CN112161536A - Blasting device for limestone mine and blasting method thereof - Google Patents
Blasting device for limestone mine and blasting method thereof Download PDFInfo
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- CN112161536A CN112161536A CN202011023565.3A CN202011023565A CN112161536A CN 112161536 A CN112161536 A CN 112161536A CN 202011023565 A CN202011023565 A CN 202011023565A CN 112161536 A CN112161536 A CN 112161536A
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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
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The invention discloses a blasting device for a limestone mine, which comprises an exploder, a cartridge assembly, explosives, the exploder, an detonating cord and a time delay device, wherein the cartridge assembly comprises a plurality of explosion units and a tube sealing separation assembly arranged between two adjacent explosion units, each explosion unit comprises an explosion tube and an expansion tube, a group of explosives and the time delay device are arranged in each explosion tube, solid agents are filled in the expansion tubes, the tube sealing separation assembly is arranged on the expansion tubes and comprises a tube sealing valve and a fusible connecting piece, the fusible connecting pieces enable the tube sealing valves to be in a normally open state at normal temperature, when the fusible connecting pieces are heated and then fused, the tube sealing valves seal the inner tube openings of the expansion tubes, and the fused fusible connecting pieces are fused with the solid agents to enable the expansion tubes to expand and block explosion holes, and the blasting method comprises the following steps: the invention can improve the assembly efficiency of the blasting device and quickly realize the filling of the blast hole.
Description
Technical Field
The invention relates to the technical field of ore blasting devices, in particular to a blasting device for a limestone mine and a blasting method thereof.
Background
In limestone mining, medium-length hole blasting is a core technology of open-pit mining, and the blasting effect can directly influence other subsequent processes. The continuous charging technology is the most charging structure adopted in the limestone mine blasting in China at present, the explosive consumption is high, and the problems of excessive crushing and the like can be caused under certain geological conditions. In recent years, the price of initiating explosive devices is higher and higher, the market competition is more and more intense, the traditional continuous explosive charging can not meet the market demand, and each enterprise actively searches an explosive charging structure with higher efficiency and lower consumption cost. The spaced charging technology is an emerging technology derived from the continuous charging technology, and has the effects of reducing consumption and saving energy. Compared with a continuous charging structure, the explosive obtained after the blasting of the spaced charging structure is more uniform in lumpiness, less in blocks, optimized in accumulation shape and capable of saving the explosive and reducing blasting vibration.
When the blasting device is arranged, each blast hole needs to be filled so as to achieve the effects of increasing the pressure of the detonation gas acting on the hole wall and prolonging the time of the pressure action, thereby greatly improving the spalling degree and the throwing distance of the limestone and improving the blasting effect. However, in the prior art, the operation of filling the blast hole is usually made of local materials, and the blast hole is generally filled by using materials such as mud chips and the like as the stemming, so that the operation is inconvenient, and the filling quality assurance is poor; the mode of filling a gun barrel filled with explosives in a gun hole is adopted, and the adjacent explosives are divided by a partition plate fixedly arranged on the inner wall of the gun barrel, but in the mode, each explosive needs to be filled respectively, so that the assembly efficiency of stone ore blasting is reduced.
Disclosure of Invention
Therefore, the invention provides an explosion device for a limestone mine and an explosion method thereof, which aim to solve the defects in the prior art.
A blasting device for a limestone mine comprises an initiator, explosives which are respectively embedded in a plurality of explosive tube assemblies and a detonating cord which is used for connecting a plurality of the explosives with the initiator, the explosive tube assemblies are respectively placed in blasting holes, a time delay device is arranged between every two adjacent explosives, each explosive tube assembly comprises a plurality of blasting units and a sealing tube separation assembly which is arranged between every two adjacent blasting units, each blasting unit comprises an explosive tube and an expansion tube which can be detachably connected with one end of the explosive tube, a group of explosives and the time delay device are arranged in each explosive tube, a solid agent which volatilizes gas when meeting specific liquid is filled in the expansion tube, and the sealing tube separation assembly is arranged on the expansion tube and comprises a sealing tube valve and an easily-melting connecting piece which is solid at normal temperature and is connected with the sealing tube valve to enable the sealing tube valve to be in a normally open state, and when the fusible connecting piece is heated and then melted, the pipe sealing valve seals the pipe orifice inside the expansion pipe, and the melted fusible connecting piece liquid is fused with the solid agent through the flow guide hole, so that the expansion pipe expands and plugs the explosion hole.
