Blasting hole sealing positioner and positioning method

Abstract

The blasting hole sealing positioner and the positioning method, which are disclosed by the application, comprise a shell, the shell is composed of a connecting pipe, an abutting cylinder and a sealing joint, one end of the connecting pipe is connected with the abutting cylinder, the other end of the connecting pipe is connected with the sealing joint, a clamping jaw is arranged on the inner side of the connecting pipe, the clamping jaw is inserted into the blast hole through the connecting pipe, and a wire hole is further arranged on one side of the sealing joint for the lead wire to pass through. The specific steps of the positioning method are as follows: step 1, the shaped charge tube is put into the blast hole, the lead wire is passed through the abutting cylinder to the sealing joint, the lead wire is passed through the wire hole, and then the shell is put into the blast hole in the form that the abutting cylinder abuts against the shaped charge tube; step 2, the shell is pushed until the shaped charge tube reaches the blasting position, the lead wire is pulled to the outside of the blast hole, the sealing mud is filled into the blast hole, and the artificial tamping is performed. The application can avoid the external leakage of the shaped charge tube, and the lead wire will not be damaged during the hole sealing.

Description

Technical Field

[0001] This invention belongs to the field of blasting technology in civil engineering, mining, and water conservancy projects, and specifically relates to a blasting hole sealing locator. This invention also relates to a positioning method for the above-mentioned blasting hole sealing locator. Background Technology

[0002] The effect of using the cavity at one end of the explosive charge to enhance the local destructive force is called the focused energy effect. This phenomenon is called focused energy phenomenon. When excavating rock masses in tunnels and shafts, blasting devices are usually used to blast in order to speed up the construction efficiency.

[0003] Mining directional shaped charge blasting generally uses manual loading of explosives and sealing with a ram. The specific method is as follows: when loading explosives, first put the shaped charge tube with the explosive cartridge loaded into the blast hole, and then use the ram to push the shaped charge tube into the predetermined position. When the shaped charge tube is fixed in place, then tamp and seal the hole in sections to achieve a good sealing effect.

[0004] However, during the fixing of the shaped charge tube, if the position of the shaped charge tube shifts or falls off, it will affect the blasting location; and the shaped charge tube may also move outward. Once the shaped charge tube moves outward, it may cause personnel injury and seriously affect the construction progress. At the same time, the shaped charge tube is connected to a lead wire. When sealing the hole, since the sealing mud is in direct contact with the connection between the lead wire and the shaped charge tube, manual compaction of the sealing mud can easily damage the lead wire and further affect the blasting quality. Summary of the Invention

[0005] The purpose of this invention is to provide a blasting sealing hole positioner that can prevent the energy-concentrating tube from leaking outwards and will not damage the lead wire during sealing.

[0006] Another objective of this invention is to provide a method for positioning blasting sealing holes.

[0007] The first technical solution adopted in this invention is a blasting hole sealing positioner, including a housing, which is composed of a connecting pipe, a contact cylinder and a sealing joint. One end of the connecting pipe is connected to the contact cylinder and the other end is connected to the sealing joint. The inner side of the connecting pipe is provided with a claw, which passes through the connecting pipe and is inserted into the blast hole. The sealing joint also has a wire passage hole on one side for the lead wire to pass through.

[0008] The first technical solution of the present invention is further characterized in that,

[0009] The connecting pipe, the abutment cylinder, and the sealing joint are formed as one piece.

[0010] The maximum outer diameter of the casing is 4mm to 6mm smaller than the diameter of the borehole.

[0011] The chuck includes an elastic joint, with chuck pins connected to both ends of the elastic joint. The maximum distance between the two chuck pins is greater than the diameter of the borehole by 6mm to 10mm. The distance between the two chuck pins is reduced by squeezing the two chuck pins.

[0012] The elastic connector is spring-shaped, and the locking pin is an extension rod at both ends of the elastic connector. The locking pin at both ends of the connecting tube has a slot, and the locking pin passes through the slot and is inserted into the blast hole.

[0013] The included angle between the extension lines of the pins at both ends is less than 180°, and the included angle is directed toward the sealing joint.

[0014] The second technical solution adopted in this invention is a method for positioning explosive sealing holes, the specific steps of which are as follows:

[0015] Step 1: Insert the shaped charge tube into the borehole, pass the lead wire from the abutment tube to the sealing joint, pass it through the wire hole, and then insert the housing into the borehole in the form of the abutment tube abutting against the shaped charge tube.

