阅读说明：本技术 隧道降温系统及降温方法 (Tunnel cooling system and cooling method ) 是由 吴志军 张鹏林 刘泉声 魏明宝 李伟伟 朱江涛 王刚 于 2019-10-30 设计创作，主要内容包括：本发明涉及一种隧道降温系统及降温方法。隧道降温系统包括：输送部件,沿隧道长度方向设置,用于输送冷却介质；增压部件,与所述输送部件连接且设于所述隧道内,用于为冷却介质增压并将冷却介质输出；喷出部件,分布于所述隧道的施工段,所述喷出部件与所述增压部件的出口连接,用于将所述增压部件输出的冷却介质喷出以使所述隧道的施工段温度下降。本发明将冷却介质从外部通过输送部件输送至隧道施工段,集中对隧道施工段降温,改变了传统方法中直接从隧道口通风对隧道施工段实施降温的思路,降低了降温难度。可以直接对隧道的施工段降温,不会受隧道长度影响,即使隧道长度很长也能够保持良好的降温效果,特别适用于高地温围岩长隧道掘进。(The invention relates to a tunnel cooling system and a tunnel cooling method. The tunnel cooling system includes: the conveying component is arranged along the length direction of the tunnel and is used for conveying a cooling medium; the pressurizing component is connected with the conveying component, arranged in the tunnel and used for pressurizing the cooling medium and outputting the cooling medium; and the spraying parts are distributed in the construction section of the tunnel, connected with the outlet of the pressurizing part and used for spraying the cooling medium output by the pressurizing part to lower the temperature of the construction section of the tunnel. The invention conveys the cooling medium to the tunnel construction section from the outside through the conveying component, and intensively cools the tunnel construction section, thereby changing the idea of directly ventilating from the tunnel mouth to cool the tunnel construction section in the traditional method and reducing the cooling difficulty. The tunnel cooling device can directly cool the construction section of the tunnel, cannot be influenced by the length of the tunnel, can keep good cooling effect even if the length of the tunnel is very long, and is particularly suitable for high-ground-temperature surrounding rock long tunnel tunneling.)

1. A tunnel cooling system, comprising:

the conveying component is arranged along the length direction of the tunnel and is used for conveying a cooling medium;

the pressurizing component is connected with the conveying component, arranged in the tunnel and used for pressurizing the cooling medium and outputting the cooling medium;

and the spraying parts are distributed in the construction section of the tunnel, connected with the outlet of the pressurizing part and used for spraying the cooling medium output by the pressurizing part to lower the temperature of the construction section of the tunnel.

2. The tunnel cooling system according to claim 1, wherein the ejection member includes a plurality of atomizing nozzles, the atomizing nozzles are distributed in the tunnel along the extending direction of the tunnel, and a connection line between every two adjacent atomizing nozzles is not parallel to the extending direction of the tunnel portion where the two atomizing nozzles are located.

3. The tunnel cooling system of claim 1, wherein the ejection member is provided on a heading device.

4. The tunnel chilling system of claim 1, further comprising a refrigeration assembly, the refrigeration assembly comprising:

the refrigerating component is arranged in the tunnel and comprises an input end and an output end, and the input end is connected with the conveying component;

the extension direction in tunnel leads to the palm face in tunnel, just air conditioning pipeline with the output intercommunication of refrigeration part is used for with the air conditioning of refrigeration part output carries extremely the palm face.

5. The tunnel cooling system of claim 4, wherein the refrigeration component comprises an air cooler or an air cooler.

6. The tunnel cooling system according to claim 4, further comprising storage containers respectively connected to the input ends of the refrigerating components and the conveying components, for temporarily storing the cooling medium input by the conveying components to the refrigerating components.

7. The tunnel cooling system according to claim 1, wherein the pressure-increasing component is a pressure-regulating water pump, the pressure-regulating water pump includes an input port and an output port, the input port is connected to the delivery component through a guide pipe, and the output port is connected to the ejection component through a pressure pipe.

