Pre-splitting blasting blast hole charging structure

Abstract

The utility model discloses a pre-splitting blasting hole charging structure, which relates to the technical field of pre-splitting hole blasting charging and comprises a stress rope and a plurality of emulsion explosives. Detonating cords are connected to the emulsion explosives; an adhesive tape adhered to the stress rope is adhered to the emulsion explosive; one end of the stress rope extends into the pre-splitting hole, and the other end of the stress rope extends out of the pre-splitting hole and is tied with the hanging ring; the stress rope is tied with the hanging ring, compared with connection with a large stone, the stress rope is not prone to falling off, the stability after charging can be improved, then bases with different diameters are selectively installed on the fixing cover, it can be guaranteed that the bases cannot enter the presplitting hole, and compared with the situation that the stone with the corresponding size is found on site, operation is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to precrack hole blasting charge technology field, concretely is a kind of precrack blasting blasthole charge structure. BACKGROUND

[0002] Pre-splitting blasting technique is a kind of slope control blasting. Mainly, along the slope line according to the designed slope height, slope, dense blasthole is arranged in excavation boundary, and not coupled charge or filling low-power explosive is used, and a certain width of through crack is formed between blasting and reserved area before main blasting area blasting, to weaken the damage of main blasting to reserved rock mass, and form the blasting operation of flat profile surface.

[0003] At present, when precrack hole is charged, after the column is loaded into blasthole, the force rope should be firmly tied outside the hole, to avoid the column in hole sliding to the bottom of hole, to cause the problem of poor blasting effect.

[0004] But applicant finds that currently, it is generally tied greater than hole position big stone outside, which needs to find corresponding size stone in temporary scene, and it is troublesome, and the force rope is not stable when being tied on the big stone with strange shape, to cause the problem of poor use effect, therefore, we provide a kind of precrack blasting blasthole charge structure. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of precrack blasting blasthole charge structure to solve the problem raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of precrack blasting blasthole charge structure, including, force rope and multiple emulsion explosives;

[0007] The emulsion explosive is connected with detonating cord;

[0008] The emulsion explosive is connected with detonating cord;

[0009] One end of the force rope extends into precrack hole, and the other end of the force rope extends out of precrack hole and is connected with lifting ring;

[0010] The bottom of the lifting ring is connected with counterweight assembly.

[0011] As a preferred scheme of the precrack blasting blasthole charge structure of the utility model, wherein: the counterweight assembly includes fixed cover and base, the lifting ring is connected with fixed cover, the bottom of fixed cover is in contact with base, and fixed cover is movably connected with base, the diameter of base is greater than the diameter of precrack hole, and the top of base is placed with stone in fixed cover.

[0012] As a preferred scheme of the pre-splitting blasting blasthole charging structure, the top of the base is provided with a screw rod, the inner wall of the fixing cover is provided with a fixing rod, and the bottom of the fixing rod is provided with a threaded hole connected with the screw rod.

[0013] As a preferred scheme of the pre-splitting blasting blasthole charging structure, the inner wall of the fixing cover is provided with a buffer lining.

[0014] As a preferred scheme of the pre-splitting blasting blasthole charging structure, the outer part of the fixing rod is provided with a buffer sleeve.

[0015] As a preferred scheme of the pre-splitting blasting blasthole charging structure, the buffer sleeve is connected with the buffer lining.

[0016] As a preferred scheme of the pre-splitting blasting blasthole charging structure, the top of the base is provided with a buffer pad, and the buffer pad is located in the fixing cover.

[0017] Compared with the prior art, the pre-splitting blasting blasthole charging structure has the following beneficial effects:

[0018] 1. The force-bearing rope is connected with the lifting ring, which is not easy to fall off compared with being connected with a large stone block, so that the stability after charging can be improved, then different diameters of the base are selected and installed on the fixing cover, so that it can be ensured that the base will not enter the pre-splitting hole, and compared with finding a stone block of the corresponding size on the site, the operation is more convenient.

[0019] 2. The fixing cover is adopted, which can reduce the production cost, then the stone block found on the site is put between the fixing cover and the base for counterweight, and the convenience is high.

[0020] 3. By arranging the buffer lining, the buffer sleeve and the buffer pad, the impact on the fixing cover, the fixing rod and the base caused by loading the stone block can be avoided, so that the stone block is avoided from being exposed before blasting. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a whole structure schematic view of the pre-splitting blasting blasthole charging structure.

[0022] Fig. 2 It is a counterweight assembly structure schematic view of the pre-splitting blasting blasthole charging structure.

[0023] In the drawing: 1, force-bearing rope; 2, emulsion explosive; 3, detonating cord; 4, adhesive tape; 5, lifting ring; 6, fixing cover; 7, base; 8, screw rod; 9, fixing rod; 10, threaded hole; 11, buffer lining; 12, buffer sleeve; 13, buffer pad. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0025] As mentioned in the background, in the prior art, a large stone block larger than the hole position is generally bound outside the hole, which is often troublesome to find a stone block of corresponding size on site, and the force rope is not stable when bound to the large stone block with a strange shape, thereby causing the problem of poor use effect. The utility model provides a pre-splitting blasting hole charging structure.

