CN213021263U - Water-in-water type explosive special for hydraulic blasting - Google Patents
Water-in-water type explosive special for hydraulic blasting Download PDFInfo
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- CN213021263U CN213021263U CN202021980082.8U CN202021980082U CN213021263U CN 213021263 U CN213021263 U CN 213021263U CN 202021980082 U CN202021980082 U CN 202021980082U CN 213021263 U CN213021263 U CN 213021263U
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Abstract
The utility model discloses a special water drum type explosive of water pressure blasting, including outer body, leading water bag, emulsion explosive, water bag, detonating primer, detonating cord, the jam body, leading water bag is arranged in the internal bottom of outer tube, the water bag cladding in outside the emulsion explosive, the water bag is located the outer tube is internal, the water bag is close to the recess is reserved to the one end of leading water bag, detonating primer set up in the emulsion explosive is located in the one end of recess, detonating primer passes through detonating primer index is in outside the outer tube, the port department of outer body passes through the jam seals. The coupling explosive loading mode of the water-in-water type explosive special for hydraulic blasting can meet the requirement of stable explosive transfer, avoid the use of an explosive fuse, reduce the blasting construction cost to a great extent, reduce the management range of field blasting equipment, and simultaneously solve a plurality of problems of accurate smooth blasting and presplitting blasting technologies in actual engineering.
Description
Technical Field
The utility model relates to a blasting engineering technical field especially relates to a special water drum type explosive of water pressure blasting.
Background
The blasting engineering is a technology which utilizes the huge energy instantaneously released by the explosion of the explosive to destroy or deform the medium around the explosive, thereby achieving a certain engineering purpose. In mining, drilling blastholes in ore or rock is known as rock drilling, loading blastholes with explosives, and breaking down the ore or rock from their matrix is known as blasting. The mine blasting engineering is a technology for breaking rocks and ores by using explosive explosion.
In the field of blasting engineering, blasting construction is completed by a series of procedures of hole distribution, drilling, hole measurement, charging, measurement, filling, network connection, warning, detonation and the like according to design. The types of explosive loaded are powder explosive, emulsion explosive, colloidal explosive and the like, and the powder explosive are the most widely used types at present compared with other types.
Smooth blasting is an important link of blasting construction, plays a great role, and is particularly important in road construction and water conservancy construction.
The good smooth blasting effect can greatly reduce the using amount of concrete, and the control of the over-short excavation in the tunneling blasting is always the subject of continuous improvement and research of large enterprises such as medium-iron enterprises, medium-building enterprises, medium-tunnel enterprises and the like. In actual engineering, as long as tunnel excavation blasting construction is available, various requirements and various research conferences of over-excavation and under-excavation control are necessarily met, because one blasting is common in excess of several to dozens of cubic meters, the excess needs to be filled with concrete, the price of the concrete can reach several hundred yuan, and compared with the original rock, the filling density and the stability of the concrete filling are greatly different. It is difficult to solve these problems fundamentally.
Although many existing technologies and products aim to improve the problem of over-short excavation of blasting construction, the effect and the practicability are not ideal because the theory and the practice of smooth blasting are mature, but tunnel tunneling blasting belongs to horizontal hole charging and is different from vertical hole blasting and other small blasting projects, the vertical hole smooth blasting can use cheap ropes, bamboo chips and the like to complete small-distance and equidistant sectional charging in holes, and the horizontal hole blasting needs to use bamboo chips and the like with hard texture and better toughness to realize smooth blasting.
In tunnel excavation blasting, a conventional highway tunnel is generally 10m by 12m, more than 90 peripheral holes (light blasting holes) can be drilled in one round of full-section blasting, the hole depth is 5m mostly, and the length of one-time blasting excavation is about 3 m. The smooth blasting using bamboo chips requires 90 × 5 to 450m bamboo chips, and the tunnel length of 1km requires 334 × 450 to 150300m bamboo chips, and this is the amount used for only one tunnel.
Disclosure of Invention
The utility model aims at providing a special water drum type explosive of water pressure blasting. According to a large amount of field practical data and network literature references, the hydraulic blasting technology is relatively mature. Compared with the conventional blasting, the hydraulic blasting can greatly improve a plurality of defects of the conventional blasting, and has great development significance in various blasting constructions involved later. The coupled charging mode of the (smooth surface/presplitting) water drum type explosive special for hydraulic blasting can meet the requirement of stable explosion transfer, avoid the use of a detonating cord, reduce the blasting construction cost to a great extent, reduce the field blasting equipment management range, and simultaneously solve a plurality of problems of accurate smooth surface blasting and presplitting blasting technologies in practical engineering.
