CN110735637B - Carbon dioxide deflagration pulse type pressurization rock breaking device and process method - Google Patents
Carbon dioxide deflagration pulse type pressurization rock breaking device and process method Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000004200 deflagration Methods 0.000 title claims abstract description 84
- 239000011435 rock Substances 0.000 title claims abstract description 47
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 44
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000008569 process Effects 0.000 title claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 106
- 239000002994 raw material Substances 0.000 claims abstract description 105
- 238000005474 detonation Methods 0.000 claims abstract description 66
- 230000001052 transient effect Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 abstract description 5
- 230000003116 impacting effect Effects 0.000 abstract 1
- 238000005422 blasting Methods 0.000 description 13
- 108010066114 cabin-2 Proteins 0.000 description 12
- 239000002360 explosive Substances 0.000 description 12
- 238000004080 punching Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 235000011089 carbon dioxide Nutrition 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003801 milling Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/12—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
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- Mining & Mineral Resources (AREA)
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- Geology (AREA)
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Abstract
The invention discloses a carbon dioxide deflagration pulse type pressurization rock breaking device and a process method, which comprises a raw material storage bin and a deflagration bin arranged below the raw material storage bin; one end of the detonation cabin is opened and connected with a pressure-resistant pipeline leading to a detonation position, and an exhaust pipeline is arranged in the middle of the detonation cabin and connected to an exhaust device; the exhaust device is connected to a high-pressure pump through a first pipeline, and the high-pressure pump is connected to the raw material storage bin through a second pipeline; a storage bin switch valve is arranged in the raw material storage bin, and the lower end part of the storage bin switch valve passes through the feeding channel and is positioned in the deflagration bin; an impeller is arranged in the detonation cabin corresponding to the lower end part, and an ignition device is also arranged in the detonation cabin; the device realizes fracturing by impacting the blasted part with high-pressure high-temperature gas which generates transient state after the expansion and phase change of the deflagration raw material, and has high safety, easy operation and good fracturing effect.
Description
Technical Field
The invention relates to the technical field of blasting devices and methods, in particular to a carbon dioxide deflagration pulse type pressurization rock breaking device and a process method.
Background
In municipal traffic engineering such as mining of mines and stones, excavation of foundation pits, construction of tunnels and underground spaces, safe blasting demolition of hard stones/boulders, blockage and dredging of pipelines and the like, blasting is often needed. The blasting fracturing method has the characteristics of high efficiency, low cost and the like, and is widely applied to rock excavation in mining engineering, underground traffic engineering, water conservancy and hydropower engineering and the like. However, strong shock waves generated in the blasting operation process can cause disturbance and damage of near-zone rock masses and vibration damage of the rock masses, so that certain influence can be caused on the stability of the engineering rock masses and the safety of the surrounding environment. In order to improve the operation safety and reduce the strong impact disturbance, and simultaneously achieve the ideal purposeThe rock breaking effect is achieved by using a novel rock breaking technology of the rock mass, particularly CO, by utilizing high-energy gas expansion to do work and crack2The phase change expansion cracking technology is receiving wide attention in the fields of mining, tunnel excavation, municipal transportation and the like.
High energy gas fracturing technology, which was first introduced in the united states in the 60's 19 th century, is a technique for fracturing rock mass using shock waves and explosive gas generated by the combustion of a fire (explosive) charge in a short time. The reservoir is initially fractured by explosion by high explosive such as TNT, but the high explosive is gradually eliminated because the explosion damages the shaft and the stratum, and instead, the high-energy gas fracturing is performed by deflagration of explosive such as nitrocotton. In recent years, a series of high-energy gunpowder with more stable deflagration, safer detonation and higher efficiency, such as a thick nitromethane explosive, a liquid propellant and the like, also appear. In principle, CO2The phase change expansion cracking device also belongs to one of high-energy gas fracturing technologies, and is researched and developed by scientific research personnel in Europe and America at the earliest. The device utilizes liquid CO2Using liquid CO as medium2And a heating tube (explosive substance) are enclosed in a closed container. The heating tube is excited to generate high-temperature and liquid CO of over 800 ℃ within tens of milliseconds2The pressure is increased sharply, and high-pressure gas is released rapidly, so that the rock mass is cracked or broken. In CO2In the construction process of gas explosion cracking rock mass, as the heating tube (II type explosive) is triggered in advance under the action of accidental factors such as friction, static electricity and the like, the tube explosion or tube flying event of the cracking tube occurs. However, both the controlled blasting technology and the high-energy gas fracturing technology are currently used for I, II-type civil explosives (the heating powder used by the current carbon dioxide phase change expansion fracturing technology belongs to II-type civil explosives), and the problems of safety and impact disturbance are not fundamentally solved. Therefore, it is required to develop a high-energy gas fracturing method which is high in safety and easy to operate.
