CN116227007B - Cold-region tunnel cold-proof analysis method and device and cold-region tunnel heat preservation system - Google Patents
Cold-region tunnel cold-proof analysis method and device and cold-region tunnel heat preservation system Download PDFInfo
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Abstract
The invention discloses a cold region tunnel cold-proof analysis method and device and a cold region tunnel heat preservation system, and relates to the technical field of tunnels and underground engineering, wherein the method comprises the following steps: determining mechanical structural parameters of a plurality of customized air curtain machines; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal; determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind; dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction; determining installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; determining installation parameters of an intelligent control server; and finally outputting the implementation configuration parameters of the tunnel cold protection. The invention can reduce the potential safety hazard of cold-proof measures in tunnels in cold areas, reduce the implementation cost of the cold-proof measures and improve the cold-proof effect.
Description
Technical Field
The invention relates to the technical field of tunnels and underground engineering, in particular to a cold region tunnel cold-proof analysis method and device and a cold region tunnel heat preservation system.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
At present, the railway tunnel is built and operated in the cold area, but the geographical environment of the cold area is severe, the temperature is especially low in winter, and a large amount of freeze injury of the cold area tunnel is caused.
In the prior art, many cold-proof measures exist, such as a hole reinforcing structure, an air curtain machine, a deep buried drainage facility, a circulating hot water pipeline and the like, but the measures for coping with natural environments are passive in general, the heat spreading and freezing and thawing speed can only be reduced, the cold-proof heat preservation effect is not obvious, the problems that ice hanging, ice diffusion, cracking, falling blocks and the like caused by freezing injury endanger the driving safety of trains still exist in a cold region tunnel, and the implementation cost of the cold-proof measures of the current cold region tunnel is high. Firstly, in the prior art, an air curtain machine is installed at a tunnel opening to prevent cold air flow from invading the interior of a tunnel, and the existing structure of the tunnel opening is generally damaged in the process of installing the air curtain machine, so that potential safety hazards can be caused; secondly, the long paving length of the hot water pipeline easily causes the rise of construction cost and later operation and maintenance cost, the too short paving length of the hot water pipeline is unfavorable for the control of the freezing injury of the tunnel, and the implementation of adding the circulating hot water pipeline is difficult.
Disclosure of Invention
The embodiment of the invention provides a cold-zone tunnel cold-proof analysis method, which is used for reducing the potential safety hazard of cold-zone tunnel cold-proof measures, reducing the implementation cost of the cold-zone tunnel cold-proof measures, improving the cold-proof effect and providing technical guidance for the implementation of the cold-proof measures, and comprises the following steps:
acquiring physical structure data of a tunnel; the physical structure data of the tunnel comprises physical structure data of a tunnel portal;
determining mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal;
establishing a tunnel thermodynamic model in a cold region; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind; the air curtain is an air interlayer formed when the customized air curtain machine operates;
determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model;
dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction;
determining installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit, wherein the installation parameters comprise an installation position and an installation mode;
Determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler; the installation parameters of the intelligent control server comprise the installation position of the intelligent control server, a power supply mode, a connection mode with a temperature sensor, a wind speed and direction sensor, a boiler and a customized air curtain machine, and the intelligent control server is used for adjusting the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor;
and determining implementation configuration parameters of tunnel cold prevention according to the mechanical structure parameters of the customized air curtain machine, the temperature sensor of each hot water pipeline unit, the installation parameters of the boiler and the installation parameters of the intelligent control server.
The embodiment of the invention provides a cold region tunnel heat preservation system, which is used for reducing the potential safety hazard of cold region tunnel cold-proof measures, reducing the implementation cost of the cold region tunnel cold-proof measures and improving the cold-proof effect, and comprises the following steps: the intelligent control system comprises a plurality of customized air curtain machines, a hot water pipeline, a boiler, a temperature sensor, an air speed and direction sensor and an intelligent control server;
The customized air curtain machine is arranged above the tunnel portal, and mechanical structure parameters of the customized air curtain machine are matched with physical structure data of the tunnel portal;
the hot water pipeline extends from the tunnel portal to be paved inside the tunnel, and the paving total length of the hot water pipeline is determined by the cold region tunnel cold-proof analysis method;
the boiler is used for heating a hot water pipeline;
the temperature sensors are arranged in the tunnel in a multipoint arrangement mode and are used for acquiring temperature data in the tunnel;
the wind speed and direction sensor adopts a multipoint arrangement mode and is arranged in the tunnel and used for collecting wind speed and direction data in the tunnel;
the intelligent control server is arranged at the tunnel portal and used for reading data detected by the temperature sensor and the wind speed and wind direction sensor and adjusting operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the wind speed and wind direction sensor.
The embodiment of the invention also provides a cold region tunnel cold-proof analysis device, which is used for reducing the potential safety hazard of cold region tunnel cold-proof measures, reducing the implementation cost of the cold region tunnel cold-proof measures, improving the cold-proof effect and providing technical guidance for the implementation of the cold-proof measures, and comprises the following steps:
The tunnel data acquisition module is used for acquiring physical structure data of the tunnel; the physical structure data of the tunnel comprises physical structure data of a tunnel portal;
the customized air curtain machine mechanical structure parameter determining module is used for determining mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal;
the hot water pipeline paving total length determining module is used for establishing a cold region tunnel thermodynamic model; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind; the air curtain is an air interlayer formed when the customized air curtain machine operates; determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model;
the installation parameter determining module is used for dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction; determining installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode; determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler; the installation parameters of the intelligent control server comprise the installation position of the intelligent control server, a power supply mode, a connection mode with a temperature sensor, a wind speed and direction sensor, a boiler and a customized air curtain machine, and the intelligent control server is used for adjusting the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor;
And the installation implementation configuration parameter output module is used for determining the implementation configuration parameters of tunnel cold protection according to the mechanical structure parameters of the customized air curtain machine, the temperature sensor of each hot water pipeline unit, the installation parameters of the boiler and the installation parameters of the intelligent control server.
