High-ground-temperature tunnel face construction area ventilation and refrigeration system and refrigeration method

Abstract

The invention relates to a high-ground-temperature tunnel face construction area ventilation and refrigeration system and method, the system comprises a plurality of refrigeration devices, the refrigeration devices are sequentially distributed in the extending direction of a tunnel, the distance between every two adjacent refrigeration devices is equal, and the distance between every two adjacent refrigeration devices is equal to the distance between every two adjacent refrigeration devices. A wired or wireless communication connection is established between every two adjacent refrigeration devices; an air inlet of each refrigerating device is communicated with a tunnel ventilation pipe through a pipeline, and an air outlet of each refrigerating device is communicated with the atmosphere; according to the tunnel cooling system, the multiple refrigerating devices are arranged and used for refrigerating different areas of the tunnel, so that the whole tunnel can be uniformly refrigerated in the construction process, and the situation that high temperature exists locally or the local refrigerating effect is poor is avoided; the technical problem that the temperature in the tunnel cannot be reduced due to the fact that the tunnel is ventilated only through the ventilation pipe is solved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering, and in particular to a ventilation and refrigeration system and a refrigeration method for a high ground temperature tunnel face construction area. Background Art

[0002] During tunnel construction, the tunnel needs to be ventilated to supply air to the tunnel. However, during tunnel construction, due to the influence of tunnel length, geology and external ambient temperature, the temperature in the tunnel may rise to over 40 degrees Celsius. The high temperature environment brings inconvenience to the workers in the tunnel. In the prior art, face sprinkling and cooling tower cooling technologies are usually used. The former is economical and easy to construct, but it causes a high humidity environment in the construction area within a certain range from the face, causing psychological and physical discomfort to the construction workers. At the same time, it is easy to cause short circuits in electronic components or increase the risk of leakage of mechanical equipment, posing hidden dangers to construction safety. The latter Although it can effectively reduce the high temperature in the tunnel, the cost of its equipment application is very expensive. It is more suitable for ultra-high geothermal underground projects (for example: surrounding rock temperature exceeds 70℃ or ambient temperature exceeds 50℃). However, for high geothermal tunnels with surrounding rock temperature of 30℃, ambient temperature between 40-45℃ and high humidity environment, there is still a lack of economical and effective temperature and humidity control technology. If only ventilation pipes are used to ventilate the tunnel to supply air and cool it down, when the tunnel is too long, the heat accumulated in the tunnel cannot be discharged, and the temperature in the tunnel cannot be reduced, which brings inconvenience to tunnel construction and even affects the efficiency of tunnel construction. Summary of the invention

[0003] In order to solve the technical problem in the prior art that only ventilation pipes are used for ventilation and the temperature in the tunnel cannot be reduced, the present invention provides a ventilation and refrigeration system and a refrigeration method for a high ground temperature tunnel face construction area.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A ventilation and refrigeration system for a high ground temperature tunnel face construction area, comprising a plurality of refrigeration devices, the plurality of refrigeration devices being distributed in sequence along the tunnel extension direction, the distance between each two adjacent refrigeration devices being equal, and a communication connection being established between each two adjacent refrigeration devices; the air inlet of each refrigeration device being connected to a tunnel ventilation pipe through a pipeline, and the air outlet of each refrigeration device being connected to the atmosphere; and the serial numbers of the refrigeration devices being defined in sequence starting from the tunnel entrance;

[0006] The first refrigeration device is used to generate a first air cooling signal according to the temperature value of the environment in which the first refrigeration device is located, and perform refrigeration processing according to the first air cooling signal;

[0007] The i+1th refrigeration device is used to obtain the i-th air cooling signal generated by the i-th refrigeration device, and generate the i+1th air cooling signal according to the i-th air cooling signal and the temperature value of its own environment, and perform refrigeration processing according to the i+1th air cooling signal; wherein, i∈[1, n-1], n is the total number of the refrigeration devices.

