CN114673523A - Foam carbon heat insulation device for outer surface of coal roadway and construction process - Google Patents
Foam carbon heat insulation device for outer surface of coal roadway and construction process Download PDFInfo
- Publication number
- CN114673523A CN114673523A CN202210176203.0A CN202210176203A CN114673523A CN 114673523 A CN114673523 A CN 114673523A CN 202210176203 A CN202210176203 A CN 202210176203A CN 114673523 A CN114673523 A CN 114673523A
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- China
- Prior art keywords
- coal
- aluminum plate
- foam carbon
- roadway
- heat insulation
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Links
- 239000003245 coal Substances 0.000 title claims abstract description 69
- 238000009413 insulation Methods 0.000 title claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 33
- 239000006260 foam Substances 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 56
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 20
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 6
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003830 anthracite Substances 0.000 claims description 3
- 239000002802 bituminous coal Substances 0.000 claims description 3
- 239000003077 lignite Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 206010019345 Heat stroke Diseases 0.000 description 2
- 208000007180 Sunstroke Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000030159 metabolic disease Diseases 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/04—Provisional protective covers for working space for use in drifting galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a foam carbon heat insulation device for the outer surface of a coal roadway and a construction process, wherein the foam carbon heat insulation device for the outer surface of the coal roadway comprises aluminum plates arranged on two side walls and a top plate of the coal roadway, the aluminum plates are fixed with the coal bed, a direct roof and a basic roof through anchor cables and anchor rods, a plurality of silicon carbide heating rods inserted into the coal bed are arranged on the aluminum plates, and the silicon carbide heating rods are connected with a variable-pressure heating device through cables; the coal-based foam carbon is used as a heat insulation material, has excellent heat conduction performance, strong load bearing capacity, good shock resistance and burning resistance, can prevent and control high temperature and is beneficial to roadway support; the heat insulation layer preparation and support construction process is simple, well exploitation confining pressure is fully utilized, and the construction method is simplified.
Description
Technical Field
The invention relates to the technical field of high-temperature mine heat damage prevention and control, in particular to a foam carbon heat insulation device for the outer surface of a coal roadway and a construction process.
Background
With the increasing mining intensity of domestic coal resources in China, shallow resources are increasingly reduced. The coal resource of more than 1000m of burial depth in China accounts for more than 50%, the coal resource is mainly distributed in the middle east region, high ground temperature becomes a great disaster to underground personnel and equipment along with the increase of mining depth, the temperature of surrounding rock at the position of 1000m of vertical depth of a mine can reach 35-45 ℃, miners can cause metabolism disorder and reduce working efficiency even in sunstroke when working in the environment for a long time, and workers at important working posts can directly cause mine accidents if the sunstroke occurs.
At present, the active heat-insulating layer technology of the roadway is adopted to prevent and control heat damage, and becomes a main way for controlling heat damage. The existing heat insulation materials have the problems of easiness in spontaneous combustion, high heat conductivity coefficient and the like, the heat insulation effect is poor, a large amount of materials and construction equipment need to be transported for filling the heat insulation materials, the number of steps is large, and the cost is high.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a foam carbon heat insulation device for the outer surface of a coal roadway and a construction process, which can reduce the construction cost and simplify the construction process, can use an underground coal bed as a foam carbon preparation raw material, can prepare foam carbon by using local materials for heat insulation, and can solve the problem that the heat insulation effect of the existing material is poor.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a foam carbon heat insulation device for the outer surface of a coal roadway, which comprises aluminum plates arranged on the two side walls and the top plate of the coal roadway, wherein the aluminum plates are fixed with the coal seam, the direct roof and the basic roof through anchor cables and anchor rods, a plurality of silicon carbide heating rods inserted into the coal seam are arranged on the aluminum plates, and the silicon carbide heating rods are connected with a variable-pressure heating device through cables.
Preferably, the side, far away from the coal seam, of the aluminum plate is subjected to oxidation treatment, so that the service life of the aluminum plate can be prolonged.
Preferably, the coal quality of the coal seam is one or more of lignite, bituminous coal or anthracite.
