CN110805471B - Airtight for reconstruction of oil depot chamber from abandoned coal mine roadway and construction method thereof - Google Patents
Airtight for reconstruction of oil depot chamber from abandoned coal mine roadway and construction method thereof Download PDFInfo
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- CN110805471B CN110805471B CN201911070841.9A CN201911070841A CN110805471B CN 110805471 B CN110805471 B CN 110805471B CN 201911070841 A CN201911070841 A CN 201911070841A CN 110805471 B CN110805471 B CN 110805471B
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- 239000003245 coal Substances 0.000 title claims abstract description 30
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 239000011435 rock Substances 0.000 claims abstract description 35
- 238000003466 welding Methods 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000009966 trimming Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation 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
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a seal for an oil depot chamber reconstructed from abandoned coal mine roadways and a construction method thereof, wherein the seal comprises two seal walls, the two seal walls have the same structure and are formed by welding prefabricated steel plates, an inflatable air bag is arranged in an air bag groove at the peripheral edge of each seal wall, and a seal door is arranged at the middle position of each seal wall; the two sealed walls are connected by a plurality of stud bolts, and a channel between the sealed doors is formed by welding steel plates; the space between the closed walls is filled with concrete, and the concrete and the surrounding rock of the roadway are connected into a whole through anchor rods; the closed construction steps comprise trimming and reinforcing of roadway surrounding rock mass, construction of a closed wall, concrete filling and installation of a sealing door. The invention has the characteristics of high construction speed, good sealing effect, high strength, vibration resistance and convenient maintenance.
Description
Technical Field
The invention relates to chamber closure, in particular to closure for rebuilding an underground oil depot by utilizing a waste coal mine tunnel, and belongs to the field of utilization of underground space of waste coal mines.
Background
Coal is a nonrenewable mineral resource, and after long-term exploitation, the resource gradually shrinks and is exhausted. The method for improving the abandoned coal mine into the underground oil depot is a method for effectively utilizing abandoned mines, can improve the utilization rate of underground space resources, can also generate considerable economic benefits, and accelerates the economic transformation of resource-depleted cities. The patent (201910716200. X) discloses a method for constructing an underground oil depot by using abandoned coal mine roadways, which separates the well-preserved roadways into oil depot chambers with different lengths by using sealing. In the process of rebuilding an oil depot chamber in a roadway, the closed structure and the construction method are directly related to the safety and the service life of the chamber oil depot.
At present, the well which is disclosed is closed to a great extent and plays a different role in the production of coal mines. Common seals include fire, water and explosion seals. For example, patent CN 106988782 a discloses a method for constructing a fire-proof sealing wall under a coal mine, which can prevent gas in a goaf from permeating into a pedestrian roadway; patent CN 105507950A discloses a waterproof sealing structure of an arch buffer wall, which can effectively treat flood problems; patent CN 110017167 a discloses a method for constructing a coal mine explosion-proof sealed wall, which can meet the requirements of strength and air sealing to the maximum extent. The patent discloses that the seal and the surrounding rock of the roadway are not integrated into a whole, and as the service time of the oil depot chamber is increased, separation layers are easy to occur between the seal and the surrounding rock of the roadway, so that oil is leaked; the abandoned roadway reconstruction oil depot chamber has more seals to be built, the traditional fireproof, waterproof and explosion-proof seals have no unified building standard and are built according to the sealing effect and practical experience, and the seals for the abandoned roadway reconstruction oil depot chamber have no reference experience at present; in addition, the oil depot chamber is formed by separating waste roadways, and the inside of the oil depot chamber cannot be quickly overhauled due to the traditional sealing when leakage occurs.
Disclosure of Invention
Aiming at the technical problems, the invention provides a seal for reconstructing an oil depot chamber from abandoned coal mine roadways and a construction method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme: a seal for an oil depot chamber reconstructed from a waste coal mine roadway and a construction method thereof are disclosed, wherein the seal comprises a first seal wall and a second seal wall, peripheral edges of the first seal wall and the second seal wall are respectively provided with an air bag groove communicated with the periphery, an inflatable air bag is arranged in the air bag groove and is used for sealing a roadway surrounding rock with the first seal wall and the second seal wall, the middle parts of the first seal wall and the second seal wall are respectively provided with a seal door, the first seal wall and the second seal wall are connected by a plurality of stud bolts, and channels of the seal doors are formed by welding steel plates; an oil inlet pipeline, an oil outlet pipeline and an exhaust pipeline which penetrate through the seal are embedded in the seal; and the space between the first sealing wall and the second sealing wall is filled with concrete, and the concrete and the surrounding rock of the roadway are connected into a whole through anchor rods.
