Buffering gun barrel with controllable directional isolation range
By buffering the sliding valve mechanism and energy-dissipating materials of the barrel through the controllable directional isolation range, the problem of inaccurate blasting during tunnel excavation is solved, and directional blasting and surrounding rock stability is achieved, reducing construction complexity and cost.
Patent Information
- Application Number
- CN202421814830.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-30
AI Technical Summary
Traditional blasting technology has problems such as over-excavation, under-excavation, irregularity in surrounding rock damage, difficulty in controlling blasting strength, and inability to achieve directional range blasting in tunnel excavation, resulting in construction difficulties and unstable surrounding rocks.
The barrel is buffered by a controlled directional isolation range, and the explosion wave is absorbed through the sliding valve mechanism and energy-dissipating material to realize the directional propagation and directional isolation of the explosion wave. The sliding valve mechanism is used to adjust the isolation range, fix the medicine roll and seal the gun hole, and control the blasting effect.
It realizes precise control of tunnel excavation, reduces surrounding rock disturbances, improves blasting effect, saves costs and ensures surrounding rock stability.
Smart Images
Figure CN223077561U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel excavation by drilling and blasting method, in particular to a controllable directional isolation range buffer cartridge. Background Technique
[0002] Blasting technology is an engineering technology that uses the energy of explosive explosion to destroy the original structure of a certain object and realizes different engineering purposes by means of charge layout and initiation method. Since blasting technology can save a large amount of manpower and material resources, it has been widely used in tunnel excavation at present. However, there are the following problems: (1) The irregularity of the damage to the surrounding rock by traditional blasting often causes accidents such as over-excavation, under-excavation, and even collapse during the tunnel excavation process. The problem of tunnel over-excavation is serious, usually reaching more than 30 cm, which makes the later support difficult, and the thickness of the secondary lining needs to be increased, resulting in an increase in the construction period and material cost; (2) The amount of explosive and the drilling and blasting design parameters in the tunnel excavation by drilling and blasting method are unreasonable, and the smooth blasting effect cannot be achieved; (3) When excavating a tunnel, it is necessary to maintain the good stability of the surrounding rock, but the traditional blasting technology is difficult to control the blasting intensity, and the degree of damage and disturbance to the rock mass is large, which is not conducive to the subsequent stable support of the tunnel; (4) The over-excavation and under-excavation of the tunnel are related to the layout of the peripheral holes on the heading face and the propagation of the explosion wave. The traditional method of placing cartridges cannot achieve directional range blasting of the rock mass on the heading face, which will also lead to over-excavation of the tunnel and failure to achieve the smooth blasting effect. Summary of the Invention
[0003] The purpose of the utility model is to provide a controllable directional isolation range buffer cartridge according to the deficiencies of the above-mentioned prior art. One side of the controllable directional isolation range buffer cartridge is a hollow semi-cylinder composed of a toothed slidable outer sliding flap and an inner sliding flap, which is filled with energy-absorbing material, and the other side is a ring-banded cartridge placement cylinder for fixing the cartridge. The controllable directional isolation range buffer cartridge filled with cartridges is placed into the peripheral blast holes of the rock mass on the heading face, and is blocked with a blocking material, and the cartridge is detonated. The explosion wave propagates circumferentially, and the energy-absorbing material absorbs the explosion wave and prevents it from propagating into the rock mass. The explosion wave on the other side directly propagates into the rock mass, causing the rock mass to rupture, realizing the directional propagation and directional isolation of the explosion wave, making the rock mass that needs to be blasted broken and the rock mass that does not need to be blasted remain intact, solving the problem of tunnel over-excavation and under-excavation, and reducing the disturbance to the surrounding rock; at the same time, the sliding outer sliding flap and the inner sliding flap can be adjusted to reduce or enlarge the directional isolation range, improving the blasting effect.