Disclosure of Invention
The invention aims to provide a carbon dioxide deflagration pulse type pressurization rock breaking device and a process method which are high in safety and easy to operate, aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a carbon dioxide deflagration pulse type pressurization rock breaking device comprises a raw material storage bin and a deflagration bin arranged below the raw material storage bin; one end of the detonation cabin is opened and connected with a pressure-resistant pipeline leading to a detonation position, and an exhaust pipeline is arranged in the middle of the detonation cabin and connected to an exhaust device; the exhaust device is connected to a high-pressure pump through a first pipeline, and the high-pressure pump is connected to the raw material storage bin through a second pipeline;
the raw material storage bin is abutted with the deflagration bin and is provided with a feeding channel penetrating through the wall of the bin; a storage bin switch valve is arranged in the raw material storage bin, and the lower end part of the storage bin switch valve penetrates through the feeding channel and is positioned in the detonation bin; an impeller is arranged in the detonation cabin corresponding to the lower end part, the impeller is connected with a motor through a rotating shaft, and the motor is arranged outside the detonation cabin; and an ignition device is also arranged in the detonation cabin.
The carbon dioxide deflagration pulse type pressurization rock breaking device utilizes high-pressure high-temperature gas generated by transient state after the deflagration raw material expands and changes phase to impact the blasted part to realize fracturing.
The raw material storage bin is used for storing deflagration raw materials, realizes the circular feeding and supplement of the raw materials through the control of a valve, realizes deflagration in the deflagration bin and bears high pressure; after every deflagration, residual gas enters the raw material storage bin again through the exhaust device via the high-pressure pump so as to maintain the pressure in the raw material storage bin, and the raw material is pressed into the deflagration bin after a valve is opened.
The motor can drive the impeller rotates to realize that the circulation is opened and is closed storage bin switch valve, impeller pivoted frequency and dwell time and detonation frequency and detonation time phase-match realize that the punching press of detonating raw materials many times pulse replaces the punching press of single bolus to reach better fracturing effect.
Furthermore, solid block-shaped, granular or/and powdery carbon dioxide energy gathering agents are arranged in the raw material storage bin. The use of solid carbon dioxide feedstock, such as dry ice, enables the storage of more feedstock in the feedstock storage silo.
Further, the lower end face of the raw material storage bin is welded with the upper end face of the detonation bin; the raw material storage bin and the deflagration bin are both formed by casting stainless steel materials, and an openable filler bin door is arranged on the upper side face of the raw material storage bin. When the switch valve of the storage bin is closed, the side surface of the storage bin can be opened, and the storage bin can be used for supplementing consumed deflagration raw materials.
Further, the storage bin switching valve comprises a valve rod and the lower end part which are connected with each other; the valve stem extends through the feed channel into the feedstock storage bin; the valve rod with the junction of tip is equipped with the round arch down, bellied external diameter equals feedstock channel's internal diameter, bellied circumference is equipped with a plurality of layers of sealing washer.
Further, the valve stem diameter is smaller than the diameter of the feed channel.
Further, the impeller is a blade-shaped cylinder cast by metal materials, and two ends of the blade-shaped cylinder are both arc-shaped; the outer contour of the lower end part is matched with the blade-shaped cylinder.
Furthermore, a raw material grinding device is also arranged in the raw material storage bin; the raw material grinding device comprises a file with teeth arranged in the raw material storage bin and a gear transmission device arranged at the top of the storage bin; the file is connected with the gear transmission device through a transmission shaft. The rasp can be with bold solid raw materials in the raw materials storage storehouse rubs to become powdery raw materials, put into again in the detonation storehouse to improve the detonation effect.
Further, ignition is including setting up the electric ignition head in the storehouse of detonating, electric ignition head passes through the wire and connects external power source and ignition controller.
Furthermore, an air suction device is arranged in the exhaust device and connected with the exhaust pipeline.
