Gas blasting storage tank, blasting system and blasting method

Abstract

The invention discloses a gas blasting storage tank, a blasting system and a blasting method, and belongs to the technical field of blasting engineering.The gas blasting storage tank comprises an outer tank and an inner tank, a filling head is arranged at one end of the outer tank, a filling opening is formed in the other end of the outer tank, and a blasting area is arranged on the side wall of the outer tank in the circumferential direction; a blasting opening and a blasting piece covering the blasting opening in a sealing mode are arranged in the blasting area. The inner tank is used for filling a packaging type exciting agent, one end of the inner tank is provided with an extending opening, the other end of the inner tank is fixedly provided with a rotating head rotationally connected with the filling opening, and the side wall of the inner tank is provided with a release opening. The blasting system comprises an excitation device, an oxygenation device and a gas blasting storage tank. The blasting method comprises the following steps: S1, drilling a blast hole; s2, the orientation of the release opening is adjusted, the release opening is plugged into the blast hole, and a blasting area corresponding to the release opening faces the hole wall, located in the blasting direction, of the blast hole; s3, backfilling sandy soil; s4, oxygenation is carried out; and S5, blasting. The release openings correspond to blasting areas in different directions, blasting energy can be guided, directional blasting is achieved, and the energy utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of blasting engineering, and particularly to a gas blasting storage tank, a blasting system and a blasting method. Background Art

[0002] In the field of blasting engineering, traditional explosive blasting technology has long had serious safety and environmental problems. The storage and transportation links of explosives need to be strictly controlled. Any carelessness may lead to catastrophic accidents. More prominently, the high-energy shock wave generated during detonation diffuses isotropically, damaging buildings and infrastructure in non-blasting areas around, and is accompanied by a large amount of dust and harmful gases polluting the air, endangering the ecological environment and the health of personnel.

[0003] In recent years, although gas blasting technology has solved the risk problems of storage and transportation, gas blasting will also have the problem of high-energy shock wave diffusing around. This not only causes the buildings in non-blasting areas to be impacted, but also the impact energy is lost in non-target areas, resulting in insufficient blasting effect in the target area. Therefore, there is an urgent need for a gas blasting technology that can perform directional blasting and achieve precise control of the energy vector to improve the energy utilization rate. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems, and provide a gas blasting storage tank, a blasting system and a blasting method. The rotating head can drive the inner tank to rotate inside the outer tank, so that the release port of the inner tank corresponds to the blasting ports in different orientations of the blasting areas of the outer tank, thereby guiding the blasting energy, achieving directional blasting and improving the energy utilization rate.

[0005] To achieve the above object, the present invention provides the following solution: The present invention discloses a gas blasting storage tank, including an outer tank and an inner tank sleeved inside the outer tank. The inner wall of the outer tank fits with the outer wall of the inner tank. One end of the outer tank is provided with a filling head, and the filling head is provided with an excitation port and an air inlet. The excitation port is used for the excitation head of the excitation device to be hermetically inserted, and the air inlet is used for the oxygen filling pipeline to be hermetically inserted. The other end of the outer tank is provided with a filling port for filling the inner tank. The side wall of the outer tank is circumferentially spaced with blasting areas, and each blasting area is provided with a blasting port and a blasting film that can rupture under a preset impact pressure. The blasting film hermetically covers the blasting port. The inner tank is used for filling encapsulated excitant. One end of the inner tank is provided with an insertion port for the excitation head and the oxygen filling pipeline to extend into. The other end of the inner tank is fixed with a rotating head extending out of the filling port. The rotating head is coaxially and rotatably connected to the filling port. One release port is provided on the side wall of the inner tank, and the projection of the blasting area on the inner tank is located on the rotation path of the release port.

[0006] Preferably, the rotating head includes a ratchet wheel and a rotating disk. The ratchet wheel is coaxially and fixedly connected to one side of the rotating disk. On the other side of the rotating disk, a threaded connection head and an annular groove are coaxially provided. One end of the inner tank away from the insertion port is provided with a threaded connection port. The threaded connection head is threadedly connected to the threaded connection port. The annular groove is used for the filling port to be embedded, and a sealing ring is filled between the filling port and the annular groove.

[0007] Preferably, the release port is a rectangular port.

[0008] Preferably, it includes at least two blasting areas, at least two of the blasting ports are provided in the blasting areas. The blasting ports are strip-shaped ports extending along the axial direction of the outer tank, and the edges of the strip-shaped ports are chamfered or rounded.

