CN209763895U - Blasting cutting device of compound loaded constitution - Google Patents
Blasting cutting device of compound loaded constitution Download PDFInfo
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- CN209763895U CN209763895U CN201920316641.6U CN201920316641U CN209763895U CN 209763895 U CN209763895 U CN 209763895U CN 201920316641 U CN201920316641 U CN 201920316641U CN 209763895 U CN209763895 U CN 209763895U
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Abstract
The utility model discloses a compound charge structure's blasting cutting device comprises gathering blasting cartridge, afterbody connector, explosive fuse and reverse initiating explosive roll, gathers the blasting cartridge including the explosive groove of taking tubaeform recess and detaining the powder capping outward, intraductal explosive and the installation explosive fuse of loading, and the afterbody is connected with reverse initiating explosive roll accessible afterbody connector, forms blasting cutting device from this. The horn-shaped groove on the energy-gathered blasting tube can generate higher jet speed than the conical groove charging structure when the charging amount is fixed, and the cutting capability to the rock mass is stronger. The energy-accumulating blasting tube is divided into a common type and an enhanced type, a groove of the common type energy-accumulating blasting tube is an opening, a groove opening of the enhanced type energy-accumulating blasting tube is sealed, an energy-accumulating cavity is formed in the groove, on one hand, the rigidity of the structure can be enhanced, on the other hand, after water is injected into the energy-accumulating cavity, high-pressure jet water is generated during blasting to form a water jet cutter, the cutting capability of a rock body can be enhanced, and the generated water mist can also play a role in dust fall.
Description
Technical Field
the utility model relates to a rock tunnel or rock slope smooth surface blasting loaded constitution's application field, specifically compound loaded constitution's blasting cutting device is called to a concrete.
Background
smooth blasting is a controlled blasting technology which achieves the smooth rule of blasting blank surfaces and the contour line meets the design requirements by correctly selecting blasting parameters, a charging structure, an initiation network and a reasonable construction method. The basic principle of smooth blasting is to control the blasting action of the explosive, convert the high-intensity work form into the explosive work form more, and reduce the initial impulse of explosive blasting, thereby reducing the damage to the rock mass of the wall of the blasthole and controlling the blasting crack to develop along the expected direction.
The energy-accumulating smooth blasting is a blasting technology which utilizes a door-lock effect (also called energy-accumulating effect) to detonate a charge structure with a groove, and then an explosive product flow (also called jet flow) which is converged and has high speed and high pressure can appear on the axis of the groove, so that chemical energy released by explosive explosion is concentrated in a certain range, and the rock mass is directionally cut.
when a rock tunnel or a rock slope is excavated, smooth blasting is adopted, so that blasting disturbance of tunnel surrounding rocks and a slope body of the slope is reduced, and the structure is stable. At present, the common smooth blasting charge structure mainly comprises a spaced charge structure with the help of a booster wire and a charge structure with a groove, and compared with the former, the latter has the advantages of larger distance (peripheral holes) of smooth blasting holes, more uniform distribution of explosives in the holes, better booster and rock directional cutting blasting effect and the like. In the charging structure with the groove, the charging structure with the conical groove is mainly adopted at present, and when the charging amount is fixed, the jet velocity generated by the charging structure with the horn-shaped groove is much lower, so that a space is still reserved in the aspect of improving the smooth blasting energy efficiency.
SUMMERY OF THE UTILITY MODEL
therefore, in order to solve the above-mentioned deficiencies, the present invention provides a blasting cutting device with a composite charging structure; the explosive charging structure is improved to improve the energy gathering effect, so that the capability of cutting a rock body is improved. The utility model is suitable for a smooth blasting of tunnel and side slope excavation in various soft, hard rock stratum also can be applied to rock presplitting blasting.
the utility model discloses a realize like this, construct a compound charge structure's blasting cutting device, its characterized in that: the energy-gathering blasting tube comprises an explosive groove with a horn-shaped groove and an outer buckle explosive groove cover, explosives are filled in the tube and the detonating cord is installed in the tube, the tail of the tube is connected with the reverse detonating cartridge through the tail connector, and accordingly a blasting cutting device is formed, and the blasting cutting device is fixed in a blasting hole through a positioning block.
according to the utility model relates to a compound charge structure's blasting cutting device, its characterized in that: the energy-accumulating blasting pipe is made of PVC materials, and the energy-accumulating blasting pipe for the gas stratum is made of the PVC materials which are antistatic and do not generate static electricity.