Preferably, the aluminum plate is arranged close to the surface of the coal seam roadway.
The invention also provides a construction process of the device, which specifically comprises the following steps:
(1) fixing aluminum plates on two side walls and a top plate of the coal seam roadway through anchor cables and anchor rods, wherein the aluminum plates are tightly attached to the surface of the coal seam roadway;
(2) arranging a layer of heat-insulating metal net on the outer side of the aluminum plate to enable the heat-insulating metal net to be tightly attached to the aluminum plate;
(3) supporting the aluminum plate and the heat-insulating metal net through a temporary supporting device, and applying supporting pressure to the aluminum plate and the heat-insulating metal net;
(4) Drilling a plurality of holes on an aluminum plate, wherein the drilled holes extend into a coal bed, installing a silicon carbide heating rod in each drilled hole, simultaneously connecting the silicon carbide heating rod with a variable-pressure heating device, adjusting the variable-pressure heating device, heating to 300-450 ℃ at a heating speed of 10 ℃/min, and heating the coal bed close to the aluminum plate to a softened and molten state;
(5) adjusting the variable-pressure heating device, heating to 450-600 ℃ at the heating speed of 2-4 ℃/min, and eliminating the plasticity of the foam carbon layer;
(6) after the foam carbon heat insulation layer is cooled and formed, removing the heat insulation metal net, the temporary supporting device and the silicon carbide heating rod, and carrying out anchor rod and anchor cable supporting;
(7) and after the anchor rod and the anchor cable are supported, carrying out concrete guniting support on the outer side of the aluminum plate.
Preferably, in the step, a hydraulic jack is used for pressing and supporting the aluminum plate and the heat insulation metal net, and the applied pressure is more than 1 MPa.
The invention has the beneficial effects that: .
(1) The invention takes the underground coal bed as the raw material for preparing the foam carbon, and the heat insulation material is prepared by local materials, thereby being beneficial to reducing the treatment cost of heat damage.
(2) The coal-based foam carbon is used as a heat insulation material, has excellent heat conduction performance, strong load bearing capacity, good shock resistance and burning resistance, can prevent and treat high temperature and is beneficial to roadway support.
(3) The heat insulation layer preparation and support construction process is simple, well mining confining pressure is fully utilized, and the construction method is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a carbon foam heat insulation device for the outer surface of a coal roadway before construction.
Fig. 2 is a structural schematic diagram of a thermal insulation layer of the foam carbon thermal insulation device for the outer surface of the coal roadway after construction.
Description of reference numerals:
1. a coal seam; 2. directly ejecting; 3. a foam carbon thermal insulation layer; 4. a silicon carbide heating rod; 5. a coal seam roadway; 6. an aluminum plate; 7. a heat insulating metal mesh; 8. a temporary support device; 9. a cable wire; 10. a variable-pressure heating device; 11. a concrete layer; 12. an anchor cable; 13. an anchor rod; 14. a bottom sandstone; 15. and (4) a basic top.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 2, the present embodiment provides a foam carbon thermal insulation device for an outer surface of a coal roadway and a construction process thereof.
The utility model provides a foam carbon heat-proof device for coal road surface, is including arranging the aluminum plate on coal seam tunnel both sides group and roof, aluminum plate passes through anchor rope, stock and coal seam, immediate roof, basic top are fixed, be provided with a plurality of carborundum heating rods that insert in the coal seam on the aluminum plate, carborundum heating rod passes through the cable and is connected with vary voltage rising temperature device, aluminum plate pastes tight coal seam tunnel surface setting.
One side of the aluminum plate, which is far away from the coal bed, is subjected to oxidation treatment, so that the service life of the aluminum plate 6 can be prolonged. The coal quality of the coal bed is one or a mixture of lignite, bituminous coal or anthracite.