A carbon dioxide deflagration pulse type pressurization rock breaking process method comprises the carbon dioxide deflagration pulse type pressurization rock breaking device, and the process method comprises the following steps:
the method comprises the following steps: adding deflagration raw materials into the raw material storage bin and grinding into powder;
step two: controlling a motor to rotate the impeller to open a storage bin switch valve, and pressing the powdery deflagration raw material into the deflagration bin; closing the storage bin switching valve;
step three: triggering the deflagration raw material to deflagrate and press through an ignition device, and flushing the generated transient high-pressure gas into the blasted part through a pressure-resistant pipeline to realize first fracturing;
step four: opening an exhaust device to exhaust residual gas after deflagration, introducing the residual gas into the raw material storage bin through a high-pressure pump, maintaining the pressure in the bin, and closing the exhaust device;
step five: and opening the storage bin switch valve again, repeating the third step to the fourth step, and triggering next detonation stamping until fracturing of the blasted part is completed.
Through the steps, supercritical carbon dioxide multi-pulse punching is adopted to replace single large-dose punching, the ideal fracturing effect of pulse type detonation punching can be achieved, the safety is high, the operation is easy, and the method can be suitable for laboratory simulation blasting, tunnel driving, foundation pit excavation, underground resource blasting mining and the like.
The pulse type pressurization rock breaking process method uses a detonation pressurization mode, achieves the purpose of fracturing by using transient high pressure provided by detonation, can provide the transient high pressure for multiple times by circulating detonation so as to achieve the purpose of higher pressure, and omits the operation mode of replacing a blasting barrel for multiple times in the prior art; the fracturing of underground rock above ground can be achieved by directly delivering high-pressure gas to the explosive.
The process method comprises the steps of utilizing detonation raw materials (dry ice powder energy collecting agents) to achieve detonation stamping, utilizing multiple times of transient high pressure to achieve fracturing of rock bodies, utilizing impellers to push a storage bin switch valve to achieve supplement of the detonation raw materials under the condition that the device is not detached, utilizing an exhaust device to achieve recycling of gas after detonation, utilizing files in the storage bin to achieve pulverization of the solid raw materials, utilizing a carbon dioxide high-pressure pump to provide continuous high pressure for the storage bin, facilitating the powdered detonation raw materials to enter the detonation bin, and utilizing the motors to control ideal rotation, stopping time and stopping positions of the impellers.
Compared with the prior art, the invention has the beneficial effects that: 1. the carbon dioxide deflagration pulse type pressurization rock breaking device and the process method utilize transient high-pressure high-temperature gas generated after the expansion phase change of deflagration raw materials to impact a blasted part to realize fracturing, and multiple pulse stamping replaces single large-dose stamping to achieve better fracturing effect, have high safety and are easy to operate; 2. the storage bin switch valve and the impeller are arranged in a matched mode, so that multiple times of feeding can be performed rapidly, and the manual feeding and the frequent replacement of the blasting cartridge are reduced; 3. high-temperature and high-pressure gas is conveyed through a pressure-resistant pipeline, so that remote and underground rock fracturing can be realized; 4. through the setting of exhaust apparatus and high-pressure pump, can rationally utilize remaining high-pressure gas, for principle storage storehouse provides suitable pressure.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a deflagration pulse type pressurization rock breaking device for carbon dioxide according to the invention;
FIG. 2 is a schematic diagram of a deflagration cabin side view structure of a carbon dioxide deflagration pulse type pressurization rock breaking device according to the invention;
FIG. 3 is a schematic overall structure diagram of another carbon dioxide deflagration pulse type pressurization rock breaking device according to the invention;
FIG. 4 is a schematic structural diagram of a raw material milling device of another carbon dioxide deflagration pulse type pressurization rock breaking device according to the invention;
FIG. 5 is a schematic top view of the raw material milling apparatus of FIG. 4;
in the figure: 1. a raw material storage bin; 2. a deflagration cabin; 3. a pressure-resistant pipeline; 4. an exhaust duct; 5. an exhaust device; 6. a first pipeline; 7. a high pressure pump; 8. a second pipeline; 9. a feed channel; 10. a storage bin switch valve; 11. a lower end portion; 12. a valve stem; 13. a protrusion; 14. an impeller; 15. a motor; 16. filing; 17. a drive shaft; 18. a turntable.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, a deflagration pulse type pressurization rock breaking device for carbon dioxide comprises a raw material storage bin 1 and a deflagration bin 2 arranged below the raw material storage bin 1; one end of the detonation cabin 2 is opened and connected with a pressure-resistant pipeline 3 leading to a detonation part, and the middle part of the detonation cabin 2 is provided with an exhaust pipeline 4 and connected with an exhaust device 5; the exhaust device 5 is connected with a high-pressure pump 7 through a first pipeline 6, and the high-pressure pump 7 is connected with the raw material storage bin 1 through a second pipeline 8;
the bottom surface of the raw material storage bin 1 is tightly welded with the top surface of the deflagration bin 2, and a feeding channel 9 penetrating through two bin walls is arranged; a storage bin switch valve 10 is arranged in the raw material storage bin 1, and the lower end part 11 of the storage bin switch valve 10 penetrates through the feeding channel 9 and is positioned in the detonation bin 2; an impeller 14 is arranged in the detonation cabin 2 corresponding to the lower end part 11, the impeller 14 is connected with a motor 15 through a rotating shaft, and the motor 15 is arranged outside the detonation cabin 2; an ignition device (not shown in the figure) is also arranged in the detonation cabin 2.