[0008] The beneficial effects of the present invention are as follows: by setting up multiple refrigeration devices, the multiple refrigeration devices are allowed to cool different areas of the tunnel respectively, so that the entire tunnel can be evenly cooled during the construction process, and there will be no situation where there is local high temperature or local refrigeration effect is poor, which solves the technical problem that the temperature in the tunnel cannot be reduced by only using ventilation pipes to ventilate the tunnel. At the same time, a communication connection is also established between two adjacent refrigeration devices, and the refrigeration signal of the i-th refrigeration device will be transmitted to the i+1-th refrigeration device, so that the i+1-th refrigeration device can judge the refrigeration state according to the ambient temperature of the environment in which it is located and the refrigeration signal of the i-th refrigeration device during the refrigeration process, and can obtain the refrigeration status of the i-th refrigeration device in real time through the refrigeration signal of the i-th refrigeration device. In the case that the i-th refrigeration device cannot work, the i+1-th refrigeration device can be used to compensate for the refrigeration, thereby improving the refrigeration effect of the tunnel.

[0009] Furthermore, each of the refrigeration devices includes at least a temperature sensor, a controller, a refrigeration control switch and an air cooler; in each of the refrigeration devices, the temperature sensor is connected to the controller, the controller is connected to the refrigeration control switch, the refrigeration control switch is connected to the air cooler, the air inlet of the air cooler is connected to the tunnel ventilation pipe through a pipeline, and the air outlet of the air cooler is connected to the atmosphere.

[0010] Further, the temperature sensor of the first refrigeration device is used to collect the temperature value of the environment where the first refrigeration device is located;

[0011] The controller of the first refrigeration device is used to obtain the temperature value of the environment where the first refrigeration device is located, and generate the first air cooling signal according to the temperature value of the environment where the first refrigeration device is located, so as to control the working state of the refrigeration control switch of the first refrigeration device according to the first air cooling signal;

[0012] The refrigeration control switch of the first refrigeration device is used to control the start and stop state of the air cooler of the first refrigeration device according to its own working state; the start and stop state is an on state or a stop state;

[0013] The air cooler of the first refrigeration device is used to turn on the first refrigeration device for refrigeration when the air cooler is in an on state; and to stop the first refrigeration device for refrigeration when the air cooler is in a stopped state.

[0014] Further, the first air cooling signal is a first high level signal or a first low level signal;

[0015] The controller of the first refrigeration device is specifically used to compare the temperature value of the environment where the first refrigeration device is located with a preset temperature threshold, and if the temperature value of the environment where the first refrigeration device is located is greater than or equal to the preset temperature threshold, then generate the first high-level signal; if the temperature value of the environment where the first refrigeration device is located is less than the preset temperature threshold, then generate the first low-level signal;

[0016] The refrigeration control switch of the first refrigeration device is specifically used to obtain and determine the category of the first air refrigeration signal. If the first air refrigeration signal is a first high-level signal, the air cooler of the first refrigeration device is controlled to be in an on state according to its own working state; if the first air refrigeration signal is a first low-level signal, the air cooler of the first refrigeration device is controlled to be in a stopped state according to its own working state.

[0017] Further, a wired or wireless communication connection is established between the controller of the i-th refrigeration device and the controller of the (i+1)-th refrigeration device;

[0018] The temperature sensor of the i+1th refrigeration device is used to collect the temperature value of the environment where the i+1th refrigeration device is located;

[0019] The controller of the i+1th refrigeration device is used to obtain the temperature value of the environment in which the i+1th refrigeration device is located, obtain the i-th air cooling signal from the controller of the i-th refrigeration device through wired or wireless communication, and generate the i+1th air cooling signal according to the i-th air cooling signal and the temperature value of the environment in which the controller is located, so as to control the working state of the refrigeration control switch of the i+1th refrigeration device according to the i+1th air cooling signal;

[0020] The refrigeration control switch of the i+1th refrigeration device is used to control the start and stop state of the air cooler of the i+1th refrigeration device according to its own working state;

[0021] The air cooler of the i+1th refrigeration device is used to turn on the i+1th refrigeration device for refrigeration processing when the air cooler is in the on state; when the air cooler is in the stopped state, stop the i+1th refrigeration device for refrigeration processing.

