Blasting area covering and protecting device for fine blasting excavation
By setting a buffer pad layer and a wire mesh layer covering the borehole, combined with a counterweight structure, the problem of borehole throwing control in precision blasting was solved, achieving multiple benefits in terms of safety and environmental protection.
Patent Information
- Application Number
- CN202520105557.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-16
AI Technical Summary
In precision blasting excavation, how can we effectively control the throwing distance of the blast holes, reduce the impact on protected objects, and improve the safety of blasting operations?
Multiple borehole covering layers are set up facing the protected area from the air. The covering layer includes a composite buffer layer and a counterweight structure. The buffer layer consists of a buffer pad layer and a wire mesh layer. The buffer pad layer has tear resistance and elasticity, the wire mesh layer provides support, and the counterweight structure is used for stability. The size of the covering layer is designed to be 1/2 to 1/3 of the distance between adjacent boreholes, forming an uncovered area to control the throwing range.
It effectively reduces the height and range of rock fragments thrown during blasting, protects nearby objects, improves the safety of blasting operations, reduces noise, enhances stability, simplifies laying and facilitates recycling, and reduces damage to the surrounding environment.
Smart Images
Figure CN223856326U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of blasting excavation, in particular to the blast area covering protection device for fine blasting excavation. BACKGROUND
[0002] Fine blasting excavation is an advanced blasting technique, which emphasizes the precise control of explosive energy release and medium breaking, throwing and other processes through quantitative blasting design, careful blasting construction and fine management, especially suitable for large-scale engineering and complex excavation occasions. By fine blasting design for all blast holes in batches and checking the safety of blasting vibration, the precision of blasting equipment usage and the quality of blasting design are improved, and the blasting effect is optimized.
[0003] When facing a nearby protected object, it is necessary to control the throwing of blast holes, so how to minimize the throwing distance and facilitate subsequent cleaning of the blasting area becomes a problem to be solved. UTILITY MODEL CONTENT
[0004] In view of the technical problems existing in the prior art blasting protection, the utility model provides a blast area covering protection device for fine blasting excavation, which comprises a plurality of blast hole covering layers arranged by the free face to the protection area, the blast hole covering layer is arranged above the blast hole and completely covers the blast hole.
[0005] Among them, the size of each blast hole covering layer is 1 / 2-1 / 3 of the distance between the adjacent two blast holes, so that an uncovered area is formed between the adjacent two blast hole covering layers.
[0006] The blast hole covering layer comprises a composite buffer layer and a counterweight structure, the composite buffer layer comprises a buffer pad layer and a steel wire mesh layer, and the steel wire mesh layer is a three-dimensional mesh structure.
[0007] Preferably, the composite buffer layer comprises a buffer pad layer and a steel wire mesh layer, and the buffer pad layer is arranged below the steel wire mesh layer.
[0008] Preferably, the composite buffer layer comprises two buffer pad layers and two steel wire mesh layers, the two buffer pad layers and the two steel wire mesh layers are arranged alternately, the first buffer pad layer is below the first steel wire mesh layer, and the second buffer pad layer is below the second steel wire mesh layer.
[0009] Preferably, the size of the first buffer pad layer is smaller than that of the second buffer pad layer, and the thickness of the first buffer pad layer is greater than that of the second buffer pad layer.
[0010] Preferably, the buffer pad layer is a square rubber pad, and a plurality of holes and cavities are arranged on the rubber pad, the holes penetrating the upper and lower end faces of the rubber pad, and the cavities being in the interior of the rubber pad.
[0011] Preferably, the size of the holes is less than 3cm*3cm.
[0012] Preferably, the thickness of the steel wire mesh layer is less than or equal to the thickness of the buffer pad layer, and the size of the steel wire mesh layer is greater than the size of the buffer pad layer.
[0013] Preferably, the mesh size of the steel wire mesh layer is less than 3cm*3cm.
[0014] Preferably, the counterweight structure comprises a plurality of sandbags, and the total weight of all the sandbags is greater than or equal to 50kg.
[0015] Preferably, the counterweight structure is arranged at the central position of the composite buffer layer.
