CN113482672B - Cold region tunnel anti-freezing heat preservation and heat preservation system based on heat preservation - Google Patents
Cold region tunnel anti-freezing heat preservation and heat preservation system based on heat preservation Download PDFInfo
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- CN113482672B CN113482672B CN202110832058.2A CN202110832058A CN113482672B CN 113482672 B CN113482672 B CN 113482672B CN 202110832058 A CN202110832058 A CN 202110832058A CN 113482672 B CN113482672 B CN 113482672B
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- 238000004321 preservation Methods 0.000 title claims abstract description 51
- 238000007710 freezing Methods 0.000 title claims abstract description 27
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 66
- 238000012545 processing Methods 0.000 claims description 36
- 238000012544 monitoring process Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005338 heat storage Methods 0.000 claims description 11
- 239000011449 brick Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920006327 polystyrene foam Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 208000001034 Frostbite Diseases 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 239000012774 insulation material Substances 0.000 claims 1
- 230000008014 freezing Effects 0.000 abstract description 7
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000009746 freeze damage Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- 208000009084 Cold Injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
Abstract
The invention discloses an antifreezing heat insulation layer for a tunnel in a cold region, which comprises the following components: the active heat supply module comprises a heat exchange tube loop, a ground source heat pump, a heat supply tube loop and a heat supply assembly; the first heat supply pipe loop is arranged between the primary lining and the secondary lining in an inverted arch shape in a coiled manner, and the second heat supply pipe loop is arranged on the outer surface of the primary lining in an inverted arch shape in a coiled manner; the heat exchange pipe loop is laid in the buried depth and exchanges heat with underground rock to absorb heat, and the first heat supply pipe loop is communicated with the first heat exchange pipe loop through a first ground source heat pump; the second heat supply pipe loop is communicated with the second heat exchange pipe loop through a second ground source heat pump; the heat supply assembly is buried below the ground of the tunnel, is positioned above the heat exchange tube loop, absorbs heat of the heat exchange tube loop, and is a passive heat preservation module for supplying heat to the ground of the tunnel, and is an inverted arch-shaped heat preservation layer arranged outside the second heat supply tube loop. The invention can avoid the freezing injury of the tunnel in the cold region and provides a guarantee for the operation and management of the tunnel.
Description
Technical Field
The invention relates to the field of freezing prevention and warmth retention of tunnels in cold regions. More particularly, the invention relates to an antifreezing heat insulation layer for a tunnel in a cold region and a heat insulation system based on the heat insulation layer.
Background
As the number of the cold area tunnels in China is increased, the problem of freeze injury of the cold area tunnels is increased, and the cyclic occurrence of the problem of freeze injury can cause the pushing out of the lining structure part and even the whole collapse of the tunnels; large-area spalling and cracking of tunnel lining may result; the back of the lining is possibly frozen, and dissolution water leakage occurs; and water leakage and ice hanging at the inverted arch part of the tunnel can be caused, wall ice is generated due to freezing of the side walls, frost heaving and ice accumulation at the bottom can be caused, and great difficulty is brought to the operation and management of the tunnel in the cold area. Therefore, the problem of cold injury in cold areas must be solved.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
The invention also aims to provide an antifreezing heat insulation layer for the tunnel in the cold region, which can avoid freezing injury of the tunnel in the cold region and provides a guarantee for operation and management of the tunnel.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a cold zone tunnel anti-freezing insulation comprising:
the active heat supply module comprises a heat exchange tube loop, a ground source heat pump, a heat supply tube loop and a heat supply assembly; the heat supply pipe loop comprises a first heat supply pipe loop and a second heat supply pipe loop, the first heat supply pipe loop is arranged between the primary lining and the secondary lining in an inverted arch shape in a disc mode, a water supply interface and a water return interface of the first heat supply pipe loop are arranged on one side of the tunnel, the second heat supply pipe loop is arranged on the outer surface layer of the primary lining in an inverted arch shape in a disc mode, and the water supply interface and the water return interface of the second heat supply pipe loop are arranged on the other side of the tunnel; the heat exchange pipe loop is paved in a buried depth, performs heat exchange with underground rock and absorbs heat, and comprises a first heat exchange pipe loop and a second heat exchange pipe loop, wherein the first heat supply pipe loop is communicated with the first heat exchange pipe loop through a first ground source heat pump, and the heat absorbed by the first heat exchange pipe loop is lifted through the first ground source heat pump, so that the first heat supply pipe loop reaches a certain temperature requirement, and the temperature of a first lining and a second lining of a tunnel is raised; the second heat supply pipe loop is communicated with the second heat exchange pipe loop through a second ground source heat pump, and heat absorbed by the second heat exchange pipe loop is lifted through the second ground source heat pump, so that the second heat supply pipe loop reaches a certain temperature requirement, and the temperature of the first lining of the tunnel is raised; the heat supply component is buried below the ground of the tunnel and is positioned above the heat exchange tube loop to absorb heat of the heat exchange tube loop and supply heat for the ground of the tunnel;
the passive heat preservation module is an inverted arch-shaped heat preservation layer arranged on the outer side of the second heating pipe loop.