8. The tunnel chilling system of claim 1, wherein the transport component comprises a transport conduit.

9. The tunnel cooling system of claim 4, further comprising an automatic control device, the automatic control device comprising:

the temperature detection unit is used for detecting temperature data in the tunnel;

and the control unit is respectively in communication connection with the pressurization component, the refrigeration component and the temperature detection unit and is used for receiving temperature data detected by the temperature detection unit and controlling and driving the pressurization component and the refrigeration component.

10. The tunnel cooling system according to claim 9, wherein the control unit is a control cabinet, and a controller is disposed in the control cabinet and electrically connected to the pressure increasing unit, the refrigerating unit and the temperature detecting unit, respectively.

11. The tunnel cooling system of claim 9, wherein the temperature sensing units are temperature sensors spaced apart along the direction of tunnel extension.

12. A tunnel cooling method is characterized by comprising the following steps:

detecting temperature data in the tunnel based on the temperature detection unit;

when the temperature of the tunnel construction section is judged to be higher than the preset temperature, the control unit controls the starting pressurization component to pressurize the cooling medium from the conveying component and then spray the cooling medium out through the spraying component arranged in the tunnel;

if the temperature in the tunnel is not reduced below the preset temperature after the pressurization component operates for the preset time, the control unit starts the refrigeration component, the cold air made by the refrigeration component is conveyed to the tunnel face of the tunnel through the cold air conveying pipeline to cool the space near the tunnel face, and the cold air is blocked and rebounded by the tunnel face after reaching the tunnel face and flows towards the tunnel inlet along the tunnel extension direction, so that the temperature of the tunnel construction section is reduced;

and when the control unit judges that the temperature of the tunnel construction section is reduced below the preset temperature, the control unit controls the refrigeration part to be closed.

13. The method of reducing temperature in a tunnel according to claim 12, wherein the ejection member is provided on the heading equipment.

Technical Field

The invention relates to the field of tunnel construction, in particular to a tunnel cooling system and a cooling method.

Background

In recent years, western construction in China is going on vigorously, and tunnel construction is developing towards deeper and longer trends in western due to complex western terrain in China.

TBM (full face tunnel boring machine) is favored in the construction of tunnel boring because of its superiority in long tunnel boring. The TBM is likely to encounter high-temperature surrounding rocks in the process of tunneling a tunnel with large buried depth, and the high-temperature surrounding rocks can enable workers and equipment in the tunnel to be in a high-temperature working environment, so that the health of the workers and the working efficiency are not facilitated. The ventilation mode that traditional TBM tunnel adopted is that directly transport the fresh air of tunnel portal into the tunnel until near the face that TBM tunneled for tunnel cooling, however when the tunnel was too long, the air can be heated to higher temperature by the high temperature radiation of surrounding rock after long distance transport in high temperature environment, has not reached near the face when the temperature has risen to and has basically unanimously with the original temperature of tunnel, and the cooling effect is very little. Therefore, how to efficiently and economically reduce the high temperature in the deep and long tunnel and improve the working environment in the construction process is a problem to be solved urgently.

Disclosure of Invention

Therefore, it is necessary to provide a tunnel cooling system and a cooling method for solving the problem that the environmental temperature is too high and difficult to adjust during the tunneling process of a long tunnel with high ground temperature.

A tunnel cooling system, comprising:

the conveying component is arranged along the length direction of the tunnel and is used for conveying a cooling medium;

the pressurizing component is connected with the conveying component, arranged in the tunnel and used for pressurizing the cooling medium and outputting the cooling medium;

and the spraying parts are distributed in the construction section of the tunnel, connected with the outlet of the pressurizing part and used for spraying the cooling medium output by the pressurizing part to lower the temperature of the construction section of the tunnel.

