Tunnel type limited space dual-channel disaster recovery computing center

Abstract

The application discloses a kind of tunnel formula confined space dual-channel disaster recovery computing power center, including tunnel formula underground chamber, tunnel formula underground chamber is equipped with: disaster recovery computing power center box, inside is arranged with the single-row cabinet of disaster recovery computing power center box side wall form cold channel, hot channel;Air handling module, including refrigeration adjustment component, air intake branch and return air branch, air intake branch is connected with cold channel, return air branch is connected with hot channel, refrigeration adjustment component is supplemented with refrigeration;Detection control module is used to detect air environment state, and air handling module is regulated and controlled;Disaster recovery communication power supply module provides network and power access conditions and network power supply.This application can solve the problems of large floor area, high energy consumption, poor safety and other problems of traditional ground computing power center, can adapt to various tunnel formula narrow confined space, with scientific air flow organization and disaster recovery safety switching capability, overall realization underground space resource utilization, computing power disaster recovery deployment, energy-saving cooling and safe and stable operation.

Description

Technical Field

[0001] This invention belongs to the technical field of computing center infrastructure construction, specifically relating to a tunnel-type confined space dual-channel disaster recovery computing center. Background Technology

[0002] With the development of artificial intelligence, big data, cloud computing, industrial internet, and digital government, computing centers have become crucial infrastructure supporting data processing, model training, online inference, data storage, and network exchange. Computing centers house servers, storage devices, network equipment, power supply equipment, and environmental control equipment. The continuous operation of servers, storage devices, and network equipment generates significant heat, requiring methods such as air conditioning, ventilation, or liquid cooling to maintain a suitable operating environment.

[0003] Traditional computing centers are typically built in ground-level buildings or dedicated parks. While this approach facilitates construction and operation, it presents challenges in urban core areas or regions with limited land resources, including large land areas, long construction periods, and high land and infrastructure costs. Furthermore, traditional ground-based computing centers often rely on mechanical cooling systems for continuous heat dissipation, resulting in high energy consumption. Improper airflow organization can also lead to problems such as hot and cold air mixing, localized hotspots, wasted air supply, and redundant operation of cooling equipment.

[0004] In critical industries such as finance, telecommunications, and government, computing centers not only undertake general computing and storage tasks but also frequently serve as part of production systems, local disaster recovery systems, or off-site disaster recovery systems. Disaster recovery computing centers need to provide data backup, business takeover, query services, or emergency computing support in the event of fires, power outages, equipment failures, partial network interruptions, regional disasters, or other emergencies at the production center. Therefore, in addition to meeting the general cooling and power distribution requirements of computing equipment, disaster recovery computing centers also need to focus on site security, environmental isolation, communication link redundancy, fire suppression systems, water immersion protection, handling of abnormal air quality, and long-term continuous operation capabilities.

[0005] Underground spaces possess significant protective, concealment, and space reuse value, making them excellent carriers for deploying disaster recovery computing centers. Among them, tunnel-type structures such as highway tunnels, rail transit tunnels, excavated air-raid shelters, and mountain engineering tunnels are widely distributed in urban areas, along major transportation routes, and in mountainous regions. These narrow tunnels naturally form through-flow channels, generating stable cross ventilation and possessing the advantages of continuous and low-cost natural air cooling. They can serve as excellent natural cold sources for cooling computing center equipment and are mostly equipped with native ventilation channels, drainage structures, and maintenance access. The thermal environment is stable, and the protective performance is excellent, providing a good foundation for the transformation and deployment of disaster recovery computing centers. However, the following problems exist when arranging computing centers in narrow, confined tunnel-like spaces: First, traditional multi-row server racks and raised floor ventilation methods have high requirements for floor width and height, making it difficult to adapt to the dimensions of narrow, confined tunnel spaces, and conventional computing equipment layout schemes are difficult to implement; Second, tunnel ventilation conditions are complex, and external air is easily affected by smoke, dust, humidity, harmful gases, or fires, and direct air intake for cooling can easily damage computing equipment; Third, in the event of flooding, smoke backflow, or localized fire in the underground space, the disaster recovery computing center needs to be quickly isolated from the abnormal external environment and maintain necessary short-term or continuous safe operation; Fourth, existing underground data center or edge data center solutions mostly focus on the utilization of natural cold sources or utility corridor space, and do not adequately consider the coordination between dual-link access, environmental security switching, single-row layout in confined underground spaces, and hot and cold aisle isolation required by the disaster recovery computing center. Summary of the Invention

[0006] The purpose of this invention is to provide a tunnel-type confined space dual-channel disaster recovery computing center, which can solve the problems of large footprint, high energy consumption, and poor security resilience of traditional ground computing centers. It can adapt to various tunnel-type narrow and confined spaces, has scientific airflow organization and disaster recovery and safe switching capabilities, and can comprehensively realize the utilization of underground space resources, computing power disaster recovery deployment, energy-saving cooling and safe and stable operation.

[0007] To achieve the above objectives, the present invention provides a tunnel-type confined space dual-channel disaster recovery computing center, comprising a tunnel-type underground chamber connected to the original ventilation channel of the tunnel, wherein the tunnel-type underground chamber is equipped with: The disaster recovery computing center enclosure is equipped with a single row of server racks. The front and rear doors of the single row of server racks form cold aisles and hot aisles with the side walls of the disaster recovery computing center enclosure, respectively. The air handling module includes a refrigeration regulating component, an air intake branch, and a return air branch. One end of the air intake branch is connected to the original ventilation channel of the tunnel and is equipped with an air intake valve. The other end is connected to the cold aisle through a filter, a surface cooler, a blower, and an air supply branch connected in sequence. The refrigeration regulating component is connected to the surface cooler. One end of the return air branch is connected to the hot aisle. The other end is connected to a three-way internal circulation valve and an exhaust branch connected in sequence. The other port of the three-way internal circulation valve is connected to the filter. The detection and control module is used to detect the air quality in the original ventilation duct of the tunnel and the environmental status inside the disaster recovery computing center box, and adjust the air handling module and the disaster recovery communication power supply module according to the detection results. The disaster recovery communication power supply module provides network and power access conditions, supplying power to all equipment inside the tunnel-type underground chamber.

[0008] As a further aspect of the present invention: the tunnel-type underground chamber is one of the tunnel-type confined spaces formed by highway tunnels, rail transit tunnels, mountain air-raid shelters, engineering tunnels or mine roadways. The entrance of the tunnel-type underground chamber is equipped with a fireproof and waterproof door. The tunnel-type underground chamber is equipped with an equipment lifting base to support and place all equipment. A drainage ditch and a water collection alarm unit are provided near the equipment lifting base.

[0009] As a further aspect of the present invention: the detection and control module includes a controller and connected temperature sensor, humidity sensor, air quality sensor, smoke sensor, water immersion sensor, and fire alarm linkage interface; Temperature sensors are installed at least once in one of the following locations: the original ventilation duct of the tunnel, the cold aisle, the hot aisle, or the air inlet side of a single-row cabinet. Air quality sensors are installed in the original ventilation channels or air intake branches of the tunnel; The flue gas sensor should be installed at least in one of the following locations: the original ventilation duct of the tunnel, the air intake branch, or the disaster recovery computing center box; The water immersion sensor should be installed at least at one of the following locations: the bottom of the tunnel-type underground chamber, near the raised base of the equipment, or at the bottom of the disaster recovery computing center box. The fire alarm linkage interface is used to receive linkage signals from external fire alarm systems and is responsible for transmitting abnormal signals from the disaster recovery computing center. The controller connects to control the air intake valve, air supply fan, refrigeration regulating components, three-way internal circulation valve, and disaster recovery communication power supply module.