Preferably, the heat supply assembly comprises a primary heat conduction layer and a secondary heat conduction and storage layer which are arranged from top to bottom, wherein the secondary heat conduction and storage layer comprises heat conduction components and heat storage components which are arranged in a crossing manner along the direction of a tunnel cross path, and the heat conduction components comprise a first heat conduction layer and a second heat conduction layer which are arranged from top to bottom; the primary heat conduction layer is a refractory brick layer, the first heat conduction layer is a concrete layer, and the second heat conduction layer is a common carbon steel layer with carbon content of 1%; the heat storage component is formed by piling porous bricks.
Preferably, the inverted arch-shaped heat-insulating layer is made of one or a combination of several of polystyrene foam plates, polyurethane foam, glass fiber heat-insulating cotton, inner wall heat-insulating paint, xps extrusion molding and vitrified micro-bead heat-insulating materials.
Preferably, a waterproof layer is further arranged on the outer side of the passive heat preservation module, and the thickness of the waterproof layer is not more than 4cm.
Preferably, the waterproof layer is a set-accelerating mortar based on cement and sodium silicate.
The invention further claims a heat preservation system of the cold region tunnel anti-freezing heat preservation layer, which comprises:
the real-time air temperature monitoring module is used for monitoring the air temperatures of a plurality of monitoring points in the tunnel in real time;
the data processing module is used for analyzing the air temperature value monitored by the real-time air temperature monitoring module and outputting an analysis result; the data processing module counts the average air temperature value of the same fixed point position in each processing unit by taking each time period of 10-30 min as one processing unit from the monitoring time; dividing the average air temperature value of all fixed point positions of each processing unit into three temperature areas with the temperature of more than or equal to 0 ℃, the temperature of less than 0 ℃ and more than-25 ℃ and the temperature of less than or equal to-25 ℃, and counting the number of the fixed point positions of each temperature area; outputting the temperature zone with the largest positioning quantity in each processing unit;
the temperature adjusting module is used for starting or closing the ground source heat pump of the cold region tunnel anti-freezing heat preservation layer according to the analysis result output by the data processing module; the temperature zone output by the data processing module is greater than or equal to 0 ℃, and the first ground source heat pump and the second ground source heat pump are turned off; the temperature zone output by the data processing module is a temperature zone which is smaller than 0 ℃ and larger than-25 ℃, and only the first ground source heat pump is started; and when the temperature zone output by the data processing module is less than or equal to the temperature zone of minus 25 ℃, starting the first ground source heat pump and the second ground source heat pump.
Preferably, the first step further includes a step of screening the abnormal data, and eliminating a maximum value and a minimum value of the same fixed point position monitoring value in each processing unit.
Preferably, the fixed point position of each processing unit at least comprises 30-100 fixed points of the tunnel arch ring part, 30-100 fixed points of the side wall part and 30-100 fixed points of the bottom part.