Furthermore, the first sealing wall and the second sealing wall are the same in structure and are both of a hollow structure formed by welding prefabricated steel plates, the prefabricated steel plates are formed by welding steel plates, and heat insulation and fire insulation materials are filled in the hollow interiors of the first sealing wall and the second sealing wall.
Furthermore, the sealing door is opened towards the outside of the sealing, is positioned in the middle of the sealing wall and is 0.4m away from the bottom of the roadway, and the width and the height of the sealing door are 1m and 2 m.
Furthermore, two ends of the stud bolt are respectively connected with the first sealed wall and the second sealed wall, and the distance between the first sealed wall and the second sealed wall can be adjusted by rotating the bolt and the nut.
Furthermore, an oil inlet pipeline, an oil outlet pipeline and an exhaust pipeline which penetrate through the seal are pre-buried in the seal, the oil outlet pipeline, the oil inlet pipeline and the exhaust pipeline are arranged in sequence from bottom to top, and a pipe orifice in the oil depot chamber of the exhaust pipeline is higher than the upper end limit liquid level surface of the oil depot design.
Further, the construction method comprises the following steps:
a) and (3) trimming and reinforcing the surrounding rock body of the roadway: firstly, removing cement guniting on a roadway at a closed construction position to expose surrounding rocks of the roadway; secondly, polishing the surrounding rock of the roadway at the construction position of the airtight wall to smooth the surrounding rock; and then reinforcing the surrounding rock of the roadway between the first sealing wall and the second sealing wall by using anchor rods.
b) Constructing the airtight wall: firstly, prefabricating a steel plate block according to the cross-sectional area and the shape of a roadway and the design size and the design position of a stud bolt, an oil inlet pipeline, an oil outlet pipeline, an exhaust pipeline and a sealing door; secondly, conveying the prefabricated steel plates to a sealing construction position to be welded into a first sealing wall and a second sealing wall, and installing an air bag; then placing the sealed wall at a designed position, connecting the sealed wall by using a stud bolt, and adjusting the positions of the front sealed wall and the rear sealed wall; and welding the channel of the sealing door by using a steel plate.
c) Concrete filling: firstly, pre-burying an oil inlet pipeline, an oil outlet pipeline and an exhaust pipeline; then, inflating the air bag to enable the first airtight wall and the second airtight wall to form an airtight space; and then pouring concrete in the closed manner through the grouting opening.
d) Installing a sealing door: and curing the concrete until the concrete is solidified, installing a sealing door, and testing the sealing door and the sealing effect.
Further, the anchor rod is exposed out of the roadway surrounding rock by 30cm and used for connecting the concrete and the roadway surrounding rock.
The invention has the beneficial effects that: compared with the prior art, the invention provides a seal for rebuilding an oil depot chamber by abandoned coal mine roadways and a construction method thereof, and the seal has the following advantages: (1) the two airtight walls and the middle concrete form three sealing layers, and the middle concrete layer forms the airtight layer and the roadway surrounding rock into a whole through the anchor rod, so that the airtight layer and the roadway surrounding rock are prevented from separating; (2) the two closed walls are formed by welding prefabricated steel plates, and the steel plates can be prefabricated on the well and then transported to the underground, so that the closed construction efficiency is improved; (3) the sealing between the two closed walls and the roadway is realized by adopting the flexible sealing of the air bag, so that the roadway surrounding rock can still keep better sealing performance when vibrating or deforming; (4) a passage for workers to enter and exit is arranged in the seal, and the interior of the oil depot chamber can be overhauled.
Drawings
Fig. 1 is a schematic view of a seal for rebuilding an oil depot chamber of a abandoned coal mine tunnel.
Fig. 2 is a left side view of a closed oil depot chamber reconstructed from abandoned coal mine tunnels.
Fig. 3 is a sectional view taken along line a-a of fig. 1.
Fig. 4 is a schematic view of a prefabricated steel slab.
In the figure, 1-roadway surrounding rock, 2-air bag, 3-concrete, 4-exhaust pipeline, 5-stud bolt, 6-heat insulation fireproof material, 7-roadway, 8-first sealing wall, 9-second sealing wall, 10-nut, 11-oil inlet pipeline, 12-oil outlet pipeline, 13-anchor rod, 14-oil depot chamber, 15-welding seam, 16-sealing door, 17-first prefabricated steel plate, 18-air bag groove, 19-second prefabricated steel plate, 20-third prefabricated steel plate, 21-fourth prefabricated steel plate and 22-channel.