The carbon dioxide deflagration pulse type pressurization rock breaking device utilizes high-pressure high-temperature gas generated by transient state after the deflagration raw material expands and changes phase to impact the blasted part to realize fracturing.
The raw material storage bin 1 is used for storing deflagration raw materials, the circulating feeding and supplement of the raw materials are realized through the control of a storage bin switch valve 10, and deflagration is realized in the deflagration bin 2 and high pressure is borne; after every deflagration, residual gas enters the raw material storage bin 1 again through the exhaust device 5 via the high-pressure pump 7 so as to maintain the pressure in the raw material storage bin 1, and after a valve is opened, raw materials are pressed into the deflagration bin 2. The high-pressure pump 7 provides a continuous pressure of 20MPa for the raw material storage silo 1.
Further, a solid granular carbon dioxide energy gathering agent is arranged in the raw material storage bin 1. With a solid carbon dioxide feedstock, such as dry ice, more feedstock can be stored in the feedstock storage silo 1.
Further, the raw material storage bin 1 and the deflagration bin 2 are both formed by casting pressure-resistant and high-temperature-resistant steel-iron alloy; the detonation cabin 2 is a cylindrical detonation cabin with the wall thickness of 50mm, the inner diameter of 500mm and the length of 1000 mm; the raw material storage bin 1 is a cubic storage bin with the wall thickness of 50 mm.
The upper side of the raw material storage bin 1 is also provided with an openable filler bin door (not shown in the figure). When the storage bin switch valve 10 is closed, the side of the raw material storage bin 1 can be opened, which can be used to replenish the spent deflagration raw material.
Further, the storage bin switching valve 10 includes a valve stem 12 and the lower end portion 11 connected to each other; the valve rod 12 extends through the feed channel 9 into the raw material storage silo 1; the junction of the valve rod 12 and the lower end part 11 is provided with a circle of bulges 13, the outer diameter of each bulge 13 is equal to the inner diameter of the feeding channel 9, and a plurality of layers of sealing rings are circumferentially arranged on each bulge 13 to ensure the sealing performance when the valve is closed.
Further, the diameter of the valve rod 12 is smaller than that of the feeding channel 9, so that deflagration raw materials can enter the deflagration cabin 2 from a gap between the valve rod and the feeding channel when the valve is opened.
Further, the impeller 14 is a blade-shaped cylinder cast by pressure-resistant and high-temperature-resistant steel-iron alloy, and both ends of the blade-shaped cylinder are arc-shaped; the lower outer contour of the lower end portion 11 is matched with the blade-shaped column. When the impeller 14 is rotated to the vertical state, the lower end part 11 is pressed upwards against the feeding channel 9, namely, the valve is closed; when the impeller rotates and inclines, the lower end part 11 moves downwards to open the valve, and when the impeller 14 rotates to a horizontal state, the valve is opened to a maximum state.
Further, ignition is including setting up the electric ignition head in the storehouse of detonating, electric ignition head passes through the wire and connects external power source and ignition controller.
Further, an air suction device is arranged in the exhaust device 5 and connected with the exhaust pipeline 4.