The embodiment of the invention also provides computer equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the cold region tunnel cold-proof analysis method is realized when the processor executes the computer program.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the cold-proof analysis method of the tunnel in the cold region when being executed by a processor.
The embodiment of the invention also provides a computer program product, which comprises a computer program, wherein the computer program realizes the cold-proof analysis method for the tunnel in the cold region when being executed by a processor.
In the cold-proof analysis method for the tunnel in the cold region, mechanical structure parameters of a plurality of customized air curtain machines are determined according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal, so that the existing structure of the tunnel portal is not required to be damaged in the installation process of the customized air curtain machine, and the potential safety hazard of cold region tunnel cold-proof measures is reduced;
Meanwhile, in the embodiment of the invention, a tunnel thermodynamic model in a cold region is established; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind formed when the customized air curtain machine operates; the total length of the hot water pipeline paved is determined by utilizing the cold region tunnel thermodynamic model, so that the proper paving length of the hot water pipeline can be actively determined before cold-proof measures are implemented, the cost of manual trial and error is removed, and the implementation cost of the cold region tunnel cold-proof measures is reduced;
in the embodiment of the invention, the total paving length of the hot water pipeline is divided into a plurality of hot water pipeline units along the tunnel direction; according to the hot water pipeline units, determining the installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode; in the embodiment of the invention, each section of hot water pipeline is provided with a corresponding boiler and a corresponding temperature sensor, and the hot water pipeline is controlled in sections, so that the high efficiency and the energy conservation are realized;
in conclusion, the cold-proof analysis method for the tunnel in the cold region provides powerful theoretical technical guidance for cold-proof heat preservation measures.
The tunnel heat preservation system in the cold region comprises: the intelligent control system comprises a plurality of customized air curtain machines, a hot water pipeline, a boiler, a temperature sensor, an air speed and direction sensor and an intelligent control server; the customized air curtain machine is arranged above the tunnel portal, and the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal, so that the customized air curtain machine does not need to damage the existing structure of the tunnel portal in the installation process, and the potential safety hazard of cold-region tunnel cold-proof measures is reduced;
the hot water pipeline extends from the tunnel portal to be paved into the tunnel, and the paving total length of the hot water pipeline is determined by the cold region tunnel cold-proof analysis method, so that the proper paving length of the hot water pipeline can be actively determined before cold-proof measures are implemented, the cost of manual trial and error is removed, and the implementation cost of the cold region tunnel cold-proof measures is reduced;
the hot water pipelines are paved in sections, and each section of hot water pipeline is provided with a boiler and a temperature sensor; the boiler is used for heating a hot water pipeline; the temperature sensors are arranged in the tunnel in a multipoint arrangement mode and are used for acquiring temperature data in the tunnel; the wind speed and direction sensor adopts a multipoint arrangement mode and is arranged in the tunnel and used for collecting wind speed and direction data in the tunnel; the intelligent control server is arranged at the tunnel portal and used for reading data detected by the temperature sensor and the wind speed and wind direction sensor and adjusting operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the wind speed and wind direction sensor; in the embodiment of the invention, each section of hot water pipeline is provided with a corresponding boiler and a corresponding temperature sensor, and the hot water pipeline is controlled in sections, so that the high efficiency and the energy conservation are realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic flow chart of a cold-zone tunnel cold-proof analysis method in an embodiment of the invention;
FIG. 2 is a diagram showing an embodiment of a cold-zone tunnel cold-proof analysis method according to the present invention;
FIG. 3 is a schematic diagram of an embodiment of a cold-zone tunnel cold-proof analysis method according to the present invention;
FIG. 4 is a diagram illustrating an embodiment of a cold-zone tunnel cold-proof analysis method according to the present invention;
FIG. 5 is a schematic diagram showing an embodiment of a cold-zone tunnel cold-proof analysis method according to the present invention;
FIG. 6 is a schematic diagram of a tunnel insulation system in a cold region according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a cold-zone tunnel cold-proof analysis device according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
The applicant finds that a plurality of cold-proof measures exist in the prior art, such as a hole reinforcing structure, an air curtain machine, a deep buried drainage facility, a circulating hot water pipeline and the like, but the measures for coping with natural environments are passive in general, the heat spreading and freezing and thawing speed can only be reduced, the cold-proof heat preservation effect is not obvious, the problems of ice hanging, ice diffusion, cracking, block falling and the like caused by freezing injury endanger the driving safety of trains still exist in a cold region tunnel, and the cold-proof measures of the current cold region tunnel are high in implementation cost. Based on the method and the device, the applicant provides a cold-region tunnel cold-proof analysis method and device and a cold-region tunnel heat preservation system.
Fig. 1 is a schematic flow chart of a cold-zone tunnel cold-proof analysis method according to an embodiment of the invention, as shown in fig. 1, the method includes:
step 101, obtaining physical structure data of a tunnel; the physical structure data of the tunnel comprises physical structure data of a tunnel portal;
102, determining mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal;
step 103, establishing a tunnel thermodynamic model in the cold region; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind, and the air curtain is an air interlayer formed when a customized air curtain machine operates;
Step 104, determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model;
step 105, dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction;
step 106, determining the installation parameters of the temperature sensor, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode;
step 107, determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler;
and 108, determining implementation configuration parameters of tunnel cold prevention according to the mechanical structure parameters of the customized air curtain machine, the temperature sensor of each hot water pipeline unit, the installation parameters of the boiler and the installation parameters of the intelligent control server.
