Surface mine blasting damping ditch adjacent to tunnel

Abstract

The utility model discloses a surface mine blasting shock absorption ditch adjacent to a tunnel. The surface mine blasting shock absorption ditch comprises an earth surface, a blasting area, a protection area, a groove and a shock absorption structure. Water is injected into the buffer water bag through the main pipe and the water distribution pipe, then the inserting plate is inserted into the groove, the bottom plate is fixed in the groove, the damping plate is stressed to enable the buffer water bag to be attached to the wall face of a blasting area, and when the blasting area is blasted to generate seismic waves, the buffer water bag can resist the seismic waves. Water injected into the buffer water bag can counteract part of seismic waves, the buffer water bag can consume wave energy and reflect part of wave energy at the same time, the stressed damping plate can vibrate due to vibration waves, so that the wave energy is dissipated, and due to the fact that a certain distance exists between one end of the bottom plate and a protection area, the bottom plate does not make contact with the protection area. According to the damping device, corrugations transmitted to a protection area through the damping structure can be greatly reduced, damping is conducted through the damping structure, the installation stability is high, repeated use can be achieved, and meanwhile the damping capacity is improved.

Description

Technical Field

[0001] This utility model relates to the field of open-pit mining technology, specifically to an open-pit mine blasting vibration reduction trench located adjacent to a tunnel. Background Technology

[0002] The main production systems of open-pit mines include development and transportation systems, drilling and blasting and loading systems, spoil disposal systems, waterproofing and drainage systems, as well as production workshops for crushing, mineral processing, machine repair, vehicle repair, power supply, water supply, explosives preparation, and tailings dams. Some mines also have land reclamation systems. Open-pit mine blasting vibration damping trenches are a technical measure used to reduce the impact of blasting vibrations on the surrounding environment. They are mainly formed by pre-excavating trenches to create a vibration wave barrier.

[0003] The existing blasting vibration damping trenches have the following problems:

[0004] Most existing blasting vibration damping trenches are simple excavated trenches with simple structures and relatively low stability. Utility Model Content

[0005] The purpose of this utility model is to provide a shock-absorbing trench for blasting in open-pit mines adjacent to tunnels, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an open-pit mine blasting vibration damping trench adjacent to a tunnel, including a ground surface, on which a trench is provided, the ground surface can be divided into a blasting zone and a protection zone through the trench, a vibration damping structure is provided in the trench, the vibration damping structure includes a bottom plate, the bottom plate is provided in the trench, and a vibration damping plate is provided at the end of the bottom plate.

[0007] Preferably, when the damping plate is in its natural, unloaded state, it is tilted outwards.

[0008] Preferably, the bottom of the base plate is provided with two insert plates, which are located at both ends of the base plate respectively.

[0009] Preferably, when the insert plate is inserted into the ground, there is a certain distance between one end of the base plate and the protected area.

[0010] Preferably, the shock-absorbing plate is provided with a fixing ring, a water pipe is provided in the fixing ring, a sieve is connected to the opening of the water pipe, a water distribution pipe is fixed on the shock-absorbing plate, the water distribution pipe is connected to the water pipe, and a buffer water bag is fixed on the water distribution pipe.

[0011] Preferably, the lower end of the buffer water bag is provided with a clip, which is connected to the shock-absorbing plate.

[0012] Preferably, the surface of the buffer water bag is provided with a buffer layer, and the surface of the buffer layer is provided with a friction layer.

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

[0014] Water is injected into the buffer water bag through the main pipe and branch pipe. Then, the insert plate is inserted into the trench, and the base plate is fixed in the trench. At this time, the damping plate is stressed, causing the buffer water bag to adhere to the wall of the blast zone. When the blast zone explodes and generates seismic waves, the buffer water bag will resist the seismic waves. The water injected into the buffer water bag can offset part of the seismic waves, and the buffer water bag can also consume wave energy and reflect some wave energy. The damping plate under stress can vibrate due to the vibration waves, thereby dissipating wave energy. Since there is a certain distance between one end of the base plate and the protected area, the base plate does not contact the protected area, which can greatly reduce the transmission of ripples to the protected area through the damping structure. The damping structure has high installation stability, can be reused, and improves the damping capacity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view schematic diagram of the trench structure of this utility model;

[0017] Figure 3 This is a front view schematic diagram of the shock-absorbing structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the shock-absorbing plate of this utility model in its natural state without being subjected to force.

[0019] Figure 5 This is a schematic cross-sectional view of the buffer water bag of this utility model.

[0020] In the diagram: Surface-1, Blasting Zone-11, Protection Zone-12, Trench-2, Vibration Damping Structure-3, Base Plate-31, Vibration Damping Plate-32, Fixing Ring-33, Water Pipe-34, Screen-35, Water Distribution Pipe-36, Buffer Water Bag-37, Buffer Layer-371, Friction Layer-372, Clip-38, Insert Plate-39. Detailed Implementation

[0021] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0022] Please see Figure 1 and Figure 2 This utility model provides a shock-absorbing trench for blasting in an open-pit mine adjacent to a tunnel, including a ground surface 1, on which a trench 2 is excavated. The trench 2 can divide the ground surface 1 into a blasting zone 11 and a protection zone 12. A shock-absorbing structure 3 is provided in the trench 2.

