CN216198213U - Stope reserved air return shaft device - Google Patents
Stope reserved air return shaft device Download PDFInfo
- Publication number
- CN216198213U CN216198213U CN202122777643.5U CN202122777643U CN216198213U CN 216198213 U CN216198213 U CN 216198213U CN 202122777643 U CN202122777643 U CN 202122777643U CN 216198213 U CN216198213 U CN 216198213U
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- Prior art keywords
- air
- reserved
- stope
- cushion
- return shaft
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 42
- 229910052742 iron Inorganic materials 0.000 claims description 21
- 239000004746 geotextile Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 11
- 239000002002 slurry Substances 0.000 abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 238000005422 blasting Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000002360 explosive Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of ventilation and cooling in underground mining, in particular to a reserved return air shaft device for a stope. The utility model discloses a reserved air return shaft device for a stope, which comprises a fixing structure and an inflating and pressurizing structure; the fixed structure comprises a reserved air return shaft structure and an air cushion; the air cushion is arranged in the reserved air return shaft structure to seal the reserved air return shaft structure; the inflation pressurization structure comprises a high-pressure air source pipe, and the connecting pipeline is connected with the high-pressure air source pipe; the air cushion comprises a flange plate, and the flange plate is connected with a high-pressure air source pipe through a connecting pipeline; the air cushion is adopted to fill the inside of the reserved air return shaft structure, the inside of the reserved air return shaft structure is prevented from entering filling slurry, secondary treatment is not needed, and the mining efficiency and the manual safety can be greatly improved.
Description
Technical Field
The utility model relates to the technical field of ventilation and cooling in underground mining, in particular to a reserved return air shaft device for a stope.
Background
The ventilation system in the stope is improved in the underground mining process of the mine, the problems of poor air condition, high temperature and the like in the underground stope are solved, and a common mode is to construct a return air shaft for ventilation and cooling. There are two common structures for constructing the return air shaft: one is to construct a return air shaft in blasting operation, and the other is to reserve the return air shaft in a stope.
The construction of the air return shaft in blasting operation is to blast the air return shaft by using explosives and the like at a position above the air return shaft in the process of a stoping access, so that a large amount of explosives are consumed, and the blasted air return shaft is extremely irregular in shape and complex and unsafe in operation process; the other method is to reserve the air return shaft, namely after the route is recovered, a next layered air return shaft is constructed at the position of the previous layered air return shaft, and the space of the air return shaft is reserved by using a steel template, a wood template or a masonry brick wall and the like, and the space structure is used as the air return shaft;
however, the device cannot ensure the sealing performance, so that a large amount of slurry is poured into the gap reserved with the return air shaft structure in the filling process, secondary treatment is needed, and the mining efficiency is influenced; the poured slurry needs to be blasted and cleaned after being solidified, so that the cost is increased, the structural stability of the slurry is damaged, the stability of a surrounding filling body is influenced by blasting, and the danger is brought to the construction of personnel; the blasted coagulum mixes with the ore and causes ore depletion. Therefore, a reserved air return device for a stope is needed, which does not need to be filled with a large amount of slurry and does not need secondary treatment, reduces the stability influence on the surrounding filling body and enhances the construction safety.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior technical scheme, the utility model aims to provide the reserved air return shaft device for the stope, which does not need to pour a large amount of slurry and does not need secondary treatment, reduces the stability influence on the surrounding filling body and enhances the construction safety.
To achieve the above object, one or more embodiments of the present invention provide the following solutions:
the utility model discloses a reserved air return shaft device for a stope, which comprises a fixing structure and an inflating and pressurizing structure; the fixed structure comprises a reserved air return shaft structure and an air cushion; the air cushion is arranged in the reserved air return shaft structure to seal the reserved air return shaft structure; the inflation pressurization structure comprises a high-pressure air source pipe, and the connecting pipeline is connected with the high-pressure air source pipe; the air cushion comprises a flange plate, and the flange plate is connected with a high-pressure air source pipe through a connecting pipeline;
the technical scheme is that the reserved air return shaft structure comprises a cylindrical structure formed by a plurality of iron templates;
according to the further technical scheme, a fixed iron wire is arranged on the outer circumferential surface of the reserved air return shaft structure;
according to a further technical scheme, a bottom rib fixing ring is installed at the bottom of the reserved return air shaft structure;
according to a further technical scheme, geotextile and crushed ore are reserved in the air return shaft structure and positioned below the air cushion;
according to a further technical scheme, the air cushion comprises a circular cushion body, and a flange is arranged at the top of the circular cushion body;
according to a further technical scheme, an air pressure control valve is arranged on the flange plate and comprises an inflation valve, a quick pressure relief plug, a valve body, a closed rubber cushion and a pressure-bearing spring;
in the further technical scheme, an air cushion hook is arranged on the outer circular surface of the air cushion;
according to a further technical scheme, the connecting pipeline comprises a one-way valve, a hose, a barometer, a three-way valve and multiple channels which are connected in sequence; the multi-channel is connected with one end of the reducer pipe, and the other end of the reducer pipe is connected with the high-pressure air source pipe;
according to the further technical scheme, an inflation channel is arranged on the connecting pipeline and comprises an air delivery valve and a pressure reducing valve;
the beneficial effects of one or more technical schemes are as follows:
1. the air cushion is adopted to fill the inside of the reserved air return shaft structure, the inside of the reserved air return shaft structure is prevented from entering filling slurry, secondary treatment is not needed, and the mining efficiency and the manual safety can be greatly improved.