[0009] Preferably, the bursting disc is a metal sheet.

[0010] Preferably, the filling head is threadedly connected to the outer tank.

[0011] A blasting system is also disclosed, which includes an excitation device, an oxygen filling device and the above-mentioned gas blasting storage tank. The excitation head of the excitation device extends into the insertion port. The oxygen filling device includes an oxygen filling pipeline, a pressure sensor and a flow meter. The flow meter is arranged on the oxygen filling pipeline, and the pressure sensor is arranged on the inner wall of the inner tank of the gas blasting storage tank.

[0012] Preferably, the excitation device is an electromagnetic induction heating ignition device. The electromagnetic induction heating ignition device includes a high-frequency power generator and an aluminum rod. The aluminum rod extends into the insertion port. The power output line of the high-frequency power generator is electrically connected to the aluminum rod. The encapsulated excitant includes a plastic package and a filler filled in the plastic package. The filler includes cotton impregnated with potassium perchlorate and aluminum powder.

[0013] A blasting method is also disclosed, which adopts the above-mentioned blasting system and includes the following steps:

[0014] S1. Drill a blast hole;

[0015] S2. Rotate the inner tank through the rotating head of the gas blasting storage tank to adjust the orientation of the release port on the inner tank, so that the release port corresponds to one of the blasting areas of the outer tank. Then insert the gas blasting storage tank into the blast hole, and the blasting area on the outer tank corresponding to the release port faces the hole wall of the blast hole in the blasting direction;

[0016] S3. Backfill the blast hole with sand and soil;

[0017] S4. Turn on the oxygenation device and oxygenate the inner tank through the oxygenation pipeline. During the oxygenation process, monitor the changes in pressure and flow rate in real time through the pressure sensor and flow meter. When the set oxygenation time or the set oxygenation pressure is reached, turn off the oxygenation device to stop oxygenation;

[0018] S5. Start the excitation device, and the excitation head triggers the reaction of the excitant to conduct blasting.

[0019] Preferably, in step S5, adjust the applied power of the high-frequency power generator according to the actual pressure monitored by the pressure sensor.

[0020] The present invention has achieved the following technical effects compared with the prior art:

[0021] In the present invention, by rotating the rotating head located outside the outer tank, the inner tank can be driven to rotate inside the outer tank, so that the release port on the side wall of the inner tank corresponds to the blasting ports in different orientations of the blasting areas of the outer tank. After the encapsulated excitant combustion is ignited by the excitation head of the excitation device, the encapsulated excitant will ignite the oxygen in the inner tank, generating an explosion impact force, which will crack the blasting sheet in the blasting area corresponding to the front of the release port. The blasting port of this blasting area is exposed, and the gas and impact energy in the tank are vented outwards through the exposed blasting port, thereby weakening the impact on other blasting areas, so that the blasting sheets in other blasting areas will not crack, and the subsequent impact force will only leak out through the already exposed blasting port, realizing the directional release of the impact energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of the blasting system in the embodiment of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the outer tank of the gas blasting storage tank in the embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the outer tank of the gas blasting storage tank in another perspective in the embodiment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of the inner tank of the gas blasting storage tank in the embodiment of the present invention;

[0027] Figure 5 It is a schematic rear view structural diagram of the rotating head in the embodiment of the present invention;

[0028] Figure 6 This is a front view structural schematic diagram of the rotating head in the embodiment of the present invention.

[0029] Explanation of reference numerals: 1. Outer tank; 2. Inner tank; 3. Filling head; 4. Oxygen filling pipeline; 5. Excitation device; 6. Blasting port; 7. Blasting film; 8. Encapsulated excitant; 9. Release port; 10. Rotating head; 11. Ratchet; 12. Rotating disk; 13. Threaded connection head; 14. Annular groove; 15. Aluminum rod; 16. Power output line. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] The purpose of the present invention is to provide a gas blasting storage tank, a blasting system and a blasting method to solve the problems existing in the prior art. By rotating the rotating head located outside the outer tank, the inner tank can be driven to rotate inside the outer tank, so that the release port on the side wall of the inner tank corresponds to the blasting ports in different positions of the blasting areas of the outer tank. After the encapsulated excitant burns and is ignited by the excitation head of the excitation device, the encapsulated excitant will ignite the oxygen in the inner tank, generating an explosion impact force, which will crack the blasting film in the blasting area corresponding to the front of the release port, and the blasting port of this blasting area will be exposed. The gas and impact energy in the tank will be vented outwards through the exposed blasting port, thereby weakening the impact on other blasting areas, so that the blasting films in other blasting areas will not crack, and the subsequent impact force will only leak out through the already exposed blasting port, realizing the directional release of the impact energy.

