CN112129185B - Water-containing blast hole charging device and charging method - Google Patents
Water-containing blast hole charging device and charging method Download PDFInfo
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- CN112129185B CN112129185B CN202010978917.4A CN202010978917A CN112129185B CN 112129185 B CN112129185 B CN 112129185B CN 202010978917 A CN202010978917 A CN 202010978917A CN 112129185 B CN112129185 B CN 112129185B
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- wrapping
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- water
- blast hole
- hole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The invention discloses a water-containing blast hole charging device which comprises a wrapping cartridge and a sleeve arranged on the periphery of the wrapping cartridge, wherein the inner wall of the wrapping cartridge is provided with a plurality of pointed bulges used for being inserted into a cartridge to clamp the cartridge tightly, and the upper and lower ports of the wrapping cartridge are respectively provided with a weighting ring; the surface of the sleeve is uniformly provided with water inlet holes, and a cavity between the sleeve and the wall of the wrapped medicine cylinder is filled with super absorbent polymer. The medicine wrapping barrel is of a hinged structure. The invention also provides a charging method based on the charging device. The device has low cost and simple and convenient operation; the weighting ring ensures that the bottom of the hole is loaded in place and adjacent cartridges are in close contact, so that the water-bearing section explosive of the blast hole is prevented from being refused to explode; the high water-absorbing polymer can absorb a large amount of water in the blast hole, reduce the water amount in the blast hole, and form hydrogel after the high water-absorbing polymer absorbs water and is saturated, so that hydrogel coupling charging is formed, the explosive energy utilization rate at the bottom of the blast hole is improved, and the lower rock crushing effect is enhanced.
Description
Technical Field
The invention relates to the technical field of engineering blasting, in particular to a water-containing blast hole charging device and a charging method.
Background
The engineering blasting is widely applied to rock mass excavation in engineering construction such as water conservancy and hydropower, traffic, mines, municipal works and the like. In blasting construction in rainy season or in the vicinity of rivers, lakes and seas, water with a certain depth is often accumulated in blast holes, and the influence of water-containing blast holes on the bottom charging quality of the blast holes and the crushing effect of bottom rock masses is obvious. The density of water in the blast hole is generally slightly larger than that of explosive due to the inclusion of rock debris and soil, and a first section of explosive roll in the blast hole is difficult to sink into water to be filled to the bottom of the hole, so that the explosive loading at the bottom of the blast hole is insufficient, and the rock mass crushing effect is poor; in addition, the distance between two adjacent sections of explosive rolls of the water-containing section in the blast hole is possibly beyond the sympathetic detonation distance, so that the explosive rolls in the blast hole cannot be fully propagated and exploded, and partial explosive rolls cannot be normally detonated, even resulting in a blind shot.
At present, the treatment measures for the water-containing blast hole in the blasting construction site are mainly to blow dry the water in the blast hole by an air compressor or connect a explosive cartridge at the bottom of the blast hole by an explosive fuse, but the water in the blast hole is difficult to blow completely in many cases, and the operation is complex by connecting the air compressor and the explosive fuse, so that the construction is inconvenient. In addition, some new water-containing blast hole charging structures appear at present, such as a charging structure for water-containing blast hole blasting disclosed in CN209326480U and a charging structure for water-containing blast hole blasting disclosed in CN 207113736U, and the methods have the problems of complicated operation, incapability of thoroughly solving the influence of water content in the blast hole on the charging quality and the crushing effect of the bottom of the blast hole and the like to different degrees.
Disclosure of Invention
The invention aims to provide a water-containing blast hole charging device and a charging method, aiming at the defects of the prior art, wherein the charging is in place, and the explosive energy utilization rate is high.
The technical scheme adopted by the invention is as follows: a water-containing blast hole charging device comprises a wrapping cartridge and a sleeve arranged on the periphery of the wrapping cartridge, wherein the inner wall of the wrapping cartridge is provided with a plurality of pointed bulges used for being inserted into a cartridge to clamp the cartridge, and the upper and lower ports of the wrapping cartridge are respectively provided with a weighting ring; the surface of the sleeve is uniformly provided with water inlet holes, and a cavity between the sleeve and the wall of the wrapped medicine cylinder is filled with super absorbent polymer.
According to the above scheme, wrap up in the cartridge case and be articulated formula structure, wrap up in the tablet including two, two one side edges of wrapping up in the tablet are articulated, and one of them opposite side edge of wrapping up in the tablet is equipped with the draw-in groove, and another opposite side edge of wrapping up in the tablet is equipped with the buckle with the draw-in groove adaptation, and two opposite side edges of wrapping up in the tablet link to each other through draw-in groove and buckle, form the joint seam.