[0004] The purpose of the utility model is achieved by the following technical solutions:[[]]
[0005] A controllable directional isolation range buffer barrel, the controllable directional isolation range buffer barrel includes a sliding flap mechanism and a cartridge placement cylinder arranged coaxially. An energy dissipation material is filled between the sliding flap mechanism and the cartridge placement cylinder. The cartridge placement cylinder includes a semi-circular inner cylinder and a hoop. The semi-circular inner cylinder is used to place cartridges, and the hoop is arranged at both ends of the semi-circular inner cylinder and is used to fix the cartridges. The sliding flap mechanism is composed of an outer sliding flap and an inner sliding flap. Both the outer sliding flap and the inner sliding flap move along the outer arc of the semi-circular inner cylinder, and the inner sliding flap is arranged inside the outer sliding flap.
[0006] The outer sliding flap includes an outer sliding flap side plate, an outer sliding flap axial end plate, and an outer sliding flap radial end plate. The outer sliding flap side plate is an arc plate. The outer sliding flap radial end plates are provided at both radial ends of the outer sliding flap side plate, and the outer sliding flap axial end plate is provided at one axial end of the outer sliding flap side plate. The inner sliding flap includes an inner sliding flap side plate, an inner sliding flap axial end plate, and an inner sliding flap radial end plate. The inner sliding flap side plate is an arc plate. The inner sliding flap radial end plates are provided at both radial ends of the inner sliding flap side plate, and the inner sliding flap axial end plate is provided at one axial end of the inner sliding flap side plate.
[0007] Two outer cylinder outer sliding flap chutes and two outer cylinder inner sliding flap chutes are arranged along the outer arc of the semi-circular inner cylinder. An outer sliding flap radial end plate slider that cooperates with the outer cylinder outer sliding flap chute is connected to the outer sliding flap radial end plate, and an inner sliding flap radial end plate slider that cooperates with the outer cylinder inner sliding flap chute is connected to the inner sliding flap radial end plate.
[0008] The outer sliding flap side plate is alternately provided with outer sliding flap sliding teeth and outer sliding flap sliding grooves along its inner side axially. Both the outer sliding flap sliding teeth and the outer sliding flap sliding grooves are arranged along the arc of the outer sliding flap side plate. The inner sliding flap side plate is alternately provided with inner sliding flap sliding teeth and inner sliding flap sliding grooves along its outer side axially. Both the inner sliding flap sliding teeth and the inner sliding flap sliding grooves are arranged along the arc of the inner sliding flap side plate. The outer sliding flap sliding teeth cooperate with the inner sliding flap sliding grooves, and the inner sliding flap sliding teeth cooperate with the outer sliding flap sliding grooves.
[0009] The energy dissipation material is filled in the enclosed space formed by the outer sliding flap side plate, the outer sliding flap axial end plate, the outer sliding flap radial end plate, the inner sliding flap side plate, the inner sliding flap axial end plate, and the inner sliding flap radial end plate.
[0010] The size and shape of the cartridge placement holes of the cartridge placement cylinder respectively correspond to the size and shape of the cartridges.
[0011] The controllable directional isolation range buffer barrel equipped with the cartridges is placed in the peripheral blast holes of the tunnel face rock mass, and the peripheral blast holes are blocked with a blocking material.
[0012] The advantages of the present utility model are as follows:
[0013] (1) The energy dissipation material absorbs the blast wave and prevents it from propagating into the rock mass. On the other side, the blast wave directly propagates into the rock mass, causing the rock mass to crack. It can achieve the directional propagation and directional isolation of the blast wave, break the rock mass that needs to be blasted, and keep the rock mass that does not need to be blasted intact. It can not only solve the problem of overbreak and underbreak in the tunnel, but also reduce the disturbance to the surrounding rock.
[0014] (2) The buffer barrel with a controllable directional isolation range can be reused, saving costs.
[0015] (3) The sliding outer sliding flap and inner sliding flap can be adjusted to narrow or enlarge the directional isolation range, improving the blasting effect.
