A borehole spacing charge device

Abstract

The utility model discloses a blasthole interval charging device, including positioning hole zone and cartridge band, be equipped with a plurality of positioning holes to positioning hole zone along the length direction, and cartridge band includes connecting band, convex structure and connecting structure, and the one end of connecting band is provided with a plurality of buckling holes, and one side of connecting band is equipped with a plurality of convex structures, and the other side of connecting band and away from the end of buckling hole is equipped with connecting structure, and connecting band is used for binding in explosive roll outside, and the convex structure is used for resisting in the explosive roll peripheral side, and connecting structure is used for buckling buckling hole, and buckling in positioning hole. The utility model can utilize cartridge band to complete the binding of explosive roll fixed, and then utilize the buckling of convex structure positioning hole, complete the fixing with positioning hole zone, and a plurality of explosive rolls can be assembled in the corresponding positioning hole through the corresponding cartridge band, complete the connection installation with positioning hole zone, in this way, can match the explosive roll of different size as needed, realize the interval adjustment of different blasting batch interval charging.

Description

Technical Field

[0001] This utility model relates to the field of blasting construction technology, specifically to a blast hole interval charging device. Background Technology

[0002] Nuclear power plant engineering typically employs blasting excavation. The nuclear island demands extremely high standards for the foundation bearing stratum and its integrity. Therefore, ensuring foundation quality and controlling damage are key aspects of engineering blasting. However, there are contradictions between measures to improve excavation efficiency and the uniformity of blasted block size, and excavation quality control and peak wave velocity control. With in-depth research into explosive detonation theory and rock fragmentation mechanisms, numerous researchers and blasting engineers have proposed many rapid and reasonable blasting methods and processes, such as layered blasting excavation technology and cushion layer blasting excavation technology. Axial interval charging technology is one such method. Its working principle is to use interval charging to increase the interface. After multiple reflections and transmissions through the interface, the stress wave peak value is reduced, thus minimizing the impact of the explosive stress wave on the foundation surface at the bottom of the borehole.

[0003] Existing axially spaced explosive loading techniques typically involve binding explosive rolls into sections using thin bamboo strips, then installing detonating cords and connecting wires. This process is time-consuming and cannot guarantee that the spacing will meet the blasting design requirements, making it extremely inconvenient. While a prefabricated, integral cylindrical plastic rigid device could be used to precisely ensure the spacing of the explosives, it would also significantly increase costs and hinder widespread adoption.

[0004] Therefore, there is an urgent need for a borehole-interval charging device to solve the problem of the inconvenience of using conventional devices for securing explosives. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a borehole-interval charging device to solve the problem of inconvenience in using conventional devices for securing explosives.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A borehole-interval charging device includes a positioning hole band and a charge cartridge binding band. The positioning hole band has a plurality of positioning holes along its length. The charge cartridge binding band includes a connecting binding band, a protruding structure, and a connecting structure. One end of the connecting binding band has a plurality of fastening holes, one side of the connecting binding band has a plurality of protruding structures, and the other side of the connecting binding band, away from the fastening holes, has a connecting structure. The connecting binding band is used to bind to the outside of the explosive cartridge, and the protruding structures are used to abut against the outer side of the explosive cartridge. The connecting structure is used to fasten the fastening holes and to fasten into the positioning holes.

[0008] To optimize the above technical solution, the specific measures also include:

[0009] Furthermore, the connecting structure is a connecting buckle, which includes a cylindrical insertion rod and a limiting head. The insertion rod is connected to the side of the connecting strap, and the limiting head is provided at the end of the insertion rod away from the connecting strap. The maximum diameter of the limiting head is larger than the diameter of the insertion rod.

[0010] Furthermore, the diameters of the positioning hole and the fastening hole are both greater than or equal to the maximum diameter of the limiting head, and a flexible rubber ring is provided on the inner side of both the positioning hole and the fastening hole, the inner diameter of which is smaller than the maximum diameter of the limiting head.

[0011] Furthermore, both the positioning hole strap and the medicine roll binding strap are made of PVC material.

[0012] Furthermore, the limiting head has a hemispherical structure.

[0013] Furthermore, the protruding structure is triangular prism-shaped, and several triangular prism-shaped protruding structures are evenly spaced on the side of the connecting strap, and one side edge of the triangular prism-shaped protruding structure is used to abut against the outer side of the explosive roll.

[0014] Furthermore, the protrusion structure is hemispherical, and several hemispherical protrusion structures are equally spaced on the side of the connecting strap, and the tips of the hemispherical protrusion structures are used to abut against the outer side of the explosive roll.

