Blasting structure suitable for mine interval detonation

Abstract

The utility model discloses a blasting structure suitable for mine interval blasting. The blasting structure comprises the ground, a plurality of sets of blasting grooves formed in the ground, a bottom frame placed in the blasting grooves, an inclined frame placed on the top of the bottom frame, a connecting plate connected to the top of the inclined frame in a clamped mode and a top containing frame placed on the top of the connecting plate. According to the utility model, a plurality of groups of blasting grooves are arranged on the ground in an equilateral triangle state, so that the linear distances among the blasting grooves are the same, and the blasting distances of explosives in each group of blasting grooves to the periphery are consistent when blasting, therefore, compared with the blasting grooves which are arranged in a rectangular or other shape, the blasting efficiency is improved. And the situation that flagstones in different states or broken stones in different states are generated at different positions after the explosive is exploded due to different distances is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine blasting, and particularly relates to a blasting structure suitable for interval initiation in mines. Background Art

[0002] Open-pit mining operations mainly include drilling, blasting, loading, transportation, and dumping. Blasting is a very important part among them, and the blasting cost accounts for 15%-20% of the total cost of open-pit mining. Moreover, the quality of blasting directly affects the efficiency of equipment such as loading, transportation, and primary crushing, as well as the total cost of the mine.

[0003] The utility model patent with the domestic application number 202221295198.7 discloses a mine blasting charge design structure, including a pipe body. At the top end inside the pipe body, there is an upper reserved cavity, and inside the upper reserved cavity, there is upper explosive. At the bottom end inside the pipe body, there is a lower reserved cavity, and inside the lower reserved cavity, there is lower explosive. Inside both the upper explosive and the lower explosive, there are detonators. A detonating fuse passes through the inside of the pipe body. On both sides inside the upper reserved cavity and the lower reserved cavity, there are auxiliary structures, and inside the upper reserved cavity and the lower reserved cavity, there are opening and closing structures. By setting the auxiliary structure in the utility model, when the upper explosive and the lower explosive explode, through the reserved grooves arranged on both sides of the upper reserved cavity and the lower reserved cavity, and horizontal bars and vertical bars are fixed inside the reserved grooves. While reducing the strength of the pipe body, the horizontal bars and vertical bars can limit the explosive inside the pipe body, thereby enabling the pipe body to explode quickly and ensuring the power of the explosive when it explodes. When the above-mentioned utility model is actually used, the reserved holes are generally square or rectangular, which will result in different explosion effects between the holes, and a large amount of broken stones will be generated between the blasting holes that are far apart, which is not conducive to the subsequent processing of the ore. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a blasting structure suitable for interval initiation in mines, including the ground, multiple groups of blasting grooves opened on the ground, a bottom frame placed inside the blasting grooves, an inclined frame placed on the top of the bottom frame, a connecting plate clamped on the top of the inclined frame, and a top placing frame placed on the top of the connecting plate.

[0005] As a further preferred technical solution of the utility model; the blasting grooves are arranged in multiple groups in an equilateral triangle state and opened on the ground.

[0006] Arranged in multiple groups in an equilateral triangle state and opened on the ground, the linear distances between the blasting grooves are all the same, so that the blasting distances of the explosives inside each group of blasting grooves are consistent when blasting, thereby reducing the situation that different states of broken stones or different crushed stone states are generated at different positions after the explosive blasts due to different distances compared with the blasting grooves arranged in a rectangular or other shapes.

[0007] As a further preferred technical solution of the present utility model; a plurality of groups of cushion blocks are fixedly installed at the bottom of the chassis, the inclined frame is in an inclined state, and a plurality of groups of radiation ports are arranged in a circle on the outer part of the inclined frame.

[0008] The inclined frame is in an inclined state, resulting in the explosives placed inside the inclined frame being in an inclined state. While it is being detonated, a small part of the blasting range caused by it is adjusted, which can cause the explosives to blast obliquely upwards; the blasted stones have the same blasting force on both sides, resulting in the middle part of the stones after blasting being in a flaky shape, and the placement surfaces of the inclined frames inside different blasting grooves are the same, effectively reducing the number of flaky stones generated by the explosion.

[0009] As a further preferred technical solution of the present utility model; a plurality of groups of inwardly retracting plates are annularly installed at the top of the inclined frame, grooves are arranged between the inwardly retracting plates, and impact blocks are installed outside the inwardly retracting plates.

