Smooth blasting auxiliary device

Abstract

The utility model provides a smooth blasting auxiliary device and belongs to the field of smooth blasting, the smooth blasting auxiliary device comprises a first fixing piece, a second fixing piece and connecting pieces, the connecting pieces are arranged at the ends of the two sides of the first fixing piece, and the first fixing piece is connected with the second fixing piece through the connecting pieces and spliced to form a clamping mechanism with the two sides protruding. The first fixing piece and the second fixing piece are arranged at intervals. The explosive package can be fixed to the center in the blast hole through the protruding parts on the two sides of the clamping mechanism, it can be guaranteed that shock waves and gas generated by explosive explosion are evenly distributed in the blast hole, and therefore the blasting efficiency and effect are improved. Secondly, in the explosion process of the explosive charge, stress waves generated by explosion of the explosive charge and explosion gas can directionally act on the explosion hole wall in the gap direction through gaps of the protruding parts on the two sides of the clamping mechanism, so that radial cracks of exploded rocks are preferentially expanded in a preset area, and then the purposes of improving the flatness of the explosion surface and improving the explosion efficiency are achieved. And the blasting efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of smooth blasting, and in particular to a smooth blasting auxiliary device. Background Art

[0002] Smooth blasting is a controlled blasting technique that maintains a smooth, undamaged new excavation surface. It involves drilling a row of smooth blasting holes along the designed excavation contour, with spacing matching the minimum resistance line. Using uncoupled charges or other specialized charge structures, after the main excavation is blasted, the charges in the smooth blasting holes are simultaneously detonated, creating a smooth, flat excavation surface that extends through the smooth blasting holes.

[0003] Smooth blasting involves placing parallel blastholes at decreasing intervals along the excavation contour. Uncoupled charges with reduced charge amounts are then detonated simultaneously in these smooth blastholes, resulting in a smooth, flat surface along the centerline connecting the blastholes. There are several mechanisms for creating a smooth rock surface with smooth blasting, but the most widely accepted theory is the interaction of stress waves and explosive gas pressure. This theory posits that the primary effect of stress waves is to generate initial radial cracks around the blastholes. Subsequently, the quasi-static pressure of the high-pressure explosive gas propagates these radial cracks. In actual application in underground mines, a non-standard uncoupled charging form is usually adopted, that is, the diameter of the explosive roll is smaller than the diameter of the blasthole, and the explosive roll is only loaded into the blasthole, so that the explosive falls naturally at the bottom of the blasthole cross section, causing the bottom of the roll to fit the blasthole wall, while there is a certain space between the roll and the blasthole wall in other directions. This charging form cannot effectively form cracks in the direction of the blasthole centerline, which has a great impact on the smooth surface blasting effect, resulting in undesirable results such as uneven blasting surface, increased spacing between smooth holes, and increased charging amount. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the present application provides a smooth surface blasting auxiliary device, which fixes the explosive package in a clamping mechanism and fixes the clamping mechanism in the blast hole through the protrusions on both sides of the clamping mechanism. The gap between the protrusions on both sides of the clamping mechanism can direct the stress wave and the explosive gas generated by the explosion to act on the blast hole wall in the direction of the gap during the explosion of the explosive package, thereby achieving the technical effect of improving the flatness of the blasting surface.

[0005] An embodiment of the present application provides a smooth blasting auxiliary device for fixing an explosive charge in a blasthole, comprising a first fixing member, a second fixing member and a connecting member, wherein the connecting member is arranged at both side ends of the first fixing member, the first fixing member is connected to the second fixing member through the connecting member, and the first fixing member is spliced ​​to form a clamping mechanism protruding on both sides, the first fixing member and the second fixing member are arranged at intervals, and gaps are formed at the protrusions on both sides of the clamping mechanism.

[0006] In the technical solution of the embodiment of the present application, the protrusions on both sides of the clamping mechanism can be used to fix the clamping mechanism within the blasthole, and the explosive charge can be fixed to the center of the blasthole, which can help ensure that the shock wave and gas generated by the explosive explosion are evenly distributed within the blasthole, thereby improving the efficiency and effectiveness of the blasting. Secondly, the first and second fixing members are arranged at intervals, and a gap is formed between the protrusions on both sides of the clamping mechanism. During the explosion of the explosive charge, the gap between the protrusions on both sides of the clamping mechanism can allow the stress wave generated by the explosion of the explosive charge and the explosive gas to act in a directional manner on the blasthole wall in the direction of the gap, causing the radial cracks in the blasted rock to preferentially expand within a predetermined area, thereby achieving the technical effect of improving the flatness of the blasting surface and further improving the efficiency of the blasting.