[0016] Step 2: Push the shell until the shaped charge tube reaches the blasting position, pull the lead wire to the outside of the blast hole, fill the blast hole with sealing mud, and then manually tamp it down.

[0017] The beneficial effects of this invention are as follows: The blasting sealing locator of this invention consists of a housing formed by a connecting tube connecting a receiving cylinder and a sealing cylinder. One end of the receiving cylinder abuts against the shaped charge tube, pushing the shaped charge tube to the blasting position. The housing is then solidified by the claws inside the connecting tube, thus fixing the position of the shaped charge tube and preventing it from shifting or falling off, thus avoiding outward movement of the shaped charge tube during blasting. The lead wire passes through the wire hole and is pulled out of the blast hole. Because the inside of the housing is hollow, the connection point between the lead wire and the shaped charge tube will not be subjected to external pressure, preventing damage to the lead wire. Furthermore, the blasting sealing locator of this invention is easy to operate, and the overall structure is easy to manufacture. While ensuring the blasting effect of the shaped charge tube, it also improves work efficiency and reduces on-site operating costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the blasting sealing hole locator of the present invention;

[0019] Figure 2 This is a cross-sectional view of the blasting sealing hole locator of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the jacking claw of the blasting sealing hole positioner of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the blasting sealing hole locator of the present invention after installation.

[0022] In the diagram, 1. shell, 2. connecting pipe, 3. slot, 4. claw, 5. flexible joint, 6. pin, 7. wire hole, 8. abutment cylinder, 9. sealing joint, 10. energy-concentrating tube, 11. lead wire, 12. sealing mud. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, the blasting hole sealing positioner of the present invention includes a housing 1, which is composed of a connecting pipe 2, a contact cylinder 8 and a sealing joint 9. One end of the connecting pipe 2 is connected to the contact cylinder 8 and the other end is connected to the sealing joint 9. A claw 4 is provided inside the connecting pipe 2. The claw 4 passes through the connecting pipe 2 and is inserted into the blast hole. A wire hole 7 for the lead wire 11 to pass through is also opened on one side of the sealing joint 9.

[0026] The shaped charge tube 10 is delivered to the designated blasting position inside the borehole using the positioner of this invention. The position of the shaped charge tube 10 is fixed by inserting the claw 4 into the inner wall of the borehole. At the same time, when sealing the borehole, the hollow interior of the housing 1 provides protection for the connection position between the shaped charge tube 10 and the lead wire 11. The sealing mud 12 cannot enter the interior of the housing 1. Even if a small amount of sealing mud enters the interior of the housing 1, it will not affect the connection position between the lead wire 11 and the shaped charge tube 10, thus ensuring the blasting effect.

[0027] Preferably, the connecting pipe 2, the abutment cylinder 8, and the sealing joint 9 are integrally formed, and all three components are made of high-strength materials.

[0028] Example 2

[0029] Based on Example 1, in order to ensure the final sealing effect and the blasting effect of the shaped charge tube, the maximum outer diameter of the shell 1 is 4mm to 6mm smaller than the diameter of the borehole. This ensures that the shell 1 can easily enter the borehole without creating an excessive gap between the shell 1 and the borehole, thereby reducing the blasting effect of the shaped charge tube 10.

[0030] Example 3

[0031] The blasting borehole locator of this embodiment includes a housing 1. The maximum outer diameter of the housing 1 is 4mm to 6mm smaller than the diameter of the blast hole. The housing 1 is integrally composed of a connecting pipe 2, abutting cylinder 8 and sealing joint 9. One end of the connecting pipe 2 is connected to the abutting cylinder 8 and the other end is connected to the sealing joint 9. A claw 4 is provided on the inner side of the connecting pipe 2.

[0032] like Figure 3As shown, the claw 4 includes an elastic connector 5, and the two ends of the elastic connector 5 are respectively connected to the pins 6. The pins 6 at opposite ends of the connecting tube 2 are respectively provided with slots 3. The pins 6 pass through the slots 3 and are located on opposite sides of the connecting tube 2, and are inserted into the inner wall of the borehole. In this embodiment, two sets of claws 4 are vertically distributed in the connecting tube 2, that is, four pins 6 are distributed along the circumference of the outside of the connecting tube 2.

