Super-deep concrete hierarchical root system type active heat dissipation and heat recovery system and regulation method

Abstract

This invention discloses a multi-stage root-based active heat dissipation and heat recovery system and its control method for ultra-deep concrete. The system includes a control module, a heat recovery module, and a multi-level topological pipe network. The pipe network comprises main pipelines, branch pipelines, and capillary pipelines connected sequentially. The control module includes a temperature sensor group, a fluid flow meter group, a flow control valve group, and a controller. The temperature sensor group detects the temperature of the concrete in the external environment and the corresponding heat dissipation areas of each pipe network node within the poured concrete. The fluid flow meter group detects the fluid flow rate at each pipe network node. The flow control valve group controls the fluid flow rate at each pipe network node. The controller collects the detection signals from the temperature sensor group and the fluid flow meter group in real time, predicts the concrete temperature changes in the corresponding heat dissipation areas of each pipe network node, dynamically calculates and allocates the fluid flow rate at each pipe network node, and outputs signals to control the operation of the flow control valve group. This invention improves the quality of concrete construction and achieves energy saving and consumption reduction.

Description

Technical Field

[0001] This invention relates to the field of concrete construction technology, and in particular to an ultra-deep concrete graded root system-based active heat dissipation and heat recovery system and its control method. Background Technology

[0002] Currently, in the construction of ultra-deep, large-volume concrete structures (such as ultra-thick foundation slabs, diaphragm walls, and deep pile foundations), the large amount of heat generated by the cement hydration reaction easily accumulates inside the concrete, creating a significant temperature difference between the inside and outside. This leads to temperature stress cracks, severely affecting the durability and safety of the structure. Existing temperature control technologies mostly rely on pre-embedded cooling water pipes for heat dissipation. These pipes are typically arranged in regular, symmetrical straight lines or rings. However, this arrangement is difficult to fully match the non-uniform, dynamically changing temperature field actually formed inside the concrete. Especially in complex structures with great depth, it easily leads to heat dissipation blind spots and uneven cooling. In addition, most existing technologies focus solely on "removing heat as quickly as possible," directly discharging cooling water containing a large amount of low-grade heat energy (heat of hydration), resulting in huge energy waste. At the same time, traditional control methods are mostly based on a passive response mode with fixed thresholds, resulting in delayed response and limited control precision, which cannot meet the growing demands of modern green and intelligent construction for energy conservation, emission reduction, and refined control. Summary of the Invention

[0003] This invention provides an ultra-deep concrete graded root system-based active heat dissipation and heat recovery system and control method to solve the technical problems existing in the prior art.

[0004] The technical solution adopted by this invention to solve the technical problems existing in the prior art is as follows:

[0005] A multi-level root-type active heat dissipation and heat recovery system for ultra-deep concrete includes: a control module, a heat recovery module, and a multi-level topological pipe network located in the poured concrete to dissipate the heat of hydration reaction of the concrete, forming a tree-like hierarchical structure; the pipe network includes main pipes, branch pipes, and capillary pipes connected in sequence; the main pipes are vertically installed in the poured concrete; the branch pipes are laterally branched from the main pipes and extend horizontally or obliquely; the capillary pipes are radial pipes further branched from the branch pipes; the control module includes a temperature sensor group, a fluid flow meter group, a flow control valve group, a flow direction control valve group, and a controller; The temperature sensor group is used to detect the temperature of the concrete in the external environment and the corresponding heat dissipation area of ​​each pipe network node inside the poured concrete; the fluid flow meter group is used to detect the fluid flow rate of each pipe network node; the flow control valve group is used to control the fluid flow rate of each pipe network node; the flow direction control valve group is used to control the fluid entering and leaving the pipe network, the flow direction entering and leaving the pipe network, and the flow direction after leaving the pipe network; the controller is used to collect the detection signals of the temperature sensor group and the fluid flow meter group in real time, predict the concrete temperature change of the corresponding heat dissipation area of ​​each pipe network node, dynamically calculate and distribute the fluid flow rate of each pipe network node, and output signals to control the operation of the flow control valve group and the flow direction control valve group.

[0006] Furthermore, the controller includes a prediction model for predicting the concrete temperature of the heat dissipation area corresponding to each pipe network node and an optimization model for optimizing the pipe network flow control strategy. The prediction model is built based on a neural network model, which predicts the concrete temperature of the heat dissipation area corresponding to each pipe network node based on the current and historical concrete temperature and fluid flow data of each pipe network node. The optimization model optimizes the allocation of fluid flow for heat transfer at each pipe network node based on the real-time detection data and prediction data of the concrete temperature and fluid flow of the heat dissipation area corresponding to each pipe network node.