According to the scheme, the inner diameter of the wrapping cylinder is 1-2 mm smaller than the diameter of the medicated roll, and the outer diameter of the wrapping cylinder is 2-4 mm larger than the inner diameter; the height of the wrapping cartridge is 1/5-1/4 of the length of the medicated roll.
According to the scheme, the pointed bulge is of a knife-edge-shaped pointed triangular structure and is 3-5 mm high; wrap up in the cartridge case inner wall and set up 2 ~ 3 rings of point arch along the axial, every circle includes 4 ~ 6 sharp archs of circumference interval arrangement.
According to the scheme, the water inlet hole is a circular hole with the diameter of 0.1-0.2 mm; a cavity is arranged between the sleeve and the wall of the medicine wrapping cylinder.
According to the scheme, the maximum particle size of the super absorbent polymer is larger than the diameter of the water inlet hole.
According to the scheme, the weighting ring is made of iron or lead alloy materials; the internal and external footpath of the weighting circle is adapted with the wrapping up cartridge case, and the height of the weighting circle is 5 ~ 10 mm.
The invention also provides a charging method based on the water-containing blast hole charging device, which comprises the following steps:
firstly, drilling a corresponding number of blast holes according to blasting design;
measuring the water depth in the blast hole by using a blast hole measuring rope;
selecting wrapping cartridges with proper sizes according to the diameter and the length of the explosive cartridge, and determining the number of the wrapping cartridges according to the depth of water in the blast hole;
step four, continuously and tightly hooping 1-2 medicine wrapping cylinders at the lower part of the cartridge, wherein the lower part of the cartridge is exposed out of 2-3 cm in length;
step five, the cartridges with the cartridge cases are loaded into the blast holes until the water in the holes is completely absorbed or the water depth is lower than that of the cartridges with the cartridge cases in the uppermost section;
step six, loading the conventional explosive roll without the medicine wrapping box and the explosive roll with the medicine wrapping box into the blast hole until the explosive is loaded to the designed single-hole dosage;
and step seven, using rock debris or stemming to tightly plug the blast hole.
The invention has the beneficial effects that: the hinged medicine wrapping barrel can tightly fix the medicine rolls; the sharp bulge arranged on the inner wall of the medicine wrapping cylinder can clamp the cartridge to prevent the cartridge from sliding off, and simultaneously can cut the cartridge to strengthen the bottom of the blast hole for charging; the upper and lower end weighted rings enable the explosive rolls to be submerged, ensure that the explosive rolls can be arranged at the bottom of the hole, and enable two adjacent sections of explosive rolls to be in close contact, thereby avoiding the distance between the two adjacent sections of explosive rolls exceeding the gap distance; the super absorbent polymer in the grid outside the cartridge case can absorb a large amount of water in the blast hole, so that the water amount in the blast hole is reduced, and meanwhile, the super absorbent polymer forms hydrogel after water absorption saturation to form hydrogel coupling charge, so that the explosive energy utilization rate at the bottom of the blast hole is improved, and the lower rock crushing effect is enhanced; the invention has reasonable structure design, low cost and convenient operation.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the overall structure of the wrapping tablet on the side containing the buckle.
Fig. 3 is a schematic view of the whole structure of the wrapping tablet at one side of the clamping groove.
Wherein: 1-wrapping box, 11-sleeve, 12-pointed bulge, 13-upper weighting ring, 14-lower weighting ring, 15-hinge belt, 16-clamp seam, 17-wrapping tablet, 21-super absorbent polymer, 22-buckle and 23-clamp groove.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The water-containing blast hole charging device shown in fig. 1 comprises a wrapping cartridge 1 and a sleeve 11 arranged on the periphery of the wrapping cartridge 1, wherein the inner wall of the wrapping cartridge 1 is provided with a plurality of pointed protrusions 12 for being inserted into a cartridge, and the upper and lower ports of the wrapping cartridge 1 are respectively provided with a weighting ring; water inlet holes are uniformly distributed on the surface of the sleeve, and a cavity between the sleeve and the outer wall of the dressing cylinder 1 is filled with super absorbent polymers 21; gaps are formed inside the mesh grid 11 on the outer side of the medicine wrapping cylinder 1. In the present invention, the super absorbent polymer may be a high molecular weight water absorbent resin.
Preferably, the wrapping cartridge 1 has a hinged structure, and comprises at least two arc-shaped wrapping tablets 17 connected in sequence.
Preferably, the pointed bulge 12 is of a knife-edge-shaped pointed triangular structure and is 3-5 mm high; wrap up in 1 inner wall of cartridge case and set up 2 ~ 3 rings of point arch 12 along the axial, every circle includes 4 ~ 6 sharp archs 12 of circumference interval arrangement.