[0032] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0033] Embodiment 1

[0034] As Figures 1 to 6As shown in the figure: This embodiment provides a gas blasting storage tank, which includes an outer tank 1 and an inner tank 2; the inner tank 2 is sleeved inside the outer tank 1, and the outer wall of the inner tank 2 fits against the inner wall of the outer tank 1. One end of the outer tank 1 is provided with a filling head 3, and the filling head 3 is provided with an excitation port and an air inlet. The excitation port is used for the excitation head of the excitation device 5 to be hermetically inserted. The air inlet is used for the oxygen filling pipeline 4 to be hermetically inserted. The other end of the outer tank 1 is provided with a filling port, and the inner tank 2 can be inserted and pulled out through this filling port. At least two blasting areas are provided on the side wall of the outer tank 1, and the blasting areas are evenly spaced along the circumferential direction of the side wall of the outer tank 1. A blasting port 6 and a bursting disc 7 are provided in the blasting area. The bursting disc 7 in one blasting area hermetically covers the blasting port 6 in one blasting area. The bursting disc 7 can rupture under a preset impact pressure, so as to expose the blasting port 6 and release the impact energy. The inner tank 2 is used for filling the encapsulated initiator 8. One end of the inner tank 2 is provided with an insertion port, and the insertion port is used for the excitation head of the excitation device 5 and the oxygen filling pipeline 4 to extend into the inner part of the inner tank 2. The other end of the inner tank 2 is installed with a rotating head 10. The rotating head 10 extends out of the filling port of the outer tank 1, and the rotating head 10 is coaxially and rotatably connected to the filling port. Rotating the rotating head 10 can drive the inner tank 2 to rotate together. A release port 9 is provided on the side wall of the inner tank 2. The size of a single encapsulated initiator 8 needs to be larger than the release port 9 to prevent it from falling out of the release port 9. The projection of the blasting area on the inner tank 2 is located on the rotation path of the release port 9. Rotating the inner tank 2 can make the release port 9 correspond to the blasting ports 6 of the blasting areas in different orientations of the outer tank 1. After the excitation head of the excitation device 5 excites the combustion of the encapsulated initiator 8, the encapsulated initiator 8 will ignite the oxygen in the inner tank 2, generating an explosion impact force. The explosion impact force will crack the bursting disc 7 of the blasting area corresponding to the front of the release port 9, and the blasting port 6 of this blasting area will be exposed, so that the gas and impact energy in the outer tank 1 are vented outwards through the exposed blasting port 6, and the bursting discs 7 of other blasting areas will not crack, realizing the directional release of the impact energy.

[0035] In one embodiment, both the outer tank 1 and the inner tank 2 are made of composite fiber materials, such as high-performance carbon fiber-reinforced polymer and aramid fiber hybrid composite materials. This material combines the high strength and high modulus characteristics of carbon fiber and the impact resistance and wear resistance of aramid fiber, and has excellent comprehensive mechanical properties. Its high strength ensures that it can withstand the huge force of high-pressure gas. The lightweight design is convenient for transportation and installation, and the good high-pressure resistance performance ensures the use safety. Its high strength ensures that it can withstand the huge force of high-pressure gas. The lightweight design is convenient for transportation and installation, and the good high-pressure resistance performance ensures the use safety. The tank body is divided into two inner and outer layer structures of the outer tank 1 and the inner tank 2. The inner tank 2 is used for storing gas, and the outer tank 1 plays a role of protection and support. The two layers are closely combined, effectively enhancing the overall strength and stability of the tank body.