[0022] Further, the i+1th air cooling signal is the i+1th high level signal or the i+1th low level signal, and the i+1th air cooling signal is the i+1th high level signal or the i+1th low level signal;

[0023] The controller of the i+1th refrigeration device is specifically used to calculate the temperature compensation coefficient according to the depth value of the tunnel and the distance value from the i+1th refrigeration device to the tunnel entrance; calculate the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the i+1th refrigeration device is located; compare the temperature design value with the preset temperature threshold and judge the category of the i-th air cooling signal, if the temperature design value is greater than or equal to the preset temperature threshold, generate the i+1th high-level signal; if the temperature design value is less than the preset temperature threshold and the i-th air cooling signal is the i-th high-level signal, generate the i+1th low-level signal; if the temperature design value is less than the preset temperature threshold and the i-th air cooling signal is the i-th low-level signal, generate the i+1th low-level signal;

[0024] The refrigeration control switch of the i+1th refrigeration device is specifically used to obtain and determine the category of the i+1th air refrigeration signal. If the i+1th air refrigeration signal is the i+1th high-level signal, the air cooler of the i+1th refrigeration device is controlled to be in an on state according to its own working state; if the i+1th air refrigeration signal is the i+1th low-level signal, the air cooler of the i+1th refrigeration device is controlled to be in a stopped state according to its own working state.

[0025] Further, the temperature compensation coefficient is calculated according to the depth value of the tunnel and the distance value from the i+1th refrigeration device to the tunnel entrance as follows:

[0026]

[0027] Wherein, α represents the temperature compensation coefficient, D represents the depth value of the tunnel, and L represents the distance value from the refrigeration device to the tunnel entrance.

[0028] Further, the calculation formula for calculating the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the i+1th refrigeration device is located is as follows:

[0029] T2 = T1 (1 + α);

[0030] Wherein, T2 represents the temperature design value, and T1 represents the temperature value of the environment where the (i+1)th refrigeration device is located.

[0031] In order to solve the above technical problems, the present invention also provides a tunnel construction air supply system, the specific technical contents of which are as follows:

[0032] A tunnel construction air supply system comprises the above-mentioned high ground temperature tunnel face construction area ventilation and refrigeration system.

[0033] In order to solve the above technical problems, the present invention also provides a cooling system for ventilation pipes in a tunnel construction area, and its specific technical contents are as follows:

[0034] A method for ventilation and cooling a high geothermal tunnel face construction area adopts the above-mentioned high geothermal tunnel face construction area ventilation and cooling system to cool the air supplied to the high geothermal tunnel face construction area, so as to cool the air in the high geothermal tunnel face construction area. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The structure of a ventilation and cooling system for a high ground temperature tunnel face construction area according to an embodiment of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 2 The structure of a ventilation and cooling system for a high ground temperature tunnel face construction area according to an embodiment of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 3 Schematic diagram of the structure of each refrigeration device in the embodiment of the present invention Figure 1 ;

[0038] Figure 4 Schematic diagram of the structure of each refrigeration device in the embodiment of the present invention Figure 2 ;

[0039] Figure 5 Schematic diagram of the structure of all air coolers in the embodiments of the present invention.

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 1. Cooling pipe, 2. Insulation cotton, 3. Spiral pipe, 4. Compressor, 5. Liquid pump, 6. Condenser, 7. Expansion valve, 8. Liquid storage tank. DETAILED DESCRIPTION

[0042] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0043] like Figure 1 As shown, this embodiment provides a ventilation and cooling system for a high geothermal tunnel face construction area, characterized in that it comprises a plurality of refrigeration devices, which are distributed in sequence along the extension direction of the tunnel, the distance between every two adjacent refrigeration devices is equal, and a wired or wireless communication connection is established between every two adjacent refrigeration devices; the air inlet of each refrigeration device is connected to the tunnel ventilation pipe through a pipeline, and the air outlet of each refrigeration device is connected to the atmosphere; the serial number of each refrigeration device is defined in sequence starting from the tunnel entrance.