[0010] As a further aspect of the present invention: the air handling module includes: In the natural cold source pre-cooling mode, air flows sequentially through the intake branch, filter, surface cooler, blower, supply branch, cold aisle, single row cabinet, hot aisle, return air branch, three-way internal circulation valve, and exhaust branch. Mechanical cooling mode, based on the natural cold source pre-cooling mode, activates the refrigeration regulating component to supplement the air with cooling or dehumidification through the surface cooler; In the internal circulation cooling mode, the cooling regulating components are kept on and the air intake valve is closed. Air flows sequentially through the filter, surface cooler, blower, air supply branch, cold aisle, single row cabinet, hot aisle, return air branch, three-way internal circulation valve, and filter to form an internal air circulation within the disaster recovery computing center cabinet.

[0011] As a further aspect of the present invention: an air outlet connected to the air supply branch is provided in the cold aisle, the air outlet is arranged facing the length direction of the cold aisle, and the air outlet is connected and controlled by a detection and control module.

[0012] As a further aspect of the present invention: a return air inlet connected to the return air branch is provided in the hot aisle, and a return air valve controlled by a detection and control module is provided between the return air inlet and the return air branch.

[0013] As a further aspect of the present invention: a partition is provided between the cold passage and the hot passage to maintain a stable dual-channel isolated airflow organization along the tunnel direction.

[0014] As a further aspect of the present invention: the disaster recovery communication power supply module includes a first communication link interface, a second communication link interface, a dual-channel power input unit, an uninterruptible power supply unit, and a power distribution monitoring unit; The first communication link interface and the second communication link interface are respectively used to communicate with at least two nodes in the production center, the same-city disaster recovery center, or the off-site disaster recovery center. The dual power input unit is used to connect to two power sources and power all equipment in the tunnel-type underground chamber; The uninterruptible power supply unit is used to supply power to critical equipment inside the tunnel-type underground chamber when the dual power input unit fails. The power distribution monitoring unit is used to monitor the voltage, current, power, switch status, and alarm status of all equipment in the tunnel-type underground chamber.

[0015] To achieve the above-mentioned objectives, the present invention also provides an operation control method for a tunnel-type confined space dual-channel disaster recovery computing center, comprising the following steps: S1 detects the temperature, humidity, and air quality of the air in the original ventilation duct of the tunnel, and detects the operating environment parameters of the cold aisle, hot aisle, and single-row cabinet in the disaster recovery computing center box. S2, when the ventilation air in the original ventilation channel of the tunnel meets the preset air intake conditions, the air intake valve is opened so that the external underground ventilation air enters the cold channel after being filtered by the air handling module. S3, when the temperature and humidity of the ventilation air in the original ventilation channel of the tunnel or the heat load inside the disaster recovery computing center box exceeds the preset range, the cooling regulation component is activated to perform mechanical cooling or dehumidification, and the airflow organization of the intake branch and exhaust branch is maintained. S4: When smoke, water immersion, abnormal air quality, or fire alarm signal is detected, the air intake valve is closed and the system switches to safe operation mode. After the safe operation mode is deactivated, S5 will resume the natural cold source pre-cooling mode, mechanical supplementary cooling mode, or internal circulation cooling mode based on the temperature, humidity, and air quality detection results, making full use of the tunnel through-draft natural cold source to achieve heat dissipation operation of the disaster recovery computing center.

[0016] As a further aspect of the present invention, the safe operation mode includes one or more of the following: closing the air intake valve, internal circulation cooling mode, outputting an alarm signal, linking with the external fire protection system, sending a load protection command to the disaster recovery communication power supply module, and recording abnormal events.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention places the disaster recovery computing center within a tunnel-like underground chamber and connects it to the tunnel's original ventilation channels. This allows for the utilization of existing underground space resources to construct disaster recovery computing infrastructure, reducing additional surface land occupation. It is suitable for deployment in confined spaces such as highway tunnels, rail transit tunnels, mountain air-raid shelters, and engineering tunnels. Employing a dual-channel airflow organization combining single-row server racks with cold and hot aisles, cold air is directed from the air outlets to the front door of the racks, while hot air enters the hot aisle through the rear door and is centrally recovered. This reduces short-circuiting and mixing of hot and cold air, improves air supply utilization, and alleviates the problems of localized hotspots and uneven airflow in narrow underground spaces. Simultaneously, an air handling module filters, pre-cools, supplements, and recirculates the tunnel ventilation air. It can select between natural cold source pre-cooling, mechanical supplementation, or internal circulation cooling modes based on the temperature, humidity, and air quality of the tunnel ventilation air, reducing reliance on a single mechanical cooling method and improving the cooling system's adaptability to changes in the underground environment. Furthermore, this invention incorporates a detection and control module and a disaster recovery communication and power supply module to comprehensively detect temperature, humidity, air quality, smoke, water immersion, and fire alarm signals. In abnormal situations, it shuts down the ventilation branch and switches to a safe operating mode, reducing the impact of smoke, dust, humid air, water immersion, and external fire alarms on the disaster recovery computing equipment. Through dual communication link interfaces, dual power inputs, uninterruptible power supplies, and power distribution monitoring, it improves the access reliability and operational continuity of the disaster recovery computing center when used as a local or remote disaster recovery node, making it more suitable for tasks such as data backup, business takeover, emergency query, edge disaster recovery, or backup computing power for critical businesses.

[0018] The disaster recovery computing center deployment method provided by this invention has strong adaptability. It can flexibly adjust the planning design and equipment configuration according to the spatial size and computing power requirements of different underground tunnels. It is particularly suitable for tunnel-type confined spaces such as highway tunnels, rail transit tunnels, mountain air-raid shelter tunnels, engineering tunnels and abandoned mine tunnels. It makes full use of the natural cooling source advantage of tunnel ventilation, reduces the energy consumption of infrastructure operation, and improves the continuous and stable operation capability of the disaster recovery computing center. It provides an innovative and feasible solution for the construction of disaster recovery computing infrastructure and has good application prospects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a tunnel-type confined space dual-channel disaster recovery computing center according to the present invention.

[0020] Figure 2 This is a side view of a single row of cabinets, cold aisles, and hot aisles inside the disaster recovery computing center box in this invention.

[0021] Figure 3 This is a top view of the single row of cabinets, cold aisles, and hot aisles inside the disaster recovery computing center box in this invention.

[0022] Figure 4 This is a schematic diagram of the air treatment module in this invention.

[0023] Figure 5 This is a schematic diagram illustrating the control relationship between the detection and control module, the air handling module, and the disaster recovery communication power supply module in this invention.

[0024] Figure 6 This is a schematic diagram illustrating the process of switching between natural cold source pre-cooling mode, mechanical supplemental cooling mode and internal circulation refrigeration mode in this invention.

[0025] Figure 7 This is a high-precision point cloud model of the alleyway and the computing center computer room in this embodiment of the invention.

[0026] Figure 8 This is the simulation result of the maximum inflow temperature of the cabinet in the raised floor air supply (left) and dual-channel airflow organization structure (right) embodiments of the present invention.

[0027] Figure 9 A schematic diagram of airflow distribution in a dual-channel airflow organization structure cabinet in this embodiment of the invention.

[0028] Figure 10 This invention relates to the temperature distribution of the inflow temperature in the height direction of cabinets at different locations in the raised floor air supply system under different air volumes.

[0029] Figure 11 This is an airflow trace diagram of the raised floor air supply terminal cabinet in an embodiment of the present invention.

[0030] Figure 12 This invention relates to the temperature distribution of the inflow temperature in the height direction of the cabinet at different locations in the dual-channel airflow organization structure under different air volumes.