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] The protective device provided by the utility model covers and protects the orifice of the blast hole, and the covering and buffering effects of the buffer pad layer and the steel wire mesh layer can reduce the throwing height and range of the broken stones during blasting, thereby protecting the nearby protected objects, and the laying mode is simple and convenient and is also beneficial to recycling and reuse. For fine blasting, the protective device can bring multiple benefits such as buffering and shock absorption, noise reduction, stability enhancement and prevention of stone sliding, and plays an important role in improving the safety of blasting operations and reducing the damage to the surrounding environment. BRIEF DESCRIPTION OF DRAWINGS
[0018] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical, or nearly identical, component that is illustrated in various figures is represented with a like numeral. For purposes of clarity, not every component is called out in every drawing. Therein:
[0019] Figure 1 is a structural schematic view of the blast area covering and protecting device for fine blasting excavation shown in the utility model;
[0020] Figure 2 is a structural schematic view of the blast hole covering layer shown in the utility model;
[0021] Figure 3 is a structural schematic view of the buffer pad layer shown in the utility model. DETAILED DESCRIPTION
[0022] In order to understand the technical content of the utility model more, specific embodiments are raised and the following is described with the attached drawings.
[0023] Combining Figure 1 As shown in the utility model discloses a kind of blast area covering protective devices for fine blasting excavation, including the multiple blast hole covering layer 101 being set by the free surface 200 to protection area 100, blast hole covering layer 101 is set in the upper of blast hole 10, and completely covers blast hole 10.
[0024] Blast hole covering layer 101 is set on the upper layer of blast hole 10, can avoid generating thrown too high's gravel, therefore can effectively form protection to the protection object of one side of blasting area.
[0025] In alternative embodiments, multiple blast holes 10 are arranged in the manner of plum blossom hole arrangement, then blast hole covering layer 101 is also arranged in the manner of plum blossom, as shown in the figure, Figure 1 Multiple blast hole covering layers 101 are alternately arranged.
[0026] Among them, the size of each blast hole covering layer 101 is 1 / 2~1 / 3 of the interval between adjacent two blast holes 10, so that an uncovered area 102 is formed between adjacent two blast hole covering layers 101.
[0027] In this way, blast hole covering layer 101 only serves to reduce the height of thrown gravel, and does not affect the formation of blasting crater and new free surface when blast hole is blasted, so as not to affect the blasting excavation effect.
[0028] Combining Figure 2 As shown in the figure, blast hole covering layer 101 includes a composite buffer layer and a counterweight structure 30, the composite buffer layer includes a buffer pad layer 21 and a steel wire mesh layer 22, and the steel wire mesh layer 22 is a three-dimensional mesh structure.
[0029] The buffer pad layer 21 has good tear resistance and elasticity, and can buffer the high-speed gravel generated by blasting, and the steel wire mesh layer 22 can provide support and also form an air buffer layer, which can reduce the impact of shock wave and the noise generated by blasting.
[0030] In alternative embodiments, during arrangement, if the blast hole is far away from the protection object, the composite buffer layer adopts one buffer pad layer 21 and one steel wire mesh layer 22, and the buffer pad layer 21 is arranged below the steel wire mesh layer 22.
[0031] In alternative embodiments, during arrangement, if the blast hole is close to the protection object, the composite buffer layer includes two buffer pad layers 21 and two steel wire mesh layers 22, and the two buffer pad layers 21 and the two steel wire mesh layers 22 are alternately arranged, the first buffer pad layer is below the first steel wire mesh layer, and the second buffer pad layer is below the second steel wire mesh layer.
[0032] In this way, by increasing the number of the cushion layers 21 and the wire mesh layers 22, a better protection effect is achieved.
[0033] The first cushion layer has a size smaller than that of the second cushion layer and a thickness greater than that of the second cushion layer.
[0034] In this way, the labor intensity of laying can be reduced as a whole. The lower cushion layer 21 mainly plays a buffering role on the rocks thrown above the blast hole. The upper cushion layer 21 avoids the expansion of the range of the flying rocks and the excessive height of the rocks by the deformation and the constraint effect of the large size, thereby achieving a good protection effect as a whole.
[0035] In combination with Figure 3 As shown in the optional embodiment, the cushion layer 21 is a square rubber pad, and a plurality of holes 211 and cavities 212 are arranged on the rubber pad. The holes 211 penetrate the upper and lower end surfaces of the rubber pad, and the cavities 212 are arranged in the interior of the rubber pad.
[0036] The cavities 212 can provide more buffering effect, and the holes 211 are beneficial to the diffusion of energy and can avoid the tearing of the cushion layer 21.
[0037] The size of the hole 211 is less than 3cm*3cm.