[0044] The first refrigeration device is used to generate a first air cooling signal according to the temperature value of the environment in which the first refrigeration device is located, and perform refrigeration processing according to the first air cooling signal;

[0045] The i+1th refrigeration device is used to obtain the i-th air cooling signal generated by the i-th refrigeration device, and generate the i+1th air cooling signal according to the i-th air cooling signal and the temperature value of its own environment, and perform refrigeration processing according to the i+1th air cooling signal; wherein, i∈[1, n-1], n is the total number of the refrigeration devices.

[0046] like Figure 2 As shown, the multiple refrigeration devices are sequentially the first refrigeration device, the second refrigeration device, the third refrigeration device, ..., the nth refrigeration device along the extension direction of the tunnel. Among the multiple refrigeration devices, the distance from the first refrigeration device to the tunnel entrance is greater than the distance from any refrigeration device except the first refrigeration device to the tunnel entrance; wherein C1 is the air cooling signal generated by the first refrigeration device, C2 is the air cooling signal generated by the second refrigeration device, C3 is the air cooling signal generated by the third refrigeration device, and Cn is the air cooling signal generated by the nth refrigeration device.

[0047] The first refrigeration device is used to generate a first air cooling signal according to the temperature value of the environment in which the first refrigeration device is located, and cool the air passing through the first refrigeration device according to the first air cooling signal;

[0048] For example, if the i-th refrigeration device is the first refrigeration device, then the i+1-th refrigeration device is the second refrigeration device, and the second refrigeration device is used to obtain the first air cooling signal from the first refrigeration device through wired or wireless communication, and generate the second air cooling signal according to the first air cooling signal and the temperature value of the environment in which it is located, so as to cool the air passing through the second refrigeration device according to the second air cooling signal, and finally cool the air in the area where the second refrigeration device is located. Similarly, if the i-th refrigeration device is the second refrigeration device, then the i+1-th refrigeration device is the third refrigeration device; if the i+1-th refrigeration device is the n-th refrigeration device, then the i-th refrigeration device is the n-1-th refrigeration device.

[0049] like Figure 3 As shown, in some embodiments, each of the refrigeration devices includes at least a temperature sensor, a controller, a refrigeration control switch and an air cooler; in each of the refrigeration devices, the temperature sensor is connected to the controller, the controller is connected to the refrigeration control switch, the refrigeration control switch is connected to the air cooler, the air inlet of the air cooler is connected to the tunnel ventilation pipe through a pipeline, and the air outlet of the air cooler is connected to the atmosphere.

[0050] In some embodiments, the temperature sensor of the first refrigeration device is used to collect the temperature value of the environment where the first refrigeration device is located;

[0051] The controller of the first refrigeration device is used to obtain the temperature value of the environment where the first refrigeration device is located, and generate the first air cooling signal according to the temperature value of the environment where the first refrigeration device is located, so as to control the working state of the refrigeration control switch of the first refrigeration device according to the first air cooling signal;

[0052] The refrigeration control switch of the first refrigeration device is used to control the start and stop state of the air cooler of the first refrigeration device according to its own working state; the start and stop state is an on state or a stop state;

[0053] The air cooler of the first refrigeration device is used to start cooling the air passing through the air cooler of the first refrigeration device when the air cooler is in the on state; and to stop cooling the air passing through the air cooler of the first refrigeration device when the air cooler is in the off state.

[0054] In some embodiments, the first air cooling signal is a first high level signal or a first low level signal;

[0055] The controller of the first refrigeration device is specifically used to compare the temperature value of the environment where the first refrigeration device is located with a preset temperature threshold, and if the temperature value of the environment where the first refrigeration device is located is greater than or equal to the preset temperature threshold, then generate the first high-level signal; if the temperature value of the environment where the first refrigeration device is located is less than the preset temperature threshold, then generate the first low-level signal;

[0056] The refrigeration control switch of the first refrigeration device is specifically used to obtain and determine the category of the first air refrigeration signal. If the first air refrigeration signal is a first high-level signal, the air cooler of the first refrigeration device is controlled to be in an on state according to its own working state; if the first air refrigeration signal is a first low-level signal, the air cooler of the first refrigeration device is controlled to be in a stopped state according to its own working state.