The invention at least comprises the following beneficial effects:
the cold region tunnel anti-freezing heat preservation layer provided by the invention adopts an active heating and passive heat preservation double-line heat preservation method, so that the effect of anti-freezing heat preservation can be achieved, the problem of tunnel freezing injury is avoided, and energy sources can be saved;
secondly, the active heating module of the cold region tunnel anti-freezing heat-insulating layer provided by the invention adopts the ground source heat pump to heat, and compared with a cable type heat-insulating heating system, the active heating module can save operation and management cost;
thirdly, the active heating module and the passive heat preservation module of the cold region tunnel anti-freezing heat preservation layer provided by the invention do not need to burn fuel, have no greenhouse gas emission, and are environment-friendly;
fourthly, the heat preservation system based on the cold region tunnel anti-freezing heat preservation layer provided by the invention can automatically measure and automatically adjust, thereby greatly reducing the later operation and management cost of the tunnel.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of the cold area tunnel anti-freezing heat-insulating layer according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an active heat supply module according to another embodiment of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 and 2, the present invention provides an antifreezing heat insulation layer for a tunnel in a cold region, comprising:
an active heating module comprising a heat exchange tube loop 10, a ground source heat pump, a heating tube loop, and a heating assembly; the heat supply pipe loop comprises a first heat supply pipe loop 1 and a second heat supply pipe loop 3, the first heat supply pipe loop 1 is arranged between a primary lining 4 and a secondary lining in an inverted arch shape in a disc mode, a water supply interface and a water return interface of the first heat supply pipe loop 1 are arranged on one side of a tunnel, the second heat supply pipe loop 3 is arranged on the outer surface layer of the primary lining in an inverted arch shape in a disc mode, and the water supply interface and the water return interface of the second heat supply pipe loop 3 are arranged on the other side of the tunnel; the heat exchange pipe loop 10 is paved in a buried depth, performs heat exchange with underground rock and absorbs heat, and comprises a first heat exchange pipe loop 101 and a second heat exchange pipe loop 102, wherein the first heat supply pipe loop 1 is communicated with the first heat exchange pipe loop 101 through a first ground source heat pump 5, and the heat absorbed by the first heat exchange pipe loop 101 is lifted through the first ground source heat pump 5, so that the first heat supply pipe loop 1 reaches a certain temperature requirement, and the temperature of a tunnel first lining 4 and a tunnel second lining is raised; the second heat supply pipe loop 3 is communicated with the second heat exchange pipe loop 102 through a second ground source heat pump 11, and heat absorbed by the second heat exchange pipe loop 102 is lifted through the second ground source heat pump 11, so that the second heat supply pipe loop 3 reaches a certain temperature requirement, and the temperature of the first lining 4 of the tunnel is raised; the heat supply component is buried below the ground of the tunnel and is positioned above the heat exchange tube loop 10, absorbs the heat of the heat exchange tube loop 10 and supplies heat to the ground of the tunnel;
the passive heat-insulating module 2 is an inverted arch-shaped heat-insulating layer arranged outside the second heating pipe loop 3.
In the above technical solution, the active heat supply module is a ground source heat pump type heating system, where a first heat exchange tube loop 101 and a second heat exchange tube loop 102 are laid at a distance from a tunnel portal and have enough burial depth, when a heat transfer circulation medium circulates in the heat exchange tube loop 10, heat exchange is performed with underground rock, and heat is absorbed, and the absorbed heat is respectively lifted by the first ground source heat pump 5 and the second ground source heat pump 11, so that the heat transfer circulation medium in the first heat supply tube loop 1 and/or the second heat supply tube loop 3 reaches a certain temperature requirement, and the heat transfer circulation medium is subjected to primary lining, secondary lining and intra-tunnel heating in the heat supply tube; while the heat exchange tube loop 10 surface heat energy is partially absorbed by the heating assembly for heating the tunnel floor.