Preferably, the expansion pipe comprises hard connecting parts at two ends and a soft expansion part between the two hard connecting parts, a ring cylinder for filling a solid agent is arranged on the inner side wall of the soft expansion part, one of the hard connecting parts is connected with the explosion pipe, two mounting holes are symmetrically arranged on the other hard connecting part, and a mounting block is connected to the side wall of the hard connecting part between the two mounting holes;
the utility model discloses a pipe sealing separation subassembly, including the staple bolt, seal pipe and divide the subassembly to be two sets of for symmetric distribution, all include staple bolt and the inside mount pad that is provided with the guide way, the staple bolt is connected on the installation piece, and the mount pad card is established in the inside of mounting hole, seal pipe valve slidable mounting be in the guide way, through compression spring connection between the inboard of sealing the pipe valve and the mount pad, the inboard of sealing the pipe valve still is provided with annotates the liquid constant head tank, be provided with on the mount pad with annotate the liquid hole of annotating the mutual intercommunication of liquid constant head tank, annotate the liquid mouth of annotating the liquid hole and extend to the staple bolt outside of mount pad one side, the fusible connecting piece is for annotating the solidification state after annotating liquid constant head tank and annotating the liquid hole, the water conservancy diversion hole sets.
Preferably, the detonation line comprises a main line and a branch line, one end of the main line is connected with the detonator, the delay device comprises a main line delay element and a branch line delay element, the main line delay element is serially arranged at the orifice of each detonation hole of the main line, the main line delay element is connected with the branch line, the branch line extends to the interior of the explosive tube assembly, the plurality of branch line delay elements are serially connected on the branch line, each branch line delay element is connected with an explosive, and the branch line delay element and the explosive connected with the branch line are arranged in the same detonation tube of the detonation unit.
Preferably, the explosion pipe and the expansion pipe are screwed together by threads, an explosion opening is formed in the side wall of one side of the explosion pipe, and the caliber of the explosion opening is smaller than the minimum diameter of the explosive and the delay device.
Preferably, the hoop comprises semicircular rings and connecting blocks arranged at the tangential directions of the two ends of the semicircular rings, and the connecting blocks and the mounting blocks are connected through bolts and correspond to one sides of the two semicircular rings which are symmetrically arranged.
Preferably, two side walls of the expansion pipe corresponding to the mounting hole are provided with side wall guide plates for guiding the mounting seat.
A method of blasting a blasting apparatus for a limestone mine, comprising the steps of:
s100, arranging blast holes: carrying out hole distribution design according to lithology of a region to be blasted, determining hole pitch and row pitch of the arranged blast holes, and carrying out drilling operation by using drilling equipment, wherein the depth and the angle of a drilled hole meet the design requirements;
s200, assembling a medicine tube assembly: assembling the explosive tubes and the expansion tubes of the explosive units of the explosive tube assembly, adjusting the direction of an explosion opening on the explosive tube according to lithology of different depths of an explosion hole, and connecting a plurality of explosive units together to form an explosive tube cavity;
pouring a seal pipe separating assembly, when a seal pipe valve is pressed against the inside of the mounting seat, injecting molten metal liquid into a through filling hole between the seal pipe valve and the mounting seat, forming a fusible connecting piece after the metal liquid is solidified, and then mounting the seal pipe separating assembly on the pipe wall of the expansion pipe to complete the assembly of the explosive pipe assembly;
s300, spaced charging: putting the explosive and the time delay device into a vertically arranged and assembled explosive tube assembly through a detonating cord, and sinking the explosive tube assembly with the explosive arranged in an explosion hole;
s400, explosive initiation: the detonator is ignited to ignite the detonating cord, the heat emitted after the first explosive is detonated melts the fusible connecting piece, the pipe sealing valve is popped out from the inside of the mounting seat and is blocked among the explosion units, the molten metal liquid is contacted with the solid agent through the flow guide hole to generate chemical reaction to release gas, and the side wall of the expansion pipe is expanded and supported on the side wall of the explosion hole.
