A ventilation and cooling system based on high ground temperature tunnel

Abstract

The present invention discloses a ventilation and cooling system based on a high geothermal tunnel, wherein the high geothermal tunnel includes a main tunnel and an inclined shaft connected to the main tunnel, and also includes a circuitous pilot pit connected to the main tunnel. The ventilation and cooling system includes: an air storage device is arranged at the connecting junction of the main tunnel and the inclined shaft, and wind is transported to the air storage device through the inclined shaft, and wind is output through the air storage device and circulated into the main tunnel; a plurality of wind relay devices are arranged at equal intervals along the output direction of the air storage device in the space of the main tunnel, and are used to uniformly transmit wind to each section of the main tunnel; a cooling device is arranged in the air storage device, and is used to reduce the temperature of wind input into the air storage device. The present invention has the technical effect of making each construction working surface of the tunnel evenly ventilated and having good cooling measures, and can be widely used in the field of tunnel construction technology.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and more specifically, to a ventilation and cooling system based on a high ground temperature tunnel. Background Art

[0002] With the vigorous development of railway tunnel industry, tunnel ventilation design has become an important issue in the development of railway tunnels. Railway tunnel ventilation design generally takes two forms: natural ventilation and mechanical ventilation. In the specific design, reasonable ventilation design is required based on the actual situation.

[0003] When crossing high geothermal areas during construction of plateau underground projects under special geographical and geological conditions, it has a great impact on the construction workers. It is very important to comprehensively reduce the temperature under high geothermal conditions, ensure safe and efficient construction, and take measures to reduce the temperature of the high geothermal construction environment. Summary of the invention

[0004] The purpose of the present invention is to provide a ventilation and cooling system based on a high geothermal tunnel, which can ensure uniform ventilation and good cooling measures for each construction working surface of the main tunnel.

[0005] In order to achieve these purposes and other advantages according to the present invention, a ventilation and cooling system based on a high geothermal tunnel is provided, wherein the high geothermal tunnel comprises a main tunnel and an inclined shaft connected to the main tunnel, and further comprises a circuitous pilot pit connected to the main tunnel, wherein the ventilation and cooling system comprises:

[0006] An air storage device is provided at the connecting junction of the main tunnel and the inclined shaft, and wind is transported to the air storage device through the inclined shaft, and wind is output through the air storage device and circulated into the main tunnel;

[0007] A plurality of wind relay devices are arranged at equal intervals along the output direction of the wind storage device in the space of the main tunnel, and are used to evenly transmit wind power to each section of the main tunnel;

[0008] A cooling device is arranged in the air storage device and is used to reduce the temperature of the wind input into the air storage device.

[0009] Preferably, the wind output end of the wind storage device transports the wind to each section of the main tunnel through a plurality of flexible air ducts.

[0010] Preferably, the detour guide pit is provided with a plurality of through connection points along the length direction of the main tunnel, and the soft air duct includes a first air duct, which is arranged along the length of the detour guide pit, and a branch pipe is connected at each connection point between the detour guide pit and the main tunnel, and the outlet of each branch pipe is connected to the main tunnel.

[0011] Preferably, the plurality of wind power relay devices include:

[0012] A plurality of axial flow fans, each of which is correspondingly arranged on each segment of the first air duct corresponding to the branch pipe, are used to evenly transport wind power to each segment of the main tunnel.

[0013] Preferably, the air storage device comprises:

[0014] An air storage chamber, which is a three-dimensional chamber with a sealed structure and is arranged on one side of the main tunnel;

[0015] The interior of the air storage chamber is supported by steel sections, and the exterior of the air storage chamber is welded by sealing steel plates.

[0016] Preferably, the cooling device comprises:

[0017] A water reservoir, which is arranged at the bottom of the air storage chamber;

[0018] A refrigeration device is arranged in the air storage chamber close to the inclined shaft.

[0019] Preferably, some of the wind power relay devices further include:

[0020] A plurality of jet fans are equidistantly arranged at one side of the main tunnel away from the air storage chamber, and the wind direction guided by each jet fan faces the direction of the air storage chamber, so as to discharge the high-temperature airflow in the main tunnel out of the main tunnel.

[0021] Preferably, the water reservoir has a water inlet pipe connected to the outside for water delivery;

[0022] It also includes a water outlet pipe, one end of which is connected to the water reservoir through a water pump, and the other end extends into the main tunnel. The water outlet pipe is arranged along the length direction of the main tunnel, and the water outlet pipe is located on a segment in the main tunnel, and water outlet nozzles are equidistantly arranged to spray clean water into the main tunnel.

[0023] The present invention has at least the following beneficial effects:

[0024] 1. The ventilation effect is good. Several wind relay devices are added between the air storage room and the main tunnel to maintain a uniform ventilation environment on each construction working surface in the high geothermal tunnel.

[0025] 2. The cooling effect is good. By setting a water tank and a cooling device in the air storage room, the output wind temperature in the air storage room is reduced, thereby reducing the high temperature of the working environment in the main tunnel.