[0007] Furthermore, the neural network model is constructed from one or more of the following neural networks: Long Short-Term Memory Network, Gated Recurrent Unit, Convolutional Neural Network, Attention Mechanism Network.

[0008] Furthermore, the optimization model is constructed from one or more of the following algorithmic models: genetic algorithm model, particle swarm optimization algorithm model, simulated annealing algorithm model, and ant colony optimization algorithm model.

[0009] Furthermore, the system also includes a visualization module, which displays the topology of the pipe network, the concrete temperature of the heat dissipation area corresponding to each pipe network node, the fluid flow rate of each pipe network node, and the status parameters of the pipe flow valve. It has a built-in digital twin model, which is used to simulate the topology of the pipe network, the concrete temperature of the heat dissipation area corresponding to each pipe network node, the fluid velocity of each pipe network node, and the opening of the pipe flow valve. The digital twin model is driven by data from the control module, and simulates scene changes and data display in real time.

[0010] Furthermore, the system also includes a backwash input pipeline and a backwash output pipeline. One end of the backwash input pipeline is connected to the flushing fluid supply port through a first backwash solenoid valve, and the other end is connected to the return pipeline. One end of the backwash output pipeline is connected to the input port of the main pipeline through a second backwash solenoid valve, and the other end is connected to the flushing fluid recovery device. The controller is equipped with a backwashing module, which is automatically or manually activated periodically. The backwashing module outputs a signal to activate the first and second backwashing solenoid valves and the flow control valves at each pipeline node. This allows the fluid to flow in from the backwashing input pipeline, then sequentially through the return pipeline and the main pipeline, and finally out from the backwashing output pipeline, thus completing the backwashing process.

[0011] Furthermore, the system also includes a slurry input pipeline and a network venting pipeline. The slurry input pipeline is connected to the main pipeline; the network venting pipeline is connected to the return pipeline; a slurry control valve is installed on the slurry input pipeline, and an venting valve is installed on the network venting pipeline; when the concrete temperature control target is achieved and pipeline sealing is required, the controller outputs a signal to control the opening of the slurry control valve, allowing slurry to be injected into the network; when the slurry is injected into the network, the control module outputs a signal to control the opening of the venting valve, allowing gas in the network to be discharged.

[0012] This invention also provides a method for regulating the graded root-based active heat dissipation and heat recovery of ultra-deep concrete using the above-mentioned ultra-deep concrete graded root-based active heat dissipation and heat recovery system. The method includes the following steps: Lay out main pipelines, branch pipelines and capillary pipelines and connect them to form a topological network; Concrete pouring is carried out. After the concrete pouring is completed, the control module and the circulation pump of the pipeline network are started to introduce fluid. The controller collects the detection signals from the temperature sensor group and the fluid flow meter group in real time, predicts the concrete temperature change of the heat dissipation area corresponding to each pipeline node, and starts different working modes according to different working conditions. According to different working modes, it dynamically calculates and distributes the flow rate of the fluid at each pipeline node, and outputs signals to control the operation of the flow control valve group and the flow direction control valve group. Set the working mode to the following two modes: heat dissipation and heat recovery mode and heat preservation and slow release mode; set the heat dissipation recovery temperature threshold range and the heat preservation and slow release temperature threshold. When the temperature in the core area of ​​the concrete pouring is greater than or equal to the lower limit of the heat dissipation and recovery temperature threshold range, the controller operates in heat dissipation and heat recovery mode, causing the opening of the flow control valve of the pipeline node to rise and fall with the temperature of the concrete in its corresponding area; when the temperature in the core area of ​​the concrete pouring exceeds the upper limit of the heat dissipation and recovery temperature threshold range, the flow control valve of all pipeline nodes is opened to the maximum; the fluid carrying heat energy flows through the heat exchanger, and the heat carried by the fluid is transferred to the heat absorption medium in the heat exchanger, storing the heat energy or directly delivering the heat energy to the demand unit. When the temperature in the core area of ​​the concrete pouring is less than the lower limit of the heat dissipation recovery temperature threshold range, or when the temperature difference between the concrete interior and the ambient temperature is less than or equal to the heat preservation and slow release temperature threshold, the controller operates in heat preservation and slow release mode, reduces the fluid flow rate, or provides auxiliary heat preservation to the surface area to control thermal stress.