As can be seen from the flow shown in fig. 1, in the embodiment of the present invention, mechanical structural parameters of a plurality of customized air curtain machines are determined according to physical structural data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal, so that the existing structure of the tunnel portal is not required to be damaged in the installation process of the customized air curtain machine, and the potential safety hazard of cold region tunnel cold-proof measures is reduced; meanwhile, in the embodiment of the invention, a tunnel thermodynamic model in a cold region is established; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind formed when the customized air curtain machine operates; the total length of the hot water pipeline paved is determined by utilizing the cold region tunnel thermodynamic model, so that the proper paving length of the hot water pipeline can be actively determined before cold-proof measures are implemented, the cost of manual trial and error is removed, and the implementation cost of the cold region tunnel cold-proof measures is reduced; in the embodiment of the invention, the total paving length of the hot water pipeline is divided into a plurality of hot water pipeline units along the tunnel direction; according to the hot water pipeline units, determining the installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode; in the embodiment of the invention, a corresponding boiler and a corresponding temperature sensor are arranged for each section of hot water pipeline, the hot water pipeline is controlled in a segmented manner, the high efficiency and the energy conservation are realized, and powerful technical guidance is provided for cold-proof heat preservation measures.
The cold-zone tunnel cold-proof analysis method in the embodiment of the invention is explained in detail below.
Firstly, acquiring physical structure data of a tunnel, such as the length of the tunnel, the physical structure data of a longitudinal section of the tunnel and the physical structure data of a tunnel portal; in the implementation process, the laser scanner can be used for collecting three-dimensional point cloud data of the tunnel portal to obtain detailed inner contour data of the tunnel portal, and physical structure data of the tunnel can be obtained by inquiring engineering materials during tunnel construction.
Then, determining mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; and the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal.
During implementation, according to the detailed inner outline data of the tunnel portal, the mechanical structure parameters of the plurality of customized air curtain machines, the mechanical structure data of the brackets of the plurality of customized air curtain machines and the installation mode are respectively determined along the inner outline of the tunnel portal, wherein the mechanical structure parameters of the customized air curtain machines comprise the mechanical structure parameters of the outer shell, the air outlet and the like of the customized air curtain machines.
Fig. 2 is a specific embodiment of a cold area tunnel cold-proof analysis method according to an embodiment of the present invention, as shown in fig. 2, the embodiment of the present invention proposes a special-shaped top-blowing type jet heat preservation mode, a reference 1 in fig. 2 is a mounting position of a plurality of customized air curtain machines, a support 6 and a plurality of customized air curtain machines 1 are mounted on the basis of an existing structure of a tunnel opening, wherein the support 6 and the plurality of customized air curtain machines 1 are matched with physical structure data of the tunnel opening, and the existing structure of the tunnel opening is not required to be damaged, so that potential safety hazards of cold area tunnel cold-proof measures are reduced.
And then establishing a cold region tunnel thermodynamic model, and determining the total paving length of the hot water pipeline by utilizing the cold region tunnel thermodynamic model.
Fig. 3 is a schematic diagram of a cold tunnel thermodynamic model, as shown in fig. 3, according to an embodiment of the present invention.
Referring to fig. 3, a cold region tunnel thermodynamic model is established according to the following formula:
（1）
wherein ,K i 、c i 、T i (i=1、2、3、4)、R i the heat conductivity coefficient, the volume specific heat, the temperature and the radius of the primary lining, the heat insulation layer, the secondary lining and the surrounding rock are respectively,tin order to be able to take time,rfor the distance of the sampling point of the temperature to be measured from the tunnel center point, the outside diameter of the insulating layer in fig. 3 corresponds to the radius of the insulating layer in formula (1), the outside diameter of the primary liner in fig. 3 corresponds to the radius of the primary liner in formula (1), the outside diameter of the secondary liner in fig. 3 corresponds to the radius of the secondary liner in formula (1),L 1 (r,t) The temperature distribution in the tunnel under the combined influence of the air curtain and the train wind is obtained according to the formula (1).
In one embodiment, determining the total length of hot water pipe laying using the cold zone tunnel thermodynamic model may include:
acquiring physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel portal under the action of the air curtain and thermodynamic parameters of primary lining, a heat insulating layer, secondary lining and outer surrounding rock of the tunnel; the physical structure data of the train comprise the area of the train head, the number of train carriages, the speed of the train and the quality of the train; the thermodynamic parameters comprise temperature, heat conductivity coefficient, volume specific heat and convective heat transfer coefficient;
Inputting physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel opening under the action of an air curtain and thermodynamic parameters of primary lining, a heat insulation layer, secondary lining and outer surrounding rock of the tunnel into a cold region tunnel thermodynamic model, determining temperature boundary conditions of the cold region tunnel thermodynamic model by utilizing an air temperature field in the tunnel opening under the common influence of the air curtain and train wind, and calculating and outputting negative temperature length of the tunnel opening section under the common influence of the air curtain and the train wind; the negative temperature length of the tunnel portal section is the tunnel depth length corresponding to the tunnel portal with the temperature of minus zero and the temperature of minus zero;
and determining the total paving length of the hot water pipeline according to the negative temperature length of the tunnel portal section.
For example, in combination with the formula (1), the initial condition of the cold region tunnel thermodynamic model is set according to the following formula (2), and the temperature boundary condition of the cold region tunnel thermodynamic model is determined according to the following formula (3) by utilizing the air temperature field in the tunnel under the common influence of the air curtain and the train wind:
initial conditions:
T i =T 0i ,R i <r<R i+1 ,t=0,i=1,2,3,4 （2）
temperature boundary conditions:
（3）
in the formulas (2) and (3),K i 、c i 、T i (i=1、2、3、4)、R i 、T oi the heat conductivity coefficient, the volume specific heat, the temperature, the radius and the initial temperature of the primary lining, the heat insulation layer, the secondary lining and the surrounding rock are respectively, rFor the distance of the sampling point of the temperature to be measured from the tunnel center point,his the convective heat transfer coefficient of air and surrounding rock,A(t)to address the air temperature field in the tunnel irrespective of the effects of train wind,respectively the heat transfer function between adjacent media,Ais the area of the head of the train,ρin order to achieve an air density of the air,cis the specific heat of air, and the air is heated,μas the thermal conductivity of the surrounding rock,xfor the length of the heat exchange it is,Qthe heat dissipation amount per unit length of the train per unit time,Lfor the length of the train,B(t) For the air temperature field in the tunnel under the influence of train wind,T m as the annual average temperature in the tunnel,T n as the annual temperature amplitude within the tunnel,tin order to be able to take time,ηas the phase of the day,T w the temperature of the wall surface of the train is the temperature of the wall surface of the train,Sis the perimeter of the tunnel section; wherein the method comprises the steps ofA(t)、B(t) Can be obtained by fitting calculation according to actual statistical data,T 0 the temperature of the mixed air at the tunnel portal section after the formation of the air curtain,T 0 the heat dissipation capacity of the train in unit time unit length can be calculated according to the heat balance principle by utilizing the air quantity which is invaded into the tunnel when the customized air curtain machine is not in operation, the air quantity which is invaded into the tunnel when the customized air curtain machine is in operation, the external temperature of the tunnel, the jet air flow temperature of the customized air curtain machine, the jet air flow speed of the customized air curtain machine, the jet air flow angle of the customized air curtain machine, the physical structure parameters and the turbulence coefficient of the tunnel and the like QThe air resistance heat energy is calculated according to the air resistance heat, the brake heat dissipation, the length of the train, the air resistance, the distance from the start of the train to the rest, the total mass of the train, the speed of the train and the like.