Above-mentioned tunnel cooling system has following profitable technological effect at least:

(1) the cooling medium is conveyed to the tunnel construction section from the outside through the conveying component, the temperature of the tunnel construction section is intensively reduced, the idea of cooling the tunnel construction section from the ventilation of a tunnel portal in the traditional method is changed, and the cooling difficulty is effectively reduced. The tunnel cooling device can directly concentrate on cooling the construction section of the tunnel, the cooling operation cannot be influenced by the length of the tunnel, a good cooling effect can be kept even if the length of the tunnel is very long, and the tunnel cooling device is particularly suitable for the tunneling of the long tunnel of the surrounding rock at high ground temperature.

(2) The invention can effectively reduce the environmental temperature of workers and equipment in the tunnel, greatly improves the working environment of deep tunnel tunneling after the temperature is reduced, is beneficial to the health of the workers and the improvement of the working efficiency, and can permanently and normally operate mechanical equipment in the tunnel, thereby prolonging the service life.

(3) The embodiment directly reduces the temperature of the construction section, so that less equipment and parts are required for construction, and the engineering quantity and the investment cost are low; and the tunnel in western regions of China is generally located in a mountainous area, the air temperature is low, surface water is mostly snow mountain melt water, the temperature is low, the tunnel can be directly taken and used at any time without low-temperature treatment, the cost consumption is further reduced, and the water has higher specific heat capacity and evaporation and heat absorption properties compared with air, so that the tunnel construction section high-temperature water-cooling system is a better choice for reducing the high temperature of the tunnel construction section.

(4) This embodiment not only can play the cooling effect when the operation, and the cooling medium of blowout part spun still has obvious dust removal effect.

In one embodiment, the spraying part comprises a plurality of atomizing nozzles, the atomizing nozzles are distributed in the tunnel along the extending direction of the tunnel, and the connecting line of every two adjacent atomizing nozzles is not parallel to the extending direction of the tunnel part where the two atomizing nozzles are located.

In one embodiment, the ejection member is provided on the heading device.

In one embodiment, the refrigerator further comprises a refrigeration assembly, the refrigeration assembly comprising:

the refrigerating component is arranged in the tunnel and comprises an input end and an output end, and the input end is connected with the conveying component;

the extension direction in tunnel leads to the palm face in tunnel, just air conditioning pipeline with the output intercommunication of refrigeration part is used for with the air conditioning of refrigeration part output carries extremely the palm face.

In one embodiment, the refrigeration component comprises an air cooler or an air cooler.

In one embodiment, the refrigeration system further comprises storage containers which are respectively connected with the input ends of the refrigeration components and the conveying components and are used for temporarily storing the cooling medium input by the conveying components to the refrigeration components.

In one embodiment, the pressure-regulating water pump is a pressure-regulating water pump, the pressure-regulating water pump comprises an input port and an output port, the input port is connected with the conveying component through a guide pipe, and the output port is connected with the ejection component through a pressure pipe.

In one embodiment, the transport component comprises a transport conduit.

In one embodiment, the automatic control device further comprises an automatic control device, and the automatic control device comprises:

the temperature detection unit is used for detecting temperature data in the tunnel;

and the control unit is respectively in communication connection with the pressurization component, the refrigeration component and the temperature detection unit and is used for receiving temperature data detected by the temperature detection unit and controlling and driving the pressurization component and the refrigeration component.

In one embodiment, the control unit is a control cabinet, and a controller is arranged in the control cabinet and is electrically connected with the pressurization part, the refrigeration part and the temperature detection unit respectively.

In one embodiment, the temperature detection units are temperature sensors arranged at intervals along the extending direction of the tunnel.

