous action of multiple sets of limiting components 4 enhances the stabilizing frame body 2's constraint on the overall hole layout, improving the regularity of the tunnel cross-section after blasting.

[0022] Specifically, the support component 3 includes a base 301 and a fixed column 302. An extension column 303 is slidably installed on the side of the fixed column 302 away from the base 301. Several sets of limiting holes 304 are evenly spaced on the outer surface of the fixed column 302. A guide block 305 is fixedly installed on the outer surface of the end of the extension column 303 away from the fixed column 302. A reinforcing block 306 is fixedly installed between the base 301 and the fixed column 302. A limiting column 307 and a stop block 308 are provided on the inner side of the extension column 303. A connecting seat 309 is fixedly installed on the end of the stop block 308 near the limiting column 307. A movable column 310 is fixedly installed on the end of the limiting column 307 near the stop block 308. A limiting ring 311 is fixedly installed on the outer surface of the end of the movable column 310 near the connecting seat 309. A return spring 312 is provided on the inner side of the connecting seat 309.

[0023] Specifically, the cross-section of the limiting post 307 is the same as that of the limiting hole 304. The limiting post 307 can be inserted into the limiting hole 304, and one end of the return spring 312 abuts against the limiting ring 311. The advantages are that the sliding connection between the fixed post 302 and the extension post 303 facilitates the length adjustment of the fixed post 302 and the extension post 303, adapting to large-section tunnels with different cross-sectional dimensions. The reinforcing block 306 enhances the connection strength between the base 301 and the fixed post 302, resisting vibration and surrounding rock pressure during tunnel construction and preventing deformation of the support component 3. The guide block 305 assists the extension post 303 in quickly aligning with the positioning groove 6 of the connecting post 5, shortening installation and debugging time, improving construction efficiency, and providing a limit. The cross-section of the column 307 is the same as that of the limiting hole 304, and the limiting column 307 can be inserted into the limiting hole 304. During adjustment, simply press the limiting column 307 into the interior of the fixed column 302 to adjust the length of the fixed column 302 and the extension column 303. By having one end of the return spring 312 abut against the limiting ring 311, the limiting column 307 can be automatically reset until it is re-inserted into the limiting hole 304, thus achieving rapid positioning of the fixed column 302 and the extension column 303.

[0024] Example 2: Figure 2 - Figure 9 As shown, this is an improvement on the previous embodiment.

[0025] Specifically, the limiting component 4 includes a baffle 401. The outer surface of the baffle 401 near the tunnel wall 1 is provided with a threaded part 402. The baffle 401 away from the tunnel wall 1 is provided with a notch 403. A handle 404 is fixedly installed on the baffle 401 away from the tunnel wall 1.

[0026] Specifically, the baffle 401 is threadedly connected to the blast hole 8 via the threaded portion 402. The advantage is that the threaded connection between the baffle 401 and the blast hole 8 facilitates the rapid installation of the limiting component 4 and the blast hole 8, supports the explosive inside the blast hole 8, and the notch 403 facilitates the placement of the explosive fuse.

[0027] Specifically, both the stabilizer body 2 and the limiting component 4 are made of plastic, and both are integrally injection molded. The advantages are that by using plastic for both the stabilizer body 2 and the limiting component 4, the cost of the plastic material is low. If damaged in a single blast, a new device can be used for the next blast without causing significant economic loss, thus increasing practicality. Furthermore, the integral injection molding process is suitable for mass production, resulting in high production efficiency, low cost, and precise dimensional tolerance control, ensuring the compatibility between the stabilizer body 2 and the blast hole 8.