Fig. 4 is a specific embodiment of a cold area tunnel cold-proof analysis method according to an embodiment of the present invention, as shown in fig. 4, curve 1 may reflect a distribution rule of a temperature field in a tunnel under the influence of air curtain and train wind, and according to curve 1, it may be determined that a total length of hot water pipeline pavement is about 67 meters.
After the total paving length of the hot water pipeline is determined, dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction, and determining the installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode.
In one embodiment, determining the temperature sensor of each hot water pipe unit, the installation parameters of the boiler, from a plurality of hot water pipe units may include:
according to the plurality of hot water pipe units, it is determined that each hot water pipe unit is controlled by one boiler, and each hot water pipe unit is installed with one temperature sensor.
For example, according to the actual environment inside the tunnel, the position of the car-avoidance hole in the tunnel is determined, according to the position of the car-avoidance hole, the hot water pipeline is laid in sections, the length of each hot water pipeline unit is determined, and the installation position, the installation mode and the connection wiring of the temperature sensor and the wind speed and direction sensor of each hot water pipeline unit are determined.
Because the cold-proof measures of paving the hot water pipeline in sections are adopted, only the hot water pipeline with lower temperature at the tunnel position can be started according to the temperature data detected by each hot water pipeline unit temperature sensor in the actual tunnel, and the hot water pipeline is controlled in sections, so that the high-efficiency energy-saving effect is realized.
In one embodiment, each hot water piping unit arrangement employs brine as the circulation medium. The freezing temperature of the brine is below minus ten ℃, so that the influence of medium freezing in the hot water pipeline of the tunnel in the cold region on the working of the hot water pipeline can be effectively prevented.
Determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler; the installation parameters of the intelligent control server comprise the installation position of the intelligent control server, a power supply mode, a connection mode with a temperature sensor, a wind speed and direction sensor, a boiler and a customized air curtain machine, and the intelligent control server is used for adjusting the operation control parameters of the boiler and the customized air curtain machine according to data detected by the temperature sensor and data detected by the wind speed and direction sensor.
And finally, determining implementation configuration parameters of tunnel cold prevention according to mechanical structure parameters of the customized air curtain machine, temperature sensors of each hot water pipeline unit, installation parameters of the boiler and installation parameters of the intelligent control server, namely outputting a tunnel cold prevention implementation specific scheme for theoretical technical guidance of tunnel cold prevention.
For example, the intelligent control server is arranged at a position near the tunnel portal, and is connected with all the customized air curtain machines, all the boilers, all the temperature sensors and all the wind speed and direction sensors, and the operation control parameters of the boilers and the customized air curtain machines are adjusted according to the data detected by the temperature sensors and the data detected by the wind speed and direction sensors.
In one embodiment, the intelligent control server can adjust the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor in the following manner:
when the temperature detected by any one of the temperature sensors is lower than a preset temperature, adjusting the operation control parameters of the customized air curtain machine;
when a preset time length of the customized air curtain machine is started, sequentially reading the temperature detected by each temperature sensor, and determining a hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature;
And starting the boiler of the hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature.
When the method is implemented, the customized air curtain machine can be started firstly, the customized air curtain machine can comprise different working gears, such as a high working gear, a medium working gear and a low working gear, and when the temperature detected by any temperature sensor read by the intelligent control server is lower than zero degree, the low working gear of the customized air curtain machine is started firstly; after the customized air curtain machine runs for half an hour, sequentially reading the temperature detected by each temperature sensor, and starting a middle gear of the customized air curtain machine if the temperature is lower than zero; after the customized air curtain machine runs for half an hour again, sequentially reading the temperature detected by each temperature sensor, and starting a high gear of the customized air curtain machine if the temperature is lower than zero; after the customized air curtain machine runs for half an hour again, sequentially reading the temperature detected by each temperature sensor, and if the condition that the temperature is lower than zero exists, starting a boiler of a hot water pipeline corresponding to the temperature sensor with the temperature lower than zero; and so on until all the temperatures detected by all the temperature sensors of the tunnel are above zero. Similarly, when the customized air curtain machine or the boiler is closed, when the detected temperature is higher than zero degree, the corresponding boilers are closed in sequence, the gear of the customized air curtain machine is reduced until the customized air curtain machine is closed, and therefore the operation energy consumption of the tunnel heat preservation system is reduced.
In one embodiment, adjusting operational control parameters of the customized air curtain machine may include:
adjusting working gear parameters of the customized air curtain machine;
according to the law of conservation of momentum and the data detected by the wind speed and direction sensor, the blowing wind direction of the customized air curtain machine is regulated;
and regulating the temperature of the air blown out by the customized air curtain machine according to the law of conservation of energy and the data detected by the wind speed and direction sensor.