In the above-mentioned technical scheme, initiative heat supply module divide into two independent return circuits, and passive heat preservation module 2 is independent of initiative heat supply module simultaneously, and under the prerequisite that passive heat preservation module 2 played the cold effect always, it is different through the combination of initiative heat supply module and passive heat preservation module 2, and this cold district tunnel prevents frostbite the heat preservation and can realize multiple winter protection cold-proof mode, includes: only the passive heat preservation module 2 action mode, the passive heat preservation module 2 and one path of active heat supply module action mode at the same time, and the passive heat preservation module 2 and two paths of active heat supply modules action mode at the same time so as to cope with climates with different cold degrees.
As shown in fig. 1, in one technical scheme, the heat supply assembly comprises a primary heat conduction layer 9 and a secondary heat conduction and storage layer which are arranged from top to bottom, wherein the secondary heat conduction and storage layer comprises heat conduction components and heat storage components 8 which are arranged in a crossing manner along the direction of a tunnel cross path, and the heat conduction components comprise a first heat conduction layer 7 and a second heat conduction layer 6 which are arranged from top to bottom; the primary heat conduction layer 9 is a refractory brick layer, the first heat conduction layer 7 is a concrete layer, and the second heat conduction layer 6 is a common carbon steel layer with carbon content of 1%; the heat storage member 8 is formed by stacking porous bricks.
In the technical scheme, the heat supply assembly adopts a structure with heat supply and heat storage at the same time, when the active heat supply module works, one part of heat absorbed from the heat exchange tube loop supplies heat to the ground of the tunnel in real time, and the other part of heat is stored by the heat storage part, so that the active heat supply module is standby when not working. The arrangement of the heat storage component 8 provides a larger operation range for monitoring feedback, and due to the heat storage function of the heat storage component 8, the rapid decrease of the temperature in the tunnel can be delayed in a certain time interval, so that a larger range is strived for monitoring feedback.
In one of the technical schemes, the inverted arch-shaped heat-insulating layer is made of one or a combination of a plurality of polystyrene foam plates, polyurethane foam, glass fiber heat-insulating cotton, inner wall heat-insulating paint, xps extrusion molding and vitrified microbead heat-insulating materials, and the passive heat-insulating module 2 has the functions of continuously playing the roles of preventing freezing and keeping warm, has small volume weight and reduces the structural load.
As shown in fig. 1, in one of the technical solutions, the outside of the passive heat-preserving module is further provided with a waterproof layer 12, the thickness of the waterproof layer 12 is not more than 4cm, so as to protect the active heat-supplying module and the passive heat-preserving module 2, and also resist slight vibration.
In one embodiment, shown in FIG. 1, the waterproof layer 12 is a set-accelerating mortar based on cement and sodium silicate, and has high impermeability.
The invention further claims a heat preservation system of the cold region tunnel anti-freezing heat preservation layer, which comprises:
the real-time air temperature monitoring module is used for monitoring the air temperatures of a plurality of monitoring points in the tunnel in real time;
the data processing module is used for analyzing the air temperature value monitored by the real-time air temperature monitoring module and outputting an analysis result; the data processing module counts the average air temperature value of the same fixed point position in each processing unit by taking each time period of 10-30 min as one processing unit from the monitoring time; dividing the average air temperature value of all fixed point positions of each processing unit into three temperature areas with the temperature of more than or equal to 0 ℃, the temperature of less than 0 ℃ and more than-25 ℃ and the temperature of less than or equal to-25 ℃, and counting the number of the fixed point positions of each temperature area; outputting the temperature zone with the largest positioning quantity in each processing unit;
the temperature adjusting module is used for starting or closing the ground source heat pump of the cold region tunnel anti-freezing heat preservation layer according to the analysis result output by the data processing module; the temperature zone output by the data processing module is greater than or equal to 0 ℃, and the first ground source heat pump and the second ground source heat pump are turned off; the temperature zone output by the data processing module is a temperature zone which is smaller than 0 ℃ and larger than-25 ℃, and only the first ground source heat pump is started; and when the temperature zone output by the data processing module is less than or equal to the temperature zone of minus 25 ℃, starting the first ground source heat pump and the second ground source heat pump.