A tunnel cooling method comprises the following steps:

detecting temperature data in the tunnel based on the temperature detection unit;

when the temperature of the tunnel construction section is judged to be higher than the preset temperature, the control unit controls the starting pressurization component to pressurize the cooling medium from the conveying component and then spray the cooling medium out through the spraying component arranged in the tunnel;

if the temperature in the tunnel is not reduced below the preset temperature after the pressurization component operates for the preset time, the control unit starts the refrigeration component, the cold air made by the refrigeration component is conveyed to the tunnel face of the tunnel through the cold air conveying pipeline to cool the space near the tunnel face, and the cold air is blocked and rebounded by the tunnel face after reaching the tunnel face and flows towards the tunnel inlet along the tunnel extension direction, so that the temperature of the tunnel construction section is reduced;

and when the control unit judges that the temperature of the tunnel construction section is reduced below the preset temperature, the control unit controls the refrigeration part to be closed.

The tunnel cooling method at least has the following beneficial technical effects:

the cooling of the tunnel construction section is realized through automatic control, manual operation control is not needed, and the labor cost is saved; the regulation and control process is accurate and timely, the temperature of the tunnel construction section can be constantly guaranteed to be below the preset temperature, the deep tunnel tunneling working environment is improved to a great extent after the temperature is reduced, the personnel health and the working efficiency are favorably improved, mechanical equipment in the tunnel can run normally and durably, and the service life is prolonged.

In one embodiment, the ejection member is provided on the heading device.

Drawings

Fig. 1 is a schematic view of a tunnel cooling system according to an embodiment of the present invention;

fig. 2 is a schematic connection diagram of an automatic control device in a tunnel cooling system according to an embodiment of the present invention.

In the figure: 110. a conveying component 111, a conveying pipeline,

120. a pressurizing part 121, a guide pipe 122, a pressure pipe,

130. a spraying part 131, an atomizing nozzle,

200. a refrigeration component 210, a refrigeration part 211, a connecting air pipe 220, a cold air conveying pipeline 230, a storage container,

300. a temperature detection unit for detecting the temperature of the liquid crystal,

400. the tunnel is a tunnel in which the tunnel is formed,

500. a trolley.

Detailed Description

The invention will be further explained with reference to the drawings.

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Those of ordinary skill in the art will recognize that variations and modifications of the various embodiments described herein can be made without departing from the scope of the invention, which is defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, in an embodiment of the present invention, a tunnel cooling system is provided, which includes:

a conveying unit 110 disposed along a length direction of the tunnel 400 to convey a cooling medium;

a pressurizing member 120 connected to the conveying member 110 and provided in the tunnel 400, for pressurizing the cooling medium and outputting the cooling medium;

and the spraying parts 130 are distributed at the construction section of the tunnel 400, and the spraying parts 130 are connected with the outlet of the pressurizing part 120 and are used for spraying the cooling medium output by the pressurizing part 120 so as to reduce the temperature of the construction section of the tunnel 400.

The cooling medium used in this embodiment can be selected from low temperature (e.g. below 10 ℃) distilled water, absolute ethyl alcohol, etc., and is not limited herein.

After the components are arranged at the corresponding positions according to the embodiment, the pressurizing component 120 is started, the pressurizing component 120 pressurizes the cooling medium conveyed by the conveying component 110 and then sprays the cooling medium out through the spraying component 130 arranged in the tunnel 400, the cooling medium is sprayed out after being pressurized and contacts with high-temperature air at the construction section of the tunnel 400, and the temperature in the tunnel 400 is rapidly reduced through the heat exchange and absorption effect. The spraying amount can be increased by adjusting the power of the pressurizing member 120 in a specific operation until the temperature in the construction section of the tunnel 400 is reduced to a desired level, for example, below 28 ℃.

The cooling medium such as low-temperature cold water is conveyed to the construction section of the tunnel 400 from the outside through the conveying component 110, the temperature of the construction section of the tunnel 400 is reduced in a centralized manner, the idea that the temperature of the construction section of the deep and long tunnel 400 is reduced by directly ventilating from a tunnel portal in the traditional method is changed, and the difficulty of temperature reduction is effectively reduced.