In the embodiment of the invention, the air outlet and the air direction regulator of the customized air curtain machine are designed, the intelligent control server can control the wind direction of the hot air by adjusting the wind direction baffle plate, fig. 5 is a specific embodiment of the cold area tunnel cold-proof analysis method in the embodiment of the invention, and fig. 5 is a schematic diagram of the customized air curtain machine, the air direction regulator and the wind direction. For example, the outlet wind direction and the outlet wind temperature of the customized air curtain machine are calculated according to the following formulas.
(1) The wind direction and wind speed calculation method of the blowing wind of the customized air curtain machine comprises the following steps: assume that the cold air speed of entering the tunnel outside the tunnelv 1 Mass ofm 1 Customizing the hot air speed generated by an air curtain machinev 2 Mass ofm 2 According to conservation of momentum, in order to prevent cold air outside the tunnel from entering the tunnel, the horizontal momentum of the cold air entering the tunnel portal is equal to the horizontal momentum of the blown air of the customized air curtain machine, namely:
m 2 ×v 2 ×cosθ=m 1 ×v 1 （4）
Thus customizing the blow-out direction of the air curtain machineθCalculated as follows:
（5）
(2) The temperature calculation method of the blown air of the customized air curtain machine comprises the following steps: in order to ensure that the temperature of the air in the tunnel is not reduced, the energy of hot air generated by the customized air curtain machine is larger than the energy of cold air entering the tunnel mouth, and the original temperature in the tunnel is assumed to beT 0 The cold air temperature at the tunnel portal isT 1 The temperature of the air blown out by the air curtain machine is customized to beT 2 , wherein cSpecific heat capacity is as follows:
c×m 2 ×(T 2 -T 1 )≥c×m 1 ×(T 0 -T 1 ) （6）
thus, the temperature of the blown air of the customized air curtain should satisfy the following formula:
（7）
as shown in fig. 5, the air blown out by the customized air curtain machine adopts a certain inclination angle, and is blown out from the inside of the tunnel to the outside of the tunnel, so that the effect of blocking external cold air flow is achieved, ventilation in the tunnel is not influenced, and the ventilation quality in the tunnel is effectively improved.
In one embodiment, the temperature of the air blown out by the custom curtain machine is zero degrees. Considering that the tunnel section is large, in the prior art, the air outlet speed and the temperature of the air curtain machine are generally improved at the same time, which challenges the performance of the air curtain machine, and a certain degree of air speed attenuation is necessarily present when the air curtain reaches the bottom of the tunnel.
In order to overcome the defect of the cold-proof measure effect in the prior art, the embodiment of the invention also provides a cold region tunnel heat preservation system, which comprises: the intelligent control system comprises a plurality of customized air curtain machines, a hot water pipeline, a boiler, a temperature sensor, an air speed and direction sensor and an intelligent control server;
the customized air curtain machine is arranged above the tunnel portal, and mechanical structure parameters of the customized air curtain machine are matched with physical structure data of the tunnel portal;
the hot water pipeline extends from the tunnel portal to be paved inside the tunnel, and the paving total length of the hot water pipeline is determined by the cold region tunnel cold-proof analysis method; the hot water pipelines are paved in sections, and each section of hot water pipeline is provided with a boiler and a temperature sensor;
the boiler is used for heating a hot water pipeline;
the temperature sensors are arranged in the tunnel in a multipoint arrangement mode and are used for acquiring temperature data in the tunnel;
the wind speed and direction sensor adopts a multipoint arrangement mode and is arranged in the tunnel and used for collecting wind speed and direction data in the tunnel;
the intelligent control server is arranged at the tunnel portal and used for reading data detected by the temperature sensor and the wind speed and wind direction sensor and adjusting operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the wind speed and wind direction sensor.
In one embodiment, each hot water piping unit in the present system is configured to use brine as a circulating medium.
Fig. 6 is a schematic diagram of a cold region tunnel insulation system according to an embodiment of the present invention, and fig. 6 shows:
the plurality of customized air curtain machines 1 obstruct the outside cold air flow from invading the tunnel through the blown vertical strong wind, the position of the tunnel opening is arranged in the tunnel, the mechanical structure parameters of the customized air curtain machines 1 are matched with the physical structure of the tunnel opening, the existing structure of the tunnel is not required to be destroyed during the installation, the customized air curtain machines 1 can be divided into three working gears of high, medium and low, and the working state of the customized air curtain machines 1 is controlled by the intelligent control server 5 under different air temperature conditions;
the hot water pipeline 2 is arranged on the surface of the tunnel lining in a grading manner and a plurality of groups of parallel connection manner, and can adjust the pipeline for actual heating according to the data detected by the temperature sensor 4 in the tunnel;
the boilers 3 are arranged at the positions of the car shelters in the tunnel holes and provide circulating hot water which can be brine, and each boiler 3 controls one section of hot water pipeline;
the temperature field sensors 4 are arranged in a multi-point mode, collect temperature data in a tunnel, and upload the temperature data in the tunnel to the intelligent control server 5 for controlling the working states of the plurality of customized air curtain machines 1 and the heating state of the hot water pipeline 2;
The wind speed and direction sensors adopt a multipoint arrangement mode, collect wind speed and direction data in the tunnel, upload the wind speed and direction data in the tunnel to the intelligent control server 5, and are used for controlling the working states of a plurality of customized air curtain machines 1;
the intelligent control server 5 is installed near the tunnel portal, and the intelligent control server 5 is connected with all the customized air curtain machines 1, all the boilers 3, all the temperature sensors 4 and all the wind speed and direction sensors, and adjusts the operation control parameters of the boilers 3 and the customized air curtain machines 1 according to the data detected by the temperature sensors 4 and the data detected by the wind speed and direction sensors.
The embodiment of the invention provides a special-shaped top-blowing type cooling and heating jet flow heat preservation mode, wherein special-shaped top blowing is performed: the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal, so that the existing structure of the tunnel portal is not damaged, and the potential safety hazard is reduced; cooling and heating: it is meant that the air blown by the custom made air curtain is not necessarily hot air, and may be at a preset temperature, such as warm air, cold air, or zero degrees of air.