[0013] Furthermore, the system is also equipped with a backwash input pipeline and a backwash output pipeline. One end of the backwash input pipeline is connected to the flushing fluid supply port through the first backwash solenoid valve, and the other end is connected to the return pipeline. One end of the backwash output pipeline is connected to the input port of the main pipeline through the second backwash solenoid valve, and the other end is connected to the flushing fluid recovery device. The controller is equipped with a backwashing module, which is automatically or manually activated periodically. The backwashing module outputs a signal to activate the first and second backwashing solenoid valves and the flow control valves at each pipeline node. This allows the fluid to flow in from the backwashing input pipeline, then sequentially through the return pipeline and the main pipeline, and finally out from the backwashing output pipeline, thus completing the backwashing process.

[0014] Furthermore, in situations where grouting and sealing of heat dissipation pipes are required to achieve the concrete temperature control target, the system is also equipped with a grout input pipe and a pipe network venting pipe. The grout input pipe is connected to the main pipe; the pipe network venting pipe is connected to the return pipe; a grout control valve is installed on the grout input pipe, and an venting valve is installed on the pipe network venting pipe; when pipe sealing is required after the concrete temperature control target is achieved, the control module outputs a signal to control the opening of the grout control valve, allowing grout to be injected into the pipe network; while the grout is being injected into the pipe network, the control module outputs a signal to control the opening of the venting valve, allowing gas in the pipe network to be discharged. Once the concrete temperature control target is achieved, the fluid in the topology network is extracted, and clean water is introduced to circulate and flush the network to remove sediment and impurities. Compressed air is then introduced into the network to expel any remaining liquid media. Circulating slurry, prepared using micro-expansion cement grout, is injected through a pressure grouting machine from the pre-set injection ports of the network system. The circulation mode is activated, allowing the slurry to continuously circulate within the closed network. During slurry circulation, the exhaust device is continuously or intermittently activated to completely expel any trapped air from the pipes until the exhaust pipe continuously discharges full, bubble-free slurry. After exhausting, circulation is stopped, and a pressure-stabilized grouting mode is entered, maintaining a certain pressure for a period to ensure the slurry completely fills every gap in the network. All inlets and outlets are then sealed, allowing the network to cure under static pressure. For port sealing and surface treatment: once the sealing slurry reaches the design strength, exposed pipe joints and exhaust pipes are cut off and smoothed with cement mortar of the same strength grade as the structure, ensuring the temporary temperature control system is permanently and seamlessly integrated into the concrete structure.

[0015] The advantages and positive effects of this invention are: This invention discloses an ultra-deep concrete graded root-type active heat dissipation and heat recovery system. During system maintenance and optimization, the graded root-type pipe network layout alters the symmetrical approach of traditional regular pipe networks. Its asymmetrical, three-dimensional bifurcated structure naturally conforms to the non-uniform temperature field formed within the concrete, achieving gradient and refined heat dissipation from the core high-temperature zone to the edge areas. This fundamentally eliminates heat dissipation blind spots, avoids localized heat accumulation, and significantly reduces the risk of temperature cracks. The dense distribution of the capillary root network increases the contact area between the heat dissipation pipes and the concrete, thereby significantly improving the overall heat exchange efficiency.

[0016] During system maintenance and cyclic optimization: Active control is adopted, which can predict thermal trends based on real-time temperature gradients and adjust cooling strategies in advance, resulting in more timely and precise control. The system has multiple operating modes that can automatically switch according to the heat of hydration release pattern. It can cope with intense heat release peaks and precisely control temperature differences during the cooling phase, achieving temperature control throughout the entire life cycle. This maximizes crack resistance while ensuring the development of concrete strength.

[0017] System maintenance and iterative optimization phase: The heat of hydration directly emitted in traditional processes is treated as a resource for recycling and reuse. The recovered heat energy can be used for heating, maintenance, etc., reducing the procurement cost of external energy, which has good economic efficiency and increases economic benefits.

[0018] This invention integrates a biomimetic "hierarchical root-like" heat dissipation pipe network with a "root water absorption" intelligent algorithm, enabling the transformation of ultra-deep concrete hydration heat from passive response to active and precise control. It not only completely solves the industry problems of uneven heat dissipation and easy cracking caused by traditional methods through three-dimensional adaptive heat dissipation, but also innovatively recycles and utilizes waste hydration heat, turning waste into treasure. While ensuring the quality and long-term durability of concrete construction, it achieves energy saving, consumption reduction and green construction, providing a comprehensive solution for the entire life cycle safety and economy of major infrastructure projects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the medium flow direction in the cooling stage of an ultra-deep concrete graded root-based active heat dissipation and heat recovery system according to the present invention. The arrows in the diagram indicate the direction of medium flow within the pipeline.

