Active and passive complete absorption plugging device suitable for deep hole blasting harmful gas

Abstract

The utility model relates to the technical field of mine hole sealing, in particular to a complete set of active and passive absorption plugging device suitable for deep hole blasting harmful gas, which comprises a grouting pipe, a connecting pipe and two supporting pipes, the outer end of each supporting pipe is sleeved with a bag, the bags are fixed at the outer ends of the supporting pipes through fixing parts, and the grouting pipe is connected with the connecting pipe. The connecting pipe is fixed between the two supporting pipes, and the grouting pipe is fixed to the outer end of one supporting pipe. The assembled device is placed in a rock drill hole, the device is fixed in the drill hole through a steel hook claw, grouting is conducted on the two bags through a grouting pipe, the pressure is increased to 0.8 MPa, the explosion valve in the bag close to the hook claw side is opened, the pressure is increased to 1.2 MPa, the explosion valve in the bag close to the grouting pipe side is opened, and after expansion, the device is fastened on the inner wall of the rock drill hole. And grouting is continued, the pressure is increased to 1.6 MPa, grouting is started in the inner-section hole sealing space, grouting is stopped until the inner-section hole sealing space is filled with the grout, and the drilled hole is plugged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hole sealing technology for mining, in particular to a passive complete set of harmful gas absorption and sealing device suitable for deep hole blasting. BACKGROUND

[0002] In the mining work, after deep hole blasting, toxic and harmful gases will enter the working face through fissures, which will pose a great threat to the life safety of people in the mine, so miners need to wear a certain carbon monoxide treatment device and carry a certain carbon monoxide detection device to avoid carbon monoxide poisoning.

[0003] At present, the vacancy of carbon monoxide treatment and the traditional "two plugging and one injection" grouting pressure deficiency or hole sealing section prone to blank section or grouting not dense situation cannot tightly seal the cracks around the drill hole. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a passive complete set of harmful gas absorption and sealing device suitable for deep hole blasting to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a passive complete set of harmful gas absorption and sealing device suitable for deep hole blasting, comprising: a grouting pipe, a connecting pipe and two support pipes, the outer end of each support pipe is sleeved with a bag, the bag is fixed on the outer end of the support pipe through a fixing component, the connecting pipe is fixed between the two support pipes, and the grouting pipe is fixed on the outer end of one of the support pipes;

[0006] The outer end of the other support pipe is provided with a container one through a threaded pipe, the outer end of the container one is provided with a hook and a container two through a fixing rod, and the outer end of the container two is fixedly provided with a mining water gel explosive.

[0007] Preferably, the grouting pipe, the connecting pipe and the support pipe are threadedly connected, and the connecting pipe and the support pipe are fixedly provided with a blasting valve.

[0008] Preferably, the end of the grouting pipe away from the support pipe is fixedly provided with a grouting port.

[0009] Preferably, the fixing component comprises a bag opening, a groove and an elastic fixing block, the bag opening is fixedly installed on the side wall of the left and right ends of the bag, the groove is opened on the outer wall of the left and right ends of the support pipe, and the bag opening is sleeved on the outer wall of the support pipe and located in the groove.

[0010] Preferably, the elastic fixing block is fixed on the outer end of the support pipe through a bolt and located outside the bag opening.

[0011] Preferably, the container one is provided with a toxic and harmful reaction agent.

[0012] Preferably, one end of the fixing rod is fixedly connected to one end of container one, and the other end is fixedly connected to one end of container two. A limit ring is fixedly installed on one outer wall of the fixing rod, a round sleeve is fitted on the outer end of the fixing rod, and a nut is threadedly connected to the outer end of the fixing rod. One end of the round sleeve contacts the limit ring, and the other end contacts the nut.

[0013] Preferably, the hooks are provided in a plurality of units and are evenly inclined and fixed on the outer wall of the circular sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By placing the assembled device inside a rock borehole and fixing it inside the borehole with steel hooks, the device is blasted by mineral water-based explosives. Under high temperature, the ferric oxide powder in container two reacts with carbon monoxide to convert into carbon dioxide. If there are toxic or harmful gases, the reaction is incomplete and they will react with the carbon dioxide in container one.

