Cavern type data center based on underground river construction and construction method and operation method thereof

Abstract

The invention discloses a cave depot type data center based on underground river construction and a construction method and an operation method thereof, and belongs to the technical field of cave depot type data center construction. The data center comprises a mountain body, an underground river is developed in the mountain body, the underground river flows through a karst cave in the mountain body, a plurality of equipment storage tunnels are arranged on one side or two sides of the underground river in the mountain body, and the equipment storage tunnels are communicated with the karst cave through slope connecting tunnels. An equipment cabinet and a liquid heat exchanger are arranged in the equipment storage tunnel, a river water conveying assembly is connected to the liquid heat exchanger, and the end, away from the liquid heat exchanger, of the river water conveying assembly penetrates through the slope connection tunnel and extends into the underground river. The liquid cooling mode is adopted for cooling and heat dissipation of the equipment cabinet, the direct temperature control mode remarkably improves the heat dissipation and cooling effects of the IT equipment cabinet, meanwhile, the heat exchange efficiency is high, and the operation energy consumption of a data center can be reduced.

Description

Technical Field

[0001] The present invention relates to a cave-type data center built based on an underground river and a construction method and an operation method thereof, belonging to the technical field of cave-type data center construction. Background Art

[0002] As a carrier of massive data, the demand for data centers has increased significantly, and the construction market will be in a rapid development stage for a long period of time. In order to meet the needs of data center security performance, Guizhou Province proposed and built a cave-type data center that is completely buried inside the mountain. It uses the external mountain as a shelter, which is significantly better than other types of data centers in terms of structural protection capabilities and has become a new direction for the development of data centers. However, the mountain outside the cave-type data center is relatively closed and cannot meet the rapid heat dissipation needs of the data center's IT equipment.

[0003] A Chinese patent document with publication number CN118292682A discloses a combined ecological building complex of a cavern-type data center. During operation, the computers inside the cavern of the horizontal data center continuously generate heat when working, causing the air to rise steadily and gather in the arch of the cavern of the horizontal data center. At this time, the hot air gathered at the top of the cross-section of the cavern of the horizontal data center is absorbed by the ceiling suction fan, and transmitted to the first heat exchanger through the hot air delivery pipe. The first heat exchanger converts the hot air into cold air through heat absorption treatment, and transmits it to the outside through the cold air delivery pipe, and then diffuses it relatively evenly into the cavern of the horizontal data center through the side vertical blower arranged on the side wall of the cavern of the horizontal data center, thereby realizing temperature control and regulation of the cavern of the horizontal data center.

[0004] However, the cave-type data center still has the following shortcomings: First, the air temperature in the horizontal data center cave is regulated to dissipate heat and cool down the IT equipment in the data center. This indirect temperature control method has a very limited effect on the heat dissipation and cooling of IT equipment. Second, the air in the horizontal data center cavern is used for heat exchange with IT equipment, the first heat exchanger, and inside the first heat exchanger, which has low heat exchange efficiency, further reducing the heat dissipation and cooling effect of the air in the horizontal data center cavern on IT equipment, and will lead to an increase in the energy consumption of the cavern-type data center; Third, the continuous operation of the added ceiling suction fans and side supply fans will also lead to an increase in the operating energy consumption of the cave-type data center. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a cave-type data center built based on an underground river, and a construction method and an operation method thereof.

[0006] The present invention is achieved through the following technical solutions: A cavern-type data center built on an underground river comprises a mountain, wherein an underground river is developed in the mountain, and the underground river flows through a karst cave in the mountain, wherein a plurality of equipment storage tunnels are arranged on one side or both sides of the underground river in the mountain, wherein the plurality of equipment storage tunnels are connected to the karst caves through slope connection tunnels respectively, wherein the bottom elevation of the equipment storage tunnel is higher than the highest water level of the underground river, and one end of the slope connection tunnel close to the karst cave is inclined downward relative to the other end, wherein an equipment cabinet and a liquid heat exchanger are arranged in the equipment storage tunnel, wherein the liquid heat exchanger is connected to the equipment cabinet through a coolant delivery component, wherein the liquid heat exchanger is connected to a river water delivery component, wherein one end of the river water delivery component away from the liquid heat exchanger passes through the slope connection tunnel and extends into the underground river; The river water transport assembly includes a river water cooling pipe and a river water heat pipe. One end of the river water cooling pipe is connected to the water inlet of the liquid heat exchanger, and the other end extends into the underground river, and a river water circulation pump is installed at this end. One end of the river water heat pipe is connected to the water outlet of the liquid heat exchanger, and the other end extends to just above the underground river or into the underground river, and this end is located downstream of the river water circulation pump. A jacket is provided on the outer wall of the equipment cabinet; The coolant delivery assembly includes a coolant cold pipe and a coolant heat pipe, both of which are connected to the jacket on the outer wall of the equipment cabinet and the liquid heat exchanger, and a coolant circulation pump is provided on the coolant cold pipe.

[0007] A steel fiber shotcrete layer is provided on the inner wall of the cave.

[0008] Several of the equipment storage tunnels are arranged side by side and laterally along the underground river.