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
the utility model discloses an outer body, leading water bag, emulsion explosive, water bag, explosion-initiating detonator, explosion-initiating cable, the jam body, leading water bag is arranged in the internal bottom of outer tube, the water bag cladding in outside the emulsion explosive, the water bag is located in the outer tube is internal, the water bag is close to the recess is reserved to the one end of leading water bag, the explosion-initiating detonator set up in emulsion explosive is located in the one end of recess, the explosion-initiating detonator passes through the explosion-initiating index is in outside the outer tube, the port department of the outer body passes through the jam seals.
Further, the water bags are cylindrical, the water bags are sleeved outside the emulsion explosive in sections, and the water bags are located in the outer tube body.
Preferably, the diameter of the emulsion explosive is 16mm, the length of the emulsion explosive is 400mm, the inner diameter of the outer tube body is 35mm, and the water bag is filled between the emulsion explosive and the outer tube body. The inner diameter of the water bag is 16mm, the thickness of the water layer is 19mm, and the outer diameter of the water bag is 35 mm.
The special water-in-water type explosive for hydraulic blasting is characterized in that a small-diameter emulsion explosive is wrapped in an external hollow cylindrical water bag, a contact part is fixedly bonded, one end of the small-diameter emulsion explosive protrudes out of the hollow cylindrical water bag, and the other end of the small-diameter emulsion explosive is recessed. When in use, the (smooth surface/presplitting) water-drum type explosive special for hydraulic blasting is inserted and connected through the bulges and the recesses at the head and the tail and is loaded into a blast hole, thereby achieving the technical requirements of coupled charging and hydraulic blasting. The coupled charging mode of the (smooth surface/presplitting) water drum type explosive special for hydraulic blasting can avoid the use of a detonating tube under the condition of meeting the requirement of stable explosion propagation, thereby greatly reducing the blasting construction cost, reducing the field blasting equipment management range and simultaneously solving a plurality of problems of accurate smooth surface blasting and presplitting blasting technologies in practical engineering.
The utility model has the advantages that:
the utility model relates to a special water drum type explosive of water pressure blasting, compared with the prior art, the utility model discloses the advantage lies in:
firstly, the blasting dust is inhibited and harmful gas is absorbed after blasting, the blasting dust is always difficult to overcome in tunnel driving blasting, roadway blasting, foundation pit blasting and complex environment blasting, particularly demolition blasting, and the water pressure blasting can effectively inhibit the blasting dust by utilizing a water bag and explosive charging structure in a blast hole; according to the existing explosive production process, the emulsion explosive can meet the environmental protection requirement after explosion, namely only a small amount of harmful gas is generated, but the explosive per se needs to reach or approach zero oxygen balance to reach the condition. In real field practice, explosives which can strictly reach zero oxygen balance are rare, after blasting is finished, harmful gases such as carbon monoxide and nitrogen oxides can be generated and diffused along with blasting dust, and water vapor generated by a water bag subjected to hydraulic blasting after blasting can be diffused to fuse, wrap and inhibit the harmful gas particles and the rock blasting dust to a great extent, so that the spreading of the harmful gases is greatly reduced.
The hydraulic blasting can utilize the incompressibility of water, and further fracture and fracture rock mass in the rock stratum broken by the compression wedging of air under the action of blasted detonation and the actions of detonation wave, stress wave, reverse tensile wave and the like in the conventional blasting are improved, so that the water wedge action is achieved;
the blasting process can generate various action waves when being carried out, the waves are the mechanism of breaking rocks, the propagation medium and the propagation capacity of the waves can be classified into solid and liquid, the propagation speed and the propagation capacity of the waves in the gas are the weakest, the hydraulic blasting can enable the waves to be propagated in vapor and water wedges which are generated by instantly breaking water bags and vaporized, the propagation speed and the propagation capacity of stress waves and stretching waves of the waves are greatly improved, the blasting effect is greatly improved, and the most important point is that the effect of greatly improving the blasting effect without increasing the dosage can be achieved.
And fourthly, in the practice of a large number of hydraulic blasting sites, the loading amount of the hydraulic blasting is lower than that of the conventional blasting, but the hydraulic blasting has a better effect than that of the conventional blasting, so that the reasonable loading structure of the hydraulic blasting can enable the water bag to replace part of the loading amount of the conventional blasting, and the loading cost is reduced.