In the invention, the medicine wrapping cylinder 1 is made of hard plastics; the inner diameter of the wrapping cylinder 1 is 1-2 mm smaller than the diameter of the medicated roll; the outer diameter of the wrapping cylinder 1 is 2-4 mm larger than the inner diameter; the height of the medicine wrapping barrel 1 is 1/5-1/4 of the length of the medicine roll. As shown in fig. 2 and 3, the wrapping cartridge 1 includes two wrapping tablets 17, one side of each of the two wrapping tablets 17 is hinged by a hinge or a hinge to form a connecting band 15, one side of each of the two wrapping tablets 17 is provided with a slot 23, the other side of each of the other wrapping tablets 17 is provided with a buckle 22 adapted to the slot 23, and the other sides of the two wrapping tablets 17 are connected by the slot 23 and the buckle 22 to form a clamping seam 16. The pointed bulge 12 wrapping the inner wall of the medicine cylinder 1 is made of hard plastics, and the pointed bulge 12 is in a pointed triangular structure and 3-5 mm high; wrap up in 1 inner wall of cartridge case and set up 2 ~ 3 rings of point arch 12 along the axial, every circle includes 4 ~ 6 sharp archs 12 of circumference interval arrangement. The weighting ring is made of iron or lead alloy materials, and has higher density; the inner diameter and the outer diameter of the weighting ring are matched with the wrapping cylinder 1, and the height of the weighting ring is 5-10 mm; the upper end of the wrapping medicine cylinder 1 is provided with an upper weighting ring 13, and the lower end of the wrapping medicine cylinder 1 is provided with a lower weighting ring 14. The sleeve 11 is made of hard plastics, the water inlet hole is a circular hole with the diameter of 0.1-0.2 mm, the super absorbent polymer 21 filled in the water inlet hole is made of a high polymer synthetic material, the water absorption performance is good, and the maximum particle size of the super absorbent polymer 21 is larger than the diameter of the water inlet hole.
A charging method based on the water-containing blast hole charging device comprises the following steps:
firstly, drilling a corresponding number of blast holes according to blasting design;
measuring the water depth in the blast hole by using a blast hole measuring rope;
selecting the wrapping cartridges 1 with proper sizes according to the diameter and the length of the explosive cartridge, and determining the number of the wrapping cartridges 1 according to the water depth in the blast hole;
step four, continuously and tightly hooping 1-2 medicine wrapping cylinders 1 at the lower part of the medicated roll, wherein the exposed length of the lower part of the medicated roll is 2-3 cm;
fifthly, the cartridges with the wrapping cartridge 1 are loaded into the blast hole until the water in the hole is completely absorbed or the water depth is lower than that of the cartridge with the wrapping cartridge 1 in the uppermost section;
step six, loading the conventional explosive roll which is not provided with the wrapping medicine cylinder 1 and the explosive roll with the wrapping medicine cylinder 1 into the blast hole until the explosive is loaded to the designed single-hole dosage;
and step seven, using rock debris or stemming to tightly plug the blast hole.
And (2) excavating a material field of a certain island, excavating a mountain body by using a drilling and blasting method to obtain stones, wherein the blasting holes drilled with stones are generally and seriously filled with water, the diameter of each blasting hole is 115mm, the diameter of each cartridge is 90mm, the length of each cartridge is 45cm, the charging length of each blasting hole is 11.0m, and the blocking length is 3.0 m. The blast hole charging method comprises the following steps:
firstly, drilling a corresponding number of blast holes according to blasting design;
measuring the water depth in the blast hole by using a blast hole measuring rope, wherein the average water depth in the blast hole is 1.0 m;
selecting a wrapping cylinder 1 with a proper size according to the diameter and the length of the cartridge, wherein the inner diameter of the wrapping cylinder 1 is 88mm, the outer diameter of the wrapping cylinder 1 is 92mm, and the height of the wrapping cylinder is 10 cm; selecting a proper number of wrapping cartridges 1 according to the water depth in each blast hole, and preparing 8-10 wrapping cartridges in each blast hole;
step four, continuously and tightly hooping 2 medicine wrapping cylinders 1 at the lower part of the medicine roll, wherein the lower part of the medicine roll is exposed out of 2-3 cm in length;
fifthly, the cartridges with the wrapping cartridge 1 are loaded into the blast hole until the water in the hole is completely absorbed or the water depth is lower than that of the cartridge with the wrapping cartridge 1 in the uppermost section;
step six, loading the conventional explosive roll into a blast hole along with the explosive roll with the wrapping cartridge 1 until the explosive is loaded to the designed single-hole dosage;
and step seven, using rock debris or stemming to tightly plug the blast hole.
Finally, the above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields using the contents of the present specification and the attached drawings are included in the scope of the present invention.