[0031] In the diagram: 1. Tunnel-type underground chamber; 2. Air handling module; 3. Disaster recovery computing center box; 4. Detection and control module; 5. Disaster recovery communication and power supply module; 6. Original ventilation channel of the tunnel. 101. Fireproof and waterproof door; 102. Equipment raising base; 103. Drainage ditch; 104. Water collection alarm unit. 201. Air intake branch, 202. Air supply branch, 203. Air return branch, 204. Refrigeration control unit, 205. Air intake valve, 206. Air return valve, 207. Filter, 208. Surface cooler, 209. Air supply fan, 210. Three-way internal circulation valve, 211. Exhaust branch; 301. Single-row cabinet; 302. Cold aisle; 303. Hot aisle; 304. Air supply outlet; 305. Return air outlet; 306. Partition; 307. Cable tray. 401. Temperature sensor; 402. Humidity sensor; 403. Air quality sensor; 404. Smoke sensor; 405. Water immersion sensor; 406. Fire alarm linkage interface; 407. Controller. 501. First communication link interface; 502. Second communication link interface; 503. Dual power input unit; 504. Uninterruptible power supply unit; 505. Power distribution monitoring unit. Detailed Implementation

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] like Figures 1 to 3 As shown, a tunnel-type confined space dual-channel disaster recovery computing center includes a tunnel-type underground chamber 1 connected to the tunnel's original ventilation channel 6. The tunnel-type underground chamber 1 is equipped with: The disaster recovery computing center enclosure 3 has a single row of cabinets 301 arranged along the length of the enclosure 3. The front and rear doors of the cabinets 301 form a cold aisle 302 and a hot aisle 303 with the side walls of the enclosure 3, respectively. The cold aisle 302 and the hot aisle 303 form a dual-channel airflow organization adapted to the narrow tunnel space of this invention, and are compatible with the natural ventilation characteristics of the tunnel through-draft. The top or side of the disaster recovery computing center enclosure 3 is equipped with a cable tray 307 for arranging power cables, network cables, monitoring cables or fiber optic lines. To reduce the short-circuit mixing of cold and hot air around the cabinet, a partition 306 is provided between the cold aisle 302 and the hot aisle 303 to maintain a stable dual-channel isolated airflow organization along the tunnel direction. This partition is preferably a sealing partition, a blocking plate, or a flow guide.

[0034] Air handling module 2, such as Figures 2 to 4As shown, the system includes a refrigeration regulating assembly 204, an air intake branch 201, and a return air branch 203. The air intake branch 201 is located at the entrance of the tunnel-type underground chamber 1 or near the tunnel's air intake area to draw in cross-ventilation air from the tunnel's original ventilation duct 6. One end of the air intake branch 201 is connected to the tunnel's original ventilation duct 6 and is equipped with an air intake valve 205, which is used to regulate or close the air from the tunnel's original ventilation duct 6. The other end of the air intake branch 201 is connected to the cold aisle 302 via a filter 207, a surface cooler 208, a blower 209, and an air supply branch 202 connected in sequence. The refrigeration regulating assembly... Component 204 connects to the surface cooler 208. One end of the return air branch 203 is connected to the hot passage 303, and the other end is connected in sequence to the three-way internal circulation valve 210 and the exhaust branch 211. The other port of the three-way internal circulation valve 210 is connected to the filter 207. If necessary, the three-way internal circulation valve 210 can be adjusted to form an internal air circulation path. The exhaust branch 211 is connected to the exhaust structure at the top of the tunnel and is used to exhaust the hot air collected in the hot passage 303 from the top of the tunnel. When the intake branch 201 is open and the external air meets the intake conditions, the intake branch 201 and the exhaust branch 211 together form a heat dissipation path of inlet air intake and top air exhaust. The filter 207 includes a particulate matter filtration unit and a gaseous pollutant adsorption unit, used to filter and purify the air drawn in by the air intake branch 201; the surface cooler 208 is used to exchange and regulate the heat of the air treated by the filter 207; the blower 209 is used to send the heat-treated air into the cold aisle 302 through the air supply branch 202; the refrigeration regulation component 204 can be a compression refrigeration unit, a chilled water heat exchange unit, a heat pump heat exchange unit, an indirect evaporative cooling unit, or a combination thereof; depending on the project requirements, the air handling module 2 can also be equipped with a humidification unit, a dehumidification unit, a bypass ventilation valve, a silencer unit, and an inspection door; when the tunnel ventilation temperature and air quality meet the preset conditions, the refrigeration regulation component 204 can reduce the output power or stop mechanical refrigeration to prioritize the use of the tunnel's natural cold source for heat dissipation; During operation, the cold air processed by the air handling module 2 enters the air outlet 304 through the air supply branch 202, and is then directed into the cold aisle 302 from the air outlet 304. The cold air enters the cabinet through the front door of the single-row cabinet 301 to cool the servers, storage devices, and network equipment. The hot air after heat exchange is discharged into the hot aisle 303 through the rear door of the single-row cabinet 301. The hot air enters the return air branch 203 through the return air outlet 305 and returns to the air handling module 2 for further processing or is discharged through the exhaust branch 211. Through the above airflow organization, the cold aisle 302 mainly undertakes the function of cold air supply, and the hot aisle 303 mainly undertakes the function of hot air recovery, which is suitable for forming a stable front-to-back airflow path in a narrow and confined space.

[0035] The detection and control module 4 is used to detect the air conditions inside the original ventilation channel 6 of the tunnel and the environmental conditions inside the disaster recovery computing center box 3, and adjust the air handling module 2 and the disaster recovery communication power supply module 5 according to the detection results. The disaster recovery communication power supply module 5 provides network and power access conditions, supplying power to all equipment in the tunnel-type underground chamber 1.

[0036] Furthermore, the tunnel-type underground chamber 1 is one of the confined spaces formed by highway tunnels, rail transit tunnels, mountain air-raid shelters, engineering tunnels, or mine roadways; the disaster recovery computing center box 3 and the air handling module 2 are arranged compactly according to the cross-sectional dimensions and longitudinal extension direction of the tunnel-type underground chamber 1; when the tunnel-type underground chamber 1 is a narrow and elongated space with limited width, the disaster recovery computing center box 3 is arranged along the length of the tunnel-type underground chamber 1 to reduce the occupation of space width and to make the airflow organization direction of the computing center compatible with the longitudinal through-draft direction of the tunnel; such as Figure 1 and Figure 2 As shown, a fireproof and waterproof door 101 is provided at the entrance of the tunnel-type underground chamber 1 to isolate the tunnel in case of abnormal situations such as smoke, fire, or water immersion in the original ventilation channel 6 or adjacent external space. Inside the tunnel-type underground chamber 1, there is an equipment lifting base 102 to support and place all equipment. Near the equipment lifting base 102, there is a drainage ditch 103 and a water collection alarm unit 104 to drain the water accumulated in the tunnel-type underground chamber 1 and detect the water immersion status.