Detailed Description
Because the geological conditions and the production capacity of different coal mines are different, the shapes and the sizes of the roadways in the mines are different, and the roadway of each mine has the characteristics of the roadway. The invention takes a semicircular arch tunnel as an example to explain the sealing for the oil depot chamber reconstructed from abandoned coal mine tunnels and the construction method thereof, and obviously, the implementation mode is only a part of the embodiment of the invention, but not the whole embodiment. 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.
In order to facilitate description of an embodiment of a method for constructing and sealing an oil depot chamber reconstructed from waste coal mine roadways, a basic situation of the oil depot chamber reconstructed from the waste coal mine roadways is first described. The method comprises the steps that an oil depot chamber 14 is built in a waste coal mine tunnel 7, firstly, the distribution characteristics of rock strata, faults and cracks of the waste tunnel 7 are determined, and then the tunnel 7 is reinforced and sealed to reach an oil storage condition; and finally, building a seal in the roadway to isolate the roadway 7 into an oil depot chamber 14 with the length of 200-300 m, and reserving a certain safety distance between the oil depot chamber 14 and the oil depot chamber 14.
A sealing and constructing method for an oil depot chamber reconstructed from abandoned coal mine roadways comprises the following specific implementation modes:
as shown in fig. 1-4, the seal for the oil depot chamber reconstructed from the abandoned coal mine roadway comprises a first seal wall 8, a second seal wall 9, an air bag 2, concrete 3, stud bolts 5, a heat-insulating fireproof material 6, a nut 10, an anchor rod 13 and a seal door 16, wherein the air bag 2 which can be inflated is arranged in an air bag groove 18 at the peripheral edges of the first seal wall 8 and the second seal wall 9, the seal door 16 is arranged between the first seal wall 8 and the second seal wall 9, the first seal wall 8 and the second seal wall 9 are connected by the stud bolts 5, and a channel 22 between the seal doors 16 is formed by welding steel plates; an oil inlet pipeline 11, an oil outlet pipeline 12 and an exhaust pipeline 4 are pre-buried in the closed inner part; and the space between the first sealed wall 8 and the second sealed wall 9 is filled with concrete 3, one end of the anchor rod 13 is used for reinforcing the surrounding rock 1 of the roadway, and the other end of the anchor rod is poured into the concrete 3.
In the embodiment, the first sealing wall 8 and the second sealing wall 9 have the same structure and are formed by welding prefabricated steel plates. As shown in fig. 4, the enclosure wall in this embodiment is composed of a first prefabricated steel plate 17, a second prefabricated steel plate 19, a third prefabricated steel plate 20, and a fourth prefabricated steel plate 21, which are connected by welding, and the formed welding seam 15 is as shown in fig. 2. The prefabricated steel plate is formed by welding steel plates, heat-insulating and fire-insulating materials 6 are filled in the prefabricated steel plate, and an air bag groove 18 is designed at the edge of the prefabricated steel plate which is in contact with a roadway. It should be noted that the number and shape of the prefabricated steel plate blocks in the present invention are not limited to the embodiment, and other numbers and shapes of the prefabricated steel plate blocks are within the understanding of those skilled in the art.
In the embodiment, the sealing door 16 is opened towards the outside of the sealing, is positioned in the middle of the sealing wall and is 0.4m away from the bottom of the roadway, and the width and the height of the sealing door 16 are 1m and 2 m.
In this embodiment, the stud bolt 5 is connected to the first enclosure wall 8 and the second enclosure wall 9 at both ends thereof, and the bolt and nut 10 is rotated to adjust the distance between the first enclosure wall 8 and the second enclosure wall 9.
In this embodiment, there are pre-buried oil inlet pipeline 11, oil outlet pipeline 12, exhaust pipe 4 in inclosed inside, from supreme order down be oil outlet pipeline 12, oil inlet pipeline 11, exhaust pipe 4 in proper order, wherein the pipe orifice of exhaust pipe 4 in the indoor 14 of oil depot cave is higher than the upside limit liquid level surface of oil depot design.