Drawings
Fig. 1 is a schematic sectional structure of the present invention;
FIG. 2 is a schematic view of the water bag of the present invention;
fig. 3 is a schematic structural view of the groove formed by the water bag and the emulsion explosive of the present invention.
In the figure: 1-outer tube, 2-front water bag, 3-emulsion explosive, 4-water bag, 5-groove, 6-detonating detonator, 7-detonating cord and 8-blocking body.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, illustrative embodiments and description of which are provided herein to explain the invention, but not as a limitation thereof.
As shown in fig. 1-3: the utility model discloses an outer body 1, leading water bag 2, emulsion explosive 3, water bag 4, detonating primer 6, detonating cord 7, the blocking body 8, leading water bag 2 is arranged in bottom in the outer body 1, water bag 4 cladding in outside emulsion explosive 3, water bag 4 is located in the outer body 1, water bag 4 is close to the recess 5 is reserved to the one end of leading water bag 2, detonating primer 6 set up in emulsion explosive 3 is located in the one end of recess 5, detonating primer 6 passes through detonating cord 7 draw out in outside the outer body 1, the port department of outer body 1 passes through the 8 seals of blocking body.
The principle is that a certain amount of water is injected into a certain position in a blast hole, special stemming is used as a blocking body 8 to backfill the blocked blast hole, the incompressibility of shock waves propagated in water to the water is utilized, so that the explosion energy is almost not lost when the water is transmitted to surrounding rocks, meanwhile, the water wedge effect generated by the water under the expansion effect of explosion gas is beneficial to rock breaking, the water in the blast hole can play a role in atomizing and reducing dust, and the pollution of dust to the environment is greatly reduced.
Further, the water bags are cylindrical, the water bags are sleeved outside the emulsion explosive in sections, and the water bags are located in the outer tube body.
Preferably, the diameter of the emulsion explosive is 16mm, the length of the emulsion explosive is 400mm, the inner diameter of the outer tube body is 35mm, and the water bag is filled between the emulsion explosive and the outer tube body. The inner diameter of the water bag is 16mm, the thickness of the water layer is 19mm, and the outer diameter of the water bag is 35 mm.
According toThe appearance size and the dosage of the phi 32mm emulsion explosive used in the conventional phi 40mm aperture smooth blasting/presplitting blasting are that the outer diameter of one section of the phi 32mm emulsion explosive is 3.2cm, the length is 20cm, and the dosage is 160.768cm3。
The critical diameter of detonation/detonation propagation of the industrial emulsion explosive is 12mm, the outer diameter of a No. 8 detonator is 6.9mm, the outer diameter of a special water-in-water type explosive for (smooth surface/presplitting) hydraulic blasting is 16mm, the initiation, detonation/detonation performance of the explosive can be met, the outer skin of the special water-in-water type explosive adopts the original emulsion explosive skin packaging process, and the length of 80cm of the small-diameter emulsion explosive with phi 16mm can be filled with one section of emulsion explosive with phi 32mm according to calculation, namely under the condition of the same explosive quantity, the explosive length of one section of water-in-water type explosive can reach 4 times of that of the emulsion explosive with phi 32 mm. The charging length can completely meet the technical requirement of coupled charging in the smooth surface/presplitting blast hole.
In order to facilitate use and popularization, the length of the small-diameter emulsion explosive in the special water-in-water type explosive for (smooth surface/presplitting) hydraulic blasting is 40cm, so that the technical requirements of various engineering charging technologies are met.
The final size of the small-diameter emulsion explosive is phi 16mm in outer diameter and 40cm in length; the production process is used for batch production by adjusting the production process of the emulsion explosive with the diameter of phi 32 mm.
In order to meet the construction requirements of high flexibility and high quality of product external packages in various projects, the external water bag of the special water-in-water type explosive for (smooth surface/presplitting) hydraulic blasting is made of a material consistent with the emulsified explosive with the diameter of 32mm, and the wall thickness dimension of the special water-in-water type explosive is also kept consistent.
The outer water bag is a plastic annular structure with two closed ends, the manufacturing process is simple, only one end of each of two annular plastic envelopes with the diameter of 25mm and the length of 42cm is sealed, and after water is injected, the other end of each annular plastic envelope is also sealed to form a hollow cylinder with the inner diameter of 16mm, the water layer thickness of 19mm, the outer diameter of 35mm and the length of 40 cm.
And (3) inserting the small-diameter emulsion explosive into an outer water bag, reserving 5cm outside one end, and adhering and fixing the contact parts together to finish the manufacturing of the (smooth surface/pre-splitting) water-in-water type explosive special for hydraulic blasting.