A construction process of a foam carbon heat insulation device for the outer surface of a coal roadway comprises the following steps:
(1) fixing aluminum plates on the two side walls and the top plate of the coal seam roadway 5 through anchor cables and anchor rods, wherein the aluminum plates are tightly attached to the surface of the coal seam roadway; the top coal is reserved in the coal seam roadway 5 of the embodiment during construction;
(2) a layer of heat-insulating metal net is arranged on the outer side of the aluminum plate, so that the heat-insulating metal net is tightly attached to the aluminum plate, and the aluminum plate 6 can be better supported;
(3) supporting the aluminum plate and the heat-insulating metal net through a temporary supporting device, and applying supporting pressure to the aluminum plate and the heat-insulating metal net; specifically, the existing temporary supporting device 8 well known by the technical personnel in the field is used for supporting, a hydraulic jack is used for pressing and supporting an aluminum plate and a heat insulation metal net, and the applied pressure is more than 1 MPa.
(4) Drilling a plurality of holes on an aluminum plate, wherein the drilled holes extend into a coal bed, installing a silicon carbide heating rod 4 in each drilled hole, wherein the specific installation mode adopts the existing installation mode well known by the technical personnel in the field, meanwhile, the silicon carbide heating rod 4 is connected with a variable-pressure heating device, the variable-pressure heating device is adjusted, the coal bed close to the aluminum plate is heated to 300-450 ℃ at the heating speed of 10 ℃/min, and the coal bed is heated to a softened and molten state; in order to ensure that the thickness of the obtained foam carbon layer is uniform, the silicon carbide heating rods 4 are uniformly distributed on the aluminum plate, and the specific drilling operation mode and the drilling arrangement mode adopt the existing drilling mode and arrangement mode which are well known by the technical personnel in the field and are not described in detail; after heating, a foam carbon thermal insulation layer 3 is formed between the aluminum plate 6 and the coal seam 1.
(5) Adjusting the variable-pressure heating device, heating to 450-600 ℃ at the heating speed of 2-4 ℃/min, and eliminating the plasticity of the foam carbon layer;
(6) after the foam carbon thermal insulation layer is cooled and formed, removing the thermal insulation metal net, the temporary supporting device and the silicon carbide heating rod, and carrying out anchor rod and anchor cable supporting;
(7) after the anchor rod and anchor cable support is completed, concrete guniting support is carried out on the outer side of the aluminum plate 6, and a concrete layer 11 is formed on the outer side of the aluminum plate 6.
The silicon carbide heating rod 4, the variable-pressure heating device 10, the aluminum plate 6 and the heat-insulating metal mesh 7 of the present embodiment are made of existing products or structures well known to those skilled in the art, and will not be described in detail herein.
In the embodiment, the underground coal bed is used as a raw material for preparing the foam carbon, and the heat insulation material is prepared by using local materials, so that the heat damage treatment cost is favorably reduced. In the embodiment, the coal-based foam carbon is used as a heat insulation material, has excellent heat conductivity, strong load bearing capacity, good shock resistance and burning resistance, can prevent and treat high temperature and is beneficial to roadway support. The thermal insulation layer preparation and support construction process of the embodiment is simple, well exploitation confining pressure is fully utilized, and the construction method is simplified.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides a foam carbon heat-proof device for coal road surface, its characterized in that, is including arranging aluminum plate (6) on coal seam tunnel both sides group and roof, aluminum plate (6) are fixed with coal seam (1), immediate roof (2), basic top (15) through anchor rope (12), stock (13), aluminum plate (6) are last to be provided with a plurality of carborundum heating rods (4) of inserting in coal seam (1), carborundum heating rod (4) are connected with vary voltage rising temperature device (10) through cable (9).
2. The foam carbon thermal insulation device for the outer surface of the coal roadway according to claim 1, wherein the side of the aluminum plate (6) far away from the coal seam (1) is subjected to oxidation treatment.
3. The foam carbon thermal insulation device for the outer surface of the coal roadway according to claim 1, wherein the coal quality of the coal seam (1) is one or more of lignite, bituminous coal or anthracite.
4. The foam carbon thermal insulation device for the outer surface of the coal roadway according to claim 1, wherein the aluminum plate (6) is arranged to be close to the surface of the coal roadway.
