Large-diameter deep hole blasting blocking device

Abstract

The utility model discloses a large-diameter deep hole blasting blocking device, which belongs to the field of large-diameter deep hole blasting and comprises a blasting hole, a bottom block, a bottom pressure sensor, a charging bag, a grain, an external expansion blocking structure, a control device and a blocking column. During charging, the charging bag is used for bearing the grain, the bottom block is firstly placed at the bottom of the blast hole, then the charging bag is placed in the blast hole, and when the charging bag is in contact with the bottom pressure sensor, pressure information of the bottom pressure sensor is transmitted to the control device; when the control device judges that the pressure of the bottom pressure sensor reaches a set value, the control device controls the external expansion blocking structure to act to expand outwards, then the middle of the charging bag is fixed outwards, a grain on the upper portion of the charging bag is borne through the external expansion blocking structure, and then the pressure borne by the grain at the bottom of the charging bag is reduced; explosion is prevented from being affected by overlarge pressure at the bottom of the grain.

Description

Technical Field

[0001] The utility model relates to the field of large-diameter deep hole blasting, in particular to a large-diameter deep hole blasting plugging device. Background Art

[0002] In underground large-scale blasting operations, the use of downward large-diameter deep holes for interval charging blasting has become a common technology. This technology arranges explosive columns in downward deep holes so that the energy generated during the explosion can be effectively transferred to the target rock mass to achieve the purpose of crushing and mining. However, as the column continues to deepen, the pressure on the bottom column also increases. This may cause the detonation performance of the bottom column to be unstable, increasing the risk of explosion rejection. At the same time, excessive pressure on the bottom column may lead to unpredictability during the explosion, thereby increasing safety hazards at the work site and reducing the efficiency and quality of the blasting operation. The current solution is mainly to reduce the bottom pressure by increasing the compressive resistance of the explosive column or reducing the length of the column, but these methods are not always effective and may increase costs and operational difficulty. Utility Model Content

[0003] The utility model aims to solve the problems raised in the background technology and designs a large-diameter deep hole blasting and plugging device.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a large-diameter deep hole blasting plugging device, comprising a blasting hole, a bottom block, a bottom pressure sensor, a charge bag, a charge column, an outward-expanding plugging structure, a control device, and a plugging column. A bottom block is provided at the bottom of the blasting hole, and a bottom pressure sensor is installed on the bottom block. A charge bag is provided above the bottom block in the blasting hole, and a charge column is installed in the charge bag. An outward-expanding plugging structure is provided in the middle of the charge bag, and the outward-expanding plugging structure is a structure that expands outward when in action. A control device is connected to the outward-expanding plugging structure, and a signal input end of the control device is connected to the bottom pressure sensor. A plugging column is provided on the top of the blasting hole.

[0005] Furthermore, the outward expansion blocking structure includes a middle partition, a connecting hole, a fixed piston, an airbag, and an air tube. A middle partition is installed horizontally in the middle of the medicine bag, a plurality of connecting holes are opened on the middle partition, a fixed piston is slidably inserted on the middle partition, an airbag is installed in the middle of the middle partition, the airbag is in contact with the inner end of the fixed piston, the airbag is connected to the air tube, and the air tube is connected to the control device.

[0006] Furthermore, the control device includes a control box, an air pump, a controller, and a signal line. The control box is connected to the air pipe, an air pump is installed in the control box, the air pump is connected to the air pipe, the control end of the air pump is connected to the controller, the controller is connected to the signal line, and the signal line is electrically connected to the bottom pressure sensor.

[0007] Furthermore, the diameter of the connecting hole is larger than the diameter of the drug particles in the drug column.

[0008] Furthermore, the signal line is a signal line having a shielding layer.

[0009] Beneficial effects:

[0010] The utility model provides a large-diameter deep hole blasting plugging device, which has the following beneficial effects. The device is designed to support the charge column through the charge bag during charge loading. First, the bottom block is placed at the bottom of the blasting hole, and then the charge bag is placed in the blasting hole. When the charge bag contacts the bottom pressure sensor, the pressure information of the bottom pressure sensor is transmitted to the control device. When the control device determines that the pressure of the bottom pressure sensor reaches a set value, the control device controls the outward expansion plugging structure to expand outward, thereby fixing the middle part of the charge bag outward, and supporting the charge column on the upper part of the charge bag through the outward expansion plugging structure, thereby reducing the pressure on the charge column at the bottom of the charge bag, and avoiding the influence of the blasting on the excessive pressure at the bottom of the charge column. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the large-diameter deep hole blasting plugging device of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the middle partition part of the utility model;

[0013] Figure 3 The utility model is a schematic diagram of the control box of the large-diameter deep hole blasting plugging device and its connection relationship structure.

[0014] In the figure, 1. blasting hole; 2. bottom block; 3. bottom pressure sensor; 4. medicine bag; 5. medicine column; 6. blocking column; 7. middle partition; 8. connecting hole; 9. fixed piston; 10. air bag; 11. air pipe; 12. control box; 13. air pump; 14. controller; 15. signal line. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-3 The utility model provides a technical solution: a large-diameter deep hole blasting plugging device, including a blasting hole 1, a bottom block 2, a bottom pressure sensor 3, a charge bag 4, a charge column 5, an outward expansion plugging structure, a control device, and a plugging column 6. The bottom of the blasting hole 1 is provided with a bottom block 2, and the bottom block 2 is equipped with a bottom pressure sensor 3. A charge bag 4 is provided above the bottom block 2 in the blasting hole 1, and a charge column 5 is provided in the charge bag 4. An outward expansion plugging structure is provided in the middle of the charge bag 4. The outward expansion plugging structure is a structure that expands outward when in action. A control device is connected to the outward expansion plugging structure, and a signal input end of the control device is connected to the bottom pressure sensor 3. A plugging column 6 is provided on the upper part of the blasting hole 1.