In summary, the embodiment of the invention has the following advantages:
1. the embodiment of the invention provides a method for calculating the total paving length of a hot water pipeline, which effectively avoids the problem that the paving length of the hot water pipeline is unreasonable and is beneficial to solving the problem of freezing injury of a tunnel.
2. According to the embodiment of the invention, the working state of the customized air curtain machine and the heating state of the hot water pipeline are intelligently controlled through the temperature data collected in the tunnel, so that the operation energy consumption of the tunnel heat preservation system is effectively reduced.
3. The embodiment of the invention adopts a special-shaped top-blowing type cooling and heating jet flow heat preservation mode, does not damage the original lining structure of the tunnel, is beneficial to maintaining the stability of the tunnel structure, is convenient for the construction of a newly-built tunnel and the repair of the freezing injury of the existing tunnel, reduces the construction cost of a tunnel heat preservation system and expands the application range of the tunnel heat preservation system.
4. The air blown out by the customized air curtain machine adopts a certain inclination angle, and is blown out from the inside of the tunnel to the outside of the tunnel, so that the effect of blocking external cold air flow is achieved, ventilation in the tunnel is not influenced, and the ventilation quality in the tunnel is effectively improved.
5. According to the embodiment of the invention, the hot water pipeline is paved on the surface of the tunnel lining, so that the temperature of the cold air flow which is not blocked is increased, meanwhile, the temperature inside the tunnel is ensured to reach more than zero degree by utilizing the temperature inside the tunnel, and the occurrence of freezing injury of the tunnel is effectively prevented.
The embodiment of the invention also provides a cold-zone tunnel cold-proof analysis device, which is described in the following embodiment. Because the principle of the device for solving the problems is similar to that of a cold region tunnel cold-proof analysis method, the implementation of the device can be referred to the implementation of the method, and the repeated parts are not repeated.
Fig. 7 is a schematic diagram of a cold area tunnel cold-proof analysis device according to an embodiment of the present invention, as shown in fig. 7, the device includes:
a tunnel data acquisition module 701, configured to acquire physical structure data of a tunnel; the physical structure data of the tunnel comprises physical structure data of a tunnel portal;
the customized air curtain machine mechanical structure parameter determining module 702 is configured to determine mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal;
the hot water pipeline paving total length determining module 703 is used for establishing a cold region tunnel thermodynamic model; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind; the air curtain is an air interlayer formed when the customized air curtain machine operates; determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model;
the installation parameter determining module 704 is configured to divide the total length of hot water pipeline laying into a plurality of hot water pipeline units along the tunnel direction; determining installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode; determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler; the installation parameters of the intelligent control server comprise the installation position of the intelligent control server, a power supply mode, a connection mode with a temperature sensor, a wind speed and direction sensor, a boiler and a customized air curtain machine, and the intelligent control server is used for adjusting the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor;
And the installation implementation configuration parameter output module 705 is used for determining the implementation configuration parameters of tunnel cold protection according to the mechanical structure parameters of the customized air curtain machine, the temperature sensor of each hot water pipeline unit, the installation parameters of the boiler and the installation parameters of the intelligent control server.
In one embodiment, the hot water pipe lay total length determination module 703 is specifically configured to:
the tunnel thermodynamic model of the cold region is established according to the following formula:
wherein ,K i 、c i 、T i (i=1、2、3、4)、R i the heat conductivity coefficient, the volume specific heat, the temperature and the radius of the primary lining, the heat insulation layer, the secondary lining and the surrounding rock are respectively,tin order to be able to take time,rthe distance from the sampling point of the temperature to be measured to the central point of the tunnel.
In one embodiment, the hot water pipe lay total length determination module 703 is specifically configured to:
acquiring physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel portal under the action of the air curtain and thermodynamic parameters of primary lining, a heat insulating layer, secondary lining and outer surrounding rock of the tunnel; the physical structure data of the train comprise the area of the train head, the number of train carriages, the speed of the train and the quality of the train; the thermodynamic parameters comprise temperature, heat conductivity coefficient, volume specific heat and convective heat transfer coefficient;
Inputting physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel entrance under the action of an air curtain and thermodynamic parameters of primary lining, a heat insulation layer, secondary lining and outer surrounding rock of the tunnel into a cold region tunnel thermodynamic model, determining temperature boundary conditions of the cold region tunnel thermodynamic model by utilizing an air temperature field in the tunnel under the common influence of the air curtain and train wind, and calculating and outputting negative temperature length of the tunnel entrance under the common influence of the air curtain and the train wind; the negative temperature length of the tunnel portal section is the tunnel depth length corresponding to the tunnel portal with the temperature of minus zero and the temperature of minus zero;
and determining the total paving length of the hot water pipeline according to the negative temperature length of the tunnel portal section.
In one embodiment, each hot water piping unit arrangement employs brine as the circulation medium.
In one embodiment, the installation parameter determination module 704 is specifically configured to:
according to the plurality of hot water pipe units, it is determined that each hot water pipe unit is controlled by one boiler, and each hot water pipe unit is installed with one temperature sensor.
In one embodiment, the intelligent control server adjusts the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor in the following manner:
When the temperature detected by any one of the temperature sensors is lower than a preset temperature, adjusting the operation control parameters of the customized air curtain machine;
when a preset time length of the customized air curtain machine is started, sequentially reading the temperature detected by each temperature sensor, and determining a hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature;
and starting the boiler of the hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature.
In one embodiment, adjusting operational control parameters of a customized air curtain machine includes:
adjusting working gear parameters of the customized air curtain machine;
according to the law of conservation of momentum and the data detected by the wind speed and direction sensor, the blowing wind direction of the customized air curtain machine is regulated;
and regulating the temperature of the air blown out by the customized air curtain machine according to the law of conservation of energy and the data detected by the wind speed and direction sensor.