This burst pulse type pressure boost rock breaking device of carbon dioxide utilizes carbon dioxide (dry ice) energy collecting agent to realize the detonation punching press, utilize transient state high pressure many times to realize the fracturing of rock body, utilize impeller 14 to promote the replenishment of detonation raw materials under the condition that storage silo switch valve 10 realized not the dismounting device, utilize exhaust apparatus 5 to realize the recycling of residual gas behind the detonation, utilize carbon dioxide high-pressure pump 7 to provide lasting high pressure for the storage silo, the detonation raw materials of being convenient for get into the detonation storehouse, utilize motor 15 control impeller 14's intermittent type formula to rotate, stop time and stop position.
Example two:
as shown in fig. 3 and 4, a carbon dioxide deflagration pulse type pressurization rock breaking device comprises a raw material storage bin 1 and a deflagration bin 2 arranged below the raw material storage bin 1; one end of the detonation cabin 2 is opened and connected with a pressure-resistant pipeline 3 leading to a detonation part, and the middle part of the detonation cabin 2 is provided with an exhaust pipeline 4 and connected with an exhaust device 5; the exhaust device 5 is connected with a high-pressure pump 7 through a first pipeline 6, and the high-pressure pump 7 is connected with the raw material storage bin 1 through a second pipeline 8; the bottom surface of the raw material storage bin 1 is tightly welded with the top surface of the deflagration bin 2, and a feeding channel 9 penetrating through two bin walls is arranged;
the raw material storage bin 1 is also internally provided with a raw material grinding device; the raw material milling apparatus includes a file 16 provided in the raw material storage bin, and a turntable 18 provided at the top of the storage bin; the rasp 16 is connected to the turntable 18 by a drive shaft 17. The file 16 is disc-shaped, and a plurality of insections are arranged above the file; a storage bin switch valve is arranged below the file 16 and comprises a valve rod 12 and a lower end part 11, and the valve rod 12 is connected with the file 16 or a transmission shaft 17; the lower end part 11 of the storage bin switch valve 10 passes through the feeding channel 9 and is positioned in the detonation bin 2; an impeller 14 is arranged in the detonation cabin 2 corresponding to the lower end part 11, the impeller 14 is connected with a motor 15 through a rotating shaft, and the motor 15 is arranged outside the detonation cabin 2; an ignition device (not shown in the figure) is also arranged in the detonation cabin 2.
The rasp 16 can grind the massive solid raw materials in the raw material storage bin into powdery raw materials, and then put the powdery raw materials into the deflagration bin so as to improve the deflagration effect.
Gaps are reserved between the periphery of the file 16 and the inner wall of the raw material storage bin, so that powder can fall below the file 16 conveniently; the turntable 18 is connected with a gear transmission device to drive the file 16 to rotate so as to grind the raw materials on the file. Under the non-deflagration working state of the device, the raw materials can be ground into powder in advance.
The arrangement of other components in this embodiment is substantially the same as in the first embodiment.
Example three:
a carbon dioxide deflagration pulse type pressurization rock breaking process method comprises a carbon dioxide deflagration pulse type pressurization rock breaking device in the first embodiment or the second embodiment, and the process method comprises the following steps:
the method comprises the following steps: adding deflagration raw materials into the raw material storage bin and grinding into powder;
step two: controlling a motor to rotate the impeller to open a storage bin switch valve, and pressing the powdery deflagration raw material into the deflagration bin; closing the storage bin switching valve;
step three: triggering the deflagration raw material to deflagrate and press through an ignition device, and flushing the generated transient high-pressure gas into the blasted part through a pressure-resistant pipeline to realize first fracturing;
step four: opening an exhaust device to exhaust residual gas after deflagration, introducing the residual gas into the raw material storage bin through a high-pressure pump, maintaining the pressure in the bin, and closing the exhaust device;
step five: and opening the storage bin switch valve again, repeating the third step to the fourth step, and triggering next detonation stamping until fracturing of the blasted part is completed.
Through the steps, supercritical carbon dioxide multi-pulse punching is adopted to replace single large-dose punching, the ideal fracturing effect of pulse type detonation punching can be achieved, the safety is high, the operation is easy, and the method can be suitable for laboratory simulation blasting, tunnel driving, foundation pit excavation, underground resource blasting mining and the like.
