Blasting charge structure in a water hole for engineering blasting

Abstract

The utility model relates to the technical field of engineering blasting, and specifically discloses an engineering blasting water hole blasting charge structure, which comprises a baffle, the baffle is a cylindrical structure with open ends, a supporting plate is fixedly connected to the lower part of the inside of the baffle, a buffer plate is arranged directly above the supporting plate, a plurality of springs that are uniformly distributed in a circular shape are fixedly connected between the supporting plate and the buffer plate, a base is arranged on one side of the baffle, the gas compressibility and the elastic support mechanism are combined, the technical bottleneck of pressure balance and the stability of the propellant column in deep water blasting is broken through, the modular sealing connection design greatly reduces the construction difficulty of complex working conditions, the baffle is infinitely expanded through a standardized threaded interface, the hole depth limit is broken through, the positioning accuracy of the device in the inclined blast hole is significantly improved through self-adaptive counterweight, and the safety and the economy are both improved as a whole.

Description

Technical Field

[0001] This utility model relates to the field of engineering blasting technology, and specifically discloses a blasting charge structure in a water hole for engineering blasting. Background Technology

[0002] In engineering blasting operations, seepage holes are frequently encountered in open-pit mines and tunnel excavation. Currently, water-filled blasting primarily employs two types of techniques: one is the use of waterproof explosives such as emulsion explosives, but their detonation performance is significantly reduced compared to conventional explosives, and they are also very expensive; the other is the use of plastic film wrapping or simple waterproof bags to isolate the explosive cartridges, but these are prone to breakage and failure under the pressure of deep water and friction against the rock wall, leading to moisture absorption and misfires. While these methods can address seepage in shallow holes, they are insufficiently adaptable to deep water holes and high water pressure conditions.

[0003] Existing watertight charging structures generally suffer from systemic defects: rigid sealing cylinders are difficult to balance dynamic water pressure inside the hole, often leading to structural deformation or even rupture due to pressure accumulation; they lack a catalytic charge stabilization mechanism, and the catalytic charge is prone to displacement due to water flow impact during the charging process, resulting in uneven charge density; and most are integral structures, which cannot adapt to different hole depth requirements. Utility Model Content

[0004] This utility model proposes a blasting charge structure for water holes in engineering blasting, which integrates the compressibility of gas and the elastic support mechanism, breaks through the technical bottleneck of pressure balance and charge stability in deep water blasting. The modular sealed connection design greatly reduces the construction difficulty in complex working conditions, and the standardized threaded interface enables the infinite expansion of the diaphragm, breaking through the limitation of hole depth.

[0005] This utility model is implemented as follows: a blasting charge structure in an engineering blasting water hole includes a partition cylinder, which is a cylindrical structure with open ends. A support plate is fixedly connected to the lower part of the partition cylinder, and a buffer plate is arranged directly above the support plate. Multiple springs evenly distributed in a circle are fixedly connected between the support plate and the buffer plate. A base is arranged on one side of the partition cylinder, and a bidirectional connector is arranged on the other side of the partition cylinder.

[0006] As a preferred embodiment of the explosive charging structure in an engineering blasting water hole according to this utility model, both ends of the outer wall of the bidirectional connector are provided with external threads, both ends of the inner wall of the partition cylinder are provided with internal threads, and the base is threadedly connected to the partition cylinder.

[0007] As a preferred embodiment of the explosive charging structure in an engineering blasting water hole according to this utility model, the partition includes an inner cylinder, and an outer cylinder is provided on the outer wall of the inner cylinder. A sealed cavity is formed between the inner cylinder and the outer cylinder, and the cavity is filled with inert gas.

[0008] As a preferred embodiment of the blasting charge structure in the water hole of the present invention, both the support plate and the buffer plate have through holes of equal size on their outer walls.

[0009] As a preferred embodiment of the blasting charge structure in the water hole of this utility model, the outer wall of the outer cylinder is fixedly connected with multiple reinforcing ribs.

[0010] As a preferred embodiment of the blasting charge structure in the water hole of the present invention, the base is conical and hollow, the bottom of the base is threadedly connected to a cap, and the outer wall of the cap is fixedly connected to a handle.

[0011] As a preferred embodiment of the blasting charge structure in an engineering blasting water hole according to this utility model, both ends of the outer wall of the bidirectional connector are fitted with sealing rings.