The embodiment of the invention also provides computer equipment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the cold region tunnel cold-proof analysis method is realized when the processor executes the computer program.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the cold-proof analysis method of the tunnel in the cold region when being executed by a processor.
The embodiment of the invention also provides a computer program product, which comprises a computer program, wherein the computer program realizes the cold-proof analysis method for the tunnel in the cold region when being executed by a processor.
In the cold-proof analysis method for the tunnel in the cold region, mechanical structure parameters of a plurality of customized air curtain machines are determined according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal, so that the existing structure of the tunnel portal is not required to be damaged in the installation process of the customized air curtain machine, and the potential safety hazard of cold region tunnel cold-proof measures is reduced; meanwhile, in the embodiment of the invention, a tunnel thermodynamic model in a cold region is established; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind formed when the customized air curtain machine operates; the total length of the hot water pipeline paved is determined by utilizing the cold region tunnel thermodynamic model, so that the proper paving length of the hot water pipeline can be actively determined before cold-proof measures are implemented, the cost of manual trial and error is removed, and the implementation cost of the cold region tunnel cold-proof measures is reduced; in the embodiment of the invention, the total paving length of the hot water pipeline is divided into a plurality of hot water pipeline units along the tunnel direction; according to the hot water pipeline units, determining the installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode; in the embodiment of the invention, each section of hot water pipeline is provided with a corresponding boiler and a corresponding temperature sensor, and the hot water pipeline is controlled in sections, so that the high efficiency and the energy conservation are realized; in conclusion, the cold-proof analysis method for the tunnel in the cold region provides powerful theoretical technical guidance for cold-proof heat preservation measures.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (14)
1. The cold-proof analysis method for the tunnel in the cold region is characterized by comprising the following steps of:
acquiring physical structure data of a tunnel; the physical structure data of the tunnel comprises physical structure data of a tunnel portal;
determining mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal;
establishing a tunnel thermodynamic model in a cold region; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind, and the air curtain is an air interlayer formed when a customized air curtain machine operates;
determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model;
dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction;
determining installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode;
determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler; the installation parameters of the intelligent control server comprise the installation position of the intelligent control server, a power supply mode, a connection mode with a temperature sensor, a wind speed and direction sensor, a boiler and a customized air curtain machine, and the intelligent control server is used for adjusting the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor;
Determining implementation configuration parameters of tunnel cold prevention according to mechanical structure parameters of the customized air curtain machine, temperature sensors of each hot water pipeline unit, installation parameters of a boiler and installation parameters of an intelligent control server; wherein,
establishing a tunnel thermodynamic model in a cold region, comprising:
the tunnel thermodynamic model of the cold region is established according to the following formula:
，
wherein ,K i 、c i 、T i 、R i (i=1, 2, 3, 4) are the thermal conductivity, volume specific heat, temperature, radius of the primary lining, the thermal insulation layer, the secondary lining and the surrounding rock respectively,tin order to be able to take time,rthe distance from the sampling point of the temperature to be measured to the central point of the tunnel is set;
determining a hot water pipe laying total length using a cold region tunnel thermodynamic model, comprising:
acquiring physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel portal under the action of the air curtain and thermodynamic parameters of primary lining, a heat insulating layer, secondary lining and outer surrounding rock of the tunnel; the physical structure data of the train comprise the area of the train head, the number of train carriages, the speed of the train and the quality of the train; the thermodynamic parameters comprise temperature, heat conductivity coefficient, volume specific heat and convective heat transfer coefficient;
inputting physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel entrance under the action of an air curtain and thermodynamic parameters of primary lining, a heat insulation layer, secondary lining and outer surrounding rock of the tunnel into a cold region tunnel thermodynamic model, determining temperature boundary conditions of the cold region tunnel thermodynamic model by utilizing an air temperature field in the tunnel under the common influence of the air curtain and train wind, and calculating and outputting negative temperature length of the tunnel entrance under the common influence of the air curtain and the train wind; the negative temperature length of the tunnel portal section is the tunnel depth length corresponding to the tunnel portal with the temperature of minus zero and the temperature of minus zero;
And determining the total paving length of the hot water pipeline according to the negative temperature length of the tunnel portal section.
2. The method of claim 1, wherein each hot water piping unit arrangement employs brine as a circulation medium.
3. The method of claim 1, wherein determining the temperature sensor of each hot water piping unit, the installation parameters of the boiler, from the plurality of hot water piping units, comprises:
according to the plurality of hot water pipe units, it is determined that each hot water pipe unit is controlled by one boiler, and each hot water pipe unit is installed with one temperature sensor.
4. The method of claim 1, wherein the intelligent control server adjusts operational control parameters of the boiler and the custom air curtain machine based on data detected by the temperature sensor and data detected by the wind speed and direction sensor in the following manner:
when the temperature detected by any one of the temperature sensors is lower than a preset temperature, adjusting the operation control parameters of the customized air curtain machine;
when a preset time length of the customized air curtain machine is started, sequentially reading the temperature detected by each temperature sensor, and determining a hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature;
And starting the boiler of the hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature.
5. The method of claim 4, wherein adjusting operational control parameters of the customized air curtain machine comprises:
adjusting working gear parameters of the customized air curtain machine;
according to the law of conservation of momentum and the data detected by the wind speed and direction sensor, the blowing wind direction of the customized air curtain machine is regulated;
and regulating the temperature of the air blown out by the customized air curtain machine according to the law of conservation of energy and the data detected by the wind speed and direction sensor.