The pulse type pressurization rock breaking process method uses a detonation pressurization mode, achieves the purpose of fracturing by using transient high pressure provided by detonation, can provide the transient high pressure for multiple times by circulating detonation so as to achieve the purpose of higher pressure, and omits the operation mode of replacing a blasting barrel for multiple times in the prior art; the fracturing of underground rock above ground can be achieved by directly delivering high-pressure gas to the explosive.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A carbon dioxide deflagration pulse type pressurization rock breaking device is characterized by comprising a raw material storage bin and a deflagration bin arranged below the raw material storage bin; one end of the detonation cabin is opened and connected with a pressure-resistant pipeline leading to a detonation position, and an exhaust pipeline is arranged in the middle of the detonation cabin and connected to an exhaust device; the exhaust device is connected to a high-pressure pump through a first pipeline, and the high-pressure pump is connected to the raw material storage bin through a second pipeline;
the raw material storage bin is abutted with the deflagration bin and is provided with a feeding channel penetrating through the wall of the bin; a storage bin switch valve is arranged in the raw material storage bin, and the lower end part of the storage bin switch valve penetrates through the feeding channel and is positioned in the detonation bin; an impeller is arranged in the detonation cabin corresponding to the lower end part, the impeller is connected with a motor through a rotating shaft, and the motor is arranged outside the detonation cabin; and an ignition device is also arranged in the detonation cabin.
2. The carbon dioxide deflagration pulse type pressurization rock breaking device is characterized in that solid block-shaped, granular-shaped or/and powdery carbon dioxide energy-gathering agents are arranged in the raw material storage bin.
3. The carbon dioxide deflagration pulse type pressurization rock breaking device as claimed in claim 1, wherein a lower end face of the raw material storage bin is welded with an upper end face of the deflagration bin; the raw material storage bin and the deflagration bin are both formed by casting stainless steel materials, and an openable filler bin door is arranged on the upper side face of the raw material storage bin.
4. The carbon dioxide deflagration pulse type pressurized rock breaking device of claim 1, wherein the storage bin switching valve includes a valve stem and the lower end portion connected to each other; the valve stem extends through the feed channel into the feedstock storage bin; the valve rod with the junction of tip is equipped with the round arch down, bellied external diameter equals feedstock channel's internal diameter, bellied circumference is equipped with a plurality of layers of sealing washer.
5. The carbon dioxide deflagration pulsed pressurized rock breaking device of claim 4, wherein the valve stem diameter is less than the diameter of the feed channel.
6. The carbon dioxide deflagration pulse type pressurization rock breaking device of claim 1, wherein the impeller is a blade-shaped cylinder cast from a metal material, and both ends of the blade-shaped cylinder are arc-shaped; the outer contour of the lower end part is matched with the blade-shaped cylinder.
7. The carbon dioxide deflagration pulse type pressurization rock breaking device as claimed in claim 1, wherein a raw material grinding device is further arranged in the raw material storage bin; the raw material grinding device comprises a file with teeth arranged in the raw material storage bin and a gear transmission device arranged at the top of the storage bin; the file is connected with the gear transmission device through a transmission shaft.
8. The carbon dioxide deflagration pulse type pressurization rock breaking device of claim 1, characterized in that, ignition includes the electric sparking head that sets up in the deflagration storehouse, external power source and ignition controller are connected through the wire to the electric sparking head.
9. The carbon dioxide deflagration pulse type pressurization rock breaking device is characterized in that an air suction device is arranged in the exhaust device and is connected with the exhaust pipeline.
10. A process method of the carbon dioxide deflagration pulse type pressurization rock breaking device disclosed by claim 1, wherein the process method comprises the following steps:
the method comprises the following steps: adding deflagration raw materials into the raw material storage bin and grinding into powder;
step two: controlling a motor to rotate the impeller to open a storage bin switch valve, and pressing the powdery deflagration raw material into the deflagration bin; closing the storage bin switching valve;
step three: triggering the deflagration raw material to deflagrate and press through an ignition device, and flushing the generated transient high-pressure gas into the blasted part through a pressure-resistant pipeline to realize first fracturing;
step four: opening an exhaust device to exhaust residual gas after deflagration, introducing the residual gas into the raw material storage bin through a high-pressure pump, maintaining the pressure in the bin, and closing the exhaust device;
step five: and opening the storage bin switch valve again, repeating the third step to the fourth step, and triggering next detonation stamping until fracturing of the blasted part is completed.
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