Safety protection structure for drilling, blasting, excavation and blasting of subsurface tunnel

Abstract

The utility model discloses a safety protection structure for drilling, blasting, excavation and blasting of a subsurface tunnel, and aims to solve the technical problems that in the prior art, a traditional protection device is mostly manufactured by adopting a mode of integrally welding a steel plate and a support, is large in size, inconvenient to transport, mount and use, poor in buffering effect, high in safety and the like. The technical problems that broken stone directly impacts a protection device, broken stone is prone to being broken and flies around, and broken stone flying has certain potential safety hazards are solved. The blasting safety protection structure comprises a buffering water bag and a bulletproof cloth bag installed outside the buffering water bag, a water pipe is installed on the outer surface of the buffering water bag in a penetrating mode, and a threaded connector is installed at the bottom end of the water pipe. The safety protection structure is convenient to transport, install and use, the impact force of flying rocks is buffered, the flying rocks are prevented from being impacted, broken and flying, and the use safety of the safety protection structure is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of tunnel drilling and blasting protection structure, specifically relating to a safety protection structure for drilling and blasting excavation in underground tunnels. Background Technology

[0002] Tunnels are key and critical projects in the construction of highways and railways. With the development of railway construction and the advancement of technology, tunnel excavation methods have developed rapidly. Commonly used excavation methods include drill-and-blast, shield tunneling, and tunnel boring machine (TBM) excavation. Due to its strong adaptability to geological conditions and low excavation cost, the drill-and-blast method is particularly suitable for the construction of tunnels in hard rock, fractured rock, and a large number of short tunnels. Therefore, the drill-and-blast method remains the commonly used tunnel excavation method both domestically and internationally. During drill-and-blast excavation in underground tunnels, protective devices are used to prevent flying debris. Traditional protective devices are often manufactured by welding steel plates and supports together, resulting in large volumes that are inconvenient for transportation and installation. Furthermore, the integrated welding of steel plates and supports provides poor buffering effect, and direct impact of debris on the protective device can easily cause it to shatter and fly outwards, posing a certain safety hazard. Therefore, a new type of safety protection structure for drill-and-blast excavation in underground tunnels is designed to overcome the above-mentioned technical defects. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a safety protection structure for drilling and blasting in tunnel excavation. This safety protection structure aims to solve the technical problems of traditional protective devices, which are mostly manufactured by welding steel plates and supports together, resulting in large volume, inconvenience for transportation and installation, poor buffering effect, and easy breakage and flying of debris when directly impacting the protective device, which poses certain safety hazards.

[0005] (2) Technical solution

[0006] To address the aforementioned technical problems, this utility model provides a safety protection structure for blasting excavation in underground tunnels. This safety protection structure includes a buffer water bladder and a bulletproof cloth bag installed on its exterior. A water pipe is installed through the outer surface of the buffer water bladder, and a threaded connector is installed at the bottom end of the water pipe. A threaded cap is provided below the threaded connector. Hanging rings are installed at both ends of the bulletproof cloth bag. Support members are provided on both sides of the bulletproof cloth bag, and support rods are slidably installed inside the support members. A spiral grounding plug is installed at the bottom end of the support rod. A fixing ring is installed on the side of the support member near the bulletproof cloth bag. A damping spring is provided between the support member and the bulletproof cloth bag. A first hook and a second hook are respectively installed at both ends of the damping spring, and the first hook and the second hook are respectively installed inside the fixing ring and the hanging ring. A mounting base is fixedly connected to the outer surface of the support rod, and an auxiliary grounding plug is installed inside the mounting base. A handle is installed at the top of the support rod, and an anti-slip sleeve is installed on the outer surface of the handle.

[0007] When using the blasting safety protection structure of this technical solution, the bulletproof bag and support components are installed using a damping spring in conjunction with the first and second hooks. The handle is gripped, the support rod and spiral ground bolt are pressed down and rotated, causing the spiral ground bolt to drill into the ground for installation. Next, the auxiliary ground bolt is pulled down at an angle and inserted into the bottom surface for support and reinforcement, increasing the stability of the safety protection structure. Then, by unscrewing the threaded cap from the threaded connector, the threaded connector is connected to a water pipe, through which water is injected into the bulletproof bag within the buffer water bladder. This facilitates the installation and disassembly of the safety protection structure, and the soft bulletproof bag and buffer water bladder can be rolled up. This design facilitates the installation, disassembly, and storage of the safety protection structure, reducing its size and weight. This makes it easier to transport, install, and use. During use, when a flying rock from an explosion impacts the bulletproof bag, the impact force is transmitted from the bag's surface to the buffer water bladder and its internal water source. The water ripples and deformation of the bulletproof bag cushion the flying rock. The impact force is then transmitted through the bulletproof bag and the second hook to the damping spring for secondary cushioning, further enhancing the structure's buffering effect. This reduces the impact force of the flying rock, preventing it from shattering and flying away, thus increasing the safety of the structure.