6. A cold zone tunnel insulation system, comprising: the intelligent control system comprises a plurality of customized air curtain machines, a hot water pipeline, a boiler, a temperature sensor, an air speed and direction sensor and an intelligent control server;
the customized air curtain machine is arranged above the tunnel portal, and mechanical structure parameters of the customized air curtain machine are matched with physical structure data of the tunnel portal;
the hot water pipeline extends from the tunnel portal to be paved inside the tunnel, and the paving total length of the hot water pipeline is determined by the cold region tunnel cold-proof analysis method according to claim 1; the hot water pipelines are paved in sections, and each section of hot water pipeline is provided with a boiler and a temperature sensor;
The boiler is used for heating a hot water pipeline;
the temperature sensors are arranged in the tunnel in a multipoint arrangement mode and are used for acquiring temperature data in the tunnel;
the wind speed and direction sensor adopts a multipoint arrangement mode and is arranged in the tunnel and used for collecting wind speed and direction data in the tunnel;
the intelligent control server is arranged at the tunnel portal and used for reading data detected by the temperature sensor and the wind speed and wind direction sensor and adjusting operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the wind speed and wind direction sensor.
7. The cold zone tunnel insulation system of claim 6, wherein each hot water piping unit arrangement employs brine as a circulating medium.
8. Cold district tunnel winter protection analytical equipment, characterized by includes:
the tunnel data acquisition module is used for acquiring physical structure data of the tunnel; the physical structure data of the tunnel comprises physical structure data of a tunnel portal;
the customized air curtain machine mechanical structure parameter determining module is used for determining mechanical structure parameters of a plurality of customized air curtain machines according to physical structure data of tunnel openings; the mechanical structure parameters of the customized air curtain machine are matched with the physical structure data of the tunnel portal;
The hot water pipeline paving total length determining module is used for establishing a cold region tunnel thermodynamic model; the tunnel thermodynamic model in the cold region reflects the temperature distribution in the tunnel under the common influence of an air curtain and train wind; the air curtain is an air interlayer formed when the customized air curtain machine operates; determining the total paving length of the hot water pipeline by utilizing a cold region tunnel thermodynamic model;
the installation parameter determining module is used for dividing the total paving length of the hot water pipeline into a plurality of hot water pipeline units along the tunnel direction; determining installation parameters of a temperature sensor, an installation parameter of a wind speed and direction sensor and an installation parameter of a boiler of each hot water pipeline unit; the installation parameters comprise an installation position and an installation mode; determining the installation parameters of the intelligent control server according to the physical structure data of the tunnel, the installation parameters of the temperature sensor of each hot water pipeline unit, the installation parameters of the wind speed and direction sensor and the installation parameters of the boiler; the installation parameters of the intelligent control server comprise the installation position of the intelligent control server, a power supply mode, a connection mode with a temperature sensor, a wind speed and direction sensor, a boiler and a customized air curtain machine, and the intelligent control server is used for adjusting the operation control parameters of the boiler and the customized air curtain machine according to the data detected by the temperature sensor and the data detected by the wind speed and direction sensor;
The installation implementation configuration parameter output module is used for determining implementation configuration parameters of tunnel cold protection according to mechanical structure parameters of the customized air curtain machine, temperature sensors of each hot water pipeline unit, installation parameters of the boiler and installation parameters of the intelligent control server; wherein,
the hot water pipeline laying total length determining module is specifically used for:
the tunnel thermodynamic model of the cold region is established according to the following formula:
，
wherein ,K i 、c i 、T i 、R i (i=1, 2, 3, 4) are the thermal conductivity, volume specific heat, temperature, radius of the primary lining, the thermal insulation layer, the secondary lining and the surrounding rock respectively,tin order to be able to take time,rthe distance from the sampling point of the temperature to be measured to the central point of the tunnel is set;
the hot water pipeline laying total length determining module is specifically used for:
acquiring physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel portal under the action of the air curtain and thermodynamic parameters of primary lining, a heat insulating layer, secondary lining and outer surrounding rock of the tunnel; the physical structure data of the train comprise the area of the train head, the number of train carriages, the speed of the train and the quality of the train; the thermodynamic parameters comprise temperature, heat conductivity coefficient, volume specific heat and convective heat transfer coefficient;
inputting physical structure data of a train passing through a tunnel, the temperature of mixed gas at a tunnel entrance under the action of an air curtain and thermodynamic parameters of primary lining, a heat insulation layer, secondary lining and outer surrounding rock of the tunnel into a cold region tunnel thermodynamic model, determining temperature boundary conditions of the cold region tunnel thermodynamic model by utilizing an air temperature field in the tunnel under the common influence of the air curtain and train wind, and calculating and outputting negative temperature length of the tunnel entrance under the common influence of the air curtain and the train wind; the negative temperature length of the tunnel portal section is the tunnel depth length corresponding to the tunnel portal with the temperature of minus zero and the temperature of minus zero;
And determining the total paving length of the hot water pipeline according to the negative temperature length of the tunnel portal section.
9. The apparatus of claim 8, wherein each hot water piping unit is provided with brine as a circulating medium.
10. The apparatus of claim 8, wherein the installation parameter determination module is specifically configured to:
according to the plurality of hot water pipe units, it is determined that each hot water pipe unit is controlled by one boiler, and each hot water pipe unit is installed with one temperature sensor.
11. The apparatus of claim 8, wherein the intelligent control server adjusts operational control parameters of the boiler and the customized air curtain machine based on data detected by the temperature sensor and data detected by the wind speed and direction sensor in the following manner:
when the temperature detected by any one of the temperature sensors is lower than a preset temperature, adjusting the operation control parameters of the customized air curtain machine;
when a preset time length of the customized air curtain machine is started, sequentially reading the temperature detected by each temperature sensor, and determining a hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature;
and starting the boiler of the hot water pipeline unit corresponding to the temperature sensor with the temperature still lower than the preset temperature.
12. The apparatus of claim 11, wherein adjusting operational control parameters of the customized air curtain machine comprises:
adjusting working gear parameters of the customized air curtain machine;
according to the law of conservation of momentum and the data detected by the wind speed and direction sensor, the blowing wind direction of the customized air curtain machine is regulated;
and regulating the temperature of the air blown out by the customized air curtain machine according to the law of conservation of energy and the data detected by the wind speed and direction sensor.
13. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 5 when executing the computer program.
14. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when executed by a processor, implements the method of any of claims 1 to 5.
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