[0038] Further, the thickness of the wire mesh layer 22 is less than or equal to the thickness of the cushion layer 21, and the size of the wire mesh layer 22 is greater than the size of the cushion layer 21. Since the wire mesh layer 22 has better flexibility than the cushion layer 21, the wire mesh layer 22 is laid on the upper layer of the cushion layer 21. When the cushion layer 21 is deformed under the impact, the wire mesh layer 22 can produce greater deformation buffering and provide support for the cushion layer 21.
[0039] The mesh size of the wire mesh layer is less than 3cm*3cm.
[0040] Further, the counterweight structure 30 includes a plurality of sandbags, and the total weight of all the sandbags is greater than or equal to 50kg. Preferably, the counterweight structure 30 is arranged at the central position of the composite cushion layer. In this way, the cushion layer 21 and the wire mesh layer 22 are prevented from flying out under the action of the impact force, and subsequent collection is facilitated.
[0041] In combination with the above embodiments, the protective device is used for covering and protecting the orifice of the blast hole, the covering and buffering of the buffer layer and the steel wire mesh layer can reduce the throwing height and range of the broken stones during blasting, the nearby protected objects are protected, the laying mode is simple and convenient, and is also beneficial to recycling and reuse, for fine blasting, the buffer damping, noise reduction, stability enhancement, and prevention of stone sliding and other multiple benefits can be brought, and the blasting operation safety is improved and the damage to the surrounding environment is reduced, which plays an important role.
[0042] Although the utility model has disclosed as above with preferable embodiments, it is not used to limit the utility model. Those skilled in the art of the utility model belong to, without departing from the spirit and scope of the utility model, can make various changes and decorations. Therefore, the protection scope of the utility model should be defined by the claims.
Claims
1. A blast area cover for fine blasting excavation, characterized in that The application relates to a protective area (100) provided with a plurality of blast-hole covering layers (101) by an air space (200), wherein the blast-hole covering layers (101) are arranged above blast holes (10) and completely cover the blast holes (10). The size of each blast-hole covering layer (101) is 1 / 2-1 / 3 of the interval between two adjacent blast holes (10), so that an uncovered area (102) is formed between two adjacent blast-hole covering layers (101). The blast-hole covering layer (101) comprises a composite buffer layer and a counterweight structure (30), wherein the composite buffer layer comprises a buffer pad layer (21) and a steel mesh layer (22), and the steel mesh layer (22) is a three-dimensional mesh structure.
2. A blast area coverage protection device for precision blasting excavation according to claim 1, characterized in that, The composite buffer layer comprises a buffer pad layer (21) and a steel mesh layer (22), and the buffer pad layer (21) is arranged below the steel mesh layer (22).
3. A blast area coverage protection device for precision blasting excavation according to claim 1, characterized in that, The composite buffer layer comprises two buffer pad layers (21) and two steel mesh layers (22), and the two buffer pad layers (21) and the two steel mesh layers (22) are arranged alternately, wherein a first buffer pad layer is arranged below a first steel mesh layer, and a second buffer pad layer is arranged below a second steel mesh layer.
4. A blast area coverage protection device for precision blasting excavation according to claim 3, characterized in that, The size of the first buffer pad layer is smaller than that of the second buffer pad layer, and the thickness of the first buffer pad layer is greater than that of the second buffer pad layer.
5. A blast area coverage protection device for precision blasting excavation according to any one of claims 1-4, characterized in that, The buffer pad layer (21) is a square rubber pad, and a plurality of holes (211) and cavities (212) are arranged on the rubber pad, the holes (211) penetrate the upper and lower end faces of the rubber pad, and the cavities (212) are arranged in the rubber pad.
6. A blast area coverage protection device for precision blasting excavation according to claim 5, characterized in that, The size of the hole (211) is less than 3cm*3cm.
7. A blast area coverage protection device for precision blasting excavation according to any one of claims 1-4, characterized in that, The thickness of the steel mesh layer is less than or equal to the thickness of the buffer pad layer (21), and the size of the steel mesh layer is greater than that of the buffer pad layer (21).
8. A blast area coverage protection device for precision blasting excavation according to claim 1, characterized in that, The mesh size of the steel mesh layer is less than 3cm*3cm.
9. A blast area coverage protection device for precision blasting excavation according to claim 1, characterized in that, The counterweight structure (30) comprises a plurality of sandbags, and the total weight of all the sandbags is greater than or equal to 50kg.
10. A blast area coverage protection device for precision blasting excavation according to claim 1, characterized in that, The counterweight structure (30) is arranged at the central position of the composite buffer layer.