The using method comprises the following steps:
when carrying out smooth surface/presplitting hydraulic blasting, a water-saving bag is filled at the bottom of the hole, then the special water-drum type explosive for (smooth surface/presplitting) hydraulic blasting is inserted into the hole, and a detonator is inserted into the designed position to finish the charging operation.
The development of hydraulic blasting technology has been widely popularized in tunnel excavation blasting construction, and particularly in standardized tunnel excavation blasting construction, the application of hydraulic blasting technology is gradually formed. Firstly, the special water-in-water type explosive outer package for hydraulic blasting not only has the same flexibility and extensibility as the emulsion explosive outer package, but also cannot be damaged even if the water-in-water type explosive is carelessly dropped on the ground or certain pressure is applied in the explosive charging process; secondly, the use of the water-in-water type explosive can directly avoid the use of a detonating cord, and can greatly reduce the blasting construction cost and the construction difficulty of smooth surface/presplitting blasting for constructors; the technical mode of combining a small-diameter explosive coupled charging mode and hydraulic blasting can be realized by using the (smooth surface/presplitting) water-drum type explosive special for hydraulic blasting, air spaced charging and water bag spaced charging are replaced, and the blasting effect is improved to the maximum extent; and fourthly, inserting the protruding small-diameter emulsion explosive into the concave part at the tail part of the water-in-water type explosive to ensure the quality of coupled explosive loading and avoid the occurrence of misfire and blind blasting caused by the fact that the explosives are not in close contact with each other.
The hydraulic blasting technology can be really played only when the charging requirement of the hydraulic blasting design is met, the development of the hydraulic blasting technology in the blasting construction industry is promoted, the development of the national blasting industry is guaranteed, the contribution is made to the environmental management engineering of China, and the growth of the national construction industry is effectively promoted.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (5)
1. The special water-in-water type explosive for hydraulic blasting is characterized in that: the explosive-proof pipe comprises an outer pipe body, a front water bag, an emulsion explosive, a water bag, a detonating primer, a detonating cord and a plugging body, wherein the front water bag is arranged at the bottom inside the outer pipe body, the water bag is coated outside the emulsion explosive, the water bag is positioned inside the outer pipe body, a groove is reserved at one end, close to the front water bag, of the water bag, the detonating primer is arranged in one end, located in the groove, of the emulsion explosive, the detonating primer is arranged outside the outer pipe body through the detonating index, and the port of the outer pipe body is sealed through the plugging body.
2. The water-in-water type explosive special for hydraulic blasting according to claim 1, wherein: the water bags are cylindrical, the emulsion explosive is sleeved with the water bags in sections, and the water bags are all located in the outer tube body.
3. The water-in-water type explosive special for hydraulic blasting according to claim 1, wherein: the diameter of the emulsion explosive is 16mm, and the length of the emulsion explosive is 400 mm.
4. The water-in-water type explosive special for hydraulic blasting according to claim 1, wherein: the inner diameter of the outer tube body is 35mm, and the water bag is filled between the emulsion explosive and the outer tube body.
5. The special water-in-water type explosive for hydraulic blasting according to claim 4, wherein: the inner diameter of the water bag is 16mm, the thickness of the water layer is 19mm, and the outer diameter of the water bag is 35 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021980082.8U CN213021263U (en) | 2020-09-11 | 2020-09-11 | Water-in-water type explosive special for hydraulic blasting |
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| CN202021980082.8U CN213021263U (en) | 2020-09-11 | 2020-09-11 | Water-in-water type explosive special for hydraulic blasting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235469A (en) * | 2021-05-24 | 2021-08-10 | 中铁建大桥工程局集团第五工程有限公司 | Sectional blasting demolition method for large bridge |
| CN117308721A (en) * | 2023-11-28 | 2023-12-29 | 福建省新华都工程有限责任公司 | Special equipment with function of charging in sections of blast holes and backfilling rock powder in stages |
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2020
- 2020-09-11 CN CN202021980082.8U patent/CN213021263U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235469A (en) * | 2021-05-24 | 2021-08-10 | 中铁建大桥工程局集团第五工程有限公司 | Sectional blasting demolition method for large bridge |
| CN117308721A (en) * | 2023-11-28 | 2023-12-29 | 福建省新华都工程有限责任公司 | Special equipment with function of charging in sections of blast holes and backfilling rock powder in stages |
| CN117308721B (en) * | 2023-11-28 | 2024-03-15 | 福建省新华都工程有限责任公司 | Special equipment with function of charging in sections of blast holes and backfilling rock powder in stages |
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