[0020] Figure 2 This is a schematic diagram of the medium flow direction during the backflushing stage of an ultra-deep concrete graded root-based active heat dissipation and heat recovery system according to the present invention. The arrows in the diagram indicate the direction of medium flow within the pipeline.

[0021] Figure 3 This is a cross-sectional view of a multi-level topology pipeline network laid out in an ultra-deep underground continuous wall according to the present invention.

[0022] Figure 4 This is a schematic diagram showing the relationship between the spacing of the main pipelines laid within an ultra-deep underground continuous wall and the temperature control diameter. The area enclosed by the dashed line in the diagram is the range of the temperature control diameter of the main pipelines, and h is the spacing between adjacent main pipelines laid within the ultra-deep concrete pouring wall.

[0023] Figure 5 This is a flowchart of the working process of a graded root system-based active heat dissipation and heat recovery control method for ultra-deep concrete according to the present invention.

[0024] In the diagram: 1. Main pipeline; 2. Combination device of flow control valve and fluid flow meter; 3. Branch pipeline; 4. Capillary pipeline; 5. Return pipeline; 6. Diaphragm wall. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] In the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; or an electrical connection or signal transmission. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] Please see Figures 1 to 5 A multi-level root-type active heat dissipation and heat recovery system for ultra-deep concrete is disclosed. The system includes: a control module, a heat recovery module, and a multi-level topological pipe network located in the poured concrete for dissipating the heat of concrete hydration reaction, which has a tree-like hierarchical structure. The pipe network includes a main pipe 1, branch pipes 3, and capillary pipes 4 connected in sequence. The main pipe 1 is vertically installed in the poured concrete. The branch pipes 3 are pipes that branch laterally from the main pipe 1 and extend horizontally or obliquely. The capillary pipes 4 are radial pipes that further branch from the branch pipes 3.

[0028] The control module includes a temperature sensor group, a fluid flow meter group, a flow control valve group, a flow direction control valve group, and a controller. The temperature sensor group is used to detect the temperature of the concrete in the external environment and the corresponding heat dissipation area of ​​each pipe network node inside the poured concrete. The fluid flow meter group is used to detect the fluid flow rate of each pipe network node. The flow control valve group is used to control the fluid flow rate of each pipe network node. The flow direction control valve group is used to control the fluid entering and leaving the pipe network, the flow direction entering and leaving the pipe network, and the flow direction after leaving the pipe network. The controller is used to collect the detection signals of the temperature sensor group and the fluid flow meter group in real time, predict the concrete temperature change of the corresponding heat dissipation area of ​​each pipe network node, dynamically calculate and allocate the fluid flow rate of each pipe network node, and output signals to control the operation of the flow control valve group and the flow direction control valve group.

[0029] Main pipeline 1 can serve as a primary pipeline channel, extending vertically from the central pipeline into the core hot zone of the cast body; branch pipeline 3 can serve as a secondary pipeline channel, branching laterally from main pipeline 1 and extending horizontally or obliquely; capillary pipeline 4 can serve as a tertiary or lower-level pipeline channel, further branching from branch pipeline 3 to form a radial pipeline structure.

[0030] The temperature sensor group includes several temperature sensors; the fluid flow meter group includes several fluid flow meters; the flow control valve group includes several flow control valves; the flow direction control valve group includes several flow direction control valves, which can be check valves or solenoid valves.

[0031] The flow control valve and the fluid flow meter can be combined to form a combined device 2 of flow control valve and fluid flow meter.

[0032] The inlet of each main pipeline 1 can be used as a network node. Fluid flow meters and flow control valves, or a combination device 2 of flow control valves and fluid flow meters, can be installed at the inlet of each main pipeline 1.

[0033] Preferably, the controller may include a prediction model for predicting the concrete temperature of the heat dissipation area corresponding to each pipe network node and an optimization model for optimizing the pipe network flow control strategy. The prediction model may be constructed based on a neural network model, which predicts the concrete temperature of the heat dissipation area corresponding to each pipe network node based on the current and historical concrete temperature and fluid flow data of each pipe network node. The optimization model may optimize the allocation of fluid flow for heat transfer at each pipe network node based on the real-time detection data and prediction data of the concrete temperature and fluid flow of the heat dissipation area corresponding to each pipe network node.

[0034] Preferably, the neural network model can be constructed from one or more of the following neural networks: long short-term memory network, gated recurrent unit, convolutional neural network, attention mechanism network.