[0009] When equipment storage tunnels are provided on both sides of the underground river in the mountain, the equipment storage tunnel on one side of the underground river is connected one-to-one with the equipment storage tunnel on the other side of the underground river through a suspension bridge.

[0010] Roads and supporting buildings are provided on one or both sides of the underground river outside the mountain. The road is connected to the entrances of all equipment storage tunnels on the same side of the underground river. The supporting buildings are located on one side of the road and are arranged close to the road.

[0011] A power tunnel is also provided in the mountain, and the bottom elevation of the power tunnel is higher than the highest water level of the underground river. One end of the power tunnel is connected to the cave, and the other end is connected to the road. A voltage conversion device, a distribution box and a power storage device are provided in the power tunnel. The distribution box and the power storage device are both electrically connected to the voltage conversion device, and the distribution box is electrically connected to the power storage device. The distribution box is connected to a plurality of waterproof cables A, and one end of the waterproof cables A away from the distribution box extends into a power tunnel, a karst cave, a slope connection tunnel or an equipment storage tunnel.

[0012] A water retaining dam is provided on the underground river near the power tunnel, and the water retaining dam is located in the cave. The maximum water storage level of the water retaining dam is lower than the elevation of the bottom surface of the equipment storage tunnel.

[0013] The water retaining dam is provided with hydroelectric power generation equipment, and the cave is provided with a plurality of pipeline layout hangers. The hydroelectric power generation equipment is electrically connected to the voltage conversion equipment in the power tunnel through a waterproof cable B, and the middle part of the waterproof cable B is installed on the pipeline layout hanger.

[0014] A construction method of a cave-type data center built based on an underground river, characterized in that it includes the following steps: Step 1: Select the mountain, underground river and cave where the cave-type data center is to be built, and build roads and construction access roads outside the selected mountain; Step 2: Number the equipment storage tunnels on both sides of the underground river respectively, and take the odd-numbered sequence on one side of the underground river and the even-numbered sequence on the other side of the underground river as the first batch of equipment storage tunnels to be constructed, and take all the remaining equipment storage tunnels as the second batch; Step 3: First construct the first batch of equipment storage tunnels. After the construction length of the first batch of equipment storage tunnels exceeds 50 meters, start the construction of the second batch of equipment storage tunnels; The power tunnel will be constructed simultaneously with the first batch of equipment storage tunnels until it is connected to the karst cave, and the bottom elevation of the power tunnel will be ensured to be higher than the highest water level of the underground river; The construction direction of all equipment storage tunnels and power tunnels is to gradually advance from the road side to the underground river side; Step 4: After the first batch of equipment storage tunnels are constructed to the designed length, continue to construct the slope connection tunnel corresponding to the first batch of equipment storage tunnels; Step 5: After the second batch of equipment storage tunnels are constructed to the designed length, continue to construct the slope connection tunnel corresponding to the second batch of equipment storage tunnels; Step 6: After all slope connection tunnels are constructed, a suspension bridge will be constructed to connect the equipment storage tunnels on both sides of the underground river one by one; Step 7: Using the suspension bridge as a working platform, clear the dangerous rocks on the inner wall of the cave, and then spray steel fiber shotcrete on the inner wall of the cave to reinforce the inner wall of the cave; Step 8: Use the power tunnel as a material transportation channel to construct a water retaining dam; Step 9: Construct supporting buildings and complete the installation and connection of equipment in the power tunnel, water retaining dam, slope connection tunnel and equipment storage tunnel.

[0015] When constructing the slope connection tunnels in step 4 and step 5, the penetration times of the multiple slope connection tunnels and the karst caves are staggered.

[0016] A method for operating a cave-type data center built based on a dark river, characterized in that it includes the following steps: Step A, closing both ends of the equipment storage tunnel and filling the equipment storage tunnel with non-flammable gas; Step B, start the coolant circulation pump to circulate the coolant in the jacket on the outer wall of the equipment cabinet, the coolant cold pipe, the coolant heat pipe and the liquid heat exchanger; Step C, start the river water circulation pump, and pump the river water in the underground river to the liquid heat exchanger for heat exchange with the coolant. The coolant that has completed heat exchange in the liquid heat exchanger flows back to the jacket on the outer wall of the equipment cabinet to cool down and dissipate heat of the equipment cabinet. The river water that has completed heat exchange in the liquid heat exchanger is discharged into the underground river downstream of the river water circulation pump through the river water heat pipe.

[0017] After the equipment storage tunnel is filled with non-flammable gas, the internal oxygen concentration is lower than 15%.

[0018] The beneficial effects of the present invention are: 1. The river water in the underground river is transported to the liquid heat exchanger through the river water transport component. The river water exchanges heat with the coolant in the liquid heat exchanger. The coolant cooled by the river water is transported to the equipment cabinet through the coolant transport component to directly cool and dissipate the heat of the equipment cabinet. This direct temperature control method significantly improves the heat dissipation and cooling effect of the IT equipment cabinet.