2. The reserved return air shaft has the advantages of high efficiency, labor saving and wide applicability, and overcomes the defects of secondary operation, complex process, insecurity requiring explosive blasting and high comprehensive cost of the traditional reserved return air shaft due to the existence of the air cushion.
3. The device does not need to consume explosive, and can reduce the total mining cost.
4. The device simple structure has improved the total time of total mining circulation, has improved the productivity.
5. Because the rock drilling blasting is avoided, the stability of the filling body and the return air shaft can be effectively maintained, and the safety of stope extraction operation is facilitated.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the air cushion inflation line connection;
FIG. 3 is a front view of the air mattress structure;
FIG. 4 is a top view of the air mattress structure;
FIG. 5 is a schematic view of a reserved air return structural frame;
FIG. 6 is a schematic view of an inflation channel configuration;
FIG. 7 is a schematic view of the air pressure control valve configuration;
in the figure, 1, a filled access, 2, a high-pressure air source pipe, 3, an air cushion lifting rope, 4, an upper layered air return well, 5, a lifting rib, 6, an iron formwork, 7, geotextile, 8, crushed ore, 9, an air cushion, 10, a flange plate, 11, a one-way valve, 12, a hose, 13, a barometer, 14, a three-way valve, 15, a multi-channel, 16, a reducer pipe, 17, an air cushion hook, 18, an inflation pipe interface, 19, a fixed iron wire, 20, a bottom rib fixing ring, 21, an inflation valve, 22, a pressure reducing valve, 23, an inflation valve, 24, a quick pressure relief plug, 25, a valve body, 26, a closed rubber cushion, 27 and a pressure-bearing spring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
Referring to fig. 1-7, the present invention discloses a reserved air return shaft device for a stope, which comprises a fixing structure and an inflating and pressurizing structure; the fixed structure comprises a reserved air return shaft structure and an air cushion; the air cushion is arranged in the reserved air return shaft structure to seal the reserved air return shaft structure; the inflation pressurization structure comprises a high-pressure air source pipe, and the connecting pipeline is connected with the high-pressure air source pipe; the air cushion comprises a flange plate, and the flange plate is connected with a high-pressure air source pipe through a connecting pipeline;
the high-pressure air source pipe 2 passes through the upper layered air return shaft 4 and is connected with the reducer pipe 16 to be connected with the inflation channel, and the other end of the inflation channel is connected with the flange plate 10 on the air cushion 9. The hanging bar 5 is connected with the iron template 6, and the iron template 6 is used for fixing the inflated 9 air cushion. The hanging bar 5 is connected with the iron formwork 6 and then fixed on the steel bar laid on the bottom plate of the filled access way 1 of the previous layer 4. The air cushion lifting rope 3 is connected with an air cushion hook 17 and fixed at the top of the upper layered return air shaft 4.
The end of the high-pressure wind source pipe 2 is provided with an inflation pipe interface 18. And the high-pressure air source pipe is inflated through the inflation pipe interface.
Wherein, the fixed structure comprises a reserved air return shaft structure and an air cushion 9; the reserved air return shaft structure comprises an iron template 6, a fixed iron wire 19 and a bottom rib fixing ring 20, wherein the iron template 6 is of a cylindrical structure, the fixed iron wire 19 is arranged in the circumferential direction of the iron template 6, and the bottom rib fixing ring 20 is arranged at the bottom of the iron template 6 and is installed on the iron template 6;
the reserved air return shaft is cylindrical and is formed by sequentially overlapping 4 pre-processed arc-shaped iron templates 6 up and down, and the iron templates 6 are fixed through screws. The reserved air return shaft structure has the following effects in the novel reserved air return shaft process:
A. fix and protect the air cushion 9. The air cushion 9 can be prevented from being extruded and damaged by the filling slurry in the filling process, and the air cushion 9 can be firmly fixed at the position of the reserved return air shaft;
B. and (5) supporting the well wall. In the environment of high ground stress, the well wall can be extruded and deformed, even destroyed completely, and the external structure can just play the effect of supporting the well wall.