[0007] In some embodiments, the connecting member includes a first fixed block, a second fixed block and a pin, the first fixed block is set at the end of the first fixing member, the second fixed block is set at the end of the second fixing member, and the first fixed block and the second fixed block are both provided with through holes. When the first fixing member and the second fixing member are spliced ​​to form a clamping mechanism, the pin passes through the through holes on the first fixing member and the second fixing member in turn.

[0008] In this embodiment, the first fixing member and the second fixing member can be detachably connected through the bayonet pin, the first fixing block and the second fixing block, thereby reducing the difficulty of loading the explosive charge into the clamping mechanism by the staff.

[0009] In some embodiments, the bayonet includes a screw and a nut, and the screw is connected to the nut after passing through the through hole.

[0010] In this embodiment, the bolts and nuts matched with the bolts can effectively prevent the pins from falling off when workers are carrying the smooth blasting auxiliary device, thereby ensuring the stability of the smooth blasting auxiliary device when loading explosive packages.

[0011] In some embodiments, a rotating member is further included, the connecting member is arranged at the first end of the first fixing member, the rotating member is arranged at the second end of the first fixing member, and the first fixing member is rotatably connected to the second fixing member through the rotating member.

[0012] In this embodiment, the first fixing member and the second fixing member are combined to form a flip structure through the rotating member, which further reduces the difficulty of operation for the staff.

[0013] In some embodiments, the cross-section of the clamping mechanism is an elliptical structure.

[0014] In this embodiment, the first fixing member and the second fixing member of the arc structure can make the stress wave and the explosive gas generated by the explosion of the explosive charge more concentrated in the gap of the clamping mechanism, thereby further improving the efficiency of the blasting.

[0015] In some embodiments, the connecting members are spaced apart and arranged in the gap along the axial direction of the clamping structure.

[0016] In this embodiment, by arranging multiple groups of connecting members between the first fixing member and the second fixing member, not only the patency of the gap between the first fixing member and the second fixing member can be ensured, but also the stability of the first fixing member and the second fixing member during use can be ensured.

[0017] In some embodiments, a gasket is further included. The gasket is provided on both the first fixing member and the second fixing member. The gasket is detachably connected to the first fixing member and the second fixing member. The first fixing member and the second fixing member clamp the explosive package through the gasket.

[0018] In this embodiment, the distance between the explosive charge and the first fixing member or the second fixing member is compensated by the spacer, thereby enabling the first fixing member and the second fixing member to fix the explosive charge more stably.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings used in this application. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0021] Figure 1 A schematic diagram of a smooth blasting auxiliary device in use provided in an embodiment of the present application;

[0022] Figure 2 A schematic structural diagram of a smooth blasting auxiliary device provided in an embodiment of the present application;

[0023] Figure 3 For this application Figure 2 A partial enlarged schematic diagram of part A;

[0024] Figure 4A top view of a smooth blasting auxiliary device provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 1. First fixing member; 2. Second fixing member; 3. Connecting member; 31. First fixing block;

[0027] 32. Second fixed block; 33. Bayonet pin; 4. Gap; 5. Explosive charge; 6. Rotating member;

[0028] 7. Gasket. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0031] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0034] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0035] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application 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 a limitation on the embodiments of the present application.

[0036] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0037] Smooth blasting is a controlled blasting technique that maintains a smooth, undamaged new excavation surface. It involves drilling a row of smooth blasting holes along the designed excavation contour, with spacing matching the minimum resistance line. Using uncoupled charges or other specialized charge structures, after the main excavation is blasted, the charges in the smooth blasting holes are simultaneously detonated, creating a smooth, flat excavation surface that extends through the smooth blasting holes.

[0038] Smooth blasting involves placing parallel blastholes at decreasing intervals along the excavation contour. Uncoupled charges with reduced charge amounts are then detonated simultaneously in these smooth blastholes, resulting in a smooth, flat surface along the centerline connecting the blastholes. There are several mechanisms for creating a smooth rock surface with smooth blasting, but the most widely accepted theory is the interaction of stress waves and explosive gas pressure. This theory posits that the primary effect of stress waves is to generate initial radial cracks around the blastholes. Subsequently, the quasi-static pressure of the high-pressure explosive gas propagates these radial cracks. In actual application in underground mines, a non-standard uncoupled charging form is usually adopted, that is, the diameter of the explosive roll is smaller than the diameter of the blasthole, and the explosive roll is only loaded into the blasthole, so that the explosive falls naturally at the bottom of the blasthole cross section, causing the bottom of the roll to fit the blasthole wall, while there is a certain space between the roll and the blasthole wall in other directions. This charging form cannot effectively form cracks in the direction of the blasthole centerline, which has a great impact on the smooth surface blasting effect, resulting in undesirable results such as uneven blasting surface, increased spacing between smooth holes, and increased charging amount.