Claims (8)
1. The water-containing blast hole charging device is characterized by comprising a wrapping cartridge and a sleeve arranged on the periphery of the wrapping cartridge, wherein the inner wall of the wrapping cartridge is provided with a plurality of pointed bulges used for being inserted into a cartridge to clamp the cartridge, and the upper and lower ports of the wrapping cartridge are respectively provided with a weighting ring; the surface of the sleeve is uniformly provided with water inlet holes, and a cavity between the sleeve and the wall of the wrapped medicine cylinder is filled with super absorbent polymer.
2. The aqueous blasthole charging means of claim 1 wherein said wrapping cartridge is of a hinged type and comprises two wrapping sheets, one side of each wrapping sheet is hinged, one side of each wrapping sheet is provided with a slot, the other side of each wrapping sheet is provided with a buckle adapted to the slot, and the other sides of the two wrapping sheets are connected through the slot and the buckle to form a clamping seam.
3. The aqueous blasthole charge of claim 1 wherein the inner diameter of the wrapped cartridge is 1 to 2mm smaller than the diameter of the stick and the outer diameter of the wrapped cartridge is 2 to 4mm larger than the inner diameter; the height of the wrapping cartridge is 1/5-1/4 of the length of the medicated roll.
4. The water-containing blasthole charging device as in claim 1, wherein the pointed projection is of a knife-edge-shaped pointed triangular structure and is 3-5 mm high; wrap up in the cartridge case inner wall and set up 2 ~ 3 rings of point arch along the axial, every circle includes 4 ~ 6 sharp archs of circumference interval arrangement.
5. A water-containing blasthole charge according to claim 1 wherein the water inlet is a circular hole having a diameter of 0.1 to 0.2 mm; a cavity is arranged between the sleeve and the wall of the medicine wrapping cylinder.
6. An aqueous blasthole charge as in claim 5 wherein the superabsorbent polymer has a maximum particle size greater than the diameter of the feedhole.
7. A watery blasthole charge as claimed in claim 1 wherein the weighted collar is formed from an iron or lead alloy; the internal and external footpath of the weighting circle is adapted with the wrapping up cartridge case, and the height of the weighting circle is 5 ~ 10 mm.
8. A method of charging an aqueous blasthole charge according to any of claims 1 to 7, comprising the steps of:
firstly, drilling a corresponding number of blast holes according to blasting design;
measuring the water depth in the blast hole by using a blast hole measuring rope;
selecting wrapping cartridges with proper sizes according to the diameter and the length of the explosive cartridge, and determining the number of the wrapping cartridges according to the depth of water in the blast hole;
step four, continuously and tightly hooping 1-2 medicine wrapping cylinders at the lower part of the cartridge, wherein the lower part of the cartridge is exposed out of 2-3 cm in length;
step five, the cartridges with the cartridge cases are loaded into the blast holes until the water in the holes is completely absorbed or the water depth is lower than that of the cartridges with the cartridge cases in the uppermost section;
step six, loading the conventional explosive roll without the medicine wrapping box and the explosive roll with the medicine wrapping box into the blast hole until the explosive is loaded to the designed single-hole dosage;
and step seven, using rock debris or stemming to tightly plug the blast hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010978917.4A CN112129185B (en) | 2020-09-17 | 2020-09-17 | Water-containing blast hole charging device and charging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978917.4A CN112129185B (en) | 2020-09-17 | 2020-09-17 | Water-containing blast hole charging device and charging method |
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| CN112129185A CN112129185A (en) | 2020-12-25 |
| CN112129185B true CN112129185B (en) | 2021-10-01 |
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| CN113188386B (en) * | 2021-05-08 | 2024-03-26 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Gel coupling blasting method for roof cutting of fracture-containing roof area of coal mine |
| CN115143854B (en) * | 2022-08-16 | 2023-07-25 | 南昌大学 | Blast hole fracturing column and blasting construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100056923A (en) * | 2008-11-20 | 2010-05-28 | 원화코퍼레이션 주식회사 | Non-blown out instrument for blasting |
| CN202709899U (en) * | 2012-06-26 | 2013-01-30 | 中铁港航局集团有限公司 | Charge weighting device for underwater drilling and blasting |
| CN103940308B (en) * | 2014-04-09 | 2016-05-18 | 中国矿业大学 | Containing airspace loading method and the device in water cannon hole |
| CN204608845U (en) * | 2015-02-02 | 2015-09-02 | 上海市建筑科学研究院 | Mud extractor |
| CN106288997B (en) * | 2016-09-26 | 2018-06-15 | 宏大矿业有限公司 | Blasthole heat-proof device and blasting method |
| CN208059708U (en) * | 2017-12-27 | 2018-11-06 | 广西桂物爆破工程有限公司 | Blasting hole with water powder charge auxiliary device |
| CN210180294U (en) * | 2019-04-24 | 2020-03-24 | 本钢板材股份有限公司 | Supporting device for inner cushion layer of medium-length hole blasting hole |
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