[0035] Preferably, the optimization model can be constructed from one or more of the following algorithm models: genetic algorithm model, particle swarm algorithm model, simulated annealing algorithm model, and ant colony algorithm model.

[0036] Genetic algorithm model: simulates the biological evolution process and is suitable for complex nonlinear optimization.

[0037] Particle swarm optimization model: simulates the foraging behavior of bird flocks and is used for continuous optimization problems.

[0038] Simulated annealing algorithm model: Based on the principle of physical annealing, it avoids getting trapped in local optima.

[0039] Ant colony algorithm model: simulates the pheromone mechanism of ants and is suitable for combinatorial optimization.

[0040] Preferably, the system may also include a visualization module, which can be used to display the topology network structure, the concrete temperature of the heat dissipation area corresponding to each network node, the fluid flow rate of each network node, and the status parameters of the pipeline flow valve. It may have a built-in digital twin model, which is used to simulate the topology network structure, the concrete temperature of the heat dissipation area corresponding to each network node, the fluid velocity of each network node, and the opening of the pipeline flow valve. The digital twin model is driven by data from the control module to simulate scene changes and data display in real time.

[0041] Preferably, the system may further include a backwash input pipeline and a backwash output pipeline. One end of the backwash input pipeline is connected to the flushing fluid supply port through a first backwash solenoid valve, and the other end is connected to the return pipeline 5. One end of the backwash output pipeline is connected to the input port of the main pipeline 1 through a second backwash solenoid valve, and the other end is connected to the flushing fluid recovery device. The controller may be equipped with a backwashing module, which can be automatically or manually activated periodically. The backwashing module outputs a signal to activate the first and second backwashing solenoid valves and the flow control valves of each pipeline node, so that the fluid flows in from the backwashing input pipeline, then flows through the return pipeline 5 and the main pipeline 1 in sequence, and then flows out from the backwashing output pipeline to complete the backwashing.

[0042] Preferably, the system may further include a slurry input pipeline and a pipeline venting pipeline. The slurry input pipeline is connected to the main pipeline 1; the pipeline venting pipeline is connected to the return pipeline 5; a slurry control valve is provided on the slurry input pipeline, and an venting valve is provided on the pipeline venting pipeline; when the concrete temperature control target is achieved and pipeline sealing is required, the controller outputs a signal to control the opening of the slurry control valve, allowing slurry to be injected into the pipeline; when the slurry is injected into the pipeline, the control module outputs a signal to control the opening of the venting valve, allowing gas in the pipeline to be discharged.

[0043] This invention also provides a method for regulating the graded root-based active heat dissipation and heat recovery of ultra-deep concrete using the above-mentioned ultra-deep concrete graded root-based active heat dissipation and heat recovery system. The method includes the following steps: Lay out main pipeline 1, branch pipeline 3 and capillary pipeline 4 and connect them to form a topological network; Concrete pouring is carried out. After the concrete pouring is completed, the control module and the circulation pump of the pipeline network are started to introduce fluid. The controller collects the detection signals from the temperature sensor group and the fluid flow meter group in real time, predicts the concrete temperature change of the heat dissipation area corresponding to each pipeline node, and starts different working modes according to different working conditions. According to different working modes, it dynamically calculates and distributes the flow rate of the fluid at each pipeline node, and outputs signals to control the operation of the flow control valve group and the flow direction control valve group. Set the working mode to the following two modes: heat dissipation and heat recovery mode and heat preservation and slow release mode; set the heat dissipation recovery temperature threshold range and the heat preservation and slow release temperature threshold. When the temperature in the core area of ​​the concrete pouring is greater than or equal to the lower limit of the heat dissipation and recovery temperature threshold range, the controller operates in heat dissipation and heat recovery mode, causing the opening of the flow control valve of the pipeline node to rise and fall with the temperature of the concrete in its corresponding area; when the temperature in the core area of ​​the concrete pouring exceeds the upper limit of the heat dissipation and recovery temperature threshold range, the flow control valve of all pipeline nodes is opened to the maximum; the fluid carrying heat energy flows through the heat exchanger, and the heat carried by the fluid is transferred to the heat absorption medium in the heat exchanger, storing the heat energy or directly delivering the heat energy to the demand unit. When the temperature in the core area of ​​the concrete pouring is less than the lower limit of the heat dissipation recovery temperature threshold range, or when the temperature difference between the concrete interior and the ambient temperature is less than or equal to the heat preservation and slow release temperature threshold, the controller operates in heat preservation and slow release mode, reduces the fluid flow rate, or provides auxiliary heat preservation to the surface area to control thermal stress.