[0039] In order to solve the technical problem that the existing charging form cannot effectively form cracks in the direction of the center line of the blasthole, thereby having a great impact on the smooth blasting effect, resulting in adverse results such as uneven blasting surface, increased spacing between smooth holes, and increased charging amount, the present application provides a smooth blasting auxiliary device, wherein, by fixing the explosive package 5 in the clamping mechanism, and fixing the clamping mechanism in the blasthole through the protrusions on both sides of the clamping mechanism, the gap 4 between the protrusions on both sides of the clamping mechanism can direct the stress wave and explosive gas generated by the explosion to act on the blasthole wall in the direction of the gap 4 during the explosion of the explosive package 5, thereby achieving the technical effect of improving the flatness of the blasting surface.

[0040] Please refer to Figure 1-2 ,in, Figure 1 This is a schematic diagram of a smooth blasting auxiliary device in use provided in an embodiment of the present application. Figure 2 This is a structural schematic diagram of a smooth blasting auxiliary device provided in an embodiment of the present application. The smooth blasting auxiliary device is mainly used to fix the explosive bag 5 in the blast hole. The smooth blasting auxiliary device includes a first fixing member 1, a second fixing member 2 and a connecting member 3. The connecting member 3 is arranged on both side ends of the first fixing member 1. The first fixing member 1 is connected to the second fixing member 2 through the connecting member 3, and is spliced ​​to form a clamping mechanism protruding on both sides. The first fixing member 1 and the second fixing member 2 are arranged at intervals, and a gap 4 is formed at the protrusions on both sides of the clamping mechanism.

[0041] Specifically, during use, the explosive charge 5 is fixed to the clamping structure formed by the first fixing member 1 and the second fixing member, and the clamping mechanism is placed in the blasthole. The protrusions on both sides of the clamping mechanism can fix the clamping mechanism in the blasthole, and the explosive charge 5 is fixed to the center of the blasthole, which can help ensure that the shock wave and gas generated by the explosive explosion are evenly distributed inside the blasthole, thereby improving the efficiency and effect of blasting. Secondly, the first fixing member 1 and the second fixing member 2 are arranged at intervals, and the protrusions on both sides of the clamping mechanism form a gap 4. During the explosion of the explosive charge 5, the gap 4 between the protrusions on both sides of the clamping mechanism can allow the stress wave generated by the explosion of the explosive charge 5 and the explosive gas to act in a directional manner on the blasthole wall in the direction of the gap 4, so that the radial cracks of the blasted rock are preferentially expanded in the predetermined area, thereby achieving the technical effect of improving the flatness of the blasting surface and further improving the efficiency of blasting.

[0042] For further information, please refer to Figure 3 In this embodiment of the present application, the connecting member 3 includes a first fixing block 31, a second fixing block 32, and a latch 33. The first fixing block 31 is disposed at the end of the first fixing member 1, and the second fixing block 32 is disposed at the end of the second fixing member 2. Both the first fixing block 31 and the second fixing block 32 are provided with through holes. When the first fixing member 1 and the second fixing member 2 are assembled to form the clamping mechanism, the latch 33 sequentially passes through the through holes of the first fixing member 1 and the second fixing member 2. In this embodiment, the latch 33, the first fixing block 31, and the second fixing block 32 enable a detachable connection between the first fixing member 1 and the second fixing member 2, thereby reducing the difficulty for personnel when loading the explosive charge 5 into the clamping mechanism.

[0043] Furthermore, in an embodiment of the present application, the latch 33 includes a screw and a nut, and the screw is connected to the nut after passing through the through hole. In this embodiment, the bolt and the nut adapted to the bolt can effectively prevent the latch 33 from falling off when the staff is carrying the smooth blasting auxiliary device, thereby ensuring the stability of the smooth blasting auxiliary device when loading the explosive package 5.