[0057] In some embodiments, a wired or wireless communication connection is established between the controller of the i-th refrigeration device and the controller of the (i+1)-th refrigeration device;

[0058] The temperature sensor of the i+1th refrigeration device is used to collect the temperature value of the environment where the i+1th refrigeration device is located;

[0059] The controller of the i+1th refrigeration device is used to obtain the temperature value of the environment in which the i+1th refrigeration device is located, obtain the i-th air cooling signal from the controller of the i-th refrigeration device through wired or wireless communication, and generate the i+1th air cooling signal according to the i-th air cooling signal and the temperature value of the environment in which the controller is located, so as to control the working state of the refrigeration control switch of the i+1th refrigeration device according to the i+1th air cooling signal;

[0060] The refrigeration control switch of the i+1th refrigeration device is used to control the start and stop state of the air cooler of the i+1th refrigeration device according to its own working state;

[0061] The air cooler of the i+1th refrigeration device is used to start cooling the air passing through the air cooler of the i+1th refrigeration device when the air cooler is in the on state; and stop cooling the air passing through the air cooler of the i+1th refrigeration device when the air cooler is in the off state.

[0062] like Figure 4As shown, the first refrigeration device at least includes a first temperature sensor, a first controller, a first refrigeration control switch and a first air cooler; in the first refrigeration device, the first temperature sensor is connected to the first controller, the first controller is connected to the first refrigeration control switch, the first refrigeration control switch is connected to the first air cooler, the air inlet of the first air cooler is connected to the tunnel ventilation pipe through a pipeline, and the air outlet of the first air cooler is connected to the atmosphere.

[0063] The first temperature sensor is used to collect the temperature value of the environment where the first refrigeration device is located;

[0064] The first controller is used to obtain the temperature value of the environment where the first refrigeration device is located, and generate a first air cooling signal C1 according to the temperature value of the environment where the first refrigeration device is located, so as to control the working state of the first refrigeration control switch according to the first air cooling signal C1;

[0065] The refrigeration control switch of the first refrigeration device is used to control the start and stop state of the air cooler of the first refrigeration device according to its own working state; the start and stop state is an on state or a stop state;

[0066] The first air cooler is used to start cooling the air passing through the first air cooler when the first air cooler is in the on state; and to stop cooling the air passing through the first air cooler when the first air cooler is in the off state.

[0067] like Figure 4 As shown, when the first refrigeration device is the i-th refrigeration device, the second refrigeration device is the i+1-th refrigeration device. The second refrigeration control switch is used to control the start and stop state of the second air cooler according to its own working state;

[0068] The second refrigeration control switch is used to control the start and stop state of the second air cooler according to its own working state;

[0069] The second air cooler is used to start cooling the air passing through the second air cooler when the second air cooler is in the on state; and to stop cooling the air passing through the second air cooler when the second air cooler is in the off state.

[0070] In some embodiments, the i+1th air cooling signal is the i+1th high level signal or the i+1th low level signal, and the i-th air cooling signal is the i-th high level signal or the i-th low level signal;

[0071] The controller of the i+1th refrigeration device is specifically used to calculate the temperature compensation coefficient according to the depth value of the tunnel and the distance value from the i+1th refrigeration device to the tunnel entrance; calculate the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the i+1th refrigeration device is located; compare the temperature design value with the preset temperature threshold and judge the category of the i-th air cooling signal, if the temperature design value is greater than or equal to the preset temperature threshold, generate the i+1th high-level signal; if the temperature design value is less than the preset temperature threshold and the i-th air cooling signal is the i-th high-level signal, generate the i+1th low-level signal; if the temperature design value is less than the preset temperature threshold and the i-th air cooling signal is the i-th low-level signal, generate the i+1th low-level signal;

[0072] The refrigeration control switch of the i+1th refrigeration device is specifically used to obtain and determine the category of the i+1th air refrigeration signal. If the i+1th air refrigeration signal is the i+1th high-level signal, the air cooler of the i+1th refrigeration device is controlled to be in an on state according to its own working state; if the i+1th air refrigeration signal is the i+1th low-level signal, the air cooler of the i+1th refrigeration device is controlled to be in a stopped state according to its own working state.