According to the utility model relates to a compound charge structure's blasting cutting device, its characterized in that: the tail half section of the horn-shaped groove on the energy-gathered blasting tube is in a small conical angle shape, and the rear half section of the horn-shaped groove is in an arc-shaped opening.
According to the utility model relates to a compound charge structure's blasting cutting device, its characterized in that: the recess notch of strenghthened type energy-gathered blasting pipe seals, forms in the recess and gathers the energy chamber, can strengthen the rigidity of structure on the one hand, and on the other hand toward gathering after the intracavity injected water, will produce high pressure during the blasting and penetrate flowing water and form the water sword, can strengthen the cutting ability to the rock mass, and the water smoke of production also can play the effect of dust fall.
according to the utility model relates to a compound charge structure's blasting cutting device, its characterized in that: the tail connector of the energy-accumulating blasting tube is made of the same material as the energy-accumulating blasting tube, the tail connector is in a half-wrapping shape for the energy-accumulating blasting tube and the reverse initiating explosive, and the energy-accumulating blasting tube and the reverse initiating explosive are bound by an adhesive tape to form a whole.
According to the utility model relates to a compound charge structure's blasting cutting device, its characterized in that: the positioning block (13) is made of foam materials such as EPS and the like, and can control and enable the energy-gathered blasting tube to be in the correct position in the blasting hole.
the construction method of the blasting cutting device with the composite charging structure comprises the following steps:
(1) The blasting cutting device for preparing the composite charging structure according to the structure comprises the following steps:
1) The outer buckle medicine groove cover of the energy-gathering blasting tube is disassembled to enable the medicine groove opening to keep the upward direction;
2) Cutting off the explosive cartridge package, and filling the explosive into a explosive groove according to the designed dosage;
3) embedding the detonating cord into the explosive, then installing and fastening an external fastening explosive groove cover, wherein the detonating cord extends out of the tail end of the energy collecting tube by about 100-150 mm;
4) manufacturing a reverse initiation cartridge, wherein the reverse initiation cartridge consists of an explosive cartridge, a detonator and an initiation line, the detonator is arranged at the bottom of the cartridge, and the initiation line is used for connecting the detonator and an external initiation network of a blast hole;
5) Cutting the top of the reverse initiation explosive cartridge, tightly connecting the reverse initiation explosive cartridge with the tail end of the energy-gathered blasting tube, and inserting an detonating cord into the reverse initiation explosive cartridge in the connecting process;
6) Mounting a tail connector, and binding the tail connector with the energy-gathering blasting tube and the reverse initiating explosive cartridge by using an adhesive tape to form a whole;
7) The positioning blocks are arranged on the energy-gathering blasting tube, and the distance between the positioning blocks is 1.3-1.6 m;
8) Checking whether an outer buckling explosive groove cover of the energy-accumulating blasting tube is fastened with the explosive groove or not, and fixing adhesive tapes for the energy-accumulating blasting tube at intervals of 0.5-1.0 m when needed;
(2) before drilling a rock tunnel or a rock slope, firstly measuring and lofting to form an excavation contour line, and then marking the positions of all blast holes;
(3) drilling by using a drilling machine, controlling the drilling direction during drilling, and cleaning the hole by using high-pressure air after drilling;
(4) after the smooth blasting hole is formed, the blasting cutting device is sent into the smooth blasting hole in the tail part entering direction, and the center of a groove of the energy-gathered blasting tube is aligned to an excavation contour line during charging;
(5) After charging, stemming is used for blocking the orifice;
(6) after drilling, cleaning and charging of all blast holes are completed, the blast hole blasting system is connected with a blasting network, blasting is carried out according to the sequence of the cut hole → the auxiliary hole → the peripheral hole during tunnel excavation, and blasting is carried out according to the sequence of the auxiliary hole → the smooth blast hole during slope excavation.
A when compound charge structure's blasting cutting device was under construction, when adopting the strenghthened type to gather the blasting cutting device of compound charge structure of blasting tube preparation, earlier will gather after filling water and will gather material shutoff such as clay in chamber both ends to the intracavity water injection that gathers in the blasting tube.