The invention has the following advantages:
the invention puts the explosive tube component filled with explosive into the explosion hole, the explosive tube component comprises a plurality of explosion units and a sealing tube separation component arranged between two adjacent explosion units, each explosion unit comprises an explosion tube and an expansion tube detachably connected with one end of the explosion tube, each explosion tube is internally provided with a group of explosive and a time delay device, the expansion tube is internally filled with a solid agent capable of volatilizing gas when meeting specific liquid, the sealing tube separation component is arranged on the expansion tube and comprises a sealing tube valve and a fusible connecting piece, the fusible connecting piece is in a solid state at normal temperature and is connected with the sealing tube valve to enable the sealing tube valve to be in a normally open state, the serially connected explosive is put into the corresponding position of each explosion unit of the explosive tube component, and after the first explosive is exploded, the fusible explosive connecting piece is melted after being heated, the sealing tube valves seal the inner tube openings of the expansion tube, the two ends of the plurality of explosion units are quickly plugged, and the assembly efficiency of the explosion device is improved; and the melted fusible connecting piece liquid is fused with the solid agent through the diversion holes, so that the expansion pipe expands and blocks the explosion holes, and the sectional filling efficiency of the explosion holes is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a cartridge assembly of the present invention;
fig. 3 is a schematic diagram of an explosive structure of an explosive unit according to the present invention;
FIG. 4 is an exploded view of the seal separation assembly and expansion tube of the present invention;
FIG. 5 is a schematic view of the open pipe sealing valve of the present invention;
FIG. 6 is a schematic view of the closed tube sealing valve of the present invention;
FIG. 7 is a schematic view of a partial longitudinal cross-section of the expansion tube of the present invention (when the fusible link is not fused);
fig. 8 is a schematic view of a partial longitudinal cross-section of the expansion pipe of the present invention (the fusible link is in contact with the solid agent when molten).
In the figure:
1-a detonator; 2-a cartridge assembly; 3-an explosive; 4-a detonating cord; 5-blast hole; 6-a time delay device;
201-an explosive unit; 202-a seal tube separation assembly; 203-a blast tube; 204-an expansion tube; 205-a solid agent; 206-a tube sealing valve; 207-fusible links; 208-diversion holes; 209-explosion port; 210-a hard joint; 211-soft swelling part; 212-mounting holes; 213-mounting block; 214-anchor ear; 215-a mounting seat; 216-a compression spring; 217-liquid injection positioning groove; 218-a liquid injection hole; 219-ring cylinder; 220-liquid injection port; 221-semicircular ring; 222-a connecting block; 223-bolt; 224-sidewall guide plate;
401-a main line; 402-tributary lines;
601-main path delay element; 602-accessory delay.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 8, the present invention provides a blasting apparatus for a limestone mine, which can achieve fixing of a cartridge assembly 2 inside a blast hole 5 at the time of blasting, and can achieve rapid plugging of both ends of each blasting unit 201, improving blasting efficiency. Specifically, the method comprises the following steps:
the blasting device comprises an initiator 1, explosives 3 buried in a plurality of explosive tube assemblies 2 respectively, and a detonating cord 4 used for connecting the explosives 3 with the initiator 1, wherein the explosive tube assemblies 2 are placed in blasting holes 5 respectively, and a time delay device 6 is arranged between every two adjacent explosives 3.
The cartridge assembly 2 comprises a plurality of explosion units 201 and a tube sealing separation assembly 202 arranged between two adjacent explosion units 201, wherein each explosion unit 201 comprises an explosion tube 203 and an expansion tube 204 detachably connected to one end of the explosion tube 203. Each of the detonation tubes 203 is provided with a group of explosives 3 and a time delay device 6.
The explosion tube 203 and the expansion tube 204 are screwed, an explosion opening 209 is arranged on one side wall of the explosion tube 203, and the caliber of the explosion opening 209 is smaller than the minimum diameter of the explosive 3 and the delay device 6. The explosive 3 and the time delay means 6 are prevented from falling off from the explosion port 209 side.
Through the survey of geological conditions in the previous period, the rock quality condition of the side walls of the blast hole 5 with different depths is known, and the orientation of the blast opening 209 is adjusted in advance, so that the blast opening 209 is aligned with the angle which is the hardest along the rock or is most beneficial to blasting.
The expansion pipe 204 is filled with a solid agent 205 which volatilizes gas when meeting specific liquid, the pipe sealing separation assembly 202 is arranged on the expansion pipe 204 and comprises a pipe sealing valve 206 and a fusible connecting piece 207, the fusible connecting piece 207 is in a solid state at normal temperature and is connected with the pipe sealing valve 206 to enable the pipe sealing valve 206 to be in a normally open state, when the fusible connecting piece 207 is heated and melted, the pipe sealing valve 206 seals a pipe orifice inside the expansion pipe 204, and the melted fusible connecting piece 207 is fused with the solid agent 205 through the flow guide hole 208, so that the expansion pipe 204 expands and blocks the explosion hole 5.