[0015] Furthermore, the positioning hole band has graduations along its length.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes a positioning hole strap and a cartridge binding strap. During use, the binding strap is wrapped around the outside of the explosive cartridge one or several times, and then secured with protruding structures in the fastening holes to complete the binding and fixation of the explosive cartridge. Simultaneously, the protruding structures continue to fasten into the corresponding positioning holes, thus fixing the explosive cartridge to the positioning hole strap. Several explosive cartridges are then sequentially assembled into their respective positioning holes using the cartridge binding strap, completing the entire explosive loading process. In this design, the multiple protruding structures increase the tightness and friction between the binding strap and the explosive cartridge when the binding strap is wrapped around the outside, preventing problems such as the explosive cartridge slipping off. The multiple fastening holes allow for matching explosive cartridges of different sizes as needed, and the multiple positioning holes allow for selecting the appropriate positioning holes for the cartridge binding strap, enabling adjustment of the spacing between different blasting batches. Attached Figure Description

[0018] Figure 1This is a schematic diagram illustrating the use of a borehole interval charging device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the propellant roll binding strap of a borehole interval charging device proposed in this utility model;

[0020] Figure 3 This is a cross-sectional view of the propellant roll binding strap of the borehole interval charging device proposed in this utility model in a usage state;

[0021] Figure 4 This is a schematic diagram of the positioning hole band of a borehole interval charging device proposed in this utility model.

[0022] Reference numerals: 1-Positioning hole band; 11-Positioning hole; 2-Bullet cartridge binding strap; 21-Connecting buckle; 22-Snapping hole; 23-Protruding structure; 3-Explosive cartridge. Detailed Implementation

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

[0024] As attached Figure 1 and attached Figure 4 As shown, a borehole-interval charging device includes a positioning hole band 1 and a cartridge binding band 2. The positioning hole band 1 has a plurality of positioning holes 11 along its length. The cartridge binding band 2 includes a connecting binding band, a protruding structure 23, and a connecting structure. One end of the connecting binding band has a plurality of fastening holes 22. One side of the connecting binding band has a plurality of protruding structures 23. The other side of the connecting binding band and the end away from the fastening holes 22 has a connecting structure. The connecting binding band is used to bind to the outside of the explosive cartridge 3, and the protruding structures 23 are used to abut against the outer side of the explosive cartridge 3. The connecting structure is used to fasten to the fastening holes 22 and to fasten into the positioning holes 11.

[0025] This invention, through the design of the positioning hole band 1 and the explosive cartridge binding band 2, allows for the following process: After the binding band is wrapped around the outside of the explosive cartridge 3 one or more times, the protruding structure 23 engages with the fastening hole 22 to secure the explosive cartridge 3. Simultaneously, the protruding structure 23 continues to engage with the corresponding positioning hole 11, thus fixing the explosive cartridge 3 to the positioning hole band 1. By sequentially assembling several explosive cartridges 3 into their corresponding positioning holes 11 using the explosive cartridge binding band 2, the installation of the entire explosive is completed. In this design, the multiple protruding structures 23 increase the tightness and friction between the binding band and the explosive cartridge 3 when the binding band is wrapped around the outside of the explosive cartridge 3, preventing problems such as slippage of the explosive cartridge 3. In this scheme, the setting of several fastening holes 22 can match explosive rolls 3 of different sizes as needed, and the setting of several positioning holes 11 can select the positioning holes 11 for fastening the explosive roll straps 2 as needed, so as to realize the spacing adjustment of the explosive loading interval for different blasting batches.

[0026] When using this utility model, the overall radial width of the device should be smaller than the diameter of the blast hole so that the device can pass smoothly through the blast hole to reach the predetermined position. The overall radial width of the device can be set as needed.

[0027] As attached Figure 2 As shown, in another specific embodiment based on the above, the connection structure is a connecting buckle 21. The connecting buckle 21 includes a cylindrical insertion rod and a limiting head. The insertion rod is connected to the side of the connecting strap, and the limiting head is provided at the end of the insertion rod away from the connecting strap. The maximum diameter of the limiting head is larger than the diameter of the insertion rod. In this solution, the maximum diameter of the limiting head can be slightly larger than the diameter of the positioning hole 11 and the buckle hole 22. In use, the limiting head can pass through the buckle hole 22, and the insertion rod and the buckle hole 22 can cooperate to complete the limiting and binding of the explosive roll 3. Then, the limiting head can pass through the positioning hole 11, and the insertion rod and the positioning hole 11 can cooperate to complete the relative fixation of the explosive roll 3 and the positioning hole strap 1.

[0028] In this design, the diameters of the positioning hole 11 and the fastening hole 22 are both greater than or equal to the maximum diameter of the limiting head, and both the positioning hole 11 and the fastening hole 22 are provided with flexible rubber rings on their inner sides, the inner diameter of which is smaller than the maximum diameter of the limiting head. Therefore, during use, the flexible rubber rings facilitate the insertion of the limiting head while ensuring the stability of the structural connection.

[0029] In the above solution, the positioning hole strip 1 and the pill roll binding strip 2 can also be made of flexible materials, thus eliminating the need for flexible rubber rings and achieving the insertion and connection of the limiting head. For example, both the positioning hole strip 1 and the pill roll binding strip 2 can be made of PVC material.

[0030] The aforementioned limiting head is a hemispherical structure with the smaller diameter end facing outwards. This hemispherical limiting head allows for easier insertion into the positioning hole 11 and the fastening hole 22.