According to the technical scheme, based on the heat preservation system of the cold region tunnel anti-freezing heat preservation layer, real-time heat supply is not needed, the active heat supply module is started only when the temperature of the monitored region enters a specific temperature region range, and one or two active heat supply modules are selected to be started according to different monitored temperature region ranges, so that tunnel operation management cost is greatly saved.
In one of the technical schemes, the first step further comprises a step of screening abnormal data, a maximum value and a minimum value of the monitoring value of the same fixed point position in each processing unit are removed, the accuracy of the average temperature value of each fixed point position is improved, and an accurate temperature region range is fed back.
In one of the technical schemes, the fixed point position of each processing unit at least comprises 30-100 fixed points of the tunnel arch ring part, 30-100 fixed points of the side wall part and 30-100 fixed points of the bottom, and the plurality of fixed points are arranged to be favorable for outputting accurate temperature areas so as to reasonably schedule the opening of the active heat supply module.
As described above, according to the present invention, the present invention includes at least the following advantageous effects:
the cold region tunnel anti-freezing heat preservation layer provided by the invention adopts an active heating and passive heat preservation double-line heat preservation method, so that the effect of anti-freezing heat preservation can be achieved, the problem of tunnel freezing injury is avoided, and energy sources can be saved;
secondly, the active heating module of the cold region tunnel anti-freezing heat-insulating layer provided by the invention adopts the ground source heat pump to heat, and compared with a cable type heat-insulating heating system, the active heating module can save operation and management cost;
thirdly, the active heating module and the passive heat preservation module of the cold region tunnel anti-freezing heat preservation layer provided by the invention do not need to burn fuel, have no greenhouse gas emission, and are environment-friendly;
fourthly, the heat preservation system based on the cold region tunnel anti-freezing heat preservation layer provided by the invention can automatically measure and automatically adjust, thereby greatly reducing the later operation and management cost of the tunnel.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (5)
1. The heat preservation system of cold district tunnel heat preservation that prevents frostbite, its characterized in that, heat preservation system is based on following heat preservation, the heat preservation includes:
the active heat supply module comprises a heat exchange tube loop, a ground source heat pump, a heat supply tube loop and a heat supply assembly; the heat supply pipe loop comprises a first heat supply pipe loop and a second heat supply pipe loop, the first heat supply pipe loop is arranged between the primary lining and the secondary lining in an inverted arch shape in a disc mode, a water supply interface and a water return interface of the first heat supply pipe loop are arranged on one side of the tunnel, the second heat supply pipe loop is arranged on the outer surface layer of the primary lining in an inverted arch shape in a disc mode, and the water supply interface and the water return interface of the second heat supply pipe loop are arranged on the other side of the tunnel; the heat exchange pipe loop is paved in a buried depth, performs heat exchange with underground rock and absorbs heat, and comprises a first heat exchange pipe loop and a second heat exchange pipe loop, wherein the first heat supply pipe loop is communicated with the first heat exchange pipe loop through a first ground source heat pump, and the heat absorbed by the first heat exchange pipe loop is lifted through the first ground source heat pump, so that the first heat supply pipe loop reaches a certain temperature requirement, and the temperature of a first lining and a second lining of a tunnel is raised; the second heat supply pipe loop is communicated with the second heat exchange pipe loop through a second ground source heat pump, and heat absorbed by the second heat exchange pipe loop is lifted through the second ground source heat pump, so that the second heat supply pipe loop reaches a certain temperature requirement, and the temperature of the first lining of the tunnel is raised; the heat supply component is buried below the ground of the tunnel and is positioned above the heat exchange tube loop to absorb heat of the heat exchange tube loop and supply heat for the ground of the tunnel;
the passive heat preservation module is an inverted arch-shaped heat preservation layer arranged on the outer side of the second heat supply pipe loop;