[0026] 3. Good air circulation environment, by installing jet fans in each section of the main tunnel, and the guiding direction of the jet fans is facing the direction of the air storage chamber, guiding the circulation of the wind environment in the main tunnel, thereby ensuring a good air environment in the main tunnel.

[0027] 4. The dust reduction effect is good. By setting up a water outlet pipe extending into the main tunnel and setting water outlet nozzles along each section of the water outlet pipe, the sprayed water mist has a good dust reduction effect.

[0028] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the ventilation and cooling system in the present invention;

[0030] Explanation of the markings in the drawings in the specification: 1. Main tunnel, 2. Inclined shaft, 3. Circuitous pilot pit, 4. Air storage chamber, 5. Axial flow fan, 6. Jet fan, 7. Flexible air duct. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0032] In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] like Figure 1 As shown, a ventilation and cooling system based on a high geothermal tunnel of the present invention comprises a main tunnel 1 and an inclined shaft 2 connected to the main tunnel 1, and also comprises a circuitous pilot pit 3 connected to the main tunnel 1. The ventilation and cooling system comprises:

[0034] An air storage device is provided at the connecting junction between the main tunnel 1 and the inclined shaft 2, and wind is transported to the air storage device through the inclined shaft 2, and the wind is output through the air storage device and circulated into the main tunnel 1;

[0035] A plurality of wind relay devices are arranged at equal intervals along the output direction of the wind storage device in the space of the main tunnel 1, and are used to evenly transmit wind power to each section of the main tunnel 1;

[0036] A cooling device is arranged in the air storage device and is used to reduce the temperature of the wind input into the air storage device.

[0037] In the above technical solution, the inclined shaft 2 is used to continuously input wind power into the air storage device, and then the air flow temperature is reduced by the cooling device in the air storage device, and then the cooled air flow is input into the main tunnel 1, so as to reduce the internal temperature environment of the high geothermal tunnel and form flowing air inside the tunnel, thereby achieving a suitable construction environment;

[0038] Among them, a wind relay device is set at each segment position of the main tunnel 1. When the wind output is far away from the wind source, the wind speed will inevitably decrease. By presetting the installation point of the wind relay device, an installation is performed to synchronize the wind output frequency in the tunnel.

[0039] In another technical solution, the wind output end of the wind storage device transmits the wind to each section of the main tunnel 1 through a plurality of flexible air ducts 7 .

[0040] In the above technical solution, the soft air duct 7 has good ductility and can be adapted to the different terrains of various sections in the tunnel.

[0041] In another technical solution, the detour guide pit 3 is provided with a plurality of through connection points along the length direction of the main tunnel 1, and the soft air duct 7 includes a first air duct, which is provided along the length of the detour guide pit 3, and a branch pipe is provided at each connection point between the detour guide pit 3 and the main tunnel 1, and the outlet of each branch pipe is connected to the main tunnel 1.

[0042] In another technical solution, the plurality of wind power relay devices include:

[0043] A plurality of axial flow fans 5 are provided, and each of the axial flow fans 5 is correspondingly arranged on each segment of the first air duct corresponding to the branch pipe, so as to evenly deliver wind power to each segment of the main tunnel 1 .

[0044] In the above technical solution, the length of the detour pilot pit 3 is adapted to the length of the section under construction in the main tunnel 1, the first air duct is arranged along the length direction of the detour pilot pit 3, and is arranged at the connection point connected to the detour pilot pit 3 according to the required air volume of each tunnel face inside the main tunnel 1, each connection point forms a channel running through the detour pilot pit 3 and the main tunnel 1, and each branch pipe is connected to the first air duct and the main tunnel 1 through the corresponding connection point;

[0045] Among them, the passage of each branch pipe corresponding to the connecting point with the detour guide pit 3 has a ventilation gap, and the high-temperature airflow in the main tunnel 1 can flow back through the gap to the direction of the air storage device and then be discharged from the inclined shaft 2.

[0046] In another technical solution, the air storage device includes:

[0047] The air storage chamber 4 is a three-dimensional chamber with a sealed structure and is arranged on one side of the main hole 1;

[0048] The interior of the air storage chamber 4 is supported by steel sections, and the exterior of the air storage chamber 4 is welded by sealing steel plates.

[0049] In another technical solution, the cooling device comprises:

[0050] A water reservoir, which is arranged at the bottom of the air storage chamber 4;

[0051] A refrigeration device is arranged in the air storage chamber 4 near the inclined shaft 2.

[0052] In the above technical solution, the construction of the air storage chamber 4 includes the following steps:

[0053] S1, preset the construction area of ​​the air storage chamber 4 and dig a water reservoir;

[0054] S2, constructing supporting steel sections around the periphery of the water storage tank to form the outer contour of the air storage chamber 4;

[0055] S3, installing a refrigeration device at the air inlet of the air storage chamber 4;

[0056] S4, setting up a fan platform at the air outlet of the air storage chamber 4 and installing the fan;

[0057] S, in step S2, the outer side of the outer contour of the air storage chamber 4 is sealed and welded with steel plates to form a sealed wind storage environment.