[0037] To maintain the stable and efficient operation of the disaster recovery computing center, the preferred method is, for example... Figure 1 As shown, the detection and control module 4 includes a controller 407 and its connected temperature sensor 401, humidity sensor 402, air quality sensor 403, smoke sensor 404, water immersion sensor 405, and fire alarm linkage interface 406. Temperature sensor 401 is installed at least once in one of the following locations: the original ventilation duct 6, the cold aisle 302, the hot aisle 303, and the air inlet side of the single-row cabinet 301. Air quality sensor 403 is installed in the original ventilation channel 6 of the tunnel or the air intake branch 201 to detect particulate matter concentration, carbon monoxide concentration, volatile organic compound concentration or other air quality parameters in the original ventilation channel 6 of the tunnel or the air intake side of the air handling module 2, and controls the opening or closing state of the air intake valve 205 according to the detection results. The smoke sensor 404 shall be installed at least in one of the following locations: the original ventilation channel 6 of the tunnel, the air intake branch 201, and the disaster recovery computing center box 3; The water immersion sensor 405 is installed at least at one of the following locations: the bottom of the tunnel-type underground chamber 1, near the equipment raised base 102, and the bottom of the disaster recovery computing center box 3. The fire alarm linkage interface 406 is used to receive linkage signals from external fire alarm systems and is responsible for transmitting abnormal signals from the disaster recovery computing center. Controller 407 connects to control the intake air valve 205, the supply air fan 209, the refrigeration regulating component 204, the three-way internal circulation valve 210, and the disaster recovery communication and power supply module 5. Controller 407 controls the operating mode of the air handling module 2 based on temperature, humidity, air quality, smoke, water immersion, and fire alarm linkage signals. Specifically: When the temperature, humidity, and air quality of the cross-ventilation air in the tunnel's original ventilation duct 6 meet the preset air intake conditions, the controller 407 opens the air intake valve 205 and the supply fan 209, and the air handling module 2 enters the natural cold source pre-cooling mode. The air flows sequentially through the air intake branch 201, filter 207, surface cooler 208, supply fan 209, supply branch 202, cold aisle 302, single-row cabinet 301, hot aisle 303, return air branch 203, three-way internal circulation valve 210, and exhaust branch 211. In this mode, the air handling module 2 directly utilizes the temperature conditions of the tunnel's cross-ventilation air natural cold source and the airflow organization of inlet intake and top exhaust to cool down the air, thereby reducing the need for mechanical cooling. When the air temperature and humidity in the tunnel's original ventilation duct 6 are high or do not meet the requirements, or when the heat load in the disaster recovery computing center cabinet 3 is high, the air handling module 2 enters the mechanical cooling supplement mode. Based on the natural cold source pre-cooling mode, the controller 407 turns on the cooling regulation component 204 to supplement the air temperature or dehumidify it through the surface cooler 208, so that the supplied air meets the cooling requirements of the single-row cabinet 301. When abnormal air quality, abnormal smoke concentration, external fire alarm signal triggering, or other unsuitable ventilation conditions are detected in the original ventilation duct 6 of the tunnel, the air handling module 2 enters the internal circulation cooling mode, keeps the cooling regulating component 204 open, and closes the air intake valve 205. The air flows sequentially through the filter 207, surface cooler 208, blower 209, air supply branch 202, cold aisle 302, single-row cabinet 301, hot aisle 303, return air branch 203, three-way internal circulation valve 210, and filter 207. The return air in the hot aisle 303 returns to the air handling module 2 via the return air branch 203, is processed by the cooling regulating component 204, and is then sent back to the cold aisle 302. This mode can maintain air circulation and equipment cooling inside the disaster recovery computing center box 3 when the external ventilation air of the tunnel is not suitable for entering the disaster recovery computing center box 3.

[0038] When the water immersion sensor 405 detects a water immersion condition, or the fire alarm linkage interface 406 receives a fire alarm linkage signal, the controller 407 controls the air handling module 2 to switch to a safe operation mode. The safe operation mode includes one or more of the following: closing the intake air branch 201, maintaining critical air supply or internal circulation cooling, outputting an alarm signal, linking to the external fire protection system, sending a load protection command to the disaster recovery communication power supply module 5, and recording abnormal events. If the abnormality is resolved, the controller 407, based on the original ventilation air in the tunnel and the internal environmental parameters of the disaster recovery computing center enclosure 3, restores the system to a natural cold source pre-cooling mode, a mechanical supplementary cooling mode, or an internal circulation cooling mode.

[0039] Furthermore, the cold aisle 302 is provided with an air outlet 304 that is connected to the air supply branch 202. The air outlet 304 is arranged in the length direction of the cold aisle 302. The air outlet 304 is connected and controlled by the detection and control module 4. The controller 407 can adjust the air supply volume of the air outlet 304 according to the inlet air temperature or power load.

[0040] The return air vent 305 of the hot aisle 303 is located in the upper part of the hot aisle 303 and near the rear door of the single-row cabinet 301 to collect the high-temperature return air. Furthermore, the hot aisle 303 is provided with a return air vent 305 that communicates with the return air branch 203. A return air valve 206 connected and controlled by the detection and control module 4 is provided between the return air vent 305 and the return air branch 203 to reduce the risk of exposure of the disaster recovery computing center enclosure 3 in abnormal situations.

[0041] Furthermore, such as Figure 4 As shown, the disaster recovery communication power supply module 5 includes a first communication link interface 501, a second communication link interface 502, a dual power input unit 503, an uninterruptible power supply unit 504, and a power distribution monitoring unit 505. The first communication link interface 501 and the second communication link interface 502 are respectively used to communicate with at least two nodes in the production center, the same-city disaster recovery center, or the off-site disaster recovery center. The dual power input unit 503 is used to connect to two power sources and supply power to all equipment in the tunnel-type underground chamber 1; The uninterruptible power supply unit 504 is used to supply power to critical equipment in the tunnel-type underground chamber 1 when the dual power input unit 503 is abnormal. The power distribution monitoring unit 505 is used to monitor the voltage, current, power, switch status and alarm status of all equipment in the tunnel-type underground chamber 1.

[0042] Furthermore, the servers, storage devices, and network devices within the disaster recovery computing center enclosure 3 are configured as backup nodes, query nodes, emergency takeover nodes, or edge disaster recovery nodes according to the needs of disaster recovery services. The disaster recovery communication power supply module 5 provides network and power access conditions. The specific data replication method, service switching strategy, and disaster recovery level can be configured separately according to the user's business system and industry requirements. This invention does not limit the application-layer disaster recovery strategy.

[0043] Furthermore, the tunnel-type underground chamber 1 is also equipped with video surveillance, access control, lighting, emergency lighting, and environmental monitoring terminals. The detection and control module 4 can upload data on temperature, humidity, air quality, smoke, water immersion, power supply, communication links, and fire alarm status to a remote operation and maintenance platform for centralized monitoring and remote alarming of the disaster recovery computing center within the confined tunnel space.

[0044] like Figure 6 As shown, a method for operating and controlling a tunnel-type confined space dual-channel disaster recovery computing center includes the following steps: S1, through the detection and control module 4, detects the temperature, humidity and air quality of the air in the original ventilation channel 6 of the tunnel, and detects the operating environment parameters of the cold aisle 302, hot aisle 303 and single row cabinet 301 in the disaster recovery computing center box 3; S2, when the ventilation air in the original ventilation channel 6 of the tunnel meets the preset air intake conditions, the air intake valve 205 is opened, so that the external underground ventilation air enters the cold aisle 302 after being filtered by the air handling module 2; the cold air flows along the front door direction of the single row of cabinets 301 in the cold aisle 302, and enters the inside of the server, storage device and network device through the front door of the cabinet; the heat generated by the equipment is carried out by the air flowing through the equipment, and the heated air is discharged into the hot aisle 303 through the rear door of the cabinet; the return air in the hot aisle 303 enters the return air branch 203 through the return air port 305, and is discharged or returned to the air handling module 2 through the exhaust branch 211; the air handling module 2 selects to continue to introduce tunnel ventilation air and perform mechanical cooling, or close the air intake branch 201 and perform internal circulation cooling according to the control command of the detection and control module 4; S3, when the temperature and humidity of the ventilation air in the original ventilation channel 6 of the tunnel or the heat load inside the disaster recovery computing center box 3 exceeds the preset range, the cooling regulation component 204 is activated to perform mechanical cooling or dehumidification, and the airflow organization of the intake branch 201 and the exhaust branch 211 is maintained. S4, when smoke, water immersion, abnormal air quality or fire alarm signal is detected, the detection control module 4 immediately closes the air intake valve 205 to prevent abnormal air from entering the air handling module 2 and the disaster recovery computing center box 3, and switches to safe operation mode to maintain the safe operation conditions of the disaster recovery computing equipment. After the safe operation mode is deactivated, S5 will resume the natural cold source pre-cooling mode, mechanical supplementary cooling mode, or internal circulation cooling mode based on the temperature, humidity, and air quality detection results, making full use of the tunnel through-draft natural cold source to achieve heat dissipation operation of the disaster recovery computing center.

[0045] This invention utilizes existing tunnel spaces such as highway tunnels, rail transit tunnels, mountain air-raid shelters, and engineering tunnels. By combining tunnel ventilation with natural cooling sources, inlet air intake and top exhaust, single-row cabinet 301 adaptation, dual-channel cold and hot airflow organization, multi-mode air handling, and a disaster recovery communication and power supply module 5, it provides an feasible infrastructure solution for building disaster recovery computing centers in various tunnel-type confined spaces. This reduces the occupation of ground land resources and reliance on mechanical cooling, and improves the continuous and stable operation of disaster recovery computing facilities under local disasters, external air anomalies, and tunnel environment disturbances.