[0028] Working principle: During use, the sliding connection between the fixed column 302 and the extension column 303 facilitates the length adjustment of the fixed column 302 and the extension column 303, adapting to large-section tunnels with different cross-sectional dimensions. The reinforcing block 306 enhances the connection strength between the base 301 and the fixed column 302, resisting vibration and surrounding rock pressure during tunnel construction and preventing deformation of the support component 3. The guide block 305 assists the extension column 303 in quickly aligning with the positioning groove 6 of the connecting column 5, shortening installation and debugging time, improving construction efficiency, and setting limiters. The cross-section of column 307 is the same as that of limiting hole 304, and the limiting column 307 can be inserted into the limiting hole 304. During adjustment, simply press the limiting column 307 into the interior of the fixed column 302 to adjust the length of the fixed column 302 and the extension column 303. The limiting column 307 automatically resets when one end of the return spring 312 abuts against the limiting ring 311, until it re-engages in the limiting hole 304, thus quickly limiting the position of the fixed column 302 and the extension column 303. Then, the stabilizer frame is... The body 2 is laid on the inner wall of the tunnel wall 1, and several sets of ring-shaped limiting components 4 are set up to correspond one-to-one with the blasting holes 8, ensuring that each blasting hole 8 can obtain independent limiting. Through the synchronous action of multiple sets of limiting components 4, the constraint ability of the stabilizing frame body 2 on the overall hole layout is enhanced, and the regularity of the tunnel cross section after blasting is improved. The baffle 401 is threadedly connected to the blasting hole 8 through the threaded part 402, which can facilitate the rapid installation of the limiting components 4 and the blasting hole 8, and support the explosive inside the blasting hole 8. The 403 port facilitates the placement of the explosive fuse. Both the stabilizer body 2 and the limiting component 4 are made of plastic, which is a low-cost material. If damaged in a single blast, a new device can be used for the next blast without causing significant economic losses, making it more practical. Furthermore, the stabilizer body 2 and the limiting component 4 are integrally injection molded, a process suitable for mass production with high efficiency, low cost, and precise dimensional tolerance control, ensuring the compatibility between the stabilizer body 2 and the blast hole 8.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed-point hole deployment stabilization frame for blasting large-section tunnels, comprising a tunnel wall (1) and a plurality of blasting holes (8) located on the inner wall of the tunnel wall (1), characterized in that: An arc-shaped stabilizing frame body (2) is provided on the inner side of the tunnel wall (1). A support component (3) is provided on the side of the stabilizing frame body (2) away from the tunnel wall (1). A limiting component (4) is provided on the inner side of the stabilizing frame body (2). Connecting columns (5) are fixedly installed on both ends of the stabilizing frame body (2) near the support component (3). A positioning groove (6) for insertion and installation with the support component (3) is opened on one end of the connecting column (5) near the support component (3). A limiting pin (7) is provided on the outer side of the support component (3). The limiting pin (7) passes through the connecting column (5) and extends into the interior of the support component (3).

2. The fixed-point borehole deployment stabilization frame for large-section tunnel blasting according to claim 1, characterized in that: The limiting components (4) are provided in several identical groups. The several groups of limiting components (4) are located on the inner side of the stabilizer body (2) in a ring distribution and correspond one-to-one with the blasting holes (8).

3. The fixed-point borehole deployment stabilization frame for large-section tunnel blasting according to claim 1, characterized in that: The support assembly (3) includes a base (301) and a fixed column (302). An extension column (303) is slidably installed on the side of the fixed column (302) away from the base (301). Several sets of limiting holes (304) are equally spaced on the outer surface of the fixed column (302). A guide block (305) is fixedly installed on the outer surface of the end of the extension column (303) away from the fixed column (302). A reinforcing block (306) is fixedly installed between the base (301) and the fixed column (302). The inner side of the extension column (303) is provided with a limiting column (307) and a stop block (308). A connecting seat (309) is fixedly installed at one end of the stop block (308) near the limiting column (307). A movable column (310) is fixedly installed at one end of the limiting column (307) near the stop block (308). A limiting ring (311) is fixedly installed on the outer surface of one end of the movable column (310) near the connecting seat (309). A return spring (312) is provided on the inner side of the connecting seat (309).

4. The fixed-point borehole deployment stabilization frame for large-section tunnel blasting according to claim 3, characterized in that: The cross-section of the limiting post (307) is the same as that of the limiting hole (304). The limiting post (307) can be inserted into the limiting hole (304). One end of the reset spring (312) abuts against the limiting ring (311).

5. The fixed-point borehole deployment stabilization frame for large-section tunnel blasting according to claim 1, characterized in that: The limiting component (4) includes a baffle (401), the outer surface of the baffle (401) near the tunnel wall (1) is provided with a threaded part (402), the baffle (401) away from the tunnel wall (1) is provided with a notch (403), and a handle (404) is fixedly installed on the baffle (401) away from the tunnel wall (1).

6. The fixed-point borehole deployment stabilization frame for large-section tunnel blasting according to claim 5, characterized in that: The baffle (401) is threadedly connected to the rupture hole (8) via a threaded part (402).

7. The fixed-point borehole deployment stabilization frame for large-section tunnel blasting according to claim 1, characterized in that: The stabilizer body (2) and the limiting component (4) are both made of plastic material, and the stabilizer body (2) and the limiting component (4) are both integrally injection molded.

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