[0016] (4) The hoop can fix the cartridge, and it is convenient to install the cartridge. Description of the Drawings
[0017] Figure 1 It is a schematic diagram (1) of the buffer barrel with a controllable directional isolation range of the present utility model;
[0018] Figure 2 It is a schematic diagram (2) of the buffer barrel with a controllable directional isolation range of the present utility model;
[0019] Figure 3 It is Figure 2 The sectional view of A-A in
[0020] Figure 4 It is Figure 2 The sectional view of B-B in
[0021] Figure 5 It is Figure 2 The sectional view of C-C in
[0022] Figure 6 It is an assembly schematic diagram of the buffer barrel with a controllable directional isolation range of the present utility model and the cartridge;
[0023] Figure 7 It is a schematic diagram of the principle of isolating the blast wave by the buffer barrel with a controllable directional isolation range of the present utility model;
[0024] As Figures 1 to 7 shown, the marks in the figure are respectively represented as:
[0025] 1. Buffer barrel with a controllable directional isolation range, 2. Cartridge, 3. Face rock mass, 4. Sealing material, 5. Blast wave, 6. Crack;
[0026] 11. Outer sliding flap, 12. Inner sliding flap, 13. Cartridge placement cylinder, 14. Energy dissipation material;
[0027] 111. Outer sliding flap side plate, 112. Outer sliding flap axial end plate, 113. Outer sliding flap radial end plate, 114. Outer sliding flap sliding teeth, 115. Outer sliding flap sliding groove, 116. Outer sliding flap radial end plate slider;
[0028] 121. Inner sliding flap side plate, 122. Inner sliding flap axial end plate, 123. Inner sliding flap radial end plate, 124. Inner sliding flap sliding teeth, 125. Inner sliding flap sliding groove, 126. Inner sliding flap radial end plate slider;
[0029] 131. Hoop, 132. Semi-circular inner cylinder, 133. Cartridge placement hole, 134. Outer cylinder outer sliding flap chute, 135. Outer cylinder inner sliding flap chute. Specific embodiments
[0030] The features of the present utility model and other related features will be further described in detail below with reference to the accompanying drawings through embodiments for the understanding of those skilled in the same industry:
[0031] Embodiment: As Figures 1 to 7 shown, this embodiment relates to a controllable directional isolation range buffer gun barrel. The controllable directional isolation range buffer gun barrel 1 mainly includes a sliding flap mechanism, a cartridge placement cylinder 13, and an energy dissipation material 14. The sliding flap mechanism and the cartridge placement cylinder 13 are coaxially arranged, and the energy dissipation material 14 is filled between the sliding flap mechanism and the cartridge placement cylinder 13. In this embodiment, the energy dissipation material 14 can be rubber, particulate material, liquid material, or porous material. The size and shape of the cartridge placement hole 133 of the cartridge placement cylinder 13 respectively correspond to the size and shape of the cartridge 2 to ensure the reliability of the installation of the cartridge 2. Specifically, the cartridge placement cylinder 13 includes a semi-circular inner cylinder 132 and a hoop 131. The semi-circular inner cylinder 132 is used to place the cartridge 2, and the hoop 131 is arranged at both ends of the semi-circular inner cylinder 132 and is used to fix the cartridge 2. The sliding flap mechanism is composed of an outer sliding flap 11 and an inner sliding flap 12. Both the outer sliding flap 11 and the inner sliding flap 12 move along the outer arc of the semi-circular inner cylinder 132, and the inner sliding flap 12 is arranged inside the outer sliding flap 11. By adjusting the size of the arc space between the outer sliding flap 11 and the inner sliding flap 12, the filling amount of the energy dissipation material 14 is changed, so as to achieve the purpose of reducing or enlarging the directional isolation range.