[0012] The beneficial effects of this utility model are:

[0013] This structure integrates the compressibility of gas with an elastic support mechanism, breaking through the technical bottlenecks of pressure balance and charge stability in deep-water blasting. The modular sealed connection design significantly reduces the construction difficulty in complex working conditions. The standardized threaded interface enables the infinite expansion of the diaphragm, breaking through the hole depth limitation. The adaptive counterweight significantly improves the positioning accuracy of the device in inclined boreholes, achieving a dual improvement in safety and economy. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a front sectional view of the overall structure of this utility model;

[0016] Figure 2 This is a diagram of the external structure of the partition cylinder of this utility model;

[0017] Figure 3 This is a bottom view of the base structure of this utility model.

[0018] The markings in the diagram are: 1. Partition cylinder; 2. Support plate; 3. Buffer plate; 4. Spring; 5. Base; 6. Inner cylinder; 7. Outer cylinder; 8. Cavity; 9. Two-way connector; 10. External thread; 11. Sealing ring; 12. Through hole; 13. Reinforcing rib; 14. Screw cap; 15. Screw handle. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] Please see Figure 1-3 A blasting charge structure for water-filled blasting holes in engineering blasting includes a partition cylinder 1, which is a cylindrical structure with open ends. A support plate 2 is fixedly connected to the lower part of the partition cylinder 1. A buffer plate 3 is set directly above the support plate 2. Multiple springs 4, which are evenly distributed in a circle, are fixedly connected between the support plate 2 and the buffer plate 3. A base 5 is set on one side of the partition cylinder 1, and a bidirectional connector 9 is set on the other side of the partition cylinder 1.

[0022] In this embodiment: the partition cylinder 1 adopts a composite structure of an inner cylinder 6 and an outer cylinder 7, forming a sealed cavity 8 filled with an inert gas, such as 0.3MPa argon. When the water depth of the borehole increases, the external water pressure squeezes the outer cylinder 7, and the gas volume in the cavity 8 is compressed to 60% of its original volume, achieving dynamic pressure balance and effectively preventing cylinder deformation. The support plate 2 is fixed to the bottom of the partition cylinder 1, and the buffer plate 3 above it forms an elastic support layer through multiple sets of annular array springs 4. The pre-compression of the springs 4 is 1.2 times the weight of the propellant cartridge. During loading, the impact force of the propellant cartridge falling is absorbed by the springs 4 in stages, ensuring the safety of the propellant column. The axial displacement is smaller under the impact environment of 30m water depth; the detachable cap 14 of the inner cavity of the conical base 5 is designed to support the filling of counterweight steel sand, and the cap 14 is easy to open and close through the handle 15. The standard internal threads at both ends of the partition cylinder 1 and the external threads 10 of the bidirectional connector 9 are used to achieve quick docking. During operation, the conical base 5 is first screwed into the first section of the partition cylinder 1, and after sinking to the bottom of the hole, the medicine cartridge is placed into the cylinder; when the hole depth exceeds the length of a single section, one end of the bidirectional connector 9 is screwed into the installed partition cylinder 1, and the other end is connected to the new partition cylinder 1 to continue to lower it. The partition cylinder can be infinitely expanded through the standardized thread interface, breaking through the hole depth limit.

[0023] As a technical optimization of this utility model, both ends of the outer wall of the bidirectional connector 9 are provided with external threads 10, both ends of the inner wall of the partition cylinder 1 are provided with internal threads, and the base 5 is threadedly connected to the partition cylinder 1.

[0024] In this embodiment: the bidirectional external thread 10 of the bidirectional connector 9 and the internal thread of the partition cylinder 1 are threaded together. The sealing ring 11 is subjected to axial compression and radial expansion during the thread tightening process, filling the assembly gap and forming a seal.

[0025] As a technical optimization of this utility model, the partition cylinder 1 includes an inner cylinder 6, an outer cylinder 7 is provided on the outer wall of the inner cylinder 6, and a sealed cavity 8 is formed between the inner cylinder 6 and the outer cylinder 7, and the cavity 8 is filled with an inert gas.

[0026] In this embodiment, the inert gas, such as argon, inside cavity 8 absorbs the impact energy through adiabatic compression when compressed, thus simultaneously suppressing the resonance of the cylinder.

[0027] As a technical optimization of this utility model, the outer walls of both the support plate 2 and the buffer plate 3 are provided with through holes 12 of equal size.

[0028] In this embodiment, the concentric through holes of the support plate 2 and the buffer plate 3 facilitate the passage of the medicine roll.

[0029] As a technical optimization of this utility model, the outer wall of the outer cylinder 7 is fixedly connected with multiple reinforcing ribs 13.

[0030] In this embodiment, reinforcing ribs 13 are welded around the outer cylinder 7 to increase the bending stiffness of the outer cylinder 7 and improve its resistance to deformation.

[0031] As a technical optimization of this utility model, the base 5 is conical and hollow, and the bottom of the base 5 is threadedly connected to a cap 14, and the outer wall of the cap 14 is fixedly connected to a handle 15.

[0032] In this embodiment, the inner cavity of the conical base 5 is divided into three independent compartments. The removable screw cap 14 of the inner cavity of the conical base 5 is designed to support the filling of counterweight steel sand. The screw cap 14 is easy to open and close through the handle 15, which improves the overall stability.

[0033] As a technical optimization of this utility model, sealing rings 11 are fitted onto both ends of the outer wall of the bidirectional connector 9.

[0034] In this embodiment: both ends of the outer wall of the bidirectional connector 9 are fitted with sealing rings 11. During the tightening of the threads, the sealing rings 11 are subjected to axial compression and radial expansion, filling the assembly gap to form a seal.

[0035] The working principle and usage process of this utility model are as follows: On the ground, the construction personnel screw the conical base 5 into the first section of the diaphragm 1, open the cap 14 to add steel shot into the base 5 and then close it; after sinking the first section of the diaphragm 1 to the bottom of the blast hole, the explosive cartridge is dropped, and the explosive cartridge falls on the buffer plate 3 for buffering; after measuring the remaining hole depth, a new diaphragm 1 is taken and screwed into one end of the two-way connector 9, and the other end is inserted into the installed diaphragm 1 and rotated to complete the sealing connection; repeat this process until the charging height reaches the standard. As the diaphragm 1 is lowered to a greater depth, the water pressure on the outer cylinder 7 is balanced by the argon gas compression in the cavity 8; when detonated, the detonation wave first penetrates the thin wall area of ​​the inner cylinder 6, and the high-pressure argon gas in the cavity 8 accelerates the energy release.

[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A blasting charge structure for water-filled blasting holes in engineering blasting, comprising a partition cylinder (1), characterized in that: The partition (1) is a cylindrical structure with openings at both ends. A support plate (2) is fixedly connected to the lower part of the partition (1). A buffer plate (3) is provided directly above the support plate (2). A plurality of springs (4) evenly distributed in a circle are fixedly connected between the support plate (2) and the buffer plate (3). A base (5) is provided on one side of the partition (1), and a bidirectional connector (9) is provided on the other side of the partition (1).

2. The explosive charging structure in a water-filled blasting hole according to claim 1, characterized in that: Both ends of the outer wall of the bidirectional connector (9) are provided with external threads (10), both ends of the inner wall of the partition cylinder (1) are provided with internal threads, and the base (5) is threadedly connected to the partition cylinder (1).

3. The explosive charging structure in a water-filled blasting hole according to claim 1, characterized in that: The partition (1) includes an inner cylinder (6), and an outer cylinder (7) is provided on the outer wall of the inner cylinder (6). A sealed cavity (8) is formed between the inner cylinder (6) and the outer cylinder (7), and the cavity (8) is filled with an inert gas.

4. The explosive charging structure in a water-filled blasting hole according to claim 1, characterized in that: Both the support plate (2) and the buffer plate (3) have through holes (12) of equal size on their outer walls.

5. The explosive charging structure in a water-filled blasting hole according to claim 3, characterized in that: The outer wall of the outer cylinder (7) is fixedly connected with multiple reinforcing ribs (13).

6. The explosive charging structure in a water-filled blasting hole according to claim 1, characterized in that: The base (5) is conical and hollow. The bottom of the base (5) is threaded with a cap (14), and the outer wall of the cap (14) is fixedly connected with a handle (15).

7. The explosive charging structure in a water-filled blasting hole according to claim 1, characterized in that: Both ends of the outer wall of the bidirectional connector (9) are fitted with sealing rings (11).

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