[0019] 2. On the one hand, making full use of natural caves to build cave-type data centers reduces the amount of excavation of cave-type data centers and can significantly reduce the construction cost of cave-type data centers; on the other hand, making full use of natural, cold underground river water to exchange heat with the coolant in the liquid heat exchanger, and ultimately achieving heat dissipation and cooling of IT equipment cabinets through the coolant, significantly reducing the operating cost of the cave-type data center.

[0020] 3. The heat exchange between river water and the coolant in the liquid heat exchanger is carried out to achieve effective utilization of natural resources and reduce the operating costs of the cave-type data center. In addition, the continuous flow of river water can continuously maintain a relatively low temperature, ensuring the heat exchange efficiency and heat exchange effect between it and the coolant, and further ensuring the heat dissipation and cooling effect of the coolant on the IT equipment cabinet; the river water that completes the heat exchange with the coolant in the liquid heat exchanger is discharged into the underground river water downstream of the river water circulation pump through the river water heat pipe, with low energy consumption; at the same time, it can prevent the hot water discharged by the river water heat pipe from causing the river water temperature at the river water circulation pump to rise, thereby ensuring that the river water pumped into the liquid heat exchanger continuously maintains a low temperature, thereby achieving the purpose of ensuring the heat exchange effect between the river water and the coolant in the liquid heat exchanger.

[0021] 4. Compared with the existing method of using air to exchange heat with air, the use of river water and coolant for heat exchange has high heat exchange efficiency, which can improve the cooling effect of coolant on IT equipment cabinets, and also help reduce the operating energy consumption of cave-type data centers. There is no need to add suction fans and supply fans to continuously operate to dissipate heat and cool equipment cabinets, which further reduces the operating energy consumption of cave-type data centers.

[0022] 5. The main structure of the data center is entirely set inside the mountain, which significantly improves the structural protection capabilities of the entire data center and can effectively meet the information data security protection needs during wartime.

[0023] 6. The hydroelectric power generation equipment installed in the water-blocking dam cooperates with the voltage conversion equipment, distribution box and power storage equipment in the power tunnel to provide the power required for the operation of the data center's electrical equipment, thereby realizing the green and low-carbon operation of the data center. In addition, the voltage conversion equipment is also electrically connected to the external power grid line. When the hydroelectric power generation equipment fails or the power generation is insufficient, or when the underground river is in the dry season, the external power grid line can be used to assist the voltage conversion equipment with power supply, further ensuring that the cave-type data center can operate continuously, safely and stably. In extreme cases where neither the hydroelectric power generation equipment nor the external power grid line can supply power to the data center's electrical equipment, it can also be powered by batteries.

[0024] 7. The equipment storage tunnels on both sides of the underground river shall be constructed in two batches. After the excavation length of the first batch of equipment storage tunnels exceeds 50 meters, the excavation of the second batch of equipment storage tunnels shall be started to reduce the mutual interference of adjacent equipment storage tunnels during the construction process, and at the same time help to ensure the structural stability of the mountain and the cave.

[0025] 8. Fill the equipment storage tunnel with harmless and non-flammable gases such as nitrogen, and ensure that the oxygen concentration in the equipment storage tunnel is lower than 15%, so as to avoid fire in the equipment storage tunnel and significantly improve the operational safety of the cave-type data center. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention in Example 1; Figure 2 It is a longitudinal cross-sectional view of the present invention in Embodiment 1; Figure 3 It is a schematic diagram of the assembly structure of the equipment storage tunnel, equipment cabinet, liquid heat exchanger, coolant delivery assembly, river water delivery assembly, slope connection tunnel, cave, suspension bridge, hot wastewater discharge pipeline and underground river of the present invention in Example 1; Figure 4 It is a schematic diagram of the assembly structure of the power tunnel, karst cave, underground river, dam and hot wastewater discharge pipeline of the present invention in Example 1; Figure 5 It is a block diagram of the power supply principle of the hydroelectric power generation equipment of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention in Embodiment 2 when the air in the equipment storage tunnel is changed; Figure 7 It is a plan layout diagram of the present invention in Example 3; Figure 8 It is a schematic diagram of the assembly structure of the equipment storage tunnel, equipment cabinet, liquid heat exchanger, coolant delivery assembly, river water delivery assembly, slope connection tunnel, karst cave, hot wastewater discharge pipeline and underground river of the present invention in Example 3; Fig. 9 This is a structural schematic diagram of the present invention in Example 4 when changing air in the equipment storage tunnel.