[0046] The following example selects a former civil defense tunnel as the deployment carrier for a tunnel-type confined space disaster recovery computing center.

[0047] The tunnel's surrounding rock is primarily limestone. Preliminary investigations have shown that its load-bearing capacity, spatial dimensions, and geological stability meet the basic requirements for the construction of the computing center. In-situ 3D scanning of the tunnel was performed using real-time localization and mapping (SLAM) technology to construct a high-precision point cloud model and extract key geometric features. For example... Figure 7 As shown, the tunnel has a maximum width of about 5.3 meters and a maximum height of about 3.8 meters. It is characterized by its long and narrow shape, stable underground environment, and suitability as a low-disturbance deployment space for disaster recovery computing centers.

[0048] To mitigate the risks of surface seepage and dust pollution to the long-term operation of computing equipment, the surrounding rock of the tunnel underwent standardized waterproofing and dustproofing pretreatment. Simultaneously, to facilitate construction and subsequent operation and maintenance, a raised prefabricated computer room was constructed inside the tunnel as the core deployment area. The prefabricated computer room has internal dimensions of 15.0 m (length) × 3.4 m (width) × 2.0 m (height) (belonging to the category of narrow passages with a width of less than 4 m). This size is suitable for the tunnel's spatial structure and meets the requirements for the arrangement of computing equipment and optimized airflow organization in both channels.

[0049] In this embodiment, the computing power center is designed to support 25 standard server racks (single rack dimensions: 600 mm × 900 mm × 2000 mm, width × depth × height). Each rack has a rated power of 6 kW and a rack utilization rate of 50% (i.e., the actual operating heat load of a single rack is 3 kW). The heat load is evenly distributed within the rack space, which is consistent with the actual operating conditions of the computing power center. The core equipment of the auxiliary system includes an air handling module, a detection and control module, and a disaster recovery communication power supply module. The air handling module adopts the cold aisle directional air supply and cold and hot dual-channel isolation airflow organization structure proposed in this invention (hereinafter referred to as the dual-channel airflow organization structure), and a comparative experiment was conducted with the traditional raised floor air supply form to verify its energy-saving advantages.

[0050] Based on the construction scale of 25 server racks and the corresponding computing power requirements in this embodiment, the candidate tunnels were evaluated from multiple dimensions: in terms of load-bearing capacity, geological surveys confirmed that the load-bearing capacity of the tunnel floor and surrounding rock met the weight load requirements of the server racks (including equipment); in terms of ventilation, the tunnel's original ventilation channels could provide natural ventilation and meet the environmental regulation requirements during the operation of the disaster recovery computing center; at the same time, tunnels with unstable geology, serious leakage, or strong electromagnetic interference sources in the vicinity were excluded, and the aforementioned original civil defense engineering tunnel was finally selected as the deployment carrier.

[0051] To ensure the stability of the constant temperature environment inside the tunnel and improve its anti-interference capabilities and safety, the tunnel's inner wall was modified for airtightness: a moisture-proof and heat-insulating layer was laid across the entire inner wall, and the joints of the insulation layer were fully sealed with high-temperature resistant and aging-resistant silicone sealant to ensure no air leakage or moisture penetration; a fireproof and waterproof door (made of steel and equipped with sealing strips) was installed at the tunnel entrance. When the fireproof and waterproof door is closed, it can completely isolate the tunnel from the external environment, maintaining a constant internal temperature environment and effectively resisting external electromagnetic interference, dust, and the spread of risks in emergency situations.

[0052] Based on the dimensions of the prefabricated computer room and the operational requirements of the computing center, the prefabricated computer room and its supporting tunnel space are divided into two main functional areas: the computing core area and the auxiliary system area. The specific division and configuration are as follows: The core computing area houses server racks and a dual-channel airflow structure, serving as the central hub for computing power and cooling. The auxiliary system area, located adjacent to the prefabricated server room, centrally houses air handling modules, disaster recovery communication and power supply modules, and monitoring and control modules. The air handling modules filter, cool, supplement cooling, and regulate internal air circulation in the tunnel. The disaster recovery communication and power supply modules provide dual communication links, dual power supplies, uninterruptible power supply (UPS), and power distribution monitoring equipment. The monitoring and control modules collect and display tunnel environmental parameters, equipment operating status, and safety linkage signals, enabling intelligent operation and control of the disaster recovery computing center.

[0053] The server racks are arranged according to the principles of "maximizing space utilization, optimizing airflow, and facilitating maintenance and repair," with racks deployed in rows along the length of the tunnel. Within the core computing area, a single row of server racks is arranged along the length of the prefabricated server room, with no gaps between racks, arranged closely to save space. Each server rack has four anti-slip mounting bases (made of stainless steel, bolted to the bottom of the rack) installed at its base. These bases are secured to the prefabricated server room floor with expansion bolts, ensuring no risk of slippage in the tunnel environment. Simultaneously, cabling space is reserved between the racks and the prefabricated server room floor for power cables, network cables, and signal cables. Cables are laid in cable trays, categorized, and clearly labeled for easy future maintenance and expansion.

[0054] To address the challenges of the narrow and elongated tunnel space, a single-row rack system with dual-channel cold and hot airflow was designed. Directional airflow through cold aisle vents improves cold air utilization efficiency and reduces energy loss caused by hot and cold air mixing. Based on the total heat load of the computing core area and the dimensions of the prefabricated server room, air handling modules were configured. A cold aisle airflow structure was installed at one end of the server rack's air intake side, with the air handling module vents oriented towards the front door of the server rack. Air conditioning units were installed within the auxiliary system area, integrated with the prefabricated server room design. Cold air output from the air handling modules entered the cold aisle vents via air supply branches and flowed along the rack arrangement direction into the cold aisle, where it was drawn in through the front door of the server rack to cool the internal server equipment. The heated air was then exhausted through the rear door of the rack into the hot aisle and returned to the air handling modules via return air branches.

[0055] The above structural design creates a stable cold aisle on the air intake side of the server rack and an independent hot aisle on the air exhaust side. The cold and hot airflows flow along independent paths, avoiding the problem of mixing of cold and hot airflows in the traditional open air supply mode and improving cooling efficiency.

[0056] The core deployment of the auxiliary system area is to ensure the cooling operation, communication power supply, security monitoring, and intelligent control of the computing center. Air handling modules and disaster recovery communication power supply modules are installed within the auxiliary system area. A detection and control module is set up in the auxiliary system area to centrally display and manage the computing center's operational status data, including parameters such as rack temperature, humidity, air quality, smoke, water immersion, power supply status, and communication link status. Simultaneously, necessary fire alarm interfaces, emergency lighting equipment, and maintenance support facilities are configured within the auxiliary system area to meet the safe operation requirements of the confined space environment of the tunnel.

[0057] Monitoring and surveillance equipment is deployed throughout the core computing area, auxiliary system area, and original ventilation channels of the tunnel to achieve comprehensive monitoring of environmental parameters, equipment operating status, and safety risks. Temperature sensors are installed in the cold aisle, hot aisle, and server racks of the core computing area to monitor the temperature of cold and hot airflows and equipment operating temperature in real time. Humidity sensors are installed in the core computing area and auxiliary system area to monitor humidity changes within the tunnel and prevent equipment from getting damp. Smoke sensors are evenly distributed on the top of the core computing area, auxiliary system area, and original ventilation channels of the tunnel to monitor fire hazards in real time. Each server rack and air conditioning unit is equipped with an equipment operating status monitoring module to collect parameters such as equipment voltage, current, power, and operating time in real time and monitor equipment faults. All the above monitoring equipment is connected to the central control system via wired Ethernet to ensure stable and real-time data transmission. The central control system has data acquisition, equipment control, fault diagnosis, report generation, and remote operation and maintenance functions. It can receive data transmitted from each monitoring device in real time, analyze and process the data, and present it intuitively through an integrated display screen. At the same time, it can perform linkage control of equipment inside the tunnel-type underground chamber to realize intelligent operation and management of the computing center. When the smoke sensor detects excessive smoke concentration or the equipment operation status monitoring module detects serious equipment abnormalities (such as excessive voltage or sudden temperature rise), the central control system immediately triggers an audible and visual alarm and automatically initiates emergency response procedures: cutting off power to the faulty area (while maintaining power to emergency lighting), activating the emergency ventilation system, turning on emergency lighting fixtures and emergency evacuation signs to guide personnel to evacuate quickly; at the same time, the central control system remotely pushes alarm information and fault data to the maintenance personnel's terminal, facilitating timely on-site handling by maintenance personnel.