[0044] Furthermore, in the embodiment of the present application, a rotating member 6 is further included. The connecting member 3 is disposed at the first end of the first fixing member 1, and the rotating member 6 is disposed at the second end of the first fixing member 1. The first fixing member 1 is rotatably connected to the second fixing member 2 via the rotating member 6. In this embodiment, the rotating member 6 allows the first fixing member 1 and the second fixing member 2 to be combined to form a flip structure, further reducing the difficulty of operation for the operator.

[0045] Furthermore, in the embodiment of the present application, the rotating member 6 and the connecting member 3 are incompletely welded to the first fixing member 1 and the second fixing member 2, so that during the blasting process of the explosive charge 5, the first fixing member 1 and the second fixing member 2 can be broken by the stress wave and the explosive gas generated by the explosive charge 5 during the blasting, so that the connecting member 3 and the rotating member 6 between the first fixing member 1 and the second fixing member 2 can be broken, thereby expanding the gap 4 between the first fixing member 1 and the second fixing member 2, so that the stress wave and the explosive gas generated by the explosion of the explosive charge 5 can be more fully and directionally acted on the blasthole wall in the direction of the gap 4.

[0046] Furthermore, in the embodiment of the present application, the first fixing member 1 and the second fixing member 2 are both arc-shaped structures, and the cross-section of the clamping mechanism formed by splicing the first fixing member 1 and the second fixing member 2 is an elliptical structure. In this embodiment, the first fixing member 1 and the second fixing member 2 with an arc-shaped structure can make the stress wave and the explosive gas generated by the explosion of the explosive charge 5 more concentrated in the gap 4 of the clamping mechanism, thereby further improving the efficiency of the blasting.

[0047] Furthermore, in the embodiment of the present application, the connecting members 3 are arranged at intervals in the gap 4 along the axial direction of the clamping structure. By arranging multiple groups of connecting members 3 between the first fixing member 1 and the second fixing member 2, not only the patency of the gap 4 between the first fixing member 1 and the second fixing member 2 can be ensured, but also the stability of the first fixing member 1 and the second fixing member 2 during use can be ensured.

[0048] For further information, please refer to Figure 4 In the embodiment of the present application, a gasket 7 is further included. The first fixing member 1 and the second fixing member 2 are both provided with a gasket 7. The gasket 7 is detachably connected to the first fixing member 1 and the second fixing member 2. The first fixing member 1 and the second fixing member 2 clamp the explosive package 5 through the gasket 7. In the present embodiment, the gasket 7 is used to compensate for the distance between the explosive package 5 and the first fixing member 1 or the second fixing member 2, so that the first fixing member 1 and the second fixing member 2 can more stably fix the explosive package 5.

[0049] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and any embodiments having substantially the same structure and effect as the technical concept within the scope of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the present application, any other embodiments that can be conceived by those skilled in the art and that combine some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A smooth blasting auxiliary device for fixing explosive charges in blast holes, characterized in that: It includes a first fixing member, a second fixing member and a connecting member, the connecting member is arranged at the two side ends of the first fixing member, the first fixing member is connected to the second fixing member through the connecting member, and is spliced ​​to form a clamping mechanism protruding on both sides, the first fixing member and the second fixing member are arranged at intervals, and gaps are formed at the protrusions on both sides of the clamping mechanism.

2. The smooth blasting auxiliary device according to claim 1, characterized in that: The connecting member includes a first fixed block, a second fixed block and a pin. The first fixed block is set at the end of the first fixing member, and the second fixed block is set at the end of the second fixing member. Both the first fixed block and the second fixed block are provided with through holes. When the first fixing member and the second fixing member are spliced ​​to form a clamping mechanism, the pin passes through the through holes on the first fixing member and the second fixing member in sequence.

3. The smooth blasting auxiliary device according to claim 2, characterized in that: The bayonet includes a screw and a nut, and the screw is connected with the nut after passing through the through hole.

4. The smooth blasting auxiliary device according to claim 2, characterized in that: It also includes a rotating member, the connecting member is arranged at the first end of the first fixing member, the rotating member is arranged at the second end of the first fixing member, and the first fixing member is rotatably connected to the second fixing member through the rotating member.

5. The smooth blasting auxiliary device according to claim 1, characterized in that: The cross section of the clamping mechanism is an elliptical structure.

6. The smooth blasting auxiliary device according to claim 1, characterized in that: The connecting members are arranged in the gap at intervals along the axial direction of the clamping mechanism.

7. The smooth blasting auxiliary device according to claim 1, characterized in that: It also includes a gasket, which is provided on both the first fixing member and the second fixing member. The gasket is detachably connected to the first fixing member and the second fixing member, and the first fixing member and the second fixing member clamp the explosive package through the gasket.

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