[0008] Preferably, the outer surface of the auxiliary grounding plug has a socket, and a floor is provided on the outside of the auxiliary grounding plug. The outer surface of the floor has a positioning hole, and a plug rod is slidably installed inside the positioning hole and the socket. Both ends of the plug rod are threaded with nuts. By setting up the plug rod and the floor, the grounding area of ​​the safety protection structure is increased, thereby increasing the stability of the safety protection structure.

[0009] Furthermore, the bulletproof pouches and water-filled cushioning bladders are made of transparent material. The transparent design of the bulletproof pouches allows for easy monitoring of the water level inside.

[0010] Furthermore, a traction rope is installed on the outer surface of the external threaded connector, with its bottom end rotatably mounted to the threaded cap. This traction rope secures the threaded cap, preventing it from being lost when unscrewed.

[0011] Furthermore, the bulletproof pouch has a storage bag on the back. This storage bag allows for the organization and storage of water pipes, preventing them from becoming tangled and increasing the neatness and aesthetics of the safety structure.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model uses a damping spring in conjunction with a first hook and a second hook to install the bulletproof bag and support components. By grasping the handle, pressing down on the support rod and the spiral ground plug and rotating it, the spiral ground plug rotates and drills into the ground for installation. Next, pulling on the auxiliary ground plug and tilting it downwards provides support and reinforcement, increasing the stability of the safety protection structure. Then, by unscrewing the threaded cap from the threaded connector, the threaded connector is connected to a water pipe, through which water is injected into the bulletproof bag within the buffer bladder. This facilitates the installation and disassembly of the safety protection structure. The soft bulletproof bag and buffer bladder can be rolled up, ensuring the safety protection structure is secure. The structure is designed for easy installation, disassembly, and retraction, reducing its volume and weight and facilitating transportation and installation. During use, when a flying rock impacts the bulletproof bag, the impact force is transmitted to the buffer water bladder and its internal water source. The water ripples and deformation of the bulletproof bag cushion the flying rock. The impact force is then transmitted through the bulletproof bag and the second hook to the damping spring for secondary cushioning, further enhancing the cushioning effect of the safety structure. This buffers the impact force of the flying rock, preventing it from shattering and flying away, thus increasing the safety of the safety structure. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the safety protection structure for blasting according to this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the bulletproof bag, the safety protection structure for blasting according to this utility model;

[0017] Figure 3 This is a rear view schematic diagram of the safety protection structure for blasting according to this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the safety protection structure floor for blasting according to this utility model;

[0019] Figure 5 This is a schematic diagram of the auxiliary ground insertion structure for the safety protection structure during blasting of this utility model.

[0020] Figure 6 This utility model provides a safety protection structure for blasting. Figure 3 Enlarged structural diagram at point A in the middle;

[0021] Figure 7 This utility model provides a safety protection structure for blasting. Figure 3 Enlarged structural diagram at point B.

[0022] The markings in the attached diagram are as follows: 1. Bulletproof pouch; 2. Damping spring; 3. Handle; 4. Support rod; 5. Fixing ring; 6. First hook; 7. Second hook; 8. Spiral ground insert; 9. Hanging ring; 10. Auxiliary ground insert; 11. Floor; 12. Insert rod; 13. Buffer water bladder; 14. Storage bag; 15. Water pipe; 16. Support component; 17. Mounting base; 18. Positioning hole; 19. Insertion hole; 20. Threaded connector; 21. Threaded cap; 22. Traction rope. Detailed Implementation

[0023] This specific embodiment is a safety protection structure for drilling and blasting excavation in a cut-and-cover tunnel, and its structural diagram is shown below. Figures 1-7 As shown, the safety protection structure for the blast includes a water-cushioning bladder 13 and a bulletproof cloth bag 1 installed on its exterior. A water pipe 15 is installed through the outer surface of the water-cushioning bladder 13, and a threaded connector 20 is installed at the bottom end of the water pipe 15. A threaded cap 21 is provided below the threaded connector 20. Hanging rings 9 are installed at both ends of the bulletproof cloth bag 1. Support members 16 are provided on both sides of the bulletproof cloth bag 1, and a support rod 4 is slidably installed inside the support member 16. A spiral ground plug 8 is installed at the bottom end of the support rod 4. A fixing ring 5 is installed on the side of the support member 16 near the bulletproof cloth bag 1. A damping spring 2 is provided between the support member 16 and the bulletproof cloth bag 1. A first hook 6 and a second hook 7 are respectively installed at both ends of the damping spring 2, and the first hook 6 and the second hook 7 are respectively installed inside the fixing ring 5 and the hanging ring 9. A mounting base 17 is fixedly connected to the outer surface of the support rod 4, and an auxiliary ground plug 10 is installed inside the mounting base 17. A handle 3 is installed at the top end of the support rod 4, and an anti-slip sleeve is installed on the outer surface of the handle 3.