The air cushion 9 is positioned in the fixed structure; the air cushion 9 comprises a circular cushion body, an air cushion hook 17, an air pressure control valve and a flange plate 10, the flange plate 10 is installed at the inflating end part of the air cushion 9, the air pressure control valve is arranged on the flange plate 10, a circle of air cushion hook 17 is arranged outside the circular cushion body of the air cushion 9, and the air cushion 9 is hung on the air cushion lifting rope 3 of the air cushion 9 through the air cushion hook 17. The bottom of the air cushion 9 is provided with geotextile 7 and crushed ore 8;
the air cushion 9 is made of high polymer materials, is telescopic and has high compressive strength, elasticity and air tightness, and after the air cushion 9 is filled with underground high-pressure air, the air cushion 9 can be telescopic to meet the design specification of the return air shaft. The size of the inflated gas cushion 9 can be processed according to the design requirements of underground mining. The expanded radial dimension of the air cushion 9 can meet the dimension of the reserved return air shaft. The axial length of the air cushion 9 can exceed the height of the access road of the return air shaft to be reserved, so that the air cushion is convenient to carry and erect as a core, and can be made of a high polymer material with lower weight. The air cushion 9 has the functions of: the space occupied by the air cushion 9 after being inflated and stretched is utilized to prevent the filling slurry from entering the external structure of the reserved return air shaft, the reserved return air shaft is formed for one time, secondary treatment is not needed to be carried out on the reserved return air shaft, and the defects of the conventional reserved return air shaft process are avoided; meanwhile, the method greatly improves the efficiency of the return air shaft, improves the overall efficiency of mining, improves the safety of site construction, and reduces the labor intensity of workers and the mining cost.
The reserved air return shaft structure mainly has the functions of protecting the shaft wall and preventing the air cushion 9 from being damaged; meanwhile, the air cushion 9 is used for stably reserving a return air well part structure and reserving a round return air well.
The inflation pressurization structure comprises a high-pressure air source pipe 2, an inflation channel, a pneumatic control valve and a connecting pipeline;
the inflation channel comprises a barometer 13, an air delivery valve 21 and a pressure reducing valve 22; the inflation channel is made of steel, is provided with a barometer 13 and can be used for monitoring the size of a high-pressure air source, and is provided with a plurality of air delivery valves 21 which can simultaneously inflate a plurality of air cushions 9. In a stope access, a plurality of return air shafts are required to be reserved sometimes, and in order to improve the efficiency of reserving the return air shafts, a plurality of air delivery valves 21 are arranged on the inflation channel, so that a plurality of air cushions 9 can be inflated simultaneously, and the inflation time of the air cushions 9 is greatly reduced. The inflation channel is connected with the high-pressure air source and an air pressure control valve of the air cushion 9, and the air pressure control valve is also used for adjusting the air pressure of the air cushion 9.
The air pressure control valve comprises an inflation valve 23, a quick pressure relief plug 24, a valve body 25, a closed rubber cushion 26 and a pressure-bearing spring 27; when the air pressure control valve is inflated, the pressure relief pin bolt is inserted into the valve, and when the air pressure control valve is deflated, the pressure relief pin bolt is pulled out of the valve; the inflation valve 23 mainly completes the air cushion 9 and the air discharging operation, when in inflation, the underground high-pressure air enters the air cushion 9 through the inflation valve 23 and the closed rubber cushion 26; the airtight rubber cushion 26 is made of elastic material, high-pressure air in the well can enter the air cushion 9, but the air in the air cushion 9 can not leak out from the inflation valve 23; the pressure-bearing spring 27 provides a supporting force for the closed rubber mat 26; the quick pressure relief plug 24 is used for preventing the air from leaking out after the air cushion 9 is inflated, and the quick pressure relief plug 24 can be pulled out when the air in the air cushion 9 needs to be discharged.
The connecting pipeline comprises a one-way valve 11, a hose 12, a three-way valve 14 and a multi-channel 15 which are connected in sequence; the multi-channel 15 is connected with one end of a reducer pipe 16, the other end of the reducer pipe 16 is connected with a high-pressure air source pipe 2, the multi-channel 15 is connected with a hose 12 and a barometer 13 through a three-way valve 14, a one-way valve 11 is installed on the hose 12, and then the hose 12 is connected with a flange plate 10 at the end part of an air cushion 9 to form an air inflation pipeline connection of the air cushion 9.
The inflation pressurization structure is mainly used for inflating the air cushion 9, controlling the air pressure inside the air cushion 9 and ensuring that the air cushion 9 is in contact with the reserved return air shaft structure.