The expansion pipe 204 comprises hard connecting parts 210 at two ends and a soft expansion part 211 between the two hard connecting parts 210, and the interior of the soft expansion part 211 can expand outwards to support and block the blast hole 5 after being filled with gas.
The inner side wall of the soft expansion part 211 is provided with a ring barrel 219 for filling the solid agent 205, one of the hard connecting parts 210 is connected with the explosion tube 203, the other hard connecting part 210 is symmetrically provided with two mounting holes 212, and the side wall of the hard connecting part 210 between the two mounting holes 212 is connected with a mounting block 213.
The tube sealing separation assemblies 202 are symmetrically distributed in two groups, and each comprises an anchor ear 214 and a mounting seat 215 with a guide groove arranged inside, and the anchor ear 214 is connected to a mounting block 213. Specifically, the method comprises the following steps: the anchor ear 214 comprises a semicircular ring 221 and connecting blocks 222 arranged at two tangential ends of the semicircular ring 221, and the two connecting blocks 222 corresponding to one side of the two semicircular rings 221 which are symmetrically arranged are connected with the mounting block 213 through bolts 223.
The mounting seat 215 is engaged with the inside of the mounting hole 212. Two side walls of the expansion pipe 204 corresponding to the mounting holes 212 are provided with side wall guide plates 224 for guiding the mounting seat 215. The side wall guide plate 224 can provide support for the mounting seat 215, so as to facilitate the installation of the mounting seat 215 inside the mounting hole 212, and can also enhance the stability of the structure during explosion, so as to prevent the mounting seat 215 from being inclined, which makes it difficult to butt the two pipe sealing valves 206.
The pipe sealing valve 206 is slidably mounted in the guide groove, the inner side of the pipe sealing valve 206 is connected with the mounting seat 215 through a compression spring 216, a liquid injection positioning groove 217 is further arranged on the inner side of the pipe sealing valve 206, a liquid injection hole 218 communicated with the liquid injection positioning groove 217 is formed in the mounting seat 215, a liquid injection port 220 of the liquid injection hole 218 extends to the outside of the hoop 214 on one side of the mounting seat 215, the fusible connecting piece 207 is in a solidification state after liquid injection positioning groove 217 and liquid injection hole 218 are injected with liquid, the diversion hole 208 is arranged on the side wall of the liquid injection positioning groove 217 and the mounting seat 215, and the liquid positioning groove 217 and the annular cylinder 219 are communicated with each other through the diversion hole 208.
In operation, when the tube sealing valve 206 is in an open state (the compression spring 216 is compressed), the easily-melted metal liquid is injected into the injection port 220, the metal liquid flows into the injection positioning groove 217 through the injection hole 218, and the injection positioning groove 217 is favorable for forming the connection of the easily-melted connecting piece 207 to the tube sealing valve 206 and the mounting seat 215 after the metal liquid is solidified. The fusible link 207 is melted after being heated, and the two pipe sealing valves 206 move towards each other and seal the expansion pipe 204 under the elastic force of the compression spring 216.
The detonating cord 4 comprises a main cord 401 and a branch cord 402, one end of the main cord 401 is connected with the detonator 1, the time delay device 6 comprises a main circuit time delay element 601 and a sub circuit time delay element 602, the main circuit time delay element 601 is serially arranged at the orifice of the main cord 401 at each detonating hole 5, the main circuit time delay element 601 is connected with the branch cord 402, the branch cord 402 extends to the interior of the cartridge assembly 2, a plurality of sub circuit time delay elements 602 are serially arranged on the branch cord 402, each sub circuit time delay element 602 is connected with an explosive 3, and the sub circuit time delay element 602 and the explosive 3 connected with the sub circuit time delay element are arranged in the detonating tube 203 of the same detonating unit 201.