[0058] Among them, digging the water reservoir includes laying waterproof geotextile inside the water reservoir to prevent leakage, and installing water inlet pipes, water supply pipes and water pumps connecting to the outside.

[0059] Furthermore, the interior of the air storage chamber 4 is supported by steel sections, the bottom and top are supported by I18 for horizontal support, with a spacing of 2m, for a total of 32 pieces; the front and rear parts are supported by I18 for vertical support, with a spacing of 3m, for a total of 22 pieces; the side parts are supported by I18 for vertical support, with a spacing of 1.5m, for a total of 4 pieces; the interior is supported by I16 for diagonal bracing, with a longitudinal spacing of 3m, for a total of 22 pieces.

[0060] Furthermore, the refrigeration device can select several high-power air conditioners as refrigeration sources.

[0061] In another technical solution, some of the wind power relay devices further include:

[0062] A plurality of jet fans 6 are equidistantly arranged at a side of the main tunnel 1 away from the air storage chamber 4, and the wind direction guided by each jet fan 6 faces the direction of the air storage chamber 4, so as to discharge the high-temperature airflow in the main tunnel 1 out of the main tunnel 1.

[0063] In the above technical solution, the airflow guiding direction of several jet fans 6 is directly opposite to the air storage direction of the air storage chamber 4, which is used to replace the turbid and high-temperature air in the main tunnel 1 to form a good indoor circulating air environment of the main tunnel 1.

[0064] In another technical solution, the water reservoir has a water inlet pipe connected to the outside for water delivery;

[0065] It also includes a water outlet pipe, one end of which is connected to the water reservoir through a water pump, and the other end extends into the main tunnel 1. The water outlet pipe is arranged along the length direction of the main tunnel 1, and the water outlet pipe is located on a segment in the main tunnel 1. Water outlet nozzles are equidistantly arranged to spray clean water into the main tunnel 1.

[0066] In the above technical solution, each section of the water outlet pipe is provided with a water blowing nozzle, which compresses the water flow into a dense water mist, sprays it into the main hole 1, and the dust attached to the air falls to the ground, thereby achieving the purpose of dust reduction.

[0067] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A ventilation and cooling system based on a high geothermal tunnel, the high geothermal tunnel comprising a main tunnel and an inclined shaft connected to the main tunnel, and also comprising a circuitous pilot pit connected to the main tunnel, characterized in that: The ventilation and cooling system comprises: An air storage device is provided at the connecting junction of the main tunnel and the inclined shaft, and wind is transported to the air storage device through the inclined shaft, and wind is output through the air storage device and circulated into the main tunnel; A plurality of wind relay devices are arranged at equal intervals along the output direction of the wind storage device in the space of the main tunnel, and are used to evenly transmit wind power to each section of the main tunnel; A cooling device, which is arranged in the air storage device and is used to reduce the temperature of the wind input into the air storage device; The wind output end of the wind storage device transmits the wind to each section of the main tunnel through a plurality of flexible air ducts; The detour guide pit is provided with a plurality of through connection points along the length direction of the main tunnel. The soft air duct comprises a first air duct, which is provided along the length of the detour guide pit and is connected with a branch pipe at each connection point between the detour guide pit and the main tunnel, and the outlet of each branch pipe is connected to the main tunnel.

2. The ventilation and cooling system based on the high geothermal tunnel according to claim 1 is characterized in that: Some of the wind power relay devices include: A plurality of axial flow fans, each of which is correspondingly arranged on each segment of the first air duct corresponding to the branch pipe, are used to evenly transport wind power to each segment of the main tunnel.

3. The ventilation and cooling system based on the high geothermal tunnel according to claim 1 is characterized in that: The air storage device comprises: An air storage chamber, which is a three-dimensional chamber with a sealed structure and is arranged on one side of the main tunnel; The interior of the air storage chamber is supported by steel sections, and the exterior of the air storage chamber is welded by sealing steel plates.

4. The ventilation and cooling system based on a high geothermal tunnel according to claim 1 or 3, characterized in that: The cooling device comprises: A water storage tank, which is arranged at the bottom of the air storage chamber; A refrigeration device is arranged in the air storage chamber close to the inclined shaft.

5. The ventilation and cooling system based on the high geothermal tunnel according to claim 1 or 3, characterized in that: Some of the wind power relay devices also include: A plurality of jet fans are equidistantly arranged at one side of the main tunnel away from the air storage chamber, and the wind direction guided by each jet fan faces the direction of the air storage chamber, so as to discharge the high-temperature airflow in the main tunnel out of the main tunnel.

6. The ventilation and cooling system based on the high geothermal tunnel according to claim 4 is characterized in that: The water reservoir has a water inlet pipe connected to the outside for water delivery; It also includes a water outlet pipe, one end of which is connected to the water reservoir through a water pump, and the other end extends into the main tunnel. The water outlet pipe is arranged along the length direction of the main tunnel, and the water outlet pipe is located on a segment in the main tunnel, and water outlet nozzles are equidistantly arranged to spray clean water into the main tunnel.

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