In the present embodiment, the specific steps for constructing the seal are as follows:
a) and (3) trimming and reinforcing the surrounding rock body of the roadway: firstly, removing cement guniting on a roadway at a closed construction position to expose surrounding rocks 1 of the roadway; secondly, polishing the surrounding rock of the roadway at the construction position of the airtight wall to smooth the surrounding rock; finally, reinforcing the surrounding rock of the roadway between the first sealed wall 8 and the second sealed wall 9 by using an anchor rod 13;
b) constructing the airtight wall: firstly, according to the cross-sectional area and the shape of a roadway, the sizes and the positions of a stud bolt 5, an oil inlet pipeline 11, an oil outlet pipeline 12, an exhaust pipeline 4 and a sealing door 16 are designed to be prefabricated into steel plates; secondly, conveying the prefabricated steel plate to a sealing construction position to be welded into a first sealing wall 8 and a second sealing wall 9, and installing an air bag 3; then placing the first sealed wall 8 and the second sealed wall 9 at designed positions, connecting the first sealed wall 8 and the second sealed wall 9 through the stud bolts 5, and adjusting the positions of the first sealed wall 8 and the second sealed wall 9; finally, welding the channels 22 between the sealing doors 16 by using steel plates;
c) concrete filling: firstly, an oil inlet pipeline 11, an oil outlet pipeline 12 and an exhaust pipeline 4 are pre-buried; then the air bag 3 is inflated, so that the first airtight wall 8, the second airtight wall 9 and the surrounding rock of the roadway form a closed space, and finally the concrete 3 is poured in a closed mode through a grouting opening;
d) installing a sealing door: and curing the concrete 3 until the concrete is solidified, installing the sealing door 16, and testing the sealing effect of the sealing door 16 and the whole sealing.
In the embodiment, the end part of the anchor rod 13 is exposed out of the roadway wall by 30 cm; the mechanical property of the poured concrete 3 is similar to that of the surrounding rock of the roadway at the construction position.
Claims (7)
1. The seal for the oil depot chamber reconstructed from the abandoned coal mine roadway is characterized by comprising a first seal wall and a second seal wall, wherein the peripheral edges of the first seal wall and the second seal wall are respectively provided with an air bag groove communicated with the periphery, an inflatable air bag is arranged in the air bag groove and is used for sealing the roadway surrounding rock with the first seal wall and the second seal wall, the middle parts of the first seal wall and the second seal wall are respectively provided with a seal door, the first seal wall and the second seal wall are connected by a plurality of stud bolts, and channels of the seal doors are formed by welding steel plates; an oil inlet pipeline, an oil outlet pipeline and an exhaust pipeline which penetrate through the seal are embedded in the seal; and the space between the first sealing wall and the second sealing wall is filled with concrete, and the concrete and the surrounding rock of the roadway are connected into a whole through anchor rods.
2. The seal for the oil depot chamber rebuilt by the abandoned coal mine roadway as claimed in claim 1, is characterized in that: the first sealing wall and the second sealing wall are of the same structure and are of a hollow structure formed by welding prefabricated steel plates, the prefabricated steel plates are formed by welding steel plates, and heat insulation and fire insulation materials are filled in the hollow interiors of the first sealing wall and the second sealing wall.
3. The seal for the oil depot chamber rebuilt by the abandoned coal mine roadway as claimed in claim 1, is characterized in that: the sealing door is opened towards the outside of the sealing, is positioned in the middle of the sealing wall, is 0.4m away from the bottom of the roadway, and is 1m wide and 2m high.
4. The seal for the oil depot chamber rebuilt by the abandoned coal mine roadway as claimed in claim 1, is characterized in that: two ends of the stud bolt are respectively connected with the first sealed wall and the second sealed wall, and the distance between the first sealed wall and the second sealed wall can be adjusted by rotating the bolt and the nut.
5. The seal for the oil depot chamber rebuilt by the abandoned coal mine roadway as claimed in claim 1, is characterized in that: the oil storage system is characterized in that an oil inlet pipeline, an oil outlet pipeline and an exhaust pipeline which penetrate through the seal are embedded in the seal in advance, the oil outlet pipeline, the oil inlet pipeline and the exhaust pipeline are arranged in sequence from bottom to top, and a pipe orifice in an oil storage chamber of the exhaust pipeline is higher than the upper end limit liquid level surface of the oil storage design.
6. The method for constructing the seal for the oil depot chamber reconstructed from the abandoned coal mine roadway as claimed in claim 1, which comprises the following steps: the construction method is characterized by comprising the following steps:
a) and (3) trimming and reinforcing the surrounding rock body of the roadway: firstly, removing cement guniting on a roadway at a closed construction position to expose surrounding rocks of the roadway; secondly, polishing the surrounding rock of the roadway at the construction position of the airtight wall to smooth the surrounding rock; then reinforcing roadway surrounding rock between the first sealing wall and the second sealing wall by using anchor rods;
b) constructing the airtight wall: firstly, prefabricating a steel plate block according to the cross-sectional area and the shape of a roadway and the design size and the design position of a stud bolt, an oil inlet pipeline, an oil outlet pipeline, an exhaust pipeline and a sealing door; secondly, conveying the prefabricated steel plates to a sealing construction position to be welded into a first sealing wall and a second sealing wall, and installing an air bag; then placing the sealed wall at a designed position, connecting the sealed wall by using a stud bolt, and adjusting the positions of the front sealed wall and the rear sealed wall; welding a channel of the sealing door by using a steel plate;
c) concrete filling: firstly, pre-burying an oil inlet pipeline, an oil outlet pipeline and an exhaust pipeline; then, inflating the air bag to enable the first airtight wall and the second airtight wall to form an airtight space; then, pouring concrete in a closed manner through a grouting opening;
d) installing a sealing door: and curing the concrete until the concrete is solidified, installing a sealing door, and testing the sealing door and the sealing effect.