[0058] To verify the feasibility of the computing center deployment method in the narrow tunnel of this invention and the cooling efficiency and energy-saving advantages of the cold aisle air supply structure under the single-row cabinet dual-channel airflow organization mode, this embodiment also sets up a raised floor air supply comparison scheme. Under the benchmark of uniform air supply temperature (18°C) and total air supply volume, numerical simulation experiments are carried out using the computational fluid dynamics software CadenceReality DC Design to simulate and compare the temperature field in the computer room under the two air supply forms. The specific comparison scheme parameters are as follows: Raised floor air supply structure: The static pressure box is extended downward by 600mm from the original space of the prefabricated machine room, increasing the total height of the room to 2600mm. The floor is perforated with a perforation rate of 30%. The airflow is sent from the static pressure box through the floor grille into the cold aisle, heated by the cabinet, and then returned to the air conditioning return air from the rear hot aisle.

[0059] Dual-channel airflow organization structure: An installation space for air handling modules is set up on one side of the prefabricated server room, increasing the total depth of the room to 18000mm. The air handling modules supply air to the cold aisle through air supply branches, with the air supply outlets directionally facing the front door of the server rack. After entering the cold aisle, the cold air is drawn into the rack and undergoes heat exchange. The heated air is then discharged into the hot aisle through the rear door of the rack and returns to the return air side of the air handling modules.

[0060] The core governing equations used in the numerical simulation mainly include the continuity equation, momentum equation, energy equation, and k-ε equation, which are described in detail below: Continuity equation: ; In the formula, ρ is the density, with units of kg / m³. 3 t refers to time, measured in seconds; u x u y u z These represent the components of velocity in the x, y, and z directions, respectively.

[0061] Momentum equation: X direction: ; Y direction: ; Z direction: ; In the formula, S x S y S z Let represent the generalized source terms of the momentum conservation equation.

[0062] Energy conservation equation: ; In the formula, T represents thermodynamic temperature, with units of K; c p Specific heat capacity is expressed in J / (kg·K); S T This refers to the viscous dissipation term, measured in J.

[0063] k-ε equation: ; ; After simplification, their expressions are as follows: ; ; In the formula: Indicates the flow dissipation rate; μ t Represents the turbulent viscosity coefficient, with units of m. 2 / s;G k G b It represents the rate at which turbulent kinetic energy is generated by the velocity gradient or viscous and inertial forces.

[0064] To simplify calculations and highlight key influencing factors, and considering the actual operating environment of the narrow tunnel computing center, the following reasonable assumptions are made to the simulation model: Since the machine room is located in an underground tunnel, the temperature of the surrounding rock is relatively stable and there is no solar radiation. Therefore, it is assumed that the temperature of the prefabricated machine room wall remains constant, and the wall is sealed and insulated. Without considering the internal details of the server, the internal structure of the server is treated as a "black box," and only its overall heat load output is considered; Ignore heat sources other than IT equipment, such as heat generated by personnel and heat dissipation from lighting, and assume that IT equipment is a constant heat source during the calculation period; The air in the computer room satisfies the Boussinesq assumption and is suitable for flow scenarios where natural convection has a significant impact.

[0065] Both air supply methods use the same boundary condition benchmark to ensure the fairness of the comparative experiment: (1) Supply air temperature: uniformly set at 18°C ​​(in line with data center equipment cooling standards); (2) Enclosure structure: All prefabricated machine room enclosure structures are set as insulated walls with a heat flux density of 0; (3) Cabinet heat load: The actual heat load of a single cabinet is 3 kW, which is evenly distributed on the heat dissipation surface of the cabinet; (4) Air supply volume range: 18000 m³ / h~30000 m³ / h, with increments of 1000 m³ / h, for a total of 13 operating conditions.

[0066] Numerical simulations were performed on two air supply methods under 13 operating conditions to extract the maximum inflow temperature and inflow temperature at different heights of the server rack under each condition. Specific statistical results are as follows: Figure 8-11 As shown. Referring to data center operating specifications, this embodiment sets the following thermal assessment thresholds as the criteria for judging cooling effect: an inflow temperature below 27℃ is considered a safe operating state (marked in green); an inflow temperature between 27℃ and 32℃ indicates a risk of overheating (marked in yellow); and an inflow temperature above 32℃ indicates an overheating state (marked in red). Based on the above criteria, a detailed analysis of the experimental results for the two core air supply methods (raised floor air supply and dual-channel airflow organization) is conducted, as follows: like Figure 8As shown on the left, the raised floor air supply system exhibits significant uneven distribution of hot and cold air during long-distance airflow transport. Specifically, the inlet temperature of the cabinets near the air outlet is close to the air supply temperature of the air conditioning unit, ensuring safe operation. However, the cabinets further away from the air outlet experience insufficient cold air delivery due to air pressure attenuation during transport, leading to a localized negative pressure area on the air inlet side. This negative pressure area induces the recirculation of hot air within the hot aisle. The recirculated hot air mixes with the supplied cold air, causing a significant increase in the inlet temperature of the far-end cabinets. Numerical simulation results indicate that only when the total air volume is increased to 28,000 m³ / h can the superheated spots in all cabinets be eliminated, ensuring that the inlet temperature of all cabinets meets the requirements for safe operation. It should be noted that the numerical simulation model in this embodiment does not consider the impact of local resistance components such as cable laying and support legs beneath the raised floor on airflow. In practical engineering applications, if these local resistance components are taken into account, the flow resistance beneath the floor will further increase, potentially exacerbating the uneven distribution of hot and cold air. Therefore, when using raised floor air supply in actual engineering projects, parameters such as floor height, grille perforation rate, and cable layout need to be meticulously designed to reduce the adverse effects of local resistance on airflow organization.

[0067] like Figure 8 As shown on the right, the dual-channel airflow organization structure proposed in this invention effectively improves the uniformity of airflow distribution within the narrow space of the tunnel, without exhibiting a significant longitudinal (airflow delivery direction) temperature gradient. This air supply method employs a large-area grille outlet design, which promotes uniform horizontal dispersion of the cold airflow, maintaining the inflow temperature of both rack 1 (near the end) and rack 25 (far the end) at a low level, ensuring consistent cooling performance across racks in different locations. Combined with... Figure 9 The airflow velocity trajectory analysis shown indicates that the inflow temperature of the remote cabinet can be kept at a low level. The core reason is that a continuous and stable air supply path is formed in the cold aisle, and some of the cold air forms a return flow to supplement the airflow at the end of the cold aisle. This return flow can improve the problem of insufficient air supply in the remote area and effectively compensate for the air pressure attenuation during long-distance transportation. Numerical simulation results show that when the air supply volume reaches 22,000 m³ / h, the cold aisle air supply and dual-channel airflow organization mode of this invention can meet the cooling safety requirements of all cabinets. A comprehensive comparison of experimental results with the raised floor air supply mode shows that, to eliminate all hot spots and ensure the safe operation of the computing center, the minimum air supply volume required for the raised floor air supply mode is 28,000 m³ / h, while the minimum air supply volume required for the dual-channel airflow organization structure is 23,000 m³ / h. Based on the minimum air supply volume required for the dual-channel airflow organization structure, the minimum air supply volume required for the raised floor air supply mode is 21.7% higher, fully demonstrating the advantages of the single-row cabinet dual-channel airflow organization mode of this invention in reducing air supply demand and cooling energy consumption.