[0036] In one embodiment, the rotating head 10 includes a ratchet wheel 11 and a rotating disk 12. The ratchet wheel 11 is coaxially and fixedly connected to one side of the rotating disk 12. On the other side of the rotating disk 12, a threaded connection head 13 and an annular groove 14 are coaxially provided. The threaded connection head 13 is located in the middle of the annular groove 14. One end of the inner tank 2 away from the insertion port is provided with a threaded connection port, and the threaded connection head 13 is threadedly connected to the threaded connection port. The annular groove 14 is used for the filling port of the outer tank 1 to be fitted. A sealing ring is filled between the filling port and the annular groove 14 to ensure the seal between the outer tank 1 and the rotating disk 12. By using a tool to clamp the outer tank 1 and then using the tool to rotate the ratchet wheel 11, the outer tank 1 can be rotated relative to the rotating disk 12, realizing the relative rotation of the inner tank 2 and the outer tank 1, and adjusting the orientation of the release port 9 to make it correspond to one of the blasting areas. During installation, a sealing ring can be pre-inserted into the annular groove 14, and the threaded connection head 13 is screwed into the threaded connection port of the inner tank 2. During the screwing process, the filling port of the outer tank 1 will gradually be inserted into the annular groove 14 and finally pressed against the sealing ring in the annular groove 14 to achieve sealing.

[0037] In one embodiment, the ratchet wheel 11, the rotating disk 12 and the threaded connection head 13 are integrally made of high-strength alloy steel. After precision machining and heat treatment, they have good mechanical properties and wear resistance.

[0038] In one embodiment, the release port 9 is a rectangular port with rounded corners.

[0039] In one embodiment, there are at least two blasting areas. At least two blasting ports 6 are provided in the blasting areas. The blasting ports 6 are strip-shaped ports extending along the axial direction of the outer tank 1, and the strip-shaped ports are arranged at intervals along the circumferential direction of the outer tank 1. The opening edges of the strip-shaped ports are chamfered or rounded to reduce stress concentration and ensure that the gas can pass through smoothly when released and form a directional air flow.

[0040] Preferably, there are two blasting areas, and the two blasting areas are symmetrically arranged along the axis of the outer tank 1. Three blasting ports 6 are provided in each blasting area, and the three blasting ports 6 are arranged at intervals along the circumferential direction of the outer tank 1.

[0041] In one embodiment, the bursting disc 7 is a metal sheet. Such as a high-strength metal thin sheet like nickel-based alloy or titanium alloy. Its thickness and material are strictly calculated and experimentally verified to ensure reliable rupture under a predetermined pressure and achieve precise energy release. The bursting disc 7 is firmly attached to the outer wall of the outer tank 1 through a special welding or bonding process to ensure the sealing performance.

[0042] In one embodiment, the filling head 3 is threadedly connected to the outer tank 1. That is, one end of the outer tank 1 away from the filling port is provided with a threaded port, and the filling head 3 is sealingly threadedly connected in the threaded port.

[0043] In one embodiment, the filling head 3 is made of high-strength sealing material and processed with precision machining technology to ensure the sealing performance and reliability of the connection part. When tightening the filling head 3, it is tightened multiple times in accordance with the specified torque sequence to prevent leakage caused by uneven local stress.

[0044] Embodiment 2

[0045] As Figures 1 to 6 shown: This embodiment provides a blasting system, including an excitation device 5, an oxygen filling device, and the gas blasting storage tank in Embodiment 1. The excitation head of the excitation device 5 extends into the insertion opening of the inner tank 2. The oxygen filling device includes an oxygen filling pipeline 4, a pressure sensor, and a flowmeter. The flowmeter is arranged on the oxygen filling pipeline 4, and the pressure sensor is arranged on the inner wall of the inner tank 2 of the gas blasting storage tank. The flowmeter is used to monitor the gas filling amount in real time, and the pressure sensor is used to monitor the air pressure in the inner tank 2 in real time.

[0046] In one embodiment, the excitation device 5 is an electromagnetic induction heating ignition device. The electromagnetic induction heating ignition device includes a high-frequency power generator and an aluminum rod 15. The aluminum rod 15 extends into the insertion opening of the inner tank 2, and the power output line 16 of the high-frequency power generator is electrically connected to the aluminum rod 15. The encapsulated excitant 8 includes a plastic seal and the filling material filled in the plastic seal. The filling material includes cotton impregnated with potassium perchlorate and aluminum powder. Note: The high-frequency power generator uses existing equipment, and its circuit design is based on advanced inverter technology. High-power density and high-efficiency power electronic devices, such as insulated gate bipolar transistors (IGBTs), are selected. Through a carefully designed control circuit, it can stably output high-frequency alternating current in the frequency range of 10 kHz to 100 kHz, and the power can be flexibly adjusted between several kilowatts and dozens of kilowatts according to factors such as the scale of the blasting project and the properties of the rock.