[0044] Preferably, the system may also be provided with a backwash input pipeline and a backwash output pipeline. One end of the backwash input pipeline is connected to the flushing fluid supply port through the first backwash solenoid valve, and the other end is connected to the return pipeline 5. One end of the backwash output pipeline is connected to the input port of the main pipeline 1 through the second backwash solenoid valve, and the other end is connected to the flushing fluid recovery device. The controller can be set with a backwash module, which can be started automatically or manually at regular intervals. The backwash module outputs a signal to start the first and second backwash solenoid valves and the flow control valves of each pipeline node; so that the fluid flows in from the backwash input pipeline, then flows through the return pipeline 5 and the main pipeline 1 in sequence, and then flows out from the backwash output pipeline to complete the backwash.

[0045] Preferably, in situations where grouting and sealing of heat dissipation pipes are required to achieve the concrete temperature control target, the system can also be equipped with a grout inlet pipe and a network vent pipe. The grout inlet pipe is connected to the main pipeline 1; the network vent pipe is connected to the return pipeline 5; a grout control valve is installed on the grout inlet pipe, and an vent valve is installed on the network vent pipe; when the pipeline needs to be sealed after the concrete temperature control target is achieved, the control module outputs a signal to control the opening of the grout control valve, allowing grout to be injected into the network; when the grout is injected into the network, the control module outputs a signal to control the opening of the vent valve, allowing gas in the network to be discharged. Once the concrete temperature control target is achieved, the fluid in the topology network is extracted, and clean water is introduced to circulate and flush the network to remove sediment and impurities. Compressed air is then introduced into the network to expel any remaining liquid media. Circulating slurry, prepared using micro-expansion cement grout, is injected through a pressure grouting machine from the pre-set injection ports of the network system. The circulation mode is activated, allowing the slurry to continuously circulate within the closed network. During slurry circulation, the exhaust device is continuously or intermittently activated to completely expel any trapped air from the pipes until the exhaust pipe continuously discharges full, bubble-free slurry. After exhausting, circulation is stopped, and a pressure-stabilized grouting mode is entered, maintaining a certain pressure for a period to ensure the slurry completely fills every gap in the network. All inlets and outlets are then sealed, allowing the network to cure under static pressure. For port sealing and surface treatment: once the sealing slurry reaches the design strength, exposed pipe joints and exhaust pipes are cut off and smoothed with cement mortar of the same strength grade as the structure, ensuring the temporary temperature control system is permanently and seamlessly integrated into the concrete structure.

[0046] The structure, workflow, and working principle of the present invention are further illustrated below with reference to a preferred embodiment: A multi-stage root-based active heat dissipation and heat recovery system for ultra-deep concrete is characterized by comprising: a control module, a heat recovery module, and a multi-stage topological pipe network located in the poured concrete for dissipating the heat of hydration reaction of the concrete; the pipe network includes a main pipe 1, branch pipes 3, and capillary pipes 4 connected in sequence; the main pipe 1 serves as a primary pipe network channel, extending vertically from the central pipe into the core hot zone of the poured body; the branch pipes 3 serve as secondary pipe network channels, branching laterally from the main pipe 1 and extending horizontally or obliquely; the capillary pipes 4 serve as tertiary pipe network channels, further branching from the branch pipes 3 to form a radial pipe structure, with the ends of the capillary pipes 4 sealed; the heat recovery module includes: a heat exchanger, a heat storage device, and / or a heat export device; the heat exchanger is used to absorb heat energy from the pipe network, the heat storage device is used to store heat energy, and the heat export device is used to export heat energy to external equipment.

[0047] The control module includes a temperature sensor group, a fluid flow meter group, a flow control valve group, a flow direction control valve group, and a controller. The temperature sensor group is used to detect the temperature of the concrete in the external environment and the corresponding heat dissipation area of ​​each pipe network node inside the poured concrete. The fluid flow meter group is used to detect the fluid flow rate of each pipe network node. The flow control valve group is used to control the fluid flow rate of each pipe network node. The flow direction control valve group is used to control the fluid entering and leaving the pipe network, the flow direction entering and leaving the pipe network, and the flow direction after leaving the pipe network. The controller is used to collect the detection signals of the temperature sensor group and the fluid flow meter group in real time, predict the concrete temperature change of the corresponding heat dissipation area of ​​each pipe network node, dynamically calculate and allocate the fluid flow rate of each pipe network node, and output signals to control the operation of the flow control valve group and the flow direction control valve group.