One side of a connecting pipeline of the inflating and pressurizing structure is connected to an air pressure control valve of the air cushion 9, the other side of the connecting pipeline is connected with an external air pressure control valve (the external air pressure control valve is a control switch of a high-pressure air source pipeline and is not shown in the figure), one side of the air pressure control valve belongs to an external inherent structure), the connecting pipeline is connected with the other side of the air pressure control valve, the connecting pipeline is used for connecting the other side of the air pressure control valve to an inflating channel, the inflating channel is connected to the high-pressure air source pipeline 2, the air cushion 9 is inflated by high-pressure air in the high-pressure air source pipeline 2, and the inflating is stopped when the air cushion 9 expands until a cushion body is tightly attached to the inner wall of the reserved return air shaft structure; after the filling work of the to-be-filled access path reserved for the return air shaft is finished and the filling body is solidified, the air pressure in the air cushion 9 is released by the air pressure control valve, and the air cushion 9 is pulled out accordingly.
The working principle is as follows: when the air cushion is fixed and inflated, a reserved air return shaft structure consisting of an iron template 6, a fixed iron wire 19, an iron template and a bottom rib fixing ring 20 is erected at the position of the air return shaft of the route to be filled, and the reserved air return shaft structure is fixed by a hanging rib 5, so that the reserved air return shaft structure is prevented from being toppled due to the impact of slurry when the route to be filled is filled; one end of an air cushion lifting rope 3 is fixed on a ventilation roadway top plate above the reserved return air shaft structure, the other end of the air cushion lifting rope 3 vertically suspends an air cushion 9 in the position just contacting with a bottom plate in the reserved return air shaft structure through an air cushion hook 17, a high-pressure air valve is opened to inflate the air cushion 9, and inflation is stopped when the air cushion expands until the bag wall is tightly attached to the inner wall of the reserved return air shaft structure; when the air bag is recovered, after the filling work of the to-be-filled access of the reserved return air shaft is finished and the filling body is solidified, the quick pressure relief plug 24 on the air pressure control valve is pulled out to release air for the air cushion 9, and after the air is released, the air cushion 9 is rolled up through the air cushion lifting rope 3 to finish the recovery for repeated use.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A reserved air return shaft device for a stope is characterized by comprising a fixing structure and an inflating and pressurizing structure; the fixed structure comprises a reserved air return shaft structure and an air cushion; the air cushion is arranged in the reserved air return shaft structure to seal the reserved air return shaft structure; the inflation pressurization structure comprises a high-pressure air source pipe, and the connecting pipeline is connected with the high-pressure air source pipe; the air cushion comprises a flange plate, and the flange plate is connected with a high-pressure air source pipe through a connecting pipeline.
2. A stope reserved return air shaft device according to claim 1, wherein the reserved return air shaft structure comprises a cylindrical structure formed by a plurality of iron mold plates.
3. The device of claim 1, wherein a fixed iron wire is installed on the outer circumferential surface of the structure of the reserved air return shaft.
4. A stope air return shaft device as claimed in claim 1, wherein the bottom of the air return shaft structure is provided with a bottom rib fixing ring.
5. A stope air return shaft device as claimed in claim 1, wherein geotextile and crushed ore are arranged in the air return shaft structure and below the air cushion.
6. A stope reserved return air shaft device according to claim 1, wherein the air cushion comprises a circular cushion body, and a flange is arranged at the top of the circular cushion body.
7. A stope reserved air return shaft device as claimed in claim 6, wherein the flange is provided with an air pressure control valve, and the air pressure control valve comprises an inflation valve, a quick pressure relief plug, a valve body, a sealing rubber mat and a pressure-bearing spring.
8. A stope reserved air return shaft device according to claim 1, wherein an air cushion hook is arranged on the outer circular surface of the air cushion.
9. A stope reserved air return shaft device according to claim 1, wherein the connecting pipeline comprises a one-way valve, a hose, a barometer, a three-way valve and a plurality of channels which are connected in sequence; the multichannel is connected with reducing pipe one end, and the reducing pipe other end is connected with high-pressure wind source pipe.
10. A stope reserved return air shaft device according to claim 1, wherein an inflation channel is arranged on the connecting pipeline, and the inflation channel comprises an air delivery valve and a pressure reducing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122777643.5U CN216198213U (en) | 2021-11-12 | 2021-11-12 | Stope reserved air return shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122777643.5U CN216198213U (en) | 2021-11-12 | 2021-11-12 | Stope reserved air return shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198213U true CN216198213U (en) | 2022-04-05 |
Family
ID=80910457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122777643.5U Expired - Fee Related CN216198213U (en) | 2021-11-12 | 2021-11-12 | Stope reserved air return shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216198213U (en) |
-
2021
- 2021-11-12 CN CN202122777643.5U patent/CN216198213U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220405 |
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| CF01 | Termination of patent right due to non-payment of annual fee |