[0047] Embodiment 3

[0048] This embodiment provides a blasting method, which uses the blasting system in Embodiment 2 and includes the following steps:

[0049] S1. Drill blast holes, such as drilling blast holes in the formation or surrounding rock;

[0050] S2. Rotate the inner tank 2 through the rotating head 10 of the gas blasting storage tank to adjust the orientation of the release port 9 on the inner tank 2 so that the release port 9 corresponds to one of the blasting areas of the outer tank 1, and then insert the gas blasting storage tank into the blast hole. The blasting area of the outer tank 1 corresponding to the release port 9 faces the hole wall of the blast hole in the blasting direction;

[0051] S3. Backfill the blast hole with sand;

[0052] S4. Turn on the oxygenation device and oxygenate the interior of the inner tank 2 through the oxygenation pipeline 4. During the oxygenation process, monitor the pressure and flow rate changes in real time through the pressure sensor and flow meter. When the set oxygenation time or the set oxygenation pressure is reached, turn off the oxygenation device to stop oxygenation;

[0053] S5. Start the excitation device 5, and the excitation head triggers the reaction of the excitant to conduct blasting.

[0054] In one embodiment, a blasting system with an electromagnetic induction heating ignition device is adopted. In step S5, according to the actual pressure monitored by the pressure sensor, adjust the magnitude of the applied power of the high-frequency power generator.

[0055] In one embodiment, in step S1, select a suitable drilling device according to the on-site field geological conditions. For softer geological conditions, a Luoyang shovel can be used for manual excavation. During operation, pay attention to keeping the hole wall vertical and flat. For harder rock formations, a professional drilling machine is used. During the drilling process, monitor parameters such as the drilling depth, verticality, and hole diameter in real time, and use equipment such as a ground penetrating radar or an inclinometer for auxiliary measurement to ensure that the blast holes meet the design requirements.

[0056] In one embodiment, after the blast holes are completed in step S2, rotate the ratchet 11 through a professional tool. According to the position of the blasting target and the expected blasting direction, during the adjustment process, use an angle measuring instrument for real-time monitoring to ensure that the angle error is controlled within a very small range. Carefully place the device into the blast hole, and pay attention to avoiding collision with the hole wall during placement to prevent device damage or angle deviation.

[0057] In one embodiment, when backfilling with sand and soil in step S3, adopt the method of layered compaction, and control the backfilling thickness of each layer within a certain range to ensure the compactness of the backfilled soil, effectively preventing the leakage of blasting energy and the generation of flying rocks.

[0058] In one embodiment, before oxygenation, check the sealing performance of the oxygenation pipeline 4 and the gas blasting storage tank to ensure no leakage. Oxygenate according to the predetermined oxygenation pressure and flow rate curve. During the oxygenation process, monitor the pressure and flow rate changes in real time. When the set oxygenation time or pressure is reached, the oxygenation device stops oxygenation.

[0059] In one embodiment, in step S5, before starting the electromagnetic heating induction ignition device, check the connection status of the device and the safety of the surrounding environment again. After confirming that it is correct, send an ignition command. The ignition device first applies a high-frequency alternating current to the induction coil to generate an alternating magnetic field in the pipeline, causing the aluminum rod 15 to heat up rapidly, triggering the reaction of the excitant, and then igniting the gas.

[0060] In one embodiment, before step S1, it further includes step S0: Assemble the gas blasting storage tank:

[0061] First, fill the encapsulated activator 8 through the threaded connection port of the inner tank 2. When filling the encapsulated activator 8, ensure that the inner tank 2 is filled but not compacted to facilitate the filling of oxygen. Then, assemble the inner tank 2 with the rotating head 10: clean and lubricate the threaded connection port and the threaded connection head 13 of the inner tank 2 to ensure smooth connection. Use a special tool to tightly screw the threaded connection port and the threaded connection head 13 together. During the screwing process, use a torque wrench to control the torque to ensure firm connection and accuracy meeting the requirements. Then, carefully place the assembled components into the outer tank 1, ensuring that the gap between the outer tank 1 and the inner tank 2 is uniform and there is no jamming phenomenon. Then, connect the excitation device 5 and the oxygen filling pipeline 4 to the outer tank 1 through the filling head 3. Then, fix the bursting disc 7 in front of the outer tank 1. Clean and degrease the bursting area of the bursting disc 7 and the outer tank 1 to improve the bonding or welding effect. Use a high-strength adhesive to firmly attach the bursting disc 7 to the bursting area of the outer tank 1. After welding or bonding, conduct strict sealing detection, such as helium leak detection method, to ensure no potential gas leakage hazard.