[0073] like Figure 4 As shown, if the controller of the i+1th refrigeration device is the third controller, the third controller is specifically used to calculate the temperature compensation coefficient according to the temperature value of the environment where the third refrigeration device is located and the distance value of the third refrigeration device from the tunnel entrance;

[0074] The third controller is also specifically used to calculate the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the third refrigeration device is located; compare the temperature design value calculated from the temperature value of the environment where the third refrigeration device is located with the preset temperature threshold and judge the category of the second air cooling signal, if the temperature design value is greater than or equal to the preset temperature threshold, then generate the third high level signal; if the temperature design value is less than the preset temperature threshold and the second air cooling signal is the second high level signal, then generate the third low level signal; if the temperature design value is less than the preset temperature threshold and the second air cooling signal is the second low level signal, then generate the third low level signal. The second air cooling signal here is generated by the second controller.

[0075] In some other embodiments, the temperature compensation coefficient is calculated according to the depth of the tunnel and the distance from the i+1th refrigeration device to the tunnel entrance.

[0076]

[0077] Wherein, α represents the temperature compensation coefficient, D represents the depth value of the tunnel, and L represents the distance value from the refrigeration device to the tunnel entrance.

[0078] The calculation formula for calculating the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the i+1th refrigeration device is located is as follows:

[0079] T2 = T1 (1 + α);

[0080] Wherein, T2 represents the temperature design value, and T1 represents the temperature value of the environment where the (i+1)th refrigeration device is located.

[0081] During the construction of a tunnel with geothermal or high ground temperature, the deeper the tunnel goes, the slower the air in the tunnel dissipates heat. Therefore, the deeper the tunnel goes, the higher the air temperature will be. Therefore, the temperature compensation coefficient is set to compensate the temperature value to obtain the temperature design value. In the deep part of the tunnel, a value higher than the preset temperature threshold is used to feedback control the start and stop of air cooling. This improves the air cooling effect deep in the tunnel.

[0082] like Figure 5 As shown, in some embodiments, the air cooler includes a cooling pipe 1, insulation cotton 2, a spiral tube 3, a compressor 4, a liquid pump 5, a condenser 6, an expansion valve 7 and a liquid storage tank 8, one end of the cooling pipe 1 is the air inlet of the refrigeration device, the other end of the cooling pipe 1 is the air outlet of the refrigeration device, the insulation cotton 2 is wrapped around the outside of the cooling pipe 1, the spiral tube 3 is fixedly arranged in the cooling pipe 1, the inlet of the liquid pump 5 is connected to the condenser 6 through a pipeline, the outlet of the liquid pump 5 is connected to the inlet of the compressor 4 through a pipeline, the outlet of the compressor 4 is connected to one end of the spiral tube 3 through a pipeline, the other end of the spiral tube 3 is connected to the inlet of the condenser 6 through a pipeline, the outlet of the condenser 6 is connected to one end of the expansion valve 7 through a pipeline, and the other end of the expansion valve 7 is connected to the liquid storage tank 8 through a pipeline. The alcohol solution in the liquid storage tank 8 is compressed and refrigerated by the compressor 4 to obtain a cooled alcohol solution; the cooled alcohol solution exchanges heat with the air in the cooling pipe 1 through the spiral tube 3 to reduce the temperature of the air passing through the cooling pipe 1, and each refrigeration control switch controls the start and stop of the compressor 4 according to its own working state to start or stop the cooling work of the air passing through the cooling pipe 1.