[0027] In the figure: 1-mountain, 2-underground river, 3-karst cave, 31-pipeline layout pendant, 4-equipment storage tunnel, 5-slope connecting tunnel, 6-water retaining dam, 61-hydroelectric power generation equipment, 7-equipment cabinet, 8-liquid heat exchanger, 81-coolant delivery assembly, 811-coolant cold pipe, 812-coolant heat pipe, 813-coolant circulation pump, 83-river water delivery assembly, 831-river water cold pipe, 832-river water heat pipe, 833-river water circulation pump, 9-hot wastewater discharge pipeline, 10-power tunnel, 101-voltage conversion equipment, 102-distribution box, 103-power storage equipment, 11-road, 12-supporting buildings, 13-suspension bridge, 14-waterproof cable A, 15-waterproof cable B. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0029] Embodiment 1: like Figures 1 to 5As shown, a cave-type data center built based on an underground river described in the present invention includes a mountain 1, in which an underground river 2 is developed, and the underground river 2 flows through a cave 3 in the mountain 1, and multiple equipment storage tunnels 4 are arranged on both sides of the underground river 2 in the mountain 1, and the multiple equipment storage tunnels 4 are connected to the cave 3 through a slope connecting tunnel 5 respectively, and the bottom elevation of the equipment storage tunnel 4 is higher than the highest water level of the underground river 2, and one end of the slope connecting tunnel 5 close to the cave 3 is inclined downward relative to the other end, and an equipment cabinet 7 and a liquid heat exchanger 8 are arranged in the equipment storage tunnel 4, and the liquid heat exchanger 8 is connected to the equipment cabinet 7 through a coolant conveying component 81, and a river water conveying component 83 is connected to the liquid heat exchanger 8, and the end of the river water conveying component 83 away from the liquid heat exchanger 8 passes through the slope connecting tunnel 5 and extends into the underground river 2.

[0030] When in use, the bottom elevation of the equipment storage tunnel 4 is higher than the highest water level of the underground river 2, and the end of the slope connecting tunnel 5 close to the cave 3 is tilted downward relative to the other end, which can prevent the river water in the underground river 2 from flowing into the equipment storage tunnel 4, effectively ensuring the safe operation of the equipment installed in the equipment storage tunnel 4.

[0031] The river water in the underground river 2 is transported to the liquid heat exchanger 8 through the river water transport component 83, and the river water exchanges heat with the coolant in the liquid heat exchanger 8. The coolant cooled by the river water is transported to the equipment cabinet 7 through the coolant transport component 81, and the equipment cabinet 7 is directly cooled and dissipated. This direct temperature control method significantly improves the heat dissipation and cooling effect of the IT equipment cabinet 7. Compared with the method of using air to exchange heat with air in the prior art, the heat exchange efficiency is high by using river water and coolant, which can improve the heat dissipation and cooling effect of the coolant on the IT equipment cabinet 7, and also helps to reduce the operating energy consumption of the cave-type data center. There is no need to add equipment such as suction fans and supply fans to continuously operate to dissipate heat and cool the equipment cabinet 7, which further reduces the operating energy consumption of the cave-type data center.

[0032] On the one hand, full use is made of the natural cave 3 to build a cave-type data center, which reduces the excavation volume of the cave-type data center and can significantly reduce the construction cost of the cave-type data center; on the other hand, full use is made of the natural, cold underground river 2 water to exchange heat with the coolant in the liquid heat exchanger 8, and finally the IT equipment cabinet 7 is dissipated and cooled by the coolant, which significantly reduces the operating cost of the cave-type data center.

[0033] The river water transport component 83 includes a river water cooling pipe 831 and a river water heat pipe 832. One end of the river water cooling pipe 831 is connected to the water inlet of the liquid heat exchanger 8, and the other end extends into the underground river 2, and a river water circulation pump 833 is installed at this end. One end of the river water heat pipe 832 is connected to the water outlet of the liquid heat exchanger 8, and the other end extends to directly above the underground river 2 or to the underground river 2, and this end is located downstream of the river water circulation pump 833. The river water from the underground river 2 is pumped to the liquid heat exchanger 8 through the river water circulation pump 833, and the river water exchanges heat with the coolant in the liquid heat exchanger 8, thereby achieving the purpose of cooling the coolant; the heat exchange between the river water and the coolant in the liquid heat exchanger 8 realizes the effective utilization of natural resources and reduces the operating cost of the cave-type data center. In addition, the continuous supply of river water can continuously maintain a relatively low temperature, ensuring the heat exchange efficiency and heat exchange effect between it and the coolant, and further ensuring the heat dissipation and cooling effect of the coolant on the IT equipment cabinet 7; the river water that completes the heat exchange with the coolant in the liquid heat exchanger 8 is discharged into the river water of the underground river 2 downstream of the river water circulation pump 833 through the river water heat pipe 832, with low energy consumption; at the same time, it can prevent the hot water discharged by the river water heat pipe 832 from causing the river water temperature at the river water circulation pump 833 to rise, thereby ensuring that the river water pumped to the liquid heat exchanger 8 continuously maintains a low temperature, thereby achieving the purpose of ensuring the heat exchange effect between the river water and the coolant in the liquid heat exchanger 8.

[0034] A jacket is provided on the outer wall of the equipment cabinet 7; The cooling liquid delivery component 81 includes a cooling liquid cooling pipe 811 and a cooling liquid heat pipe 812. The cooling liquid cooling pipe 811 and the cooling liquid heat pipe 812 are both connected to the jacket on the outer wall of the equipment cabinet 7 and the liquid heat exchanger 8, and a cooling liquid circulation pump 813 is provided on the cooling liquid cooling pipe 811.

[0035] A steel fiber shotcrete layer is provided on the inner wall of the karst cave 3. The steel fiber shotcrete layer is used to reinforce and seal the inner wall of the karst cave 3, thereby improving the stability of the karst cave 3.