[0033] The included angle between the extended lines of the two end pins 6 is less than 180° and the included angle is towards the sealing joint 9; the maximum distance between the two end pins 6 on the claw 4 is greater than the diameter of the blast hole by 6mm to 10mm, and the distance between the two end pins 6 is reduced by squeezing the two end pins 6.

[0034] When the housing 1 enters the borehole, because the maximum distance between the chucks 4 is greater than the borehole diameter, the borehole wall squeezes the pins 6 at both ends of the chucks 4. The elastic joint 5 moves upward along the connecting pipe 2, reducing the distance between the pins 6 on both sides of the connecting pipe 2, thus facilitating the entry of the housing 1 into the borehole. When the housing 1 reaches the designated position, if the shaped charge tube 10 tends to move outward, the housing 1 is squeezed by the shaped charge tube 10 and moves towards the borehole opening. At this time, the pins 6 insert into the borehole wall to prevent the housing 1 from moving, thus fixing the position of the shaped charge tube 10.

[0035] Preferably, the elastic connector 5 and the locking pin 6 are integrally formed, the elastic connector 5 is spring-shaped, and the locking pin 6 is an extension rod at both ends of the elastic connector 5.

[0036] The sealing connector 9 also has a wire passage hole 7 on one side for the lead wire 11 to pass through.

[0037] like Figure 4 As shown, the blasting sealing hole positioning method of the present invention uses the blasting sealing hole locator described in Example 3, and the specific steps are as follows:

[0038] Step 1: Insert the shaped charge tube 10 into the borehole, pass the lead wire 11 from the abutment tube 8 to the sealing connector 9, pass it through the wire hole 7, and then insert the housing 1 into the borehole in the form of the abutment tube 8 abutting against the shaped charge tube 10; that is, ensure that the included angle of the claw 4 faces the borehole opening.

[0039] Step 2: Push the shell 1 until the shaped charge tube 10 reaches the blasting position. Pull the lead wire 11 to the outside of the blast hole and fill the blast hole with sealing mud 12. Then, manually tamp it down to complete the positioning of the shaped charge tube 10.

[0040] The blasting sealing hole positioner of this invention is easy to operate and its overall structure is easy to process. It ensures the blasting effect of the shaped charge tube while improving work efficiency and reducing on-site operation costs.

Claims

1. A blasting sealing hole positioner, characterized in that, Includes a housing (1), which is composed of a connecting pipe (2), abutment cylinder (8) and sealing joint (9). One end of the connecting pipe (2) is connected to the abutment cylinder (8) and the other end is connected to the sealing joint (9). The connecting pipe (2) is provided with a claw (4) inside. The claw (4) passes through the connecting pipe (2) and is inserted into the blast hole. The sealing joint (9) also has a wire hole (7) on one side for the lead wire (11) to pass through. The specific steps for location positioning are as follows: Step 1: Insert the shaped charge tube (10) into the borehole, pass the lead wire (11) from the abutment tube (8) to the sealing joint (9), pass it through the wire hole (7), and then insert the housing (1) into the borehole in the form of the abutment tube (8) and the shaped charge tube (10) abutting each other. Step 2: Push the shell (1) until the energy-concentrating tube (10) reaches the blasting position, pull the lead wire (11) to the outside of the blast hole, fill the blast hole with sealing mud (12), and then manually tamp it down.

2. The blasting sealing hole locator according to claim 1, characterized in that, The connecting pipe (2), the abutment cylinder (8), and the sealing joint (9) are integrally formed.

3. The blasting sealing hole locator according to claim 2, characterized in that, The maximum outer diameter of the shell (1) is 4mm to 6mm smaller than the diameter of the borehole.

4. The blasting sealing hole locator according to claim 1, characterized in that, The chuck (4) includes an elastic connector (5), and the two ends of the elastic connector (5) are respectively connected to chuck pins (6). The maximum distance between the two chuck pins (6) is greater than the diameter of the borehole by 6mm~10mm. The distance between the two chuck pins (6) is reduced by squeezing the two chuck pins (6).

5. The blasting sealing hole locator according to claim 4, characterized in that, The elastic connector (5) is spring-shaped, and the pin (6) is an extension rod at both ends of the elastic connector (5). The pins (6) at opposite ends of the connecting tube (2) are respectively provided with slots (3). The pins (6) pass through the slots (3) and are inserted into the borehole.

6. The blasting sealing hole locator according to claim 5, characterized in that, The included angle between the extension lines of the pins (6) at both ends is less than 180° and the included angle is directed toward the sealing connector (9).

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