[0032] As Figures 1 to 6As shown in the figure, the outer sliding flap 11 includes an outer sliding flap side plate 111, an outer sliding flap axial end plate 112, and an outer sliding flap radial end plate 113. The outer sliding flap side plate 111 is an arc plate. One outer sliding flap radial end plate 113 is provided at each of the two radial ends of the outer sliding flap side plate 111, and one outer sliding flap axial end plate 112 is provided at one axial end of the outer sliding flap side plate 111. The inner sliding flap 12 includes an inner sliding flap side plate 121, an inner sliding flap axial end plate 122, and an inner sliding flap radial end plate 123. The inner sliding flap side plate 121 is an arc plate. One inner sliding flap radial end plate 123 is provided at each of the two radial ends of the inner sliding flap side plate 121, and one inner sliding flap axial end plate 122 is provided at one axial end of the inner sliding flap side plate 121. The energy dissipation material 14 is filled in the enclosed space formed by the outer sliding flap side plate 111, the outer sliding flap axial end plate 112, the outer sliding flap radial end plate 113, the inner sliding flap side plate 121, the inner sliding flap axial end plate 122, and the inner sliding flap radial end plate 123. Two outer cylinder outer sliding flap chutes 134 and two outer cylinder inner sliding flap chutes 135 are provided along the outer arc of the semi-circular inner cylinder 132. An outer sliding flap radial end plate slider 116 is connected to the outer sliding flap radial end plate 113, and an inner sliding flap radial end plate slider 126 is connected to the inner sliding flap radial end plate 123. The shape and size of the outer sliding flap radial end plate slider 116 respectively match the shape and size of the outer cylinder outer sliding flap chute 134, realizing the sliding of the outer sliding flap radial end plate 113 on the semi-circular inner cylinder 132. The shape and size of the inner sliding flap radial end plate slider 126 respectively match the shape and size of the outer cylinder inner sliding flap chute 135, realizing the sliding of the inner sliding flap radial end plate 123 on the semi-circular inner cylinder 132. Outer sliding flap sliding teeth 114 and outer sliding flap sliding grooves 115 are alternately provided along the inner axial direction of the outer sliding flap side plate 111, and both the outer sliding flap sliding teeth 114 and the outer sliding flap sliding grooves 115 are provided along the arc direction of the outer sliding flap side plate 111. Inner sliding flap sliding teeth 124 and inner sliding flap sliding grooves 125 are alternately provided along the outer axial direction of the inner sliding flap side plate 121, and both the inner sliding flap sliding teeth 124 and the inner sliding flap sliding grooves 125 are provided along the arc direction of the inner sliding flap side plate 121. The shape and size of the outer sliding flap sliding teeth 114 respectively match the shape and size of the inner sliding flap sliding grooves 125, and the shape and size of the inner sliding flap sliding teeth 124 respectively match the shape and size of the outer sliding flap sliding grooves 115, ensuring the mutual sliding between the outer sliding flap side plate 111 and the inner sliding flap side plate 121. The mutual sliding between the outer sliding flap 11 and the inner sliding flap 12 realizes the adjustment of the size of the arc-shaped space between the outer sliding flap 11 and the inner sliding flap 12.
[0033] As Figure 7As shown, according to actual needs, adjust the space between the outer sliding flap 11 and the inner sliding flap 12 and fill it with energy-absorbing material 14. Place the controllable directional isolation range buffer cartridge 1 containing the explosive cartridge 2 into the peripheral blast holes of the tunnel face rock mass 3, and use a plugging material 4 (select mortar or plugging mud) to plug the peripheral blast holes. Detonate the explosive cartridge 2, and the explosion wave 5 propagates circumferentially. The energy-absorbing material 14 absorbs the explosion wave 5 to prevent it from propagating into the rock mass. On the other side, the explosion wave 5 directly propagates into the rock mass, causing the rock mass to rupture (cracks 6 are generated), realizing the directional propagation and directional isolation of the explosion wave 5, breaking the rock mass that needs to be blasted, and keeping the rock mass that does not need to be blasted intact.
[0034] The beneficial technical effects of this embodiment are as follows:
[0035] (1) The energy-absorbing material absorbs the explosion wave to prevent it from propagating into the rock mass. On the other side, the explosion wave directly propagates into the rock mass, causing the rock mass to rupture, which can realize the directional propagation and directional isolation of the explosion wave, break the rock mass that needs to be blasted, and keep the rock mass that does not need to be blasted intact. It can not only solve the problem of overbreak and underbreak in tunnels, but also reduce the disturbance to the surrounding rock.
[0036] (2) The controllable directional isolation range buffer cartridge can be reused, saving costs.