[0036] Multiple equipment storage tunnels 4 are arranged side by side and laterally along the underground river 2.

[0037] When equipment storage tunnels 4 are provided on both sides of the underground river 2 in the mountain 1, the equipment storage tunnel 4 on one side of the underground river 2 is connected to the equipment storage tunnel 4 on the other side of the underground river 2 via the suspension bridge 13. The staff can enter the equipment storage tunnel 4 on the other side of the underground river 2 from the equipment storage tunnel 4 on one side of the underground river 2 via the suspension bridge 13, which is convenient for the staff to manage, maintain and repair the equipment in the equipment storage tunnel 4.

[0038] A road 11 and supporting buildings 12 are arranged on both sides of the underground river 2 outside the mountain 1. The road 11 is connected to the openings of all equipment storage tunnels 4 on the same side of the underground river 2. The supporting buildings 12 are arranged on one side of the road 11 and close to the road 11. The supporting buildings 12 include dormitories, canteens, etc.

[0039] A power tunnel 10 is also provided in the mountain 1, and the bottom elevation of the power tunnel 10 is higher than the highest water level of the underground river 2. One end of the power tunnel 10 is connected to the cave 3, and the other end is connected to the road 11. A voltage conversion device 101, a distribution box 102 and a power storage device 103 are provided in the power tunnel 10. The distribution box 102 and the power storage device 103 are both electrically connected to the voltage conversion device 101, and the distribution box 102 is electrically connected to the power storage device 103. The distribution box 102 is connected to a plurality of waterproof cables A14, and one end of the waterproof cable A14 away from the distribution box 102 extends to the power tunnel 10, the cave 3, the slope connection tunnel 5 or the equipment storage tunnel 4. When in use, the voltage conversion device 101 is a step-down transformer, and the power storage device 103 includes a rectifier, a battery and an inverter. The electricity after being stepped down by the step-down transformer is directly delivered to the distribution box 102 in one way to power the electrical equipment of the present invention, and is delivered to the rectifier in the other way, and is stored in the battery after being rectified by the rectifier. When the hydroelectric power generation equipment 61 has a short-term fault, or when the water volume of the underground river 2 is insufficient, resulting in the power generation of the hydroelectric power generation equipment 61 being insufficient to maintain the operation of the cave-type data center, the DC power output by the battery is converted into AC power by the inverter and then delivered to the distribution box 102 to power the electrical equipment of the present invention, so as to ensure the continuous, safe and stable operation of the cave-type data center. Power is distributed through the distribution box 102 , and the distribution box 102 is electrically connected to various electrical equipment in the cave-type data center through the waterproof cable A14 . The middle part of the waterproof cable A14 can be installed on the pipeline layout hanger 31 .

[0040] A water retaining dam 6 is provided on the underground river 2 near the power tunnel 10, and the water retaining dam 6 is located in the karst cave 3, and the maximum water level of the water retaining dam 6 is lower than the elevation of the bottom surface of the equipment storage tunnel 4. The water retaining dam 6 is built on the underground river 2 to ensure that there is sufficient river water to exchange heat with the coolant in the liquid heat exchanger 8 all year round, further ensuring the cooling and heat dissipation effect of the coolant on the IT equipment cabinet 7. The maximum water level of the water retaining dam 6 is lower than the elevation of the bottom surface of the equipment storage tunnel 4, preventing the water of the underground river 2 from pouring into the equipment storage tunnel 4.

[0041] It also includes a hot wastewater discharge pipe 9, one end of which is connected to the outlet of the river water heat pipe 832, and the other end passes through the water retaining dam 6 and extends to the downstream of the water retaining dam 6, so as to discharge the hot river water to the downstream of the water retaining dam 6 through the hot wastewater discharge pipe 9, avoid discharging the hot river water to the reservoir area of ​​the water retaining dam 6, so that the water body in the reservoir area of ​​the water retaining dam 6 can continue to maintain a low temperature, further ensuring the heat exchange effect between the river water of the underground river 2 and the coolant in the liquid heat exchanger 8.

[0042] The water retaining dam 6 is provided with a hydroelectric generating device 61, and the cave 3 is provided with a plurality of pipeline layout hangers 31. The hydroelectric generating device 61 is electrically connected to the voltage conversion device 101 in the power tunnel 10 via a waterproof cable B15, and the middle part of the waterproof cable B15 is installed on the pipeline layout hanger 31. When in use, the hydroelectric generating device 61 includes a hydroelectric generating set and a step-up transformer, so that the power outputted by the hydroelectric generating set is stepped up by the step-up transformer, and the step-up transformer is connected to the voltage conversion device 101 and the external power grid line respectively via cables to realize power supply and transmission. In addition, as Figure 5 As shown, the voltage conversion device 101 is also electrically connected to the external power grid line. When the hydroelectric power generation equipment 61 fails or the power generation is insufficient, the external power grid line can be used to power the voltage conversion device 101, further ensuring that the cave-type data center can operate continuously, safely and stably.

[0043] When the water volume of the underground river 2 is significantly reduced and cannot maintain the water volume required for the operation of the hydroelectric power generation equipment 61, the water retaining dam 6 is only used to store water, and the hydroelectric power generation equipment 61 is no longer started to generate electricity. At this time, the cavern-type data center is powered by an external power grid line to ensure continuous, safe and stable operation of the cavern-type data center during the dry season.

[0044] The priority order of power supply for the cavernous data center is: power supply from the hydroelectric power generation equipment 61, power supply from the external power grid line, and power supply from the battery.

[0045] A construction method of a cave-type data center built based on an underground river, characterized in that it includes the following steps: Step 1: Select the mountain 1, underground river 2 and karst cave 3 where the cavernous data center is to be built, and build roads 11 and construction access roads on the outside of the selected mountain 1. When selecting, the underground river 2 should have relatively abundant water sources and the karst cave 3 should have a relatively large cross-section. In addition, the mountain 1 should not have major adverse geological bodies to ensure construction safety and controllable construction costs, and the size of the mountain 1 should be moderate to ensure that the equipment storage tunnel 4 is not too long or too short. The length of the equipment storage tunnel 4 should be controlled between 200m and 500m.

[0046] Step 2: Number the equipment storage tunnels 4 on both sides of the underground river 2 respectively, and use the odd-numbered sequence on one side of the underground river 2 and the even-numbered sequence on the other side of the underground river 2 as the first batch of equipment storage tunnels 4 to be constructed, and all the remaining equipment storage tunnels 4 as the second batch. The equipment storage tunnels 4 on both sides of the underground river 2 are constructed in two batches to reduce mutual interference between adjacent equipment storage tunnels 4 during construction, and at the same time help ensure that the mountain 1 and the cave 3 maintain structural stability.

[0047] Step 3: First construct the first batch of equipment storage tunnels 4, and after the construction length of the first batch of equipment storage tunnels 4 exceeds 50 meters, start constructing the second batch of equipment storage tunnels 4; The power tunnel 10 is constructed simultaneously with the first batch of equipment storage tunnels 4 until it is connected with the karst cave 3, and it is ensured that the bottom elevation of the power tunnel 10 is higher than the highest water level of the underground river 2; The construction direction of all equipment storage tunnels 4 and power tunnels 10 is gradually advancing from the road 11 side to the dark river 2 side. After the excavation length of the first batch of equipment storage tunnels 4 exceeds 50 meters, the second batch of equipment storage tunnels 4 will be excavated to reduce the mutual interference between the first batch of equipment storage tunnels 4 and the second batch of equipment storage tunnels 4 during the construction process, and at the same time help to ensure that the mountain 1 and the cave 3 maintain structural stability.

[0048] Step 4: After the first batch of equipment storage tunnels 4 are constructed to the designed length, continue to construct the slope connection tunnel 5 corresponding to the first batch of equipment storage tunnels 4.

[0049] Step 5: After the second batch of equipment storage tunnels 4 are constructed to the designed length, continue to construct the slope connecting tunnel 5 corresponding to the second batch of equipment storage tunnels 4.

[0050] Step six: After the construction of all slope connection tunnels 5 is completed, the construction suspension bridge 13 connects the equipment storage tunnels 4 on both sides of the underground river 2 one by one.

[0051] Step 7: Using the suspension bridge 13 as a working platform, clear the dangerous rocks on the inner wall of the cave 3, and then spray steel fiber shotcrete on the inner wall of the cave 3 to reinforce the inner wall of the cave 3.

[0052] Step 8: Use the power tunnel 10 as a material transportation channel to construct the water retaining dam 6. When constructing the water retaining dam 6, use the power tunnel 10 as a channel for concrete pumping and lifting and transporting construction materials such as steel bars.

[0053] Step nine: construct supporting buildings 12 and complete the installation and connection of equipment in the power tunnel 10, the water retaining dam 6, the slope connection tunnel 5 and the equipment storage tunnel 4.

[0054] When constructing the slope connection tunnel 5 in step 4 and step 5, the penetration time of the plurality of slope connection tunnels 5 and the karst cave 3 is staggered to ensure that the structure of the karst cave 3 remains stable.

[0055] A method for operating a cave-type data center built based on a dark river, characterized in that it includes the following steps: Step A, closing both ends of the equipment storage tunnel 4, and filling the equipment storage tunnel 4 with non-flammable gas; Step B, start the coolant circulation pump 813 to circulate the coolant in the jacket on the outer wall of the equipment cabinet 7, the coolant cold pipe 811, the coolant heat pipe 812 and the liquid heat exchanger 8; Step C, start the river water circulation pump 833, pump the river water in the underground river 2 to the liquid heat exchanger 8 for heat exchange with the coolant, and the coolant that has completed heat exchange in the liquid heat exchanger 8 flows back to the jacket on the outer wall of the equipment cabinet 7 to cool down and dissipate the heat of the equipment cabinet 7. The river water that has completed heat exchange in the liquid heat exchanger 8 is discharged into the underground river 2 downstream of the river water circulation pump 833 through the river water heat pipe 832.