[0068] To analyze the distribution characteristics of the inflow temperature of the server racks under two air supply methods, this embodiment selects five representative server racks (racks 3, 8, 13, 18, and 23) located at the front, front-middle, middle, rear-middle, and rear sections, and conducts a specific analysis of their inflow temperature distribution at different heights under different air supply volumes. The simulation results for the raised floor air supply method are as follows: Figure 10 As shown, all five representative racks exhibit a general trend of "inflow temperature increasing with height." This trend stems from the structural characteristics of the airflow distribution at the bottom of the raised floor: after being delivered from the floor grille, cold air is transported upwards along the rack's height. During this process, the cold air flow gradually decreases, while simultaneously inducing hot air from the upper part of the rack to mix with the cold airflow, thus forming a vertical temperature gradient. It is noteworthy that the inflow temperature at the bottom of each rack did not drop to its lowest value as expected. (Combined with the airflow trajectory diagram of the terminal racks...) Figure 11 Analysis shows that the core reason for this phenomenon is that the cold air supply in the remote cabinet area is insufficient, which causes hot air in the hot aisle to be drawn into the static pressure box under the raised floor through gaps such as cable openings at the bottom of the cabinet. This mixed hot air is preferentially captured by the server equipment at the bottom of the cabinet, ultimately causing the inflow temperature at the bottom of the cabinet to rise abnormally. Simulation data shows that when the air volume is 18,000 m³ / h, the vertical inflow temperature difference of a single rack can reach more than 10℃. When the air volume is increased to 22,000 m³ / h, the maximum vertical temperature difference of a single rack still exceeds 10℃, and the inflow temperature along the airflow direction shows a significant upward trend. When the air volume is increased to 26,000 m³ / h, the inflow temperature of rack 3 at the near end can be stabilized at around 18℃, which is in a safe state. However, the overall inflow temperature of racks 8, 13, 18, and 23 at the middle and far ends is still relatively high, and the temperature difference at different heights within a single rack is significant. Even if the air volume is further increased to 30,000 m³ / h, only a few racks at the near end, such as racks 3 and 5, can achieve a uniform and stable temperature of around 18℃. The problem of uneven temperature distribution in the middle and far end racks has not been fundamentally solved.

[0069] Simulation results under a dual-channel airflow organization structure are as follows Figure 12As shown, the inflow temperature of the racks in different locations is generally similar, demonstrating the good temperature uniformity of this dual-channel airflow organization mode in the longitudinal direction, which can adapt to the airflow organization requirements of the narrow space of the tunnel computing center. However, its vertical temperature distribution is significantly affected by the air supply volume: when the air supply volume is 18000 m³ / h, due to insufficient air supply dynamic pressure, cold air and hot air are severely mixed; at the same time, due to the buoyancy effect, the less dense hot air tends to accumulate in the upper area of ​​the rack, resulting in a higher inflow temperature of the server equipment in this area. As the air volume gradually increases, the airflow organization effect of the dual-channel airflow organization structure is effectively improved: when the air volume increases to 22,000 m³ / h, the temperature difference in the vertical direction of the cabinet begins to decrease; when the air volume reaches 26,000 m³ / h, the maximum temperature difference at different heights within the same cabinet drops to about 5℃, and the uniformity of temperature distribution is significantly improved; when the air volume is further increased to 30,000 m³ / h, the temperature distribution at different heights of the cabinet becomes more uniform, but due to the slight influence of thermal buoyancy, the phenomenon that the inflow temperature of the upper equipment is slightly higher than that of the lower equipment still exists. This phenomenon is a normal airflow characteristic and will not affect the safe operation of the server equipment.

[0070] Based on the analysis of the above experimental results, it can be seen that compared with the traditional raised floor air supply method, the dual-channel airflow organization structure of the present invention has significant advantages in the application scenario of narrow tunnel computing centers: First, it has higher cooling efficiency. By isolating the cold aisle from the hot aisle, it reduces the short-circuit mixing of cold and hot airflows. Under the premise of meeting the safe cooling requirements of all racks, the minimum air supply volume required is lower, which can effectively reduce the energy consumption of the air handling module. Second, it has more uniform temperature distribution. The single row of racks is arranged along the length of the tunnel, and with the directional air supply outlets supplying air to the front door of the racks, it can effectively improve the airflow attenuation problem during long-distance air supply, ensuring that server equipment at all locations and heights can be within the safe operating temperature range. Third, it has stronger adaptability. This airflow organization mode does not require the installation of a tall overhead static pressure box under the prefabricated computer room, which can reduce the dependence on the tunnel's net height and floor structure. It is more suitable for the limited space characteristics of narrow tunnels such as highway tunnels, rail transit tunnels, and mountain air-raid shelters, and can achieve high-density equipment deployment under limited width conditions, making it easier to promote and apply in actual projects.

[0071] This embodiment successfully deployed a tunnel-type confined space disaster recovery computing center by modifying and utilizing the original civil defense tunnel. Through the coordinated layout of the computing core area and auxiliary system area, the server equipment, air handling equipment, communication power supply equipment, and detection and control system were integrated, and all implementation effects achieved the design goals. In terms of space utilization, relying on the natural space of the tunnel, a single row of server racks was arranged along the length of the tunnel, and the computing core area and auxiliary system area were compactly and collaboratively deployed. This allowed for the integrated deployment of server equipment, air handling equipment, disaster recovery communication power supply equipment, and the detection and control system platform within limited width, without requiring additional ground land resources, thus solving the problem of large footprint in traditional ground-based computing centers. In terms of energy consumption, through the optimized design of the dual-channel airflow organization structure, cold air enters from the front door of the rack, and hot air is centrally discharged from the rear door, reducing short-circuiting and mixing of hot and cold airflows and improving air supply efficiency. Compared with the traditional raised floor air supply method, it saves more than 17.8% of the air supply volume. This significantly reduces the operating costs of the computing center. In terms of security, through enhanced tunnel sealing, comprehensive monitoring equipment deployment, and emergency response mechanisms, it comprehensively monitors the original ventilation air in the tunnel, as well as the temperature, humidity, air quality, smoke, water immersion, equipment operating status, power supply status, and communication link status in the core computing area and auxiliary system area. This effectively resists risks such as external electromagnetic interference, dust, and fire, significantly improving the operational stability and security of the computing center compared to traditional ground-based computing centers. In terms of intelligence, the detection and control system platform enables real-time monitoring and coordinated control of the computing center's environmental parameters and equipment operating status, significantly improving operational efficiency and achieving intelligent and efficient operation and management of the computing center.

[0072] This invention screens and adapts existing tunnel spaces, such as those in civil defense engineering projects, by employing a single row of server racks arranged along the length of the tunnel. Cold and hot aisles are constructed on the front and rear sides of the server racks, respectively, forming a dual-channel isolated airflow organization with directional air supply in the cold aisle and centralized air recovery in the hot aisle. At the same time, air handling equipment, disaster recovery communication power supply equipment, and a detection and control system platform are centrally configured in the auxiliary system area. This effectively solves the problems of traditional ground computing centers, such as large footprint, difficulty in adapting traditional multi-row server racks to narrow tunnel spaces, high energy consumption of raised floor air supply, and insufficient resistance to disturbance in underground environments. Comparative experimental results show that, under the condition that the number of server racks, the heat load of a single rack, the supply air temperature, and the total supply air volume evaluation range remain consistent, the dual-channel airflow organization mode of this invention can meet the safe cooling requirements of all racks with a minimum supply air volume of 23,000 m³ / h, while the minimum supply air volume required by the traditional raised floor air supply method is 28,000 m³ / h. Compared with the traditional raised floor air supply method, this invention can save more than 17.8% of the supply air volume, proving its technical effectiveness in reducing air supply energy consumption, improving temperature uniformity, and suppressing the mixing of hot and cold airflows. Therefore, this invention can be applied to the construction and deployment of disaster recovery computing centers in highway tunnels, rail transit tunnels, mountain air-raid shelters, engineering tunnels, and other narrow and confined tunnel-like spaces.