[0048] The system consists of a three-tiered structure: a main pipeline 1, branch pipelines 3, and capillary channels 4. The main pipeline 1 serves as the primary channel, extending vertically from a high-strength central pipe into the core hot zone of the cast concrete. Branch pipelines 3 serve as secondary channels, branching laterally from the main pipeline 1 and extending horizontally or diagonally. Capillary channels 4 serve as tertiary and lower-level channels, further branching from branch pipelines 3 into a dense, flexible network of pipes, each equipped with a micro-diffuser to ensure heat dissipation reaches every corner. This biomimetic structure breaks the limitations of traditional regular pipe networks, adaptively matching the complex temperature field inside the concrete to achieve three-dimensional, gradient heat dissipation from the core to the surface, significantly improving heat dissipation uniformity and efficiency.

[0049] The system mimics the morphology and function of plant root systems in nature. Plant roots efficiently and adaptively absorb water and nutrients from the soil through a hierarchical structure of taproots, lateral roots, and capillary roots. This invention applies this principle to a heat dissipation pipe network structure. The "main root pipe," or trunk pipe 1, penetrates deep into the core hot zone of the concrete, serving as the main energy transmission artery; the "lateral root pipe," or branch pipe 3, extends outwards to the surrounding area, forming secondary heat dissipation channels; and the "capillary root pipe," or capillary pipe 4, branches out intricately, penetrating into various micro-regions. This asymmetric, hierarchical diffusion biomimetic structure naturally matches the non-uniform temperature field formed by the generation and transfer of hydration heat within the concrete, achieving three-dimensional and uniform heat dissipation from the inside out and from primary to secondary roots, fundamentally overcoming the heat dissipation dead zones and uneven cooling problems present in traditional regular pipe networks.

[0050] This system constructs a sensing network by distributing temperature and flow sensors at key nodes in each level of the pipeline. The control module incorporates a built-in control algorithm that dynamically calculates and intelligently allocates the flow rate and velocity of the cooling medium in each branch based on the real-time sensed temperature gradient, achieving a shift from passive response to proactive prediction. The system features multiple operating modes, including full-power heat dissipation, heat preservation and slow release, and heat recovery, which can be automatically switched and precisely controlled according to the heat release pattern of concrete hydration and environmental conditions.

[0051] The control module employs active predictive control based on real-time data. Its core is a biomimetic algorithm that mimics the "root water absorption" mechanism, where plant roots autonomously adjust their water absorption rate according to soil moisture gradients. The system uses a distributed sensor network to sense the temperature (i.e., the "thermal gradient") at different locations within the concrete in real time. Based on this data, the control module dynamically calculates and prioritizes the allocation of cooling media (such as water) to the hottest "hot spots" (increasing the water flow rate and lowering the initial temperature of the medium), achieving precise targeted cooling. The system possesses multi-mode control capabilities, autonomously switching between modes such as "heat dissipation and heat recovery mode" and "heat preservation and slow release mode" based on the heat of hydration release pattern, ensuring efficient temperature control while preventing the formation of temperature stress cracks.

[0052] This invention treats the heat of hydration in concrete as a recyclable, low-grade energy source, rather than purely "waste heat." The system effectively extracts the heat carried from the concrete by the circulating medium through a heat exchanger and stores it in a heat storage device. This recovered heat energy can be converted into useful energy for construction site heating, precast component curing, and domestic hot water, thus achieving a closed-loop energy system of "extracting heat from concrete to power the construction process." This principle transforms the traditional, one-way "consumptive heat dissipation" process into an active, energy-efficient "heat recovery and utilization" process, aligning with the core requirements of green construction and sustainable development.

[0053] A method for regulating ultra-deep concrete graded root-based active heat dissipation and heat recovery using the aforementioned ultra-deep concrete graded root-based active heat dissipation and heat recovery system comprises the following steps: (1) System deployment and startup phase: Before concrete pouring, based on the structural design and temperature control simulation calculations, a graded root-type heat dissipation pipe network is pre-tied and installed (it can be connected according to the steel cage structure or pre-embedded using this simple fixing frame). The main pipe 1 is vertically positioned in the core high-temperature zone, and the branch pipes 3 and capillary pipes 4 are connected and fixed according to the design gradient. After pouring is completed, the circulating water pump and control module are started to introduce the cooling medium.