[0056] After the non-combustible gas is filled into the equipment storage tunnel 4, the oxygen concentration inside it is lower than 15%. When in use, the minimum oxygen concentration for combustion of electrical equipment is 15%. The combustion of combustibles is an oxidation reaction, which requires an oxygen concentration above the minimum to proceed. When it is lower than 15%, combustion cannot be maintained and the fire is extinguished.

[0057] Therefore, nitrogen and other harmless and non-flammable gases are filled into the equipment storage tunnel 4, and the oxygen concentration in the equipment storage tunnel 4 is ensured to be lower than 15%, thereby avoiding fire in the equipment storage tunnel 4. There are usually fewer staff in the data center, and if they need to enter the equipment storage tunnel 4, they can enter after wearing oxygen supply equipment.

[0058] Embodiment 2: like Figure 6 As shown, when equipment storage tunnels 4 are provided on both sides of the underground river 2 and ventilation is required in the equipment storage tunnels 4, the wind direction in the equipment storage tunnel 4 on one side of the underground river 2 flows from the road 11 side to the cave 3 side, and the wind direction in the equipment storage tunnel 4 on the other side of the underground river 2 flows from the cave 3 side to the road 11 side. Axial flow fans can be installed on the top of the equipment storage tunnel 4 and the slope connection tunnel 5 to control the wind direction in the equipment storage tunnel 4 and achieve the purpose of ventilation in the equipment storage tunnel 4.

[0059] Embodiment three: like Figure 7 and Figure 8 As shown, the difference between the third embodiment and the first embodiment is that a plurality of equipment storage tunnels 4 are only provided on one side of the underground river 2, and there is no suspension bridge 13.

[0060] Embodiment 4: like Fig. 9 As shown, when multiple equipment storage tunnels 4 are set only on one side of the underground river 2, and the equipment storage tunnels 4 need to be ventilated, a part of the equipment storage tunnels 4 are used for air intake, and another part of the equipment storage tunnels 4 are used for exhaust. Axial flow fans can be installed on the top of the equipment storage tunnels 4 and the slope connection tunnel 5 to control the wind direction in the equipment storage tunnels 4 and achieve the purpose of ventilating the equipment storage tunnels 4.

Claims

1. A cave-type data center built on an underground river, characterized by: The invention comprises a mountain (1), wherein an underground river (2) is developed in the mountain (1), and the underground river (2) flows through a karst cave (3) in the mountain (1), and a plurality of equipment storage tunnels (4) are arranged on one side or both sides of the underground river (2) in the mountain (1), and the plurality of equipment storage tunnels (4) are connected to the karst cave (3) through slope connection tunnels (5), respectively, and the bottom elevation of the equipment storage tunnel (4) is higher than the highest water level of the underground river (2), and the upper surface of the slope connection tunnel (5) is higher than the upper surface elevation of the underground river (2). One end close to the cave (3) is inclined downward relative to the other end. An equipment cabinet (7) and a liquid heat exchanger (8) are arranged in the equipment storage tunnel (4). The liquid heat exchanger (8) is connected to the equipment cabinet (7) via a coolant delivery component (81). A river water delivery component (83) is connected to the liquid heat exchanger (8). An end of the river water delivery component (83) away from the liquid heat exchanger (8) passes through the slope connection tunnel (5) and extends into the underground river (2); The river water transport component (83) comprises a river water cooling pipe (831) and a river water heat pipe (832); one end of the river water cooling pipe (831) is connected to the water inlet of the liquid heat exchanger (8), and the other end extends into the underground river (2), and a river water circulation pump (833) is installed at this end; one end of the river water heat pipe (832) is connected to the water outlet of the liquid heat exchanger (8), and the other end extends to directly above the underground river (2) or into the underground river (2), and this end is located downstream of the river water circulation pump (833); The outer wall of the equipment cabinet (7) is provided with a jacket; The cooling liquid transport component (81) comprises a cooling liquid cooling pipe (811) and a cooling liquid heat pipe (812); the cooling liquid cooling pipe (811) and the cooling liquid heat pipe (812) are both connected to a jacket on the outer wall of the equipment cabinet (7) and a liquid heat exchanger (8); and a cooling liquid circulation pump (813) is provided on the cooling liquid cooling pipe (811).

2. The cavern-type data center built based on an underground river as claimed in claim 1, characterized in that: A steel fiber shotcrete layer is provided on the inner wall of the cave (3).

3. The cavern-type data center built based on an underground river as claimed in claim 1, characterized in that: A plurality of the equipment storage tunnels (4) are arranged side by side and laterally along the underground river (2).

4. The cavern-type data center built based on a dark river as claimed in claim 1, characterized in that: When equipment storage tunnels (4) are provided on both sides of the underground river (2) in the mountain (1), the equipment storage tunnel (4) on one side of the underground river (2) is connected to the equipment storage tunnel (4) on the other side of the underground river (2) in a one-to-one correspondence via a suspension bridge (13).

5. The cavern-type data center built based on an underground river as claimed in claim 1, characterized in that: A road (11) and supporting buildings (12) are provided on one or both sides of the underground river (2) outside the mountain (1); the road (11) is connected to the openings of all equipment storage tunnels (4) on the same side of the underground river (2); and the supporting buildings (12) are provided on one side of the road (11) and arranged close to the road (11).