[0010] When the inwardly retracting plates are subjected to an outward blasting force inside, they are impacted outward by the impact blocks, thereby increasing the blasting force.

[0011] As a further preferred technical solution of the present utility model; a plurality of groups of connecting springs are installed at the bottom of the connecting plate, and a bottom plate is connected and installed through the connecting springs, and a frustum plate is installed at the bottom of the bottom plate.

[0012] By placing the frustum plate between the inwardly retracting plates at the bottom and squeezing it in a wedge shape, when the explosives at the top are detonated, the inwardly retracting plates are squeezed, so that the impact blocks outside them achieve an impact effect on the stones.

[0013] As a further preferred technical solution of the present utility model; wire passing holes are provided at the central positions of the frustum plate, the bottom plate and the connecting springs.

[0014] The setting of the wire passing holes facilitates the explosive wires placed inside the inclined frame at the bottom to extend along the blasting groove to the ground, realizing remote operation and ensuring safety.

[0015] As a further preferred technical solution of the present utility model; a plurality of groups of through ports are arranged outside the top placement frame, and placement ports are provided at both the top and the bottom thereof.

[0016] The setting of the placement ports facilitates the placement of explosives and at the same time facilitates the arrangement of explosive wires.

[0017] Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. Multiple groups are arranged on the ground in an equilateral triangle state, so that the linear distances between the blasting grooves are the same, and the blasting distances of the explosives inside each group of blasting grooves are consistent during blasting, thereby reducing, compared with the blasting grooves arranged in a rectangular or other shape, the situation that different states of crushed stones are generated at different positions after the explosives blast due to different distances, or the crushed stone states are different.

[0020] 2. The inclined rack is in an inclined state, resulting in the explosives placed inside the inclined rack being in an inclined state. While it is blasting, a small part of the blasting range is adjusted, which can cause the explosives to blast obliquely upward; the blasting force on both sides of the crushed stone is the same, resulting in the middle part of the stone being in a flaky shape after blasting, and the placement surfaces of the inclined racks inside different blasting grooves are the same, effectively reducing the number of crushed stones generated by the explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic explosion structural diagram of the present utility model;

[0023] Figure 3 is a schematic side view structural diagram of the present utility model;

[0024] Figure 4 is Figure 2 an enlarged structural diagram at A in

[0025] Figure 5 is a schematic hole position structural diagram of the present utility model.

[0026] In the figure: 1. Ground; 11. Blasting groove; 2. Top placement frame; 21. Through port; 22. Placement port; 3. Connecting plate; 31. Connecting spring; 32. Bottom plate; 33. Frustum plate; 34. Wire through hole; 4. Inclined rack; 41. Radiation port; 42. Inner receiving plate; 43. Groove; 44. Impact block; 5. Bottom frame; 51. Spacer block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] This specific embodiment is a blasting structure suitable for interval initiation in mines.

[0028] When the above-mentioned utility model is actually used, the reserved hole positions are generally square or rectangular, which will cause different explosion effects between the hole positions, and a large amount of crushed stones will be generated after blasting between the blasting hole positions that are far apart, which is not conducive to the subsequent processing of the ore.

[0029] Its structural schematic diagram is as shown in Figures 1 - 5As shown in the figure. A blasting structure suitable for interval blasting in mines includes the ground 1 and multiple groups of blasting grooves 11 opened on the ground 1. The blasting grooves 11 are arranged in multiple groups in an equilateral triangle state on the ground 1. Arranged in multiple groups in an equilateral triangle state on the ground 1, the linear distances between the blasting grooves 11 are the same, so that the blasting distances of the explosives inside each group of blasting grooves 11 are consistent when blasting, thus compared with the blasting grooves 11 arranged in a rectangular or other shapes, reducing the situation that different states of broken stones or different gravel states are generated at different positions after the explosives are blasted due to different distances. It also includes a chassis 5 placed inside the blasting groove 11. Multiple groups of cushion blocks 51 are fixedly installed at the bottom of the chassis 5. The inclined frame 4 is in an inclined state, and multiple groups of radiation ports 41 are opened on the outer circle of the inclined frame 4. The inclined state of the inclined frame 4 causes the explosives placed inside the inclined frame 4 to be in an inclined state. While blasting, it adjusts a small part of the blasting range caused by it, and can cause the explosives to blast obliquely upward; the blasting forces on both sides of the broken stones are the same, resulting in the middle part of the stones being sheet-shaped after blasting, and the placement surfaces of the inclined frames 4 inside different blasting grooves 11 are the same, effectively reducing the number of broken stones generated by the explosion.