Claims

1. A tunnel-type confined space dual-channel disaster recovery computing center, comprising a tunnel-type underground chamber (1) connected to the tunnel's original ventilation channel (6), characterized in that, The tunnel-type underground chamber (1) is equipped with: The disaster recovery computing center box (3) is equipped with a single row of cabinets (301). The front door and rear door of the single row of cabinets (301) form a cold aisle (302) and a hot aisle (303) with the side wall of the disaster recovery computing center box (3), respectively. The air handling module (2) includes a refrigeration regulating component (204), an air intake branch (201), and a return air branch (203). One end of the air intake branch (201) is connected to the original ventilation channel (6) of the tunnel and is equipped with an air intake valve (205). The other end is connected to the cold aisle (302) through a filter (207), a surface cooler (208), a blower (209), and an air supply branch (202) connected in sequence. The refrigeration regulating component (204) is connected to the surface cooler (208). One end of the return air branch (203) is connected to the hot aisle (303), and the other end is connected to a three-way internal circulation valve (210) and an exhaust branch (211) connected in sequence. The other port of the three-way internal circulation valve (210) is connected to the filter (207). The detection and control module (4) is used to detect the air in the original ventilation channel (6) of the tunnel and the environmental status inside the disaster recovery computing center box (3), and adjust the air handling module (2) and the disaster recovery communication power supply module (5) according to the detection results. The disaster recovery communication power supply module (5) provides network and power access conditions to supply power to all equipment in the tunnel-type underground chamber (1).

2. The tunnel-type confined space dual-channel disaster recovery computing center according to claim 1, characterized in that, The tunnel-type underground chamber (1) is a type of confined space formed by highway tunnels, rail transit tunnels, mountain air-raid shelter tunnels, engineering tunnels or mine roadways. The entrance of the tunnel-type underground chamber (1) is equipped with a fireproof and waterproof door (101). The tunnel-type underground chamber (1) is equipped with an equipment lifting base (102) to support and place all equipment. A drainage ditch (103) and a water collection alarm unit (104) are provided near the equipment lifting base (102).

3. The tunnel-type confined space dual-channel disaster recovery computing center according to claim 2, characterized in that, The detection and control module (4) includes a controller (407) and its connected temperature sensor (401), humidity sensor (402), air quality sensor (403), smoke sensor (404), water immersion sensor (405), and fire linkage interface (406). Temperature sensor (401) is installed at least once in one of the following locations: the original ventilation duct (6), the cold aisle (302), the hot aisle (303), and the air intake side of the single-row cabinet (301); An air quality sensor (403) is installed in the original ventilation channel (6) or air intake branch (201) of the tunnel. The flue gas sensor (404) is installed at least in one of the following locations: the original ventilation channel (6) of the tunnel, the air intake branch (201), and the disaster recovery computing center box (3); The water immersion sensor (405) is installed at least at one of the following locations: the bottom of the tunnel-type underground chamber (1), near the equipment raised base (102), and the bottom of the disaster recovery computing center box (3); The fire alarm linkage interface (406) is used to receive linkage signals from external fire alarm systems and is responsible for transmitting abnormal signals from the disaster recovery computing center. The controller (407) is connected to control the air intake valve (205), the blower (209), the refrigeration regulating component (204), the three-way internal circulation valve (210), and the disaster recovery communication power supply module (5).

4. The tunnel-type confined space dual-channel disaster recovery computing center according to claim 3, characterized in that, The air handling module (2) includes: In the natural cold source pre-cooling mode, air flows sequentially through the intake branch (201), filter (207), surface cooler (208), blower (209), supply branch (202), cold aisle (302), single row cabinet (301), hot aisle (303), return air branch (203), three-way internal circulation valve (210), and exhaust branch (211). In the mechanical cooling mode, the refrigeration regulating component (204) is activated on the basis of the natural cold source pre-cooling mode to supplement the air with cooling or dehumidification through the surface cooler (208); In the internal circulation cooling mode, the cooling regulating component (204) is kept on and the air intake valve (205) is closed. The air flows through the filter (207), surface cooler (208), blower (209), air supply branch (202), cold aisle (302), single row cabinet (301), hot aisle (303), return air branch (203), three-way internal circulation valve (210), and filter (207) in sequence, forming an internal air circulation in the disaster recovery computing center box (3).

5. The tunnel-type confined space dual-channel disaster recovery computing center according to claim 1, characterized in that, The cold aisle (302) is provided with an air outlet (304) that is connected to the air supply branch (202). The air outlet (304) is set in the direction of the length of the cold aisle (302). The air outlet (304) is connected and controlled by the detection and control module (4).

6. The tunnel-type confined space dual-channel disaster recovery computing center according to claim 1, characterized in that, The hot aisle (303) is provided with a return air inlet (305) that is connected to the return air branch (203), and a return air valve (206) connected and controlled by the detection and control module (4) is provided between the return air inlet (305) and the return air branch (203).

7. A tunnel-type confined space dual-channel disaster recovery computing center according to claim 1, characterized in that, A partition (306) is provided between the cold passage (302) and the hot passage (303) to maintain a stable dual-channel isolation airflow organization along the tunnel direction.

8. A tunnel-type confined space dual-channel disaster recovery computing center according to claim 1, characterized in that, The disaster recovery communication power supply module (5) includes a first communication link interface (501), a second communication link interface (502), a dual power input unit (503), an uninterruptible power supply unit (504), and a power distribution monitoring unit (505). The first communication link interface (501) and the second communication link interface (502) are respectively used to communicate with at least two nodes in the production center, the same-city disaster recovery center, or the off-site disaster recovery center. The dual power input unit (503) is used to connect to two power sources and to supply power to all equipment in the tunnel-type underground chamber (1); The uninterruptible power supply unit (504) is used to supply power to critical equipment in the tunnel-type underground chamber (1) when the dual power input unit (503) is abnormal; The power distribution monitoring unit (505) is used to monitor the voltage, current, power, switch status and alarm status of all equipment in the tunnel-type underground chamber (1).

9. The operation control method for a tunnel-type confined space dual-channel disaster recovery computing center according to claim 4, characterized in that, Includes the following steps: S1, detect the temperature, humidity and air quality of the air in the original ventilation channel (6) of the tunnel, and detect the operating environment parameters of the cold aisle (302), hot aisle (303) and single-row cabinet (301) in the disaster recovery computing center box (3); S2, when the ventilation air in the original ventilation channel (6) of the tunnel meets the preset air intake conditions, the air intake valve (205) is opened so that the external underground ventilation air enters the cold channel (302) after being filtered by the air handling module (2). S3, when the temperature and humidity of the ventilation air in the original ventilation channel (6) of the tunnel or the heat load inside the disaster recovery computing center box (3) exceeds the preset range, the cooling regulation component (204) is activated to perform mechanical cooling or dehumidification, and the airflow organization of the intake branch (201) and exhaust branch (211) is maintained. S4, when smoke, water immersion, abnormal air quality or fire alarm signal is detected, close the air intake valve (205) and switch to safe operation mode; After the safe operation mode is deactivated, S5 will resume the natural cold source pre-cooling mode, mechanical supplementary cooling mode, or internal circulation cooling mode based on the temperature, humidity, and air quality detection results, making full use of the tunnel through-draft natural cold source to achieve heat dissipation operation of the disaster recovery computing center.

10. The operation control method for a tunnel-type confined space dual-channel disaster recovery computing center according to claim 9, characterized in that, The safe operation modes include closing the air intake valve (205), internal circulation cooling mode, outputting alarm signals, linking the external fire protection system, sending load protection instructions to the disaster recovery communication power supply module (5), and recording one or more abnormal events.

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