The utility model has the advantages of as follows: the utility model provides a compound charge structure's blasting cutting device and construction method here, the device is by gathering can the blasting tube, the afterbody connector, the explosive, explosive fuse and reverse initiating explosive cartridge are constituteed, gather can the blasting tube including the explosive groove of taking tubaeform recess and detain the explosive capping outward, intraductal explosive and the installation explosive fuse of filling, the pipe afterbody is connected with reverse initiating explosive cartridge accessible afterbody connector, form blasting cutting device from this, blasting cutting device is fixed at the downthehole locating piece that uses of blast. The horn-shaped groove on the energy-gathered blasting tube is provided with a small conical angle at the tail half section, and is arc-shaped at the rear half section, so that the charging structure of the horn-shaped groove can generate higher jet velocity than the charging structure of the conical angle-shaped groove at fixed charging amount, and the cutting capability of the rock body is stronger.
The energy-accumulating blasting tube is divided into a common type and an enhanced type, a groove of the common type energy-accumulating blasting tube is an opening, a groove opening of the enhanced type energy-accumulating blasting tube is sealed, an energy-accumulating cavity is formed in the groove, on one hand, the rigidity of the structure can be enhanced, on the other hand, after water is injected into the energy-accumulating cavity, high-pressure jet water is generated during blasting to form a water jet cutter, the cutting capability of a rock body can be enhanced, and the generated water mist can also play a role in dust fall.
The reverse initiation explosive cartridge can enhance the action of explosive stress waves due to the initiation from the bottom of the blast hole, and is beneficial to rock breaking.
The utility model discloses there is following good effect after the device is implemented: compared with the conventional smooth blasting of a spaced charging structure, after the blasting cutting device of the composite charging structure and the construction method are adopted, the distance between smooth blasting holes can be increased by 1 time, and the drilling workload can be reduced; the directional blasting cutting effect is better, and to soft, hard rock stratum of different grade type, can effective control super owing to adjust the charge volume properly, especially to the soft rock stratum effect that the joint crack develops better for the excavation profile line is smooth and neat, and the half eye mark retentivity in plain noodles blast hole improves, reduces the disturbance of excavation to country rock and side slope body, has also reduced follow-up clearance and the filling to tunnel country rock or rock side slope. The method is beneficial to increasing the work efficiency, reducing the cost and reducing the construction safety risk.
Drawings
FIG. 1 is a schematic structural view of a section of a blasting cutting device with a composite charging structure (a common type energy-gathered blasting tube);
FIG. 2 is a cross-sectional structural diagram of a common type energy-accumulating blasting tube;
FIG. 3 is a cross-sectional view of a cover of a conventional energy-gathering blasting tube;
FIG. 4 is a cross-sectional structure diagram of a conventional energy-gathered blasting tube charge tank;
FIG. 5 is a schematic structural view of a section of an enhanced energy-gathered blasting tube;
FIG. 6 is a schematic structural view of a cross section of a reinforced energy-gathered blasting tube external medicine-buckling groove cover;
FIG. 7 is a schematic structural view of a cross section of a charge tank of the reinforced energy-gathered blasting tube;
FIG. 8 is a schematic structural view of a section of a blasting cutting device with a composite charging structure (reinforced energy-gathered blasting tube);
FIG. 9 is a schematic cross-sectional view of a foam positioning block for a conventional shaped charge blast pipe;
FIG. 10 is a schematic cross-sectional view of a foam locator for an enhanced shaped charge blast tube;
FIG. 11 is a schematic view of a tail connector for a conventional shaped charge;
FIG. 12 is a sectional view taken along line I-I of FIG. 11;
FIG. 13 is a sectional view taken along line II-II of FIG. 11;
FIG. 14 is a sectional view taken along line III-III in FIG. 11;
FIG. 15 is a cross-sectional view of the section IV-IV in FIG. 11;
fig. 16 is a schematic view of the tail connector for a reinforced shaped charge;
FIG. 17 is a cross-sectional view of V-V in FIG. 16;
FIG. 18 is a cross-sectional view VI-VI taken in FIG. 16;
FIG. 19 is a cross-sectional view of VII-VII in FIG. 16;
FIG. 20 is a sectional view taken along line VIII-VIII in FIG. 16;
FIG. 21 is a schematic diagram of the charge of the blast cutting apparatus in a smooth bore blast;
FIG. 22 is a face-up view of a blast hole for slope excavation;
FIG. 23 is a cross-sectional view IX-IX of FIG. 22;
FIG. 24 is a layout view of blast holes dug in the upper steps of the tunnel;
FIG. 25 is a perspective view A1 of FIGS. 23 and 24, illustrating the installation of a conventional shaped charge blasting cartridge in a recess in a smooth blasthole;
fig. 26 is a perspective view a2 of fig. 23 and 24, illustrating the corresponding location of the installation of a burst cutting assembly in a blind hole using an enhanced shaped charge.
wherein: the explosive comprises explosive 1, a detonating cord 2, a horn-shaped groove 3, an explosive groove 4, an outer buckling explosive groove cover 5, an energy-gathering cavity 6, water 7, an explosion cutting device 8 with a composite charging structure, stemming 9, a blasting hole 10, a detonator 11, a reverse initiating explosive roll 12, a foam positioning block 13, a positioning block 13A of a common energy-gathering blasting tube, a positioning block 13B of a reinforced energy-gathering blasting tube, a tail connector 14A of the common energy-gathering blasting tube, a tail connector 14B of the reinforced energy-gathering blasting tube and a detonating cord 15.
Detailed Description
the present invention will be described in detail with reference to fig. 1 to 26, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
the utility model discloses an improve the blasting cutting device and the construction method that provide a compound charge structure here, the charge structure through improving the explosive improves and gathers the energy effect to improve the ability of cutting the rock mass. The utility model is suitable for a smooth blasting of tunnel and side slope excavation in various soft, hard rock stratum also can be applied to rock presplitting blasting. The blasting cutting device of the composite charging structure of the utility model comprises two implementation modes of a common type and a reinforced type;
Fig. 1 and 21 show a conventional structure, which comprises an energy-collecting blasting tube, a tail connector 14, an explosive 1, a detonating cord 2 and a reverse initiating explosive cartridge 12, wherein the energy-collecting blasting tube comprises an explosive groove 4 with a trumpet-shaped groove 3 and an outer buckling explosive groove cover 5, the explosive 1 is filled in the tube and the detonating cord 2 is installed, the tail of the tube is connected with the reverse initiating explosive cartridge 12 through the tail connector 14, so that a blasting cutting device is formed, and the blasting cutting device is fixed in a blasting hole through a positioning block 13.
the energy-accumulating blasting pipe is made of PVC materials, and the energy-accumulating blasting pipe for the gas stratum is made of the PVC materials which are antistatic and do not generate static electricity. Wherein, the tail half section of the horn-shaped groove 3 on the energy-gathered blasting tube is in a small taper shape, and the rear half section is in a circular arc shape.
the tail connector 14 of the energy-gathered blasting tube is made of the same material as the energy-gathered blasting tube, the tail connector 14 is in a half-wrapping shape for the energy-gathered blasting tube and the reverse initiating explosive, and the energy-gathered blasting tube, the reverse initiating explosive roll 12 and the tail connector are bound by an adhesive tape to form a whole.
The positioning block 13 is made of foam materials such as EPS and the like, and can control and enable the energy-gathered blasting tube to be in a correct position in the blasting hole.
In this patent, gather can the blasting tube and divide into general type and strenghthened type, the recess 3 of general type energy-gathered blasting tube is the opening, 3 notches of recess of strenghthened type energy-gathered blasting tube are sealed, form in recess 3 and gather ability chamber 6, can strengthen the rigidity of structure on the one hand, on the other hand, toward gather after injecting water 7 in the chamber 6, will produce the high pressure during the blasting and press the flowing water formation water sword, can strengthen the cutting ability to the rock mass, the effect of dust fall also can be played to the water smoke that produces.
The construction method of the blasting cutting device with the composite charging structure comprises the following steps:
(1) The blasting cutting device for preparing the composite charging structure adopts the following steps when the common energy-gathered blasting tube is prepared:
1) The outer buckle medicine groove cover of the energy-gathering blasting tube is disassembled to enable the medicine groove opening to keep the upward direction;
2) Cutting off the explosive cartridge package, and filling the explosive into a explosive groove according to the designed dosage;
3) Embedding the detonating cord into the explosive, then installing and fastening an external fastening explosive groove cover, wherein the detonating cord extends out of the tail end of the energy collecting tube by about 100-150 mm;
4) manufacturing a reverse initiation cartridge, wherein the reverse initiation cartridge consists of an explosive cartridge, a detonator and an initiation line, the detonator is arranged at the bottom of the cartridge, and the initiation line is used for connecting the detonator and an external initiation network of a blast hole;
5) Cutting the top of the reverse initiation explosive cartridge, tightly connecting the reverse initiation explosive cartridge with the tail end of the energy-gathered blasting tube, and inserting an detonating cord into the reverse initiation explosive cartridge in the connecting process;
6) Mounting a tail connector, and binding the tail connector with the energy-gathering blasting tube and the reverse initiating explosive cartridge by using an adhesive tape to form a whole;
7) The positioning blocks are arranged on the energy-gathering blasting tube, and the distance between the positioning blocks is 1.3-1.6 m;
8) and checking whether the outer buckling explosive groove cover of the energy-accumulating blasting tube is buckled with the explosive groove or not, and fixing the adhesive tapes for the energy-accumulating blasting tube at intervals of 0.5-1.0 m when required.