[0062] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A gas explosion storage tank, characterized in that: The invention comprises an outer tank and an inner tank sleeved in the outer tank, the inner wall of the outer tank is fitted with the outer wall of the inner tank, a filling head is provided at one end of the outer tank, an excitation port and an air inlet are provided on the filling head, the excitation port is used for the excitation head of the excitation device to be sealed and inserted, the air inlet is used for the oxygenation pipeline to be sealed and inserted, a filling port for the inner tank to be filled is provided at the other end of the outer tank, blasting zones are provided at circumferential intervals on the side wall of the outer tank, blasting ports and blasting discs which can rupture under a preset impact pressure are provided in the blasting zones, the blasting discs seal and cover the blasting ports; the inner tank is used for filling packaged exciter, an extension port is provided at one end of the inner tank for the excitation head and the oxygenation pipeline to be extended into, a rotating head extending out of the filling port is fixed at the other end of the inner tank, the rotating head is coaxially rotatably connected with the filling port, a release port is provided on the side wall of the inner tank, and the projection of the blasting zone on the inner tank is located on the rotation path of the release port.

2. The gas explosion storage tank according to claim 1, characterized in that: The rotating head includes a ratchet and a rotating disk, the ratchet is coaxially fixedly connected to one surface of the rotating disk, and a threaded connector and an annular groove are coaxially provided on the other surface of the rotating disk. A threaded connection port is provided at the end of the inner tank away from the extension port, and the threaded connector and the threaded connection port are threadedly connected. The annular groove is used for embedding the filling port, and a sealing ring is filled between the filling port and the annular groove.

3. The gas explosion storage tank according to claim 1, characterized in that: The release opening is a rectangular opening.

4. The gas explosion storage tank according to claim 3, characterized in that: It comprises at least two blasting zones, wherein at least two blasting openings are arranged in the blasting zones, and the blasting openings are strip openings extending along the axial direction of the outer tank, and the edges of the strip openings are chamfered or rounded.

5. The gas explosion storage tank according to claim 1, characterized in that: The bursting disc is a metal disc.

6. The gas explosion storage tank according to claim 1, characterized in that: The filling head is threadedly connected to the outer tank.

7. A blasting system, characterized in that: It comprises an excitation device, an oxygenation device and a gas explosion storage tank as described in any one of claims 1 to 6, wherein the excitation head of the excitation device extends into the insertion port, the oxygenation device comprises an oxygenation pipeline, a pressure sensor and a flow meter, the flow meter is arranged on the oxygenation pipeline, and the pressure sensor is arranged on the inner wall of the inner tank of the gas explosion storage tank.

8. A blasting system according to claim 7, characterized in that: The excitation device is an electromagnetic induction heating ignition device, which includes a high-frequency power generator and an aluminum rod. The aluminum rod extends into the extension port, and the power output line of the high-frequency power generator is electrically connected to the aluminum rod. The packaged igniter includes a plastic cover and a filler filled in the plastic cover, and the filler includes cotton impregnated with potassium perchlorate and aluminum powder.

9. A blasting method, characterized in that: The blasting system according to claim 7 or 8 is used, comprising the following steps: S1, drilling blastholes; S2, rotating the inner tank by means of the rotating head of the gas blasting storage tank, adjusting the direction of the release port on the inner tank so that the release port corresponds to one of the blasting areas of the outer tank, and then inserting the gas blasting storage tank into the blast hole, with the blasting area on the outer tank corresponding to the release port facing the hole wall of the blast hole located in the blasting direction; S3, backfill the blasthole with sand; S4, turning on the oxygenation device, and oxygenating the inner tank through the oxygenation pipeline. During the oxygenation process, the pressure and flow changes are monitored in real time by the pressure sensor and the flow meter. When the set oxygenation time or the set oxygenation pressure is reached, the oxygenation device is turned off to stop oxygenation; S5. Start the excitation device, and the excitation head triggers the excitation agent to react and blast.

10. The blasting method according to claim 9, characterized in that: The blasting system as claimed in claim 8 is used, and in step S5, the power applied by the high-frequency power generator is adjusted according to the actual pressure monitored by the pressure sensor.

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