[0016] The assembled device is placed inside a rock borehole and secured in place by steel hooks. Grout is injected into two bags through a grouting pipe. When the pressure reaches 0.8 MPa, the burst valve in the bag near the hook opens. When the pressure reaches 1.2 MPa, the burst valve in the bag near the grouting pipe opens, expanding and securing itself to the inner wall of the rock borehole, thus sealing the inner sealing space. Grouting continues until the pressure reaches 1.6 MPa, at which point grouting begins in the inner sealing space. Grouting stops when the inner sealing space is completely filled, thus sealing the borehole. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Fig. 2 This is an exploded view of the present invention;

[0019] Fig. 3 This is a schematic diagram of the unfolded bag and support tube of this utility model;

[0020] Fig. 4 This is a schematic diagram of the connecting pipe and threaded pipe of this utility model.

[0021] In the diagram: 1. Grouting pipe; 2. Grouting port; 3. Connecting pipe; 4. Bag; 5. Support pipe; 6. Groove; 7. Bag opening; 8. Elastic fixing block; 9. Container one; 10. Threaded pipe; 11. Fixing rod; 12. Limiting ring; 13. Round sleeve; 14. Hook; 15. Nut; 16. Container two; 17. Mining water-based explosive. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figs. 1 to 4 This utility model provides a technical solution: a complete set of active and passive absorption and sealing device for harmful gases in deep hole blasting, comprising: a grouting pipe 1, a connecting pipe 3, and two support pipes 5. Each support pipe 5 has a bag 4 sleeved on its outer end. The bag 4 is fixed to the outer end of the support pipe 5 by a fixing component, which includes a bag opening 7, a groove 6, and an elastic fixing block 8. The bag opening 7 is fixedly installed on the side walls of the left and right ends of the bag 4. The bag opening 7 and the bag 4 are integrally formed. The groove 6 is opened on the outer wall of the left and right ends of the support pipe 5. The bag opening 7 is sleeved on the outer wall of the support pipe 5 and is located in the groove 6. The bag opening 7 is made of rubber and is fixed in the groove 6 by its own elastic contraction force to seal it. The elastic fixing block 8 is fixed to the outer end of the support pipe 5 by bolts and is located outside the bag opening 7, thereby firmly fixing the bag opening 7.

[0024] The connecting pipe 3 is fixed between the two supporting pipes 5. The left and right ends of the connecting pipe 3 are threaded to the outer wall of the supporting pipe 5. The grouting pipe 1 is threaded to the outer end of one of the supporting pipes 5. The other end of the grouting pipe 1 is fixedly installed with a grouting port 2. Grouting can be injected into the grouting pipe 1, the supporting pipe 5 and the connecting pipe 3 through the grouting port 2.

[0025] The outer end of another support pipe 5 is connected to container 9 and container 16 via threaded pipe 10. Container 16 is fixedly connected to the outer end of mine water-based explosive 17. Container 19 is fixedly connected to one end of threaded pipe 10, which is threaded to the outer wall of support pipe 5. Container 19 is fixedly connected to the other end of fixed rod 11. Both container 9 and container 16 contain toxic and hazardous reactive agents, namely ferric oxide powder. Grouting pipe 1, connecting pipe 3, and support pipe 5 are all threadedly connected. Both connecting pipe 3 and support pipe 5 are fixedly connected to blasting valves. After the blasting valves blast, they generate high temperatures and shatter container 9. The ferric oxide powder inside container 9 reacts with carbon monoxide at high temperatures to convert into carbon dioxide.

[0026] A hook 14 is installed on the outer end of container 9 via a fixing rod 11. One end of the fixing rod 11 is fixedly connected to one end of container 9, and the other end is fixedly connected to one end of container 16. A limit ring 12 is fixedly installed on the outer wall of the fixing rod 11. A circular sleeve 13 is fitted on the outer end of the fixing rod 11. Several hooks 14 are provided and are evenly inclined and fixed on the outer wall of the circular sleeve 13. A nut 15 is threadedly connected to the outer end of the fixing rod 11. One end of the circular sleeve 13 contacts the limit ring 12, and the other end contacts the nut 15 to fix the hooks 14. The assembled device is placed in the rock borehole and fixed in the borehole by the steel hooks 14.

[0027] The preset pressure of the burst valve between the two bladders 4 is 1.6 MPa; the preset pressure of the burst valve inside the bladder 4 near the grouting pipe 1 is 1.2 MPa; and the preset pressure of the burst valve inside the bladder 4 near the hook 14 is 0.8 MPa. The bladders 4 are used to seal the borehole by expanding through internal grouting, and the burst valve between the two bladders 4 is used to tightly seal the cracks around the borehole.

[0028] When this device is in operation, during mining operations, after deep-hole blasting, toxic and harmful gases will enter the working face through cracks, posing a great threat to the life safety of people working in the mine. The harmful gas is mainly carbon monoxide. Therefore, miners need to wear certain carbon monoxide treatment devices when going down into the mine. By placing the assembled device in the rock borehole and fixing the device in the borehole with steel hook 14, after the mine water-based explosive 16 is detonated, the ferric oxide powder in container 2 16 reacts with carbon monoxide at high temperature and is converted into carbon dioxide. If the reaction of toxic and harmful gases is insufficient, it will be reacted by container 1 9.

[0029] Grout is injected into the two bags 4 through the grouting pipe 2. When the pressure rises to 0.8 MPa, the burst valve in the bag 4 near the hook 14 opens. When the pressure rises to 1.2 MPa, the burst valve in the bag 4 near the grouting pipe 1 opens. After expanding, it is tightened against the inner wall of the rock borehole, thus sealing and forming an inner sealing space. Grouting continues until the pressure rises to 1.6 MPa. Grouting of the inner sealing space begins until the grout fills the inner sealing space. Grouting stops when the burst valve bursts and generates high temperature, which breaks the container 9. The ferric oxide powder in the container 9 reacts with carbon monoxide at high temperature and is converted into carbon dioxide.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A passive-active complete set of harmful gas absorption and plugging device suitable for deep hole blasting, characterized in that: The utility model provides a mine water gel explosive injection device, which comprises a grouting pipe (1), a connecting pipe (3) and two support pipes (5), the outer end of each support pipe (5) is sleeved with a bag (4), the bag (4) is fixed on the outer end of the support pipe (5) through a fixing component, the connecting pipe (3) is fixed between the two support pipes (5), and the grouting pipe (1) is fixed on the outer end of one of the support pipes (5). The outer end of the other support pipe (5) is provided with a container one (9) through a threaded pipe (10), the outer end of the container one (9) is provided with a hook (14) and a container two (16) through a fixing rod (11), and the outer end of the container two (16) is fixedly provided with a mine water gel explosive (17). The grouting pipe (1), the connecting pipe (3) and the support pipe (5) are all screw-connected, and the connecting pipe (3) and the support pipe (5) are both fixedly provided with a blasting valve.

2. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 1, characterized in that: The grouting pipe (1) is fixedly provided with a grouting port (2) at the end away from the support pipe (5).

3. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 1, characterized in that: The fixing component comprises a bag opening (7), a groove (6) and an elastic fixing block (8), the bag opening (7) is fixedly installed on the side wall of the left and right two ends of the bag (4), the groove (6) is arranged on the outer wall of the left and right two ends of the support pipe (5), and the bag opening (7) is sleeved on the outer wall of the support pipe (5) and located in the groove (6).

4. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 1, characterized in that: The elastic fixing block (8) is fixed on the outer end of the support pipe (5) and located outside the bag opening (7) through bolts.

5. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 4, characterized in that: The container one (9) is provided with toxic and harmful reaction agents.

6. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 1, characterized in that: One end of the fixing rod (11) is fixedly connected with one end of the container one (9), the other end is fixedly connected with one end of the container two (16), a limiting ring (12) is fixedly installed on the outer wall of the fixing rod (11), a round sleeve (13) is sleeved on the outer end of the fixing rod (11), a nut (15) is screw-connected on the outer end of the fixing rod (11), one end of the round sleeve (13) is in contact with the limiting ring (12), and the other end is in contact with the nut (15).

7. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 1, characterized in that: The hook (14) is provided with a plurality of hooks, which are uniformly and obliquely fixed on the outer wall of the round sleeve (13).

8. The active and passive complete absorption and plugging device for harmful gas in deep hole blasting according to claim 7, characterized in that: ​

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