Because the embodiment can directly cool the construction section of the tunnel, the cooling operation is not influenced by the length of the tunnel, and the good cooling effect can be kept even if the length of the tunnel is very long, so that the method is particularly suitable for the tunneling of the long tunnel of the surrounding rock at high ground temperature; after the environmental temperature of workers and equipment in the tunnel is reduced, the deep tunnel tunneling working environment is improved to a great extent, the health of the workers and the working efficiency are improved, the mechanical equipment in the tunnel can run normally for a long time, and the service life is prolonged.

Referring to fig. 1, in some embodiments, the ejection part 130 includes a plurality of atomizing nozzles 131, the atomizing nozzles 131 are distributed in the tunnel 400 along the extending direction of the tunnel 400, and a connection line of every two adjacent atomizing nozzles 131 is not parallel to the extending direction of the portion of the tunnel 400 where two atomizing nozzles 131 are located. Specifically, the non-parallel relation between the connecting line of each two adjacent atomizing nozzles 131 and the extending direction of the tunnel 400 where the two atomizing nozzles 131 are located may be: the adjacent atomizing nozzles 131 may be respectively provided on both sides of the full face tunnel boring machine, or on the same side of the full face tunnel boring machine but at different heights. Because the sprayed droplets are easy to move along with the flowing direction of the air in the tunnel 400, and the flowing direction of the air in the tunnel 400 is consistent with the extending direction of the tunnel 400, if the connecting line of each atomizing nozzle 131 is completely parallel to the extending direction of the tunnel 400, the sprayed droplets move to the next atomizing nozzle 131 along the flowing direction of the air before being heated and evaporated and possibly mixed with the droplets sprayed by the next atomizing nozzle 131, on one hand, the particle size of the mixed droplets is increased, the difficulty of heat absorption evaporation and phase change is increased, and the effect of temperature reduction is difficult to achieve; on the other hand, the mixed fog drops can not be evaporated in time, which affects the visual field in the tunnel 400 and is not beneficial to the normal operation of the construction operation. After the arrangement mode of this embodiment is adopted, adjacent atomizing nozzle 131 staggers the setting in the extending direction of following tunnel 400, and during the flow direction of air forward motion was followed to spun droplet, can not mix with next atomizing nozzle 131 spun droplet to can normally absorb heat and flash evaporation become the gaseous phase, guarantee good heat absorption and cooling effect, also can not influence the field of vision in the tunnel 400 simultaneously. Preferably, the interval between adjacent atomizing nozzles 131 is 5-8m, and after the interval is set, a good cooling effect can be achieved, and the construction input cost can be prevented from being increased due to too high arrangement density.

In other embodiments, the ejection member 130 may be a showerhead or a spray head, and is not limited herein.

In some embodiments, the ejection member 130 is provided on the heading device. Specifically, the ejection member 130 may be provided on the body of the full face tunnel boring machine, and the ejection direction of the ejection member 130 is directed toward the inner wall of the tunnel 400 to cool the surrounding rock of the tunnel 400. In this embodiment, the spraying component 130 is arranged on the tunneling device, and the cooling system can move in real time along with the tunneling device towards the tunneling direction, so as to cool the construction section of the tunnel 400 where the tunneling device is located in real time, thereby avoiding the problem that the mounting position of the spraying component 130 is synchronously adjusted along with the continuous penetration of the tunneling device and the continuous forward movement of the construction section, and only ensuring that the conveying component 110 has enough length as the conveying pipeline 111, thereby greatly reducing the workload of construction operation, and also ensuring the effect of real-time cooling.

Of course, in other embodiments, the spouting member 130 can be installed on the inner wall of the construction section of the tunnel 400 or directly placed in the tunnel 400 without affecting the normal implementation of the present invention, and is not limited thereto.