[0019] In the utility model, the outward expansion blocking structure includes a middle partition plate 7, a connecting hole 8, a fixed piston 9, an air bag 10, and an air pipe 11. The middle partition plate 7 is horizontally installed in the middle of the medicine bag 4, and a plurality of connecting holes 8 are opened on the middle partition plate 7. A fixed piston 9 is slidably inserted on the middle partition plate 7. An air bag 10 is installed in the middle of the middle partition plate 7. The air bag 10 and the inner end of the fixed piston 9 are in contact. The air pipe 11 is connected to the air bag 10, and the air pipe 11 is connected to the control device. When working, the control device works to supply air to the air pipe 11 so that the air bag 10 expands and pushes the fixed piston 9 to expand outward, thereby fixing the middle position of the middle partition plate 7 and the medicine bag 4, and supporting the medicine column 5 above it through the middle partition plate 7, thereby reducing the pressure on the medicine column 5 at the bottom of the medicine bag 4, and connecting the medicine columns 5 on both sides of the middle partition plate 7 through the connecting hole 8, thereby playing a role in transferring explosion heat, so that the medicine columns 5 on the upper and lower sides of the middle partition plate 7 can trigger an explosion reaction.

[0020] In the utility model, the control device includes a control box 12, an air pump 13, a controller 14, and a signal line 15. The control box 12 is connected to the air pipe 11, and the air pump 13 is installed in the control box 12. The air pump 13 is connected to the air pipe 11. The control end of the air pump 13 is connected to the controller 14, and the controller 14 is connected to the signal line 15. The signal line 15 is electrically connected to the bottom pressure sensor 3.

[0021] In the present invention, the diameter of the connecting hole 8 is larger than the diameter of the medicine particles of the medicine column 5, thereby playing a connecting role.

[0022] In the present invention, the signal line 15 is a signal line 15 with a shielding layer, thereby reducing the impact of the outside world on the signal line 15 and preventing the electrical signal transmitted by the signal line 15 from affecting the outside world, such as generating induced current to cause the detonator to explode accidentally.

[0023] By those skilled in the art, all electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller 14 should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0024] In this embodiment:

[0025] When charging, the charge column 5 is supported by the charge bag 4. First, the bottom block 2 is placed at the bottom of the blasting hole 1, and then the charge bag 4 is placed in the blasting hole 1. When the charge bag 4 is in contact with the bottom pressure sensor 3, the pressure information of the bottom pressure sensor 3 is transmitted to the control device. When the control device determines that the pressure of the bottom pressure sensor 3 reaches the set value, the control device controls the outward expansion plugging structure to expand outward, thereby fixing the middle part of the charge bag 4 outward, and supporting the charge column 5 on the upper part of the charge bag 4 through the outward expansion plugging structure, thereby reducing the pressure on the charge column 5 at the bottom of the charge bag 4, and avoiding the blasting affected by the excessive pressure at the bottom of the charge column 5.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-diameter deep hole blasting plugging device, comprising a blasting hole (1), a bottom block (2), a bottom pressure sensor (3), a charge bag (4), a charge column (5), an outward expansion plugging structure, a control device, and a plugging column (6), characterized in that: The blasting hole (1) is provided with a bottom block (2) at the bottom, a bottom pressure sensor (3) is installed on the bottom block (2), a charge bag (4) is provided above the bottom block (2) in the blasting hole (1), a charge column (5) is contained in the charge bag (4), an outward expansion blocking structure is provided in the middle of the charge bag (4), the outward expansion blocking structure is a structure that expands outward when in action, a control device is connected to the outward expansion blocking structure, a signal input end of the control device is connected to the bottom pressure sensor (3), and a blocking column (6) is provided on the top of the blasting hole (1).

2. The large-diameter deep hole blasting plugging device according to claim 1 is characterized in that: The outward expansion blocking structure comprises a middle partition (7), a connecting hole (8), a fixed piston (9), an air bag (10), and an air pipe (11). The middle partition (7) is transversely installed in the middle of the medicine bag (4). The middle partition (7) is provided with a plurality of connecting holes (8). The fixed piston (9) is slidably inserted on the middle partition (7). The air bag (10) is installed in the middle of the middle partition (7). The inner ends of the air bag (10) and the fixed piston (9) are in contact with each other. The air bag (10) is connected to the air pipe (11), and the air pipe (11) is connected to the control device.

3. The large-diameter deep hole blasting plugging device according to claim 2 is characterized in that: The control device comprises a control box (12), an air pump (13), a controller (14), and a signal line (15); the control box (12) is connected to the air pipe (11); the air pump (13) is installed in the control box (12); the air pump (13) is connected to the air pipe (11); the control end of the air pump (13) is connected to the controller (14); the controller (14) is connected to the signal line (15); and the signal line (15) is electrically connected to the bottom pressure sensor (3).

4. The large-diameter deep hole blasting plugging device according to claim 2, characterized in that: The diameter of the connecting hole (8) is larger than the diameter of the drug particles in the drug column (5).

5. The large-diameter deep hole blasting plugging device according to claim 3 is characterized in that: The signal line (15) is a signal line (15) having a shielding layer.

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