7. The method for constructing the seal for the oil depot chamber reconstructed from the abandoned coal mine tunnel as claimed in claim 6, which comprises the following steps: the anchor rod is characterized in that the anchor rod is exposed out of the roadway surrounding rock by 30cm and used for connecting concrete and the roadway surrounding rock.
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| CN201911070841.9A CN110805471B (en) | 2019-11-05 | 2019-11-05 | Airtight for reconstruction of oil depot chamber from abandoned coal mine roadway and construction method thereof |
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| CN201911070841.9A CN110805471B (en) | 2019-11-05 | 2019-11-05 | Airtight for reconstruction of oil depot chamber from abandoned coal mine roadway and construction method thereof |
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| CN110805471B true CN110805471B (en) | 2021-10-29 |
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| CN112127922A (en) * | 2020-09-22 | 2020-12-25 | 九州职业技术学院 | Waste coal mine chamber reinforcing method |
| CN112943370A (en) * | 2021-03-08 | 2021-06-11 | 安徽理工大学 | Method for building plant seed bank by closing/abandoning mine |
| CN115419465B (en) * | 2022-08-22 | 2023-05-26 | 华北科技学院 | End plugging method for tunnel reconstruction gas storage |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4771174B2 (en) * | 2007-05-16 | 2011-09-14 | 清水建設株式会社 | Tunnel closing method and tunnel closing device |
| CN102337906A (en) * | 2011-09-09 | 2012-02-01 | 陕西开拓建筑科技有限公司 | Construction method for pouring airtight partition wall between recovered roadway and reserved roadway |
| CN203515658U (en) * | 2013-10-16 | 2014-04-02 | 陈传新 | Automatic closed remote-control fire protection device for coal mining area |
| RU2554371C2 (en) * | 2013-08-28 | 2015-06-27 | Николай Иннокентьевич Турушев | Explosion-proof jumper device |
| US9797250B1 (en) * | 2014-11-18 | 2017-10-24 | Harold Akers | Safe haven wall |
| CN206987890U (en) * | 2017-07-17 | 2018-02-09 | 山东科技大学 | A kind of tunnel assembled air sac sealing block wall |
| CN109826667A (en) * | 2019-01-29 | 2019-05-31 | 中国矿业大学(北京) | The I-shaped checkdam of coal mine underground reservoir |
| CN110359957A (en) * | 2019-07-31 | 2019-10-22 | 国家能源投资集团有限责任公司 | A kind of dam body connection structure and its construction method |
-
2019
- 2019-11-05 CN CN201911070841.9A patent/CN110805471B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4771174B2 (en) * | 2007-05-16 | 2011-09-14 | 清水建設株式会社 | Tunnel closing method and tunnel closing device |
| CN102337906A (en) * | 2011-09-09 | 2012-02-01 | 陕西开拓建筑科技有限公司 | Construction method for pouring airtight partition wall between recovered roadway and reserved roadway |
| RU2554371C2 (en) * | 2013-08-28 | 2015-06-27 | Николай Иннокентьевич Турушев | Explosion-proof jumper device |
| CN203515658U (en) * | 2013-10-16 | 2014-04-02 | 陈传新 | Automatic closed remote-control fire protection device for coal mining area |
| US9797250B1 (en) * | 2014-11-18 | 2017-10-24 | Harold Akers | Safe haven wall |
| CN206987890U (en) * | 2017-07-17 | 2018-02-09 | 山东科技大学 | A kind of tunnel assembled air sac sealing block wall |
| CN109826667A (en) * | 2019-01-29 | 2019-05-31 | 中国矿业大学(北京) | The I-shaped checkdam of coal mine underground reservoir |
| CN110359957A (en) * | 2019-07-31 | 2019-10-22 | 国家能源投资集团有限责任公司 | A kind of dam body connection structure and its construction method |
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