The blasting method of the blasting device for the limestone mine comprises the following steps:
s100, arranging blast holes: carrying out hole distribution design according to the lithology of the area to be blasted, determining the pitch and the row pitch of the arranged blast holes 5, and carrying out drilling operation by using drilling equipment, wherein the depth and the angle of the drilled holes meet the design requirements;
s200, assembling a medicine tube assembly:
firstly, assembling the explosion tube 203 and the expansion tube 204 of each explosion unit 201 of the explosive tube assembly 2, adjusting the direction of an explosion opening 209 on the explosion tube 203 according to lithology of different depths of an explosion hole 5, and connecting a plurality of explosion units 201 to form an explosive tube cavity;
pouring the tube sealing separation assembly 202, when the tube sealing valve 206 is pressed against the inside of the mounting seat 215, injecting molten metal liquid into a through pouring hole between the two, forming a fusible connecting piece 207 after the metal liquid is solidified, and then mounting the tube sealing separation assembly 202 on the wall of the expansion tube 204 to complete the assembly of the explosive tube assembly 2;
s300, spaced charging: putting the explosive 3 and the time delay device 6 into the vertically assembled cartridge assembly 2 through the detonating cord 4, and sinking the cartridge assembly 2 with the explosive 3 in the explosion hole 5;
s400, explosive initiation: the ignition initiator 1 ignites the detonating cord 4 and the dissipated heat after detonation of the first explosive 3 melts the fusible link 207. Specifically, the initiator 1 is ignited to detonate the first explosive 3 on the branch line 402 connected to the main line 401 via the main line delay element 601, and the fusible link 207 on the same branch line 402 is simultaneously melted by the heat generated by the detonation. The pipe sealing valve 206 is ejected from the inside of the mounting seat 215 to be sealed and blocked among the explosion units 201, the molten metal liquid contacts with the solid agent 205 through the diversion hole 208 to generate a chemical reaction to release gas, the side wall of the expansion pipe 204 is expanded and supported on the side wall of the explosion hole 5, and the sectional filling of the explosion hole 5 is rapidly realized. Due to the existence of the time delay device 6, a plurality of explosives 3 can be shot in batches, so that the ore blasting noise is reduced.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. The utility model provides a blasting unit for limestone mine, includes detonator (1), buries explosive (3) in a plurality of explosive tube subassemblies (2) and is arranged in detonating cord (4) that a plurality of explosive (3) are connected with detonator (1) underground respectively, and explosive tube subassembly (2) are placed respectively in blast hole (5), adjacent two be provided with time delay device (6), its characterized in that between explosive (3): the explosive tube component (2) comprises a plurality of explosive units (201) and a tube sealing separation component (202) arranged between two adjacent explosive units (201), each explosive unit (201) comprises an explosive tube (203) and an expansion tube (204) detachably connected to one end of the explosive tube (203), each explosive tube (203) is internally provided with a group of explosives (3) and a time delay device (6), a solid agent (205) capable of volatilizing gas when meeting specific liquid is filled in the expansion tube (204), the tube sealing separation component (202) is arranged on the expansion tube (204) and comprises a tube sealing valve (206) and a fusible connecting piece (207), the fusible connecting piece (207) is in a solid state at normal temperature and is connected with the tube sealing valve (206) to enable the tube sealing valve (206) to be in a normally open state, and the fusible connecting piece (207) is fused after being heated, the pipe sealing valve (206) seals the pipe orifice inside the expansion pipe (204), and the fused fusible connecting piece (207) liquid is fused with the solid agent (205) through the diversion hole (208), so that the expansion pipe (204) expands and blocks the explosion hole (5).
2. A blasting apparatus for a limestone mine as claimed in claim 1, wherein: the expansion pipe (204) comprises hard connecting parts (210) at two ends and a soft expansion part (211) between the two hard connecting parts (210), the inner side wall of the soft expansion part (211) is provided with a ring barrel (219) for filling a solid agent (205), one hard connecting part (210) is connected with the explosion pipe (203), the other hard connecting part (210) is symmetrically provided with two mounting holes (212), and the side wall of the hard connecting part (210) between the two mounting holes (212) is connected with a mounting block (213);
the pipe sealing separation components (202) are symmetrically distributed in two groups and respectively comprise an anchor ear (214) and a mounting seat (215) with a guide groove arranged inside, the anchor ear (214) is connected to a mounting block (213), the mounting seat (215) is clamped inside the mounting hole (212), the pipe sealing valve (206) is slidably mounted in the guide groove, the inner side of the pipe sealing valve (206) is connected with the mounting seat (215) through a compression spring (216), a positioning groove (217) is further arranged on the inner side of the pipe sealing valve (206), a liquid injection hole (218) communicated with the liquid injection positioning groove (217) is arranged on the mounting seat (215), a liquid injection port (220) of the liquid injection hole (218) extends to the outer part of the anchor ear (214) on one side of the mounting seat (215), and the fusible connecting piece (207) is in a solidification state after liquid injection positioning groove (217) and liquid injection hole (218) are injected with liquid, the diversion holes (208) are formed in the side walls of the liquid injection positioning grooves (217) and the mounting seat (215), and the liquid positioning grooves (217) are communicated with the annular cylinder (219) through the diversion holes (208).