6. The cavern-type data center built based on a dark river as claimed in claim 5 is characterized by: A power tunnel (10) is also provided in the mountain (1), and the bottom elevation of the power tunnel (10) is higher than the highest water level of the underground river (2). One end of the power tunnel (10) is connected to the cave (3), and the other end is connected to the road (11). A voltage conversion device (101), a distribution box (102) and a power storage device (103) are provided in the power tunnel (10), and the distribution box (102) and the power storage device (103) are both electrically connected to the voltage conversion device (101), and the distribution box (102) is electrically connected to the power storage device (103); The distribution box (102) is connected to a plurality of waterproof cables A (14), and one end of the waterproof cable A (14) away from the distribution box (102) extends into a power tunnel (10), a karst cave (3), a slope connection tunnel (5) or an equipment storage tunnel (4).

7. The cavern-type data center built based on a dark river as claimed in claim 6 is characterized by: A water retaining dam (6) is provided on the underground river (2) at a position close to the power tunnel (10), and the water retaining dam (6) is located in the karst cave (3). The maximum water storage level of the water retaining dam (6) is lower than the elevation of the bottom surface of the equipment storage tunnel (4).

8. The cavern-type data center built based on a dark river as claimed in claim 7 is characterized by: The water retaining dam (6) is provided with a hydroelectric generating device (61), and the karst cave (3) is provided with a plurality of pipeline layout hangers (31). The hydroelectric generating device (61) is electrically connected to a voltage conversion device (101) in the power tunnel (10) via a waterproof cable B (15), and the middle portion of the waterproof cable B (15) is mounted on the pipeline layout hanger (31).

9. A construction method for a cavernous data center built on an underground river as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Select a mountain (1), underground river (2) and karst cave (3) where a cave-type data center is to be built, and build a road (11) and a construction access road outside the selected mountain (1); Step 2: Number the equipment storage tunnels (4) on both sides of the underground river (2) respectively, and use the odd-numbered sequence on one side of the underground river (2) and the even-numbered sequence on the other side of the underground river (2) as the first batch of equipment storage tunnels (4) to be constructed, and use all the remaining equipment storage tunnels (4) as the second batch; Step 3: construct the first batch of equipment storage tunnels (4) first, and after the construction length of the first batch of equipment storage tunnels (4) exceeds 50 meters, start constructing the second batch of equipment storage tunnels (4); The power tunnel (10) is constructed simultaneously with the first batch of equipment storage tunnels (4) until it is connected to the karst cave (3), and it is ensured that the bottom elevation of the power tunnel (10) is higher than the highest water level of the underground river (2); The construction direction of all equipment storage tunnels (4) and power tunnels (10) is to gradually advance from the road (11) side to the underground river (2) side; Step 4: After the first batch of equipment storage tunnels (4) are constructed to the designed length, continue to construct the slope connection tunnel (5) corresponding to the first batch of equipment storage tunnels (4); Step 5: After the second batch of equipment storage tunnels (4) are constructed to the designed length, continue to construct the slope connection tunnel (5) corresponding to the second batch of equipment storage tunnels (4); Step 6: After all the slope connection tunnels (5) are constructed, a suspension bridge (13) is constructed to connect the equipment storage tunnels (4) on both sides of the underground river (2) one by one; Step 7: Using the suspension bridge (13) as a working platform, clear the dangerous rocks on the inner wall of the cave (3), and then spray steel fiber shotcrete on the inner wall of the cave (3) to reinforce the inner wall of the cave (3); Step 8: Using the power tunnel (10) as a material transportation channel, construct a water retaining dam (6); Step nine: construct supporting buildings (12), and complete the installation and connection of equipment in the power tunnel (10), the water retaining dam (6), the slope connection tunnel (5) and the equipment storage tunnel (4).

10. The construction method of a cavernous data center built based on an underground river as claimed in claim 9, characterized in that: When constructing the slope connection tunnel (5) in step 4 and step 5, the connection times of the plurality of slope connection tunnels (5) and the karst cave (3) are staggered.

11. An operating method of a cave-type data center built based on an underground river according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step A, closing both ends of the equipment storage tunnel (4), and filling the equipment storage tunnel (4) with non-flammable gas; Step B, starting the coolant circulation pump (813) to allow the coolant to circulate in the jacket on the outer wall of the equipment cabinet (7), the coolant cold pipe (811), the coolant heat pipe (812) and the liquid heat exchanger (8); Step C, start the river water circulation pump (833) to pump the river water in the underground river (2) to the liquid heat exchanger (8) for heat exchange with the coolant. The coolant in the liquid heat exchanger (8) that has completed the heat exchange flows back to the jacket on the outer wall of the equipment cabinet (7) to cool and dissipate the heat of the equipment cabinet (7). The river water in the liquid heat exchanger (8) that has completed the heat exchange is discharged into the underground river (2) downstream of the river water circulation pump (833) through the river water heat pipe (832).

12. The method for operating a cavernous data center built on a dark river as claimed in claim 11, characterized in that: After the equipment storage tunnel (4) is filled with non-flammable gas, the oxygen concentration inside is lower than 15%.

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