When the reinforced energy-accumulating blasting tube is prepared, before the steps, water is injected into the energy-accumulating cavity in the blasting tube, and after the water is filled, the two ends of the energy-accumulating cavity are plugged by materials such as cement gum and the like.
(2) Before drilling a rock tunnel or a rock slope, firstly measuring and lofting to form an excavation contour line, and then marking the positions of all blast holes.
(3) and drilling by using a drilling machine, well controlling the drilling direction during drilling, and cleaning the hole by using high-pressure air after drilling.
(4) After the smooth blasting hole is formed, the tail part of the blasting cutting device is sent into the smooth blasting hole in the tail part entering direction, and the center of the groove of the energy-accumulating blasting tube is aligned to the excavation contour line during charging.
(5) and (5) after charging, using stemming to plug the hole opening.
(6) after drilling, cleaning and charging of all blast holes are completed, the blast hole blasting system is connected with a blasting network, blasting is carried out according to the sequence of the cut hole → the auxiliary hole → the peripheral hole during tunnel excavation, and blasting is carried out according to the sequence of the auxiliary hole → the smooth blast hole during slope excavation.
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a compound charge structure's blasting cutting device which characterized in that: by gathering can the blast tube, afterbody connector (14), explosive (1), detonating cord (2) and reverse initiating explosive cartridge (12) are constituteed, gather can the blast tube including explosive groove (4) and the outer knot powder groove cover (5) of taking tubaeform recess (3), intraductal explosive (1) of filling and installation detonating cord (2), the pipe tail is connected with reverse initiating explosive cartridge (12) accessible afterbody connector (14), form the blasting cutting device from this, the blasting cutting device is fixed with locating piece (13) in the blast hole.
2. A blasting cutting device of a composite charge structure as claimed in claim 1, wherein: wherein the energy-gathered blasting tube is made of PVC material.
3. a blasting cutting device of a composite charge structure as claimed in claim 1, wherein: wherein the tail half section of the horn-shaped groove (3) on the energy-gathered blasting tube is in a small taper shape, and the rear half section is an opening in a circular arc shape.
4. A blasting cutting device of a composite charge structure as claimed in claim 1, wherein: wherein the groove notch of the reinforced energy-accumulating blasting tube is closed, an energy-accumulating cavity (6) is formed in the groove, and water (7) is injected into the energy-accumulating cavity.
5. A blasting cutting device of a composite charge structure as claimed in claim 1, wherein: the tail connector (14) of the energy-gathered blasting tube is made of the same material as the energy-gathered blasting tube, and the tail connector (14) is in a half-wrapping shape for both the energy-gathered blasting tube and the reverse detonating explosive.
6. A blasting cutting device of a composite charge structure as claimed in claim 1, wherein: the positioning block (13) is made of EPS foam materials, and can control and enable the energy-gathered blasting tube to be in the correct position in the blasting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920316641.6U CN209763895U (en) | 2019-03-13 | 2019-03-13 | Blasting cutting device of compound loaded constitution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920316641.6U CN209763895U (en) | 2019-03-13 | 2019-03-13 | Blasting cutting device of compound loaded constitution |
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| CN209763895U true CN209763895U (en) | 2019-12-10 |
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| CN201920316641.6U Active CN209763895U (en) | 2019-03-13 | 2019-03-13 | Blasting cutting device of compound loaded constitution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708546A (en) * | 2019-03-13 | 2019-05-03 | 四川路航建设工程有限责任公司 | A kind of the Cut blasting device and construction method of compound charge constitution |
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2019
- 2019-03-13 CN CN201920316641.6U patent/CN209763895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708546A (en) * | 2019-03-13 | 2019-05-03 | 四川路航建设工程有限责任公司 | A kind of the Cut blasting device and construction method of compound charge constitution |
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