[0023] Specifically, the air wave impedance in trench 2 is extremely low. The incident wave in blast zone 11 is strongly reflected at the trench wall interface, and the energy returns to the direction of the blast source. Only a small amount of energy is transmitted to the trench protection zone 12.

[0024] Please refer to Figure 2. Figure 3 , Figure 4 and Figure 5 This utility model provides a shock-absorbing trench for blasting in an open-pit mine adjacent to a tunnel. The shock-absorbing structure 3 includes a base plate 31. The lower end face of the base plate 31 is integrally formed with an insert plate 39. There are two insert plates 39, which are located at the left and right ends of the base plate 31 respectively. The insert plates 39 are inserted into the soil to fix the base plate 31 in the trench 2. At the same time, there is a certain distance between one end of the base plate 31 and the protected area 12, so that the base plate 31 does not contact the protected area 12. A shock-absorbing plate 32 is provided at the end of the base plate 31. When the shock-absorbing plate 32 is in a natural state without force, it is tilted outward.

[0025] In this utility model, a fixing ring 33 is provided on the shock-absorbing plate 32, a water pipe 34 is installed in the fixing ring 33, a sieve 35 is threadedly connected to the opening of the water pipe 34, a water distribution pipe 36 is fixed on the shock-absorbing plate 32, the water distribution pipe 36 is connected to the water pipe 34, and a buffer water bag 37 is fixed on the water distribution pipe 36.

[0026] The buffer water bag 37 has a clip 38 at its lower end, which is connected to the shock absorber 32. The surface of the buffer water bag 37 is provided with a buffer layer 371, which is made of sponge. The surface of the buffer layer 371 is provided with a friction layer 372, which can better protect the buffer water bag 37 and improve its durability.

[0027] Specifically, water is injected into the water pipe 34 through the sieve 35. The water enters the buffer water bag 37 through the water distribution pipe 36. Then, the insert plate 39 is inserted into the groove 2, thereby fixing the base plate 31 in the groove 2. At this time, the shock-absorbing plate 32 is stressed, causing the buffer water bag 37 to adhere to the wall of the blast zone 11. When the blast zone 11 explodes and generates seismic waves, the buffer water bag 37 will resist the seismic waves. The water injected into the buffer water bag 37 can offset part of the seismic waves. Moreover, the buffer water bag 37 can also consume wave energy and reflect some wave energy. The stressed shock-absorbing plate 32 can vibrate due to the vibration wave, thereby dissipating the wave energy. Since there is a certain distance between one end of the base plate 31 and the protected area 12, the base plate 31 does not contact the protected area 12, which can greatly reduce the transmission of ripples to the protected area 12 through the shock-absorbing structure 3. The shock-absorbing structure 3 provides high installation stability and can be reused, while improving the shock absorption capacity.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blasting vibration damping trench adjacent to a tunnel in an open-pit mine, comprising a surface (1), wherein a trench (2) is provided on the surface (1), and the surface (1) can be divided into a blasting zone (11) and a protection zone (12) through the trench (2), characterized in that: It also includes a shock-absorbing structure (3), in which a shock-absorbing structure (3) is provided in the groove (2), the shock-absorbing structure (3) includes a base plate (31), in which a base plate (31) is provided in the groove (2), and a shock-absorbing plate (32) is provided at the end of the base plate (31).

2. The open-pit mine blasting vibration damping trench adjacent to a tunnel as described in claim 1, characterized in that: When the damping plate (32) is in a natural, unforced state, it tilts outward.

3. The open-pit mine blasting vibration damping trench adjacent to a tunnel as described in claim 1, characterized in that: The bottom of the base plate (31) is provided with a plate (39), and there are two plates (39), which are located at both ends of the base plate (31).

4. The open-pit mine blasting vibration damping trench adjacent to a tunnel as described in claim 3, characterized in that: When the insert plate (39) is inserted into the ground surface (1), there is a certain distance between one end of the bottom plate (31) and the protected area (12).

5. The open-pit mine blasting vibration damping trench adjacent to a tunnel as described in claim 1, characterized in that: A fixing ring (33) is provided on the shock-absorbing plate (32), a water pipe (34) is provided in the fixing ring (33), a sieve (35) is connected to the opening of the water pipe (34), a water distribution pipe (36) is fixed on the shock-absorbing plate (32), the water distribution pipe (36) is connected to the water pipe (34), and a buffer water bag (37) is fixed on the water distribution pipe (36).

6. The open-pit mine blasting vibration damping trench adjacent to a tunnel as described in claim 5, characterized in that: The lower end of the buffer water bag (37) is provided with a clip (38), which is connected to the shock absorber (32).

7. The open-pit mine blasting vibration damping trench adjacent to a tunnel as described in claim 6, characterized in that: The surface of the buffer water bag (37) is provided with a buffer layer (371), and the surface of the buffer layer (371) is provided with a friction layer (372).

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