the heat supply assembly comprises a primary heat conduction layer and a secondary heat conduction and storage layer which are arranged from top to bottom, wherein the secondary heat conduction and storage layer comprises heat conduction components and heat storage components which are arranged in a crossing manner along the direction of a tunnel cross path, and the heat conduction components comprise a first heat conduction layer and a second heat conduction layer which are arranged from top to bottom; the primary heat conduction layer is a refractory brick layer, the first heat conduction layer is a concrete layer, and the second heat conduction layer is a common carbon steel layer with carbon content of 1%; the heat storage part is formed by piling porous bricks;
the heat preservation system comprises:
the real-time air temperature monitoring module is used for monitoring the air temperatures of a plurality of monitoring points in the tunnel in real time;
the data processing module is used for analyzing the air temperature value monitored by the real-time air temperature monitoring module and outputting an analysis result; the data processing module counts the average air temperature value of the same fixed point position in each processing unit by taking each time period of 10-30 min as one processing unit from the monitoring time; dividing the average air temperature value of all fixed point positions of each processing unit into three temperature areas with the temperature of more than or equal to 0 ℃, the temperature of less than 0 ℃ and more than-25 ℃ and the temperature of less than or equal to-25 ℃, and counting the number of the fixed point positions of each temperature area; outputting the temperature zone with the largest positioning quantity in each processing unit;
the temperature adjusting module is used for starting or closing the ground source heat pump of the cold region tunnel anti-freezing heat preservation layer according to the analysis result output by the data processing module; the temperature zone output by the data processing module is greater than or equal to 0 ℃, and the first ground source heat pump and the second ground source heat pump are turned off; the temperature zone output by the data processing module is a temperature zone which is smaller than 0 ℃ and larger than-25 ℃, and only the first ground source heat pump is started; the temperature zone output by the data processing module is a temperature zone of less than or equal to minus 25 ℃, and the first ground source heat pump and the second ground source heat pump are started;
the fixed point positions of each processing unit at least comprise 30-100 fixed points of the tunnel arch ring part, 30-100 fixed points of the side wall part and 30-100 fixed points of the bottom.
2. The insulation system of claim 1, wherein the inverted arch-shaped insulation layer is made of one or a combination of several of polystyrene foam plates, polyurethane foam, glass fiber insulation cotton, interior wall insulation paint, xps extruded and vitrified micro bubble insulation materials.
3. The insulation system of claim 2, wherein a waterproof layer is further provided on the outside of the passive insulation module, and the thickness of the waterproof layer is not more than 4cm.
4. A thermal insulation system according to claim 3, wherein the water barrier is a set-accelerating mortar based on cement and sodium silicate.
5. The thermal insulation system of claim 4, further comprising a step of screening the anomaly data to eliminate a maximum and a minimum of the monitored values for the same setpoint position in each processing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110832058.2A CN113482672B (en) | 2021-07-22 | 2021-07-22 | Cold region tunnel anti-freezing heat preservation and heat preservation system based on heat preservation |
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| CN202110832058.2A CN113482672B (en) | 2021-07-22 | 2021-07-22 | Cold region tunnel anti-freezing heat preservation and heat preservation system based on heat preservation |
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| CN113482672B true CN113482672B (en) | 2024-03-12 |
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| CN101672188A (en) * | 2009-09-23 | 2010-03-17 | 同济大学 | Lining heat system used at tunnel portal |
| CN204877506U (en) * | 2015-08-31 | 2015-12-16 | 长安大学 | Indoor test device in han qu tunnel |
| JP2017075487A (en) * | 2015-10-14 | 2017-04-20 | 株式会社大林組 | Burial structure and method for cable piping in tunnel lining concrete |
| CN106437793A (en) * | 2016-12-16 | 2017-02-22 | 绍兴文理学院 | Energy tunnel inverted arch combined type ground temperature energy antifreezing and heating system |
| CN109209449A (en) * | 2018-10-11 | 2019-01-15 | 淮阴工学院 | A kind of cold area's railway tunnel intelligent heat preserving system and its control method |
| CN209212248U (en) * | 2018-11-21 | 2019-08-06 | 中铁十一局集团第五工程有限公司 | Groups of springs component suitable for the stretchable of tunnel-liner and compression |
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