[0024] The auxiliary grounding plug 10 has an insertion hole 19 on its outer surface. A floor 11 is installed on the outside of the auxiliary grounding plug 10, and a positioning hole 18 is provided on the outer surface of the floor 11. An insertion rod 12 is slidably installed inside the positioning hole 18 and the insertion hole 19, and both ends of the insertion rod 12 are threaded with nuts. The insertion rod 12 and the floor 11 increase the grounding area of ​​the safety protection structure, thereby increasing its stability. The bulletproof bag 1 and the buffer water bladder 13 are made of transparent material. The transparent bulletproof bag 1 allows for easy viewing of the water level inside. A traction rope 22 is installed on the outer surface of the external threaded connector 20, and the bottom end of the traction rope 22 is rotatably installed with the threaded cap 21. The traction rope 22 secures the threaded cap 21, preventing it from being lost when unscrewed.

[0025] In addition, a storage bag 14 is installed on the back of the bulletproof pouch 1. The storage bag 14 can be used to store the water pipe 15, preventing it from being scattered and increasing the neatness and aesthetics of the safety protection structure.

[0026] Working principle: When using the blasting safety protection structure of this technical solution, the bulletproof bag 1 and the support component 16 are installed and used by the damping spring 2 in conjunction with the first hook 6 and the second hook 7. The handle 3 is grasped, the support rod 4 and the spiral ground plug 8 are pressed down and rotated, and the spiral ground plug 8 rotates and drills into the ground for installation. Then, the auxiliary ground plug 10 is pulled down at an angle and inserted into the bottom surface for support and reinforcement, increasing the stability of the safety protection structure. Next, by unscrewing the threaded cap 21 from the threaded connector 20, the threaded connector 20 is connected to the water pipe. Water is injected into the bulletproof bag 1 in the buffer water bladder 13 through the water pipe 15, making the safety protection structure easy to install and disassemble. The soft bulletproof bag 1 and... The buffer water bladder 13 can be rolled up, making the safety protection structure easy to install, disassemble, and store, reducing its volume and weight, and facilitating its transportation and installation. In use, when a flying rock from an explosion hits the bulletproof bag 1, the impact force on the surface of the bulletproof bag 1 is transmitted to the buffer water bladder 13 and the water source inside. The water fluctuation and the deformation of the bulletproof bag 1 buffer the flying rock. Then, the impact force is transmitted through the bulletproof bag 1 and the second hook 7 to the damping spring 2 for secondary buffering, further enhancing the buffering effect of the safety protection structure, buffering the impact force of the flying rock, preventing the flying rock from shattering and flying away, and increasing the safety of the safety protection structure.

[0027] All technical features in this embodiment can be freely combined according to actual needs.

[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A safety protection structure for drill and blast excavation of a tunnel excavated by blasting, the safety protection structure for blasting comprising a buffer water bag (13) and a bulletproof cloth bag (1) mounted to the outside of the buffer water bag (13), characterized in that: The outer surface of the buffer water bag (13) is provided with a water pipe (15) throughout, and the bottom end of the water pipe (15) is provided with a threaded joint (20), and the lower side of the threaded joint (20) is provided with a threaded cap (21), both ends of the bulletproof cloth bag (1) are provided with a hanging ring (9), both sides of the bulletproof cloth bag (1) are provided with a support (16), and the inside of the support (16) is slidably provided with a support rod (4), and the bottom end of the support rod (4) is provided with a spiral ground plug (8), the side of the support (16) close to the bulletproof cloth bag (1) is provided with a fixed ring (5), and the bulletproof cloth bag (1) is provided with a damping spring (2), and the two ends of the damping spring (2) are respectively provided with a first hook (6) and a second hook (7), and the first hook (6) and the second hook (7) are respectively installed in the inside of the fixed ring (5) and the hanging ring (9).

2. The safety protection structure for drilling and blasting excavation of a tunnel according to claim 1, characterized in that: The outer surface of the support rod (4) is fixedly connected with a mounting seat (17), and the inside of the mounting seat (17) is provided with an auxiliary ground plug (10).

3. The safety protection structure for drilling and blasting excavation of a tunnel according to claim 2, characterized in that: The outer surface of the auxiliary ground plug (10) is provided with a plug hole (19), the outside of the auxiliary ground plug (10) is provided with a floor (11), and the outer surface of the floor (11) is provided with a positioning hole (18), the inside of the positioning hole (18) and the plug hole (19) is slidably provided with a plug rod (12), and both ends of the plug rod (12) are threadedly connected with a nut.

4. The safety protection structure for drilling and blasting excavation of a tunnel according to claim 3, characterized in that: The bulletproof cloth bag (1) and the buffer water bag (13) are transparent materials.

5. The safety protection structure for drilling and blasting excavation of a tunnel according to claim 4, characterized in that: The outer surface of the threaded joint (20) is provided with a traction rope (22), and the bottom end of the traction rope (22) is rotatably connected with the threaded cap (21).

6. The safety protection structure for drilling and blasting excavation of a tunnel according to claim 5, characterized in that: The top end of the support rod (4) is provided with a handle (3), and the outer surface of the handle (3) is provided with an anti-skid sleeve.

7. The safety protection structure for drilling and blasting excavation of a tunnel according to claim 6, characterized in that: The back of the bulletproof cloth bag (1) is provided with a storage bag (14).

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