5. A construction process of a foam carbon heat insulation device for the outer surface of a coal roadway is characterized by comprising the following steps:
(1) fixing the aluminum plates (6) on the two side walls and the top plate of the coal seam roadway through anchor cables (12) and anchor rods (13), wherein the aluminum plates (6) are tightly attached to the surface of the coal seam roadway;
(2) A layer of heat-insulating metal net (7) is arranged on the outer side of the aluminum plate (6) and is tightly attached to the aluminum plate (6);
(3) the aluminum plate (6) and the heat-insulation metal net (7) are supported through a temporary supporting device, and supporting pressure is applied to the aluminum plate (6) and the heat-insulation metal net (7);
(4) drilling a plurality of holes in an aluminum plate (6), wherein the drilled holes extend into a coal seam (1), installing a silicon carbide heating rod in each drilled hole, simultaneously connecting the silicon carbide heating rod with a variable-pressure heating device (10), adjusting the variable-pressure heating device (10), heating to 300-450 ℃ at a heating speed of 10 ℃/min, and heating the coal seam (1) close to the aluminum plate (6) to a softened and molten state;
(5) adjusting a variable-pressure heating device (10), heating to 450-600 ℃ at a heating speed of 2-4 ℃/min, and eliminating the plasticity of the foam carbon layer;
(6) after the foam carbon heat insulation layer is cooled and formed, removing the heat insulation metal net, the temporary supporting device and the silicon carbide heating rod, and carrying out anchor rod and anchor cable supporting;
(7) and after the anchor rod and the anchor cable are supported, carrying out concrete guniting support on the outer side of the aluminum plate.
6. The foam carbon heat insulation device for the outer surface of the coal roadway and the construction process according to claim 5, wherein in the step (3), a hydraulic jack is adopted to support the aluminum plate (6) and the heat insulation metal net (7) in a pressing manner, and the applied pressure is greater than 1 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210176203.0A CN114673523B (en) | 2022-02-25 | 2022-02-25 | Foam carbon heat insulation device for coal roadway outer surface and construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210176203.0A CN114673523B (en) | 2022-02-25 | 2022-02-25 | Foam carbon heat insulation device for coal roadway outer surface and construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114673523A true CN114673523A (en) | 2022-06-28 |
| CN114673523B CN114673523B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210176203.0A Active CN114673523B (en) | 2022-02-25 | 2022-02-25 | Foam carbon heat insulation device for coal roadway outer surface and construction process |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003277164A (en) * | 2002-03-22 | 2003-10-02 | Penta Ocean Constr Co Ltd | Porous structural body and construction method therefor |
| US20110197532A1 (en) * | 2010-02-17 | 2011-08-18 | Teng Chung-Hsien | Waterproof heat-insulation construction method and module |
| CN106703884A (en) * | 2017-01-13 | 2017-05-24 | 中南大学 | Cooling method for thermal insulating layer on wall surface of high-temperature hard rock roadway of deep well |
| CN110863847A (en) * | 2019-11-25 | 2020-03-06 | 山东科技大学 | Solid waste heat insulation device for outer surface of surrounding rock of roadway and construction process of solid waste heat insulation device |
| CN110863846A (en) * | 2019-11-25 | 2020-03-06 | 山东科技大学 | Heat insulation device for mine roadway and construction method thereof |
-
2022
- 2022-02-25 CN CN202210176203.0A patent/CN114673523B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003277164A (en) * | 2002-03-22 | 2003-10-02 | Penta Ocean Constr Co Ltd | Porous structural body and construction method therefor |
| US20110197532A1 (en) * | 2010-02-17 | 2011-08-18 | Teng Chung-Hsien | Waterproof heat-insulation construction method and module |
| CN106703884A (en) * | 2017-01-13 | 2017-05-24 | 中南大学 | Cooling method for thermal insulating layer on wall surface of high-temperature hard rock roadway of deep well |
| CN110863847A (en) * | 2019-11-25 | 2020-03-06 | 山东科技大学 | Solid waste heat insulation device for outer surface of surrounding rock of roadway and construction process of solid waste heat insulation device |
| CN110863846A (en) * | 2019-11-25 | 2020-03-06 | 山东科技大学 | Heat insulation device for mine roadway and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN114673523B (en) | 2023-07-07 |
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