3. A blasting apparatus for a limestone mine as claimed in claim 1, wherein: the detonating cord (4) comprises a main cord (401) and a branch cord (402), one end of the main cord (401) is connected with the detonator (1), the time delay device (6) comprises a main cord time delay element (601) and a secondary cord time delay element (602), the main cord time delay element (601) is serially arranged at the orifice of each detonating hole (5) of the main cord (401), the main cord time delay element (601) is connected with the branch cord (402), the branch cord (402) extends to the interior of the explosive tube component (2), a plurality of secondary cord time delay elements (602) are serially arranged on the branch cord (402), each secondary cord time delay element (602) is connected with an explosive (3), and the secondary cord time delay element (602) and the explosive (3) connected with the secondary cord time delay element are located in the detonating tube (203) of the same detonating unit (201).
4. A blasting apparatus for a limestone mine as claimed in claim 1, wherein: the explosion tube (203) and the expansion tube (204) are screwed, an explosion opening (209) is formed in the side wall of one side of the explosion tube (203), and the caliber of the explosion opening (209) is smaller than the minimum diameter of the explosive (3) and the delay device (6).
5. A blasting apparatus for a limestone mine as claimed in claim 2, wherein: the hoop (214) comprises a semicircular ring (221) and connecting blocks (222) arranged at the tangential direction of two ends of the semicircular ring (221), and the two connecting blocks (222) which correspond to one sides of the two semicircular rings (221) which are symmetrically arranged are connected with the mounting block (213) through bolts (223).
6. A blasting apparatus for a limestone mine as claimed in claim 2, wherein: two side walls corresponding to the mounting holes (212) in the expansion pipe (204) are provided with side wall guide plates (224) for guiding the mounting seat (215).
7. The blasting method of the blasting apparatus for a limestone mine according to any one of claims 1 to 6, wherein: the method comprises the following steps:
s100, arranging blast holes: carrying out hole distribution design according to the lithology of the area to be blasted, determining the pitch and the row pitch of the arranged blast holes (5), and carrying out drilling operation by using drilling equipment, wherein the depth and the angle of the drilled holes meet the design requirements;
s200, assembling a medicine tube assembly: assembling the explosion tube (203) and the expansion tube (204) of each explosion unit (201) of the explosive tube assembly (2), adjusting the direction of an explosion opening (209) on the explosion tube (203) according to lithology of different depths of an explosion hole (5), and connecting a plurality of explosion units (201) together to form an explosive tube cavity;
pouring a pipe sealing separation assembly (202), when a pipe sealing valve (206) is pressed against the inside of the mounting seat (215), injecting molten metal liquid into a through pouring hole between the pipe sealing valve and the mounting seat, forming a fusible connecting piece (207) after the metal liquid is solidified, and then mounting the pipe sealing separation assembly (202) on the pipe wall of the expansion pipe (204) to complete the assembly of the medicine pipe assembly (2);
s300, spaced charging: putting the explosive (3) and the time delay device (6) into the vertically assembled explosive tube assembly (2) through the detonating cord (4), and sinking the explosive tube assembly (2) with the explosive (3) in the detonating hole (5);
s400, explosive initiation: the detonator (1) is ignited to ignite the detonating cord (4), the fusible connecting piece (207) is melted by the emitted heat after the first explosive (3) is detonated, the pipe sealing valve (206) is popped out from the inside of the mounting seat (215) and is sealed among all the explosion units (201), the melted metal liquid is contacted with the solid agent (205) through the flow guide hole (208) to carry out chemical reaction to release gas, and the side wall of the expansion pipe (204) is expanded and supported on the side wall of the explosion hole (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011023565.3A CN112161536B (en) | 2020-09-25 | 2020-09-25 | Blasting device for limestone mine and blasting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011023565.3A CN112161536B (en) | 2020-09-25 | 2020-09-25 | Blasting device for limestone mine and blasting method thereof |
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| CN112161536B CN112161536B (en) | 2022-12-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964142A (en) * | 2021-03-04 | 2021-06-15 | 浙江安盛爆破工程有限公司 | Slope blasting method |
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| CN112161536B (en) | 2022-12-13 |
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