[0083] The embodiment of the present invention sets up multiple refrigeration devices, allowing the multiple refrigeration devices to cool different areas of the tunnel respectively, so that the entire tunnel can be evenly cooled during the construction process, and there will be no local high temperature or poor local refrigeration effect, which solves the technical problem that the temperature in the tunnel cannot be reduced by only using ventilation pipes to ventilate the tunnel. At the same time, a communication connection is also established between two adjacent refrigeration devices, and the refrigeration signal of the i-th refrigeration device will be transmitted to the i+1-th refrigeration device, so that the i+1-th refrigeration device can judge the refrigeration status according to the ambient temperature of the environment in which it is located and the refrigeration signal of the i-th refrigeration device during the refrigeration process, and can obtain the refrigeration status of the i-th refrigeration device in real time through the refrigeration signal of the i-th refrigeration device. In the case that the i-th refrigeration device cannot work, the i+1-th refrigeration device can be used to compensate for the refrigeration, thereby improving the refrigeration effect of the tunnel.

[0084] In some other embodiments, a tunnel construction air supply system is also provided, including the above-mentioned high geothermal tunnel face construction area ventilation and cooling system. The air at the air outlet of the ventilation pipe used for traditional tunnel construction is cooled by the above-mentioned high geothermal tunnel face construction area ventilation and cooling system to achieve cooling of the air in the tunnel.

[0085] In some other embodiments, a cooling system for ventilation ducts in a tunnel construction area is also provided, which uses the above-mentioned high geothermal tunnel face construction area ventilation and refrigeration system to cool the air supplied to the high geothermal tunnel face construction area, so as to cool the air in the high geothermal tunnel face construction area.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ventilation and cooling system for a high ground temperature tunnel face construction area, characterized in that: It comprises a plurality of refrigeration devices, which are sequentially distributed along the extension direction of the tunnel, the distance between every two adjacent refrigeration devices is equal, and a communication connection is established between every two adjacent refrigeration devices; the air inlet of each refrigeration device is connected to the tunnel ventilation pipe through a pipeline, and the air outlet of each refrigeration device is connected to the atmosphere; the serial number of each refrigeration device is defined sequentially starting from the tunnel entrance; The first refrigeration device is used to generate a first air cooling signal according to the temperature value of the environment in which the first refrigeration device is located, and perform refrigeration processing according to the first air cooling signal; The i+1th refrigeration device is used to obtain the i-th air cooling signal generated by the i-th refrigeration device, and generate the i+1th air cooling signal according to the i-th air cooling signal and the temperature value of its own environment, and perform refrigeration processing according to the i+1th air cooling signal; wherein, i∈[1, n-1], n is the total number of the refrigeration devices.

2. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 1 is characterized in that: Each of the refrigeration devices at least includes a temperature sensor, a controller, a refrigeration control switch and an air cooler; in each of the refrigeration devices, the temperature sensor is connected to the controller, the controller is connected to the refrigeration control switch, the refrigeration control switch is connected to the air cooler, the air inlet of the air cooler is connected to the tunnel ventilation pipe through a pipeline, and the air outlet of the air cooler is connected to the atmosphere.

3. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 2 is characterized in that: The temperature sensor of the first refrigeration device is used to collect the temperature value of the environment where the first refrigeration device is located; The controller of the first refrigeration device is used to obtain the temperature value of the environment where the first refrigeration device is located, and generate the first air cooling signal according to the temperature value of the environment where the first refrigeration device is located, so as to control the working state of the refrigeration control switch of the first refrigeration device according to the first air cooling signal; The refrigeration control switch of the first refrigeration device is used to control the start and stop state of the air cooler of the first refrigeration device according to its own working state; the start and stop state is an on state or a stop state; The air cooler of the first refrigeration device is used to turn on the first refrigeration device for refrigeration when the air cooler is in an on state; and to stop the first refrigeration device for refrigeration when the air cooler is in a stopped state.

4. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 3 is characterized in that: The first air cooling signal is a first high level signal or a first low level signal; The controller of the first refrigeration device is specifically used to compare the temperature value of the environment where the first refrigeration device is located with a preset temperature threshold, and if the temperature value of the environment where the first refrigeration device is located is greater than or equal to the preset temperature threshold, then generate the first high-level signal; if the temperature value of the environment where the first refrigeration device is located is less than the preset temperature threshold, then generate the first low-level signal; The refrigeration control switch of the first refrigeration device is specifically used to obtain and determine the category of the first air refrigeration signal. If the first air refrigeration signal is a first high-level signal, the air cooler of the first refrigeration device is controlled to be in an on state according to its own working state; if the first air refrigeration signal is a first low-level signal, the air cooler of the first refrigeration device is controlled to be in a stopped state according to its own working state.

5. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 2 is characterized in that: Establishing a wired or wireless communication connection between the controller of the i-th refrigeration device and the controller of the (i+1)-th refrigeration device; The temperature sensor of the i+1th refrigeration device is used to collect the temperature value of the environment where the i+1th refrigeration device is located; The controller of the i+1th refrigeration device is used to obtain the temperature value of the environment in which the i+1th refrigeration device is located, obtain the i-th air cooling signal from the controller of the i-th refrigeration device through wired or wireless communication, and generate the i+1th air cooling signal according to the i-th air cooling signal and the temperature value of the environment in which the controller is located, so as to control the working state of the refrigeration control switch of the i+1th refrigeration device according to the i+1th air cooling signal; The refrigeration control switch of the i+1th refrigeration device is used to control the start and stop state of the air cooler of the i+1th refrigeration device according to its own working state; The air cooler of the i+1th refrigeration device is used to turn on the i+1th refrigeration device for refrigeration processing when the air cooler is in the on state; when the air cooler is in the stopped state, stop the i+1th refrigeration device for refrigeration processing.

6. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 5 is characterized in that: The i+1th air cooling signal is the i+1th high level signal or the i+1th low level signal, and the i+1th air cooling signal is the i+1th high level signal or the i+1th low level signal; The controller of the i+1th refrigeration device is specifically used to calculate the temperature compensation coefficient according to the depth value of the tunnel and the distance value from the i+1th refrigeration device to the tunnel entrance; calculate the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the i+1th refrigeration device is located; compare the temperature design value with the preset temperature threshold and judge the category of the i-th air cooling signal, if the temperature design value is greater than or equal to the preset temperature threshold, generate the i+1th high-level signal; if the temperature design value is less than the preset temperature threshold and the i-th air cooling signal is the i-th high-level signal, generate the i+1th low-level signal; if the temperature design value is less than the preset temperature threshold and the i-th air cooling signal is the i-th low-level signal, generate the i+1th low-level signal; The refrigeration control switch of the i+1th refrigeration device is specifically used to obtain and determine the category of the i+1th air refrigeration signal. If the i+1th air refrigeration signal is the i+1th high-level signal, the air cooler of the i+1th refrigeration device is controlled to be in an on state according to its own working state; if the i+1th air refrigeration signal is the i+1th low-level signal, the air cooler of the i+1th refrigeration device is controlled to be in a stopped state according to its own working state.

7. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 6 is characterized in that: The calculation formula for calculating the temperature compensation coefficient according to the depth value of the tunnel and the distance value from the i+1th refrigeration device to the tunnel entrance is as follows: Wherein, α represents the temperature compensation coefficient, D represents the depth value of the tunnel, and L represents the distance value from the refrigeration device to the tunnel entrance.

8. The high ground temperature tunnel face construction area ventilation and refrigeration system according to claim 6 is characterized in that: The calculation formula for calculating the temperature design value according to the temperature compensation coefficient and the temperature value of the environment where the i+1th refrigeration device is located is as follows: T2 = T1 (1 + α); Wherein, T2 represents the temperature design value, and T1 represents the temperature value of the environment where the (i+1)th refrigeration device is located.

9. A tunnel construction air supply system, characterized in that: It comprises the high geothermal tunnel face construction area ventilation and refrigeration system as described in any one of claims 1 to 8.

10. A ventilation and cooling method for a high ground temperature tunnel face construction area, characterized in that: The high geothermal tunnel face construction area ventilation and refrigeration system as described in any one of claims 1 to 8 is used to cool the air supplied to the high geothermal tunnel face construction area, so as to cool the air in the high geothermal tunnel face construction area.

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