[0031] In another specific embodiment based on the above, the protruding structure 23 is triangular prism-shaped, and several triangular prism-shaped protruding structures 23 are evenly spaced on the side of the connecting strap, and one side edge of the triangular prism-shaped protruding structure 23 is used to abut against the outer side of the explosive roll 3. In use, after the fastening hole 22 and the connecting buckle 21 are fastened together, a roll shape is formed, which constrains the explosive roll 3 inside. After fastening, the continuous protruding structure 23 is located on the inner side of the roll-shaped connecting strap, which can abut against and fix the explosive roll 3, preventing the explosive roll from slipping.

[0032] In another specific embodiment based on the above, the protrusion structure 23 is hemispherical, and several hemispherical protrusion structures 23 are equally spaced on the side of the connecting strap, and the tip of the hemispherical protrusion structure 23 is used to abut against the outer side of the explosive roll 3.

[0033] In another specific embodiment based on the above, the positioning hole band 1 is provided with a scale along the length direction.

[0034] In this scheme, the length of the positioning hole strip 1 is theoretically unlimited and can be cut on-site according to the depth of the blast hole. The scale of the positioning hole strip 1 is engraved on the side of the positioning hole 11 to determine whether the spacing between the explosive rolls 3 meets the design axial spacing of the charge. During use, a certain distance should be reserved between the bottom of the first explosive roll 3 from the bottom of the blast hole and the bottom of the blast hole. The distance is the allowable over-excavation depth, which is used to set up an air protection pad.

[0035] This utility model device can precisely control the spacing of the explosive charge, is simple and easy to operate, can form a continuous construction process, and effectively reduces the time for binding, charging and blasting.

[0036] One specific embodiment of this utility model is as follows:

[0037] S1: Cut the positioning hole strips 1 to the matching length according to the depth of the blast hole on site, use the explosive roll binding straps 2 to bind the explosive rolls 3 and place them in groups, determine the number of explosive rolls 3 in each group and the binding spacing, so as to facilitate subsequent use and form a modular parallel operation process.

[0038] S2: Fasten each set of explosive cartridge binding straps 2 to the positioning hole straps 1 according to the interval of the explosive loading, to ensure that the explosive cartridge set is installed firmly and the spacing is accurate. Transport the assembled interval loading device to the vicinity of the top of the borehole, insert the electronic detonator into the last explosive cartridge 3 or the second to last explosive cartridge 3 located at the bottom of the borehole, and connect the wire to form an assembly line operation.

[0039] S3: Finally, slowly insert the entire device into the borehole, plug the top of the borehole, check and accept the quality of the explosive charge in each borehole, and make a record.

[0040] This utility model device reduces the time spent on binding and loading, enabling precise interval loading in a streamlined manner, while also reducing economic costs.

[0041] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0042] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A borehole-interval charging device, characterized in that: The device includes a positioning hole band (1) and a cartridge binding band (2). The positioning hole band (1) has several positioning holes (11) along its length. The cartridge binding band (2) includes a connecting band, a protruding structure (23), and a connecting structure. One end of the connecting band has several fastening holes (22). One side of the connecting band has several protruding structures (23). The other side of the connecting band and the end away from the fastening holes (22) has a connecting structure. The connecting band is used to bind the outer side of the explosive cartridge (3), and the protruding structure (23) is used to abut against the outer side of the explosive cartridge (3). The connecting structure is used to fasten the fastening holes (22) and fasten them into the positioning holes (11).

2. The borehole interval charging device according to claim 1, characterized in that: The connection structure is a connecting buckle (21), which includes a cylindrical insert rod and a limiting head. The insert rod is connected to the side of the connecting strap. The end of the insert rod away from the connecting strap is provided with a limiting head. The maximum diameter of the limiting head is greater than the diameter of the insert rod.

3. A borehole-interval charging device according to claim 2, characterized in that: The diameters of the positioning hole (11) and the fastening hole (22) are both greater than or equal to the maximum diameter of the limiting head, and a flexible rubber ring is provided on the inner side of both the positioning hole (11) and the fastening hole (22), the inner diameter of which is smaller than the maximum diameter of the limiting head.

4. A borehole-interval charging device according to claim 2, characterized in that: The positioning hole strip (1) and the medicine roll binding strip (2) are both made of PVC material.

5. A borehole-interval charging device according to claim 2, characterized in that: The limiting head has a hemispherical structure.

6. A borehole-interval charging device according to claim 1, characterized in that: The protruding structure (23) is triangular prism-shaped, and several triangular prism-shaped protruding structures (23) are evenly spaced on the side of the connecting strap, and one side edge of the triangular prism-shaped protruding structure (23) is used to abut against the outer side of the explosive roll (3).

7. A borehole-interval charging device according to claim 1, characterized in that: The protrusion structure (23) is hemispherical in shape, and several hemispherical protrusion structures (23) are evenly spaced on the side of the connecting strap, and the tip of the hemispherical protrusion structure (23) is used to abut against the outer side of the explosive roll (3).

8. A borehole-interval charging device according to claim 1, characterized in that: The positioning hole band (1) has graduations along its length.

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