Referring to fig. 1, in some embodiments, a refrigeration assembly 200 is also included, the refrigeration assembly 200 including:

the refrigerating part 210 is arranged in the tunnel 400 and comprises an input end and an output end, wherein the input end is connected with the conveying part 110 and is used for obtaining the cooling medium from the conveying part 110;

the cold air conveying pipeline 220 is communicated to the tunnel face of the tunnel 400 along the extending direction of the tunnel 400, and the cold air conveying pipeline 220 is communicated with the output end of the refrigeration component 210 through a connecting air pipe 211 and is used for conveying the cold air output by the refrigeration component 210 to the tunnel face.

The cold air produced by the refrigeration component 210 is directly discharged into the cold air conveying pipeline 220, and is conveyed to the tunnel face of the tunnel 400 through the cold air conveying pipeline 220 to cool the space near the tunnel face; meanwhile, the cold air can be blocked and rebounded by the tunnel face after reaching the tunnel face and flows reversely to the entrance of the tunnel 400 along the extending direction of the tunnel 400, and the temperature of the construction section of the tunnel 400 is reduced along with the flow of the cold air.

In this embodiment, the cold air in the cold air delivery pipeline 220 is delivered to the foremost end of the heading directionThe face directly is the face cooling of waiting to dig, compares in the cooling method of directly carrying the fresh air of tunnel 400 mouth to the face along the tunnel 400 extending direction, and the cold air that this embodiment refrigeration assembly 200 produced directly reaches near the face, can hardly receive the high temperature country rock radiation influence along the line of tunnel 400, and cold air can directly be to the face cooling, can be in the very first time with the most urgent need the temperature of waiting to dig the terminal surface rock of cooling reduce to lower level, and the cooling effect is better more obvious. The flow of the cold air output by the refrigerating part 210 can be freely adjusted according to the cooling requirement, thereby achieving the best cooling effect. Preferably, the refrigeration part 210 comprises an air cooler or an air cooler, the air temperature is 22 ℃ after cooling, and the air output is 15m³And s. The refrigeration assembly 200 of the embodiment directly adopts the cooling medium in the conveying component 110 as the cooling medium, shares the cooling medium with the pressurizing component 120, does not need to separately provide a cooling medium supply system, provides a second option for cooling the tunnel 400, and can be matched with the pressurizing component 120 to enhance the cooling effect when the pressurizing component 120 reaches full load and still cannot reduce the temperature to an expected value; the device can also be used as a standby scheme, and the device is started to cool when the pressurizing component 120 fails, so that the reliability and stability of the operation of the device are improved.

In some embodiments, the storage container 230 is further included, and is disposed between the input end of the refrigeration unit 210 and the transportation unit 110 and respectively connected to the input end of the refrigeration unit 210 and the transportation unit 110, and is used for temporarily storing the cooling medium input by the transportation unit 110 and injecting the cooling medium into the refrigeration unit 210, so as to ensure that the cooling medium of the refrigeration unit 210 is sufficient. Preferably, the storage container 230 is a cooling water tank, which ensures that the temperature of the stored water therein meets the refrigeration requirement of the refrigeration component 210.

With continued reference to fig. 1, in some embodiments, the conveying member 110, the pressurizing member 120, and the ejection member 130 are provided on a carriage 500, and the carriage 500 is provided in the tunnel 400 and is reciprocally movable in the extending direction of the tunnel 400. Along with the propulsion of the construction section, the conveying component 110, the pressurizing component 120 and the spraying component 130 can be translated along the propulsion direction of the construction section by utilizing the trolley 500, so that the trouble of manually moving the conveying component 110, the pressurizing component 120 and the spraying component 130 along with the movement of the construction section is avoided, and the construction operation is facilitated.

In some embodiments, the pressurizing component 120 is a pressure regulating pump that includes an input port connected to the delivery component 110 through a guide tube 121 and an output port connected to the ejection component 130 through a pressure tube 122. The pressure of the pressure regulating pump can be freely regulated, and when the pressure is regulated to different pressures, the cooling medium can be pressurized to different pressure levels, so that the speed and the flow rate of the cooling medium sprayed from the spraying part 130 are changed, and the temperature reduction speed is further changed.