[0037] (3) The sliding outer flap and the inner flap can be adjusted to reduce or enlarge the directional isolation range, improving the blasting effect.
[0038] (4) The hoop can fix the explosive cartridge and is convenient for installing the explosive cartridge.
[0039] Although the above embodiments have described in detail the concept and implementation of the purpose of the present invention with reference to the drawings, those of ordinary skill in the art can recognize that various improvements and transformations can still be made to the present invention without departing from the scope defined by the claims. Therefore, they are not elaborated here one by one.
Claims
1. A controllable directional isolation range buffer barrel, characterized in that: The controllable directional isolation range buffer barrel includes a sliding flap mechanism and a cartridge placing cylinder arranged coaxially. An energy dissipation material is filled between the sliding flap mechanism and the cartridge placing cylinder. The cartridge placing cylinder includes a semi-circular inner cylinder and a hoop. The semi-circular inner cylinder is used for placing cartridges, and the hoop is arranged at both ends of the semi-circular inner cylinder and is used for fixing the cartridges. The sliding flap mechanism is composed of an outer sliding flap and an inner sliding flap. Both the outer sliding flap and the inner sliding flap move along the outer arc of the semi-circular inner cylinder, and the inner sliding flap is arranged inside the outer sliding flap.
2. The controllable directional isolation range buffer barrel according to claim 1, wherein: The outer sliding flap includes an outer sliding flap side plate, an outer sliding flap axial end plate, and an outer sliding flap radial end plate. The outer sliding flap side plate is an arc plate. The outer sliding flap radial end plates are arranged at both radial ends of the outer sliding flap side plate, and the outer sliding flap axial end plate is arranged at one axial end of the outer sliding flap side plate. The inner sliding flap includes an inner sliding flap side plate, an inner sliding flap axial end plate, and an inner sliding flap radial end plate. The inner sliding flap side plate is an arc plate. The inner sliding flap radial end plates are arranged at both radial ends of the inner sliding flap side plate, and the inner sliding flap axial end plate is arranged at one axial end of the inner sliding flap side plate.
3. The controllable directional isolation range buffer barrel according to claim 2, characterized in that: Two outer cylinder outer sliding flap chutes and two outer cylinder inner sliding flap chutes are arranged along the outer arc of the semi-circular inner cylinder. An outer sliding flap radial end plate slider matched with the outer cylinder outer sliding flap chute is connected to the outer sliding flap radial end plate, and an inner sliding flap radial end plate slider matched with the outer cylinder inner sliding flap chute is connected to the inner sliding flap radial end plate.
4. A controllable directional isolation range buffer barrel according to claim 2, characterized in that: The outer sliding flap side plate is alternately provided with outer sliding flap sliding teeth and outer sliding flap sliding grooves along its inner side axially. Both the outer sliding flap sliding teeth and the outer sliding flap sliding grooves are arranged along the arc of the outer sliding flap side plate. The inner sliding flap side plate is alternately provided with inner sliding flap sliding teeth and inner sliding flap sliding grooves along its outer side axially. Both the inner sliding flap sliding teeth and the inner sliding flap sliding grooves are arranged along the arc of the inner sliding flap side plate. The outer sliding flap sliding teeth are matched with the inner sliding flap sliding grooves, and the inner sliding flap sliding teeth are matched with the outer sliding flap sliding grooves.
5. The controllable directional isolation range buffer barrel according to claim 2, characterized in that: The energy dissipation material is filled in the enclosed space formed by the outer sliding flap side plate, the outer sliding flap axial end plate, the outer sliding flap radial end plate, the inner sliding flap side plate, the inner sliding flap axial end plate, and the inner sliding flap radial end plate.
6. The controllable directional isolation range buffer barrel according to claim 1, characterized in that: The size and shape of the cartridge placing hole of the cartridge placing cylinder respectively correspond to the size and shape of the cartridge.
7. A controllable directional isolation range buffer barrel as claimed in claim 1, characterized in that: The controllable directional isolation range buffer barrel filled with the cartridge is placed in the peripheral blast holes of the tunnel face rock mass, and the peripheral blast holes are blocked with a blocking material.