[0026] Embodiment 1

[0027] Reference Figs. 1-2 A pre-splitting blasting hole charging structure, comprising a force rope 1 and a plurality of emulsion explosives 2;

[0028] The emulsion explosives 2 are connected with detonating cords 3;

[0029] The emulsion explosives 2 are connected with the force rope 1, and the emulsion explosives 2 are fixed by the adhesive tape 4;

[0030] One end of the force rope 1 extends into the pre-splitting hole, and the other end of the force rope 1 extends out of the pre-splitting hole and is connected with a lifting ring 5, which is not easy to fall off compared with the large stone block;

[0031] The bottom of the lifting ring 5 is connected with a counterweight assembly, which plays a counterweight effect and avoids the emulsion explosives 2 from piling up together due to the downward movement of the force rope 1.

[0032] The counterweight assembly comprises a fixed cover 6 and a base 7, the lifting ring 5 is connected with the fixed cover 6, the bottom of the fixed cover 6 is in contact with the base 7, and the fixed cover 6 is movably connected with the base 7, and the diameter of the base 7 is greater than the diameter of the pre-splitting hole, so that the base 7 cannot enter the pre-splitting hole, thereby ensuring that the base 7 will not enter the pre-splitting hole, which is more convenient to operate compared with finding a stone block of corresponding size on site. In order to counterweight, a stone is placed on the top of the base 7 in the fixed cover 6, and the stone can be found more conveniently on site.

[0033] The top of the base 7 is provided with a screw rod 8, the inner wall of the top of the fixed cover 6 is provided with a fixed rod 9, and the bottom of the fixed rod 9 is provided with a threaded hole 10 connected with the screw rod 8, so that the screw rod 8 of the base 7 is screwed into the threaded hole 10, and the base 7 and the fixed cover 6 can be quickly assembled together.

[0034] Embodiment 2

[0035] With reference to Figs. 1-2 The inner wall of the fixed cover 6 is provided with a buffer lining 11, the outer part of the fixed rod 9 is provided with a buffer sleeve 12, the buffer sleeve 12 is connected with the buffer lining 11, the top of the base 7 is provided with a buffer pad 13, and the buffer pad 13 is located in the fixed cover 6, wherein the buffer lining 11, the buffer sleeve 12 and the buffer pad 13 are all rubber materials, and the purpose is to avoid the impact on the fixed cover 6, the fixed rod 9 and the base 7 when the stones are loaded, so as to avoid the exposure of the stones before blasting.

[0036] The remaining structures are the same as those of Embodiment 1.

[0037] The emulsion explosive 2 is fixed on the force rope 1 by using the adhesive tape 4, and is connected by using the detonating cord 3, then the stones are loaded into the fixed cover 6, a base 7 with a diameter larger than that of the pre-splitting hole is selected and installed at the bottom of the fixed cover 6 to fix the force rope 1, finally the stemming is filled, the electronic detonator delay time is set and connected, the network is set, and the safety warning is performed before blasting.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-splitting blast hole charging structure, characterized in that: include, A tension rope (1) and multiple emulsion explosives (2); Each of the emulsion explosives (2) is connected to a detonating cord (3); The emulsion explosive (2) is bonded with tape (4) that is bonded to the tension rope (1); One end of the force rope (1) extends into the pre-splitting hole, and the other end of the force rope (1) extends out of the pre-splitting hole and is tied to the lifting ring (5); The bottom of the lifting ring (5) is connected to a counterweight assembly.

2. The pre-splitting blast hole charging structure according to claim 1, characterized in that: The counterweight assembly includes a fixed cover (6) and a base (7). The lifting ring (5) is connected to the fixed cover (6). The bottom of the fixed cover (6) is in contact with the base (7), and the fixed cover (6) is movably connected to the base (7). The diameter of the base (7) is larger than the diameter of the pre-cracked hole. The top of the base (7) is filled with stones located inside the fixed cover (6).

3. The pre-splitting blast hole charging structure according to claim 2, characterized in that: The base (7) is provided with a screw (8) at the top, and the top inner wall of the fixing cover (6) is provided with a fixing rod (9). The bottom of the fixing rod (9) is provided with a threaded hole (10) connected to the screw (8).

4. The pre-splitting blast hole charging structure according to claim 3, characterized in that: The inner wall of the fixed cover (6) is provided with a cushioning liner (11).

5. The pre-splitting blast hole charging structure according to claim 4, characterized in that: A buffer sleeve (12) is provided on the outside of the fixing rod (9).

6. The pre-splitting blast hole charging structure according to claim 5, characterized in that: The buffer sleeve (12) is connected to the buffer liner (11).

7. The pre-splitting blast hole charging structure according to claim 2, characterized in that: The base (7) is provided with a buffer pad (13) on its top, and the buffer pad (13) is located inside the fixing cover (6).

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