In some embodiments, the conveying component 110 includes a conveying pipe 111, and the cooling medium is directly and rapidly conveyed by the conveying pipe 111. Further, the conveying pipe 111 is externally coated with an insulating material such as asbestos or the like, so that the temperature rise of the cooling medium conveyed therein can be prevented to the maximum extent.

In other embodiments, the transportation component 110 may be a transportation water tank or a storage container 230 arranged at intervals and connected in sequence, which is not limited herein.

Referring to fig. 1 and 2, in some embodiments, an automatic control device is further included, the automatic control device including:

a temperature detection unit 300 for detecting temperature data in the tunnel 400;

and the control unit 600 is in communication connection with the pressure increasing component 120, the refrigerating component 210 and the temperature detection unit 300 respectively, and is used for receiving temperature data detected by the temperature detection unit 300 and controlling and driving the pressure increasing component 120 and the refrigerating component 210.

The temperature detection unit 300 detects temperature data in the tunnel 400 and transmits the temperature data to the control unit 600, when the control unit 600 judges that the temperature of the construction section of the tunnel 400 is higher than a preset temperature, such as 28 ℃, the control unit controls to start the pressurizing component 120, the pressurizing component 120 pressurizes the cooling medium conveyed by the conveying component 110 and then sprays the cooling medium out through the spraying component 130 arranged in the tunnel 400, the cooling medium is pressurized and then sprays out and contacts with high-temperature air of the construction section of the tunnel 400, and the temperature in the tunnel 400 is rapidly reduced through heat exchange and heat absorption; when the temperature of the pressurizing part 120 is not reduced below the preset temperature after the operation for the preset time, which indicates that the cooling system has a partial fault or reaches full load, the control unit 600 starts the cooling part 210, the cold air produced by the cooling part 210 is directly discharged into the cold air conveying pipeline 220, and is conveyed to the tunnel face of the tunnel 400 through the cold air conveying pipeline 220 to cool the space near the tunnel face, and the cold air can be blocked and rebounded by the tunnel face after reaching the tunnel face, and reversely flows to the entrance of the tunnel 400 along the extending direction of the tunnel 400, so as to reduce the temperature of the construction section of the tunnel 400 along with the flow of the cold air, and when the temperature is reduced below the preset temperature, the control unit 600 controls to close the cooling part 210.

In operation, the control unit 600 may adjust the power of the pressurizing member 120 according to the temperature level to change the spraying amount, so as to reduce the temperature in the construction section of the tunnel 400 to a desired level, for example, below 28 ℃.

Preferably, the ejection member 130 is provided in the heading device. In this embodiment, the ejection component 130 is arranged on the tunneling device, and the cooling system can move in real time along with the tunneling device to the tunneling direction, so as to cool the construction section of the tunnel 400 where the tunneling device is located in real time, thereby avoiding the problems of continuous penetration along with tunneling and continuous forward movement of the construction section to synchronously follow and adjust the installation position of the ejection component 130 in the tunneling process, and only ensuring that the conveying component 110 has enough length as the conveying pipeline 111, thereby greatly reducing the workload of construction operation, and also ensuring the real-time cooling effect, and completely avoiding the need of constructors to enter the tunnel 400 in the tunneling process, and the method is particularly suitable for tunneling a long tunnel surrounded by high ground temperature rock.

Preferably, the control unit 600 is a control cabinet, and a controller is disposed in the control cabinet, and the controller is electrically connected to the pressure increasing part 120, the cooling part 210 and the temperature detecting unit 300, respectively.

Preferably, the temperature sensing units 300 are temperature sensors arranged at intervals along the extending direction of the tunnel 400. The temperature sensors arranged at intervals can respectively detect temperature data, and the average value of the temperature data is calculated by the control unit 600 after the temperature data is transmitted to the control unit 600, so that the temperature in the tunnel can be obtained. More preferably, the temperature sensors are arranged every 10-12m along the extension of the tunnel 400.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.