[0030] It also includes an inclined frame 4 placed on the top of the chassis 5. Multiple groups of inwardly retracting plates 42 are annularly installed at the top of the inclined frame 4. Grooves 43 are opened between the inwardly retracting plates 42, and impact blocks 44 are installed outside the inwardly retracting plates 42. When the inwardly retracting plates 42 are subjected to an outward blasting force inside, they are impacted outward by the impact blocks 44, thereby increasing the blasting force. It also includes a connecting plate 3 clamped on the top of the inclined frame 4. Multiple groups of connecting springs 31 are installed at the bottom of the connecting plate 3, and a bottom plate 32 is connected and installed through the connecting springs 31. A conical plate 33 is installed at the bottom of the bottom plate 32. By placing the conical plate 33 between the inwardly retracting plates 42 at the bottom and squeezing in a wedge shape, when the explosives at the top are blasted, the inwardly retracting plates 42 are squeezed, so that the impact blocks 44 outside them achieve an impact effect on the stones. Through holes 34 are opened at the central positions of the conical plate 33, the bottom plate 32 and the connecting springs 31. The setting of the through holes 34 facilitates the explosive wires placed inside the inclined frame 4 at the bottom to extend along the blasting groove 11 to the ground 1, realizing remote operation and ensuring safety. It includes a top placement frame 2 placed on the top of the connecting plate 3. Multiple groups of through holes 21 are opened on the outside of the top placement frame 2, and placement openings 22 are opened at both the top and the bottom of it. The setting of the placement openings 22 facilitates the placement of explosives and at the same time facilitates the arrangement of explosive wires.

[0031] According to the requirements of the drawing, perforations are made on the surface of the ore that needs to be blasted. The hole positions need to be arranged in multiple groups in an equilateral triangle state on the ground 1, so that the linear distances between the blasting grooves 11 are the same, and the blasting distances of the explosives inside each group of blasting grooves 11 are consistent when blasting. Then, the chassis 5 is placed, and the explosives are placed into the inclined frame 4 and on top of the chassis 5. After the connecting plate 3 is placed on top of the inclined frame 4, the top placement frame 2 is placed on top of the connecting plate 3, and the corresponding explosives are filled into it for use.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] The above embodiment is a preferred implementation scheme of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A blasting structure suitable for interval initiation in mines, characterized in that It includes a ground (1), multiple groups of blasting grooves (11) formed on the ground (1), a chassis (5) placed inside the blasting grooves (11), an inclined frame (4) placed on top of the chassis (5), a connecting plate (3) clamped to the top of the inclined frame (4), and a top placement frame (2) placed on top of the connecting plate (3).

2. The blasting structure suitable for interval initiation in mines according to claim 1, wherein: The blasting grooves (11) are arranged in multiple groups in an equilateral triangle state on the ground (1).

3. A blasting structure suitable for interval initiation in a mine according to claim 2, characterized in that: Multiple groups of cushion blocks (51) are fixedly installed at the bottom of the chassis (5), the inclined frame (4) is in an inclined state, and multiple groups of radiation openings (41) are formed in a circle on the outside of the inclined frame (4).

4. A blasting structure suitable for interval initiation in mines according to claim 3, characterized in that: Multiple groups of inwardly retracting plates (42) are installed in a ring at the top of the inclined frame (4), grooves (43) are formed between the inwardly retracting plates (42), and impact blocks (44) are installed outside the inwardly retracting plates (42).

5. A blasting structure suitable for interval initiation in a mine according to claim 4, characterized in that: Multiple groups of connecting springs (31) are installed at the bottom of the connecting plate (3), and a bottom plate (32) is connected and installed through the connecting springs (31), and a frustum plate (33) is installed at the bottom of the bottom plate (32).

6. A blasting structure suitable for interval initiation in a mine according to claim 5, characterized in that: Through holes (34) are formed at the central positions of the frustum plate (33), the bottom plate (32), and the connecting springs (31).

7. A blasting structure suitable for interval initiation in mines according to claim 6, characterized in that: Multiple groups of through openings (21) are formed on the outside of the top placement frame (2), and placement openings (22) are formed at both the top and the bottom thereof.

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