[0054] (2) Data perception and pattern decision-making stage: After system startup, temperature sensor groups and fluid flow meter groups deployed in pipelines at all levels continuously collect temperature data inside the concrete and flow data at pipeline nodes, transmitting this data to the controller in real time. The controller analyzes and processes the data and establishes a visualization module, which plots a temperature field cloud map inside the structure in real time. Based on preset thresholds and prediction models, the system automatically determines and activates the most suitable operating mode. When the temperature in the core area of ​​the concrete pouring is greater than or equal to the lower limit of the heat dissipation and recovery temperature threshold range, the controller operates in heat dissipation and heat recovery mode, causing the opening of the flow control valve of the pipeline node to rise and fall with the temperature of the concrete in its corresponding area; when the temperature in the core area of ​​the concrete pouring exceeds the upper limit of the heat dissipation and recovery temperature threshold range, the flow control valve of all pipeline nodes is opened to the maximum; the fluid carrying heat energy flows through the heat exchanger, and the heat carried by the fluid is transferred to the heat absorption medium in the heat exchanger, storing the heat energy or directly delivering the heat energy to the demand unit. When the temperature in the core area of ​​the concrete pouring is less than the lower limit of the heat dissipation recovery temperature threshold range, or when the temperature difference between the concrete interior and the ambient temperature is less than or equal to the heat preservation and slow release temperature threshold, the controller operates in heat preservation and slow release mode, reduces the fluid flow rate, or provides auxiliary heat preservation to the surface area to control thermal stress.

[0055] When the recovered heat energy has utilization value and the heat dissipation demand is not high, the operation intensity of the heat recovery mode should be increased.

[0056] (3) Active regulation and heat dissipation execution phase: In the selected mode, the algorithm dynamically calculates and sends commands to the downstream intelligent flow control valves based on the real-time temperature gradient, precisely controlling the flow rate and velocity of the medium flowing into each branch pipe 3 and capillary pipe 4. For example, for detected high-temperature areas, the system automatically increases the opening of the flow control valve in that branch, achieving "precise targeting" enhanced heat dissipation. The entire process is a continuous "perception-decision-execution" closed loop, ensuring that the heat dissipation behavior is coordinated with the actual thermal state inside the concrete.

[0057] (4) Heat energy recovery and reuse stage: While dissipating heat, the warm medium carrying the heat of hydration flows through a plate heat exchanger, transferring its heat to a separate clean water loop or phase change thermal storage material. The recovered heat energy is temporarily stored or directly transferred to the energy-consuming unit. This process runs parallel to the heat dissipation process, together forming a complete closed-loop energy flow. The system can intelligently decide on the allocation of heat energy; for example, storing heat energy at night and using it for heating the maintenance shed during the day, maximizing energy utilization efficiency.

[0058] (5) System maintenance and iterative optimization phase: The system has a built-in backflushing program that can be activated periodically or as needed to prevent pipe blockage due to impurities and ensure long-term operational reliability. Simultaneously, the control system records historical operating data and continuously optimizes algorithm parameters through machine learning, enabling the system to possess self-learning and self-optimization capabilities in subsequent engineering applications.

[0059] (6) Blocking phase: Once the concrete temperature control target is achieved, the system enters the final post-processing and sealing procedure. This stage is crucial for ensuring a permanent and safe bond between the heat dissipation system and the concrete structure. The specific steps are as follows: System Cleaning and Media Discharge: The temperature control mode is stopped. First, clean water is used to circulate and flush the inside of the pipeline network to remove sediment and impurities. Then, compressed air and a pumping system are used to discharge as much residual liquid water as possible from the pipeline network. Circulating Grouting and Dynamic Venting: Circulating grout prepared with a special micro-expansion cement grouting material is injected into the pipeline system through a pressure grouting machine from the preset grouting ports. The circulation mode is activated, allowing the grout to continuously circulate within the closed pipeline system. This process helps remove any remaining air and moisture from the pipes, ensuring the uniformity and density of the grout. During grout circulation, the vent valve is continuously or intermittently opened to completely expel any air trapped in the pipes until the vent pipe continuously flows out full, bubble-free grout. Pressure Stabilization and Curing: After venting is complete, circulation is stopped, and the system switches to pressure stabilization grouting mode. A certain pressure is maintained for a period of time to ensure the grout completely fills every gap in the pipeline. Then, all inlets and outlets are closed, allowing the pipeline system to cure under static pressure. Port sealing and surface treatment: After the sealing grout reaches the design strength, the exposed pipe joints and vent pipes are cut off, and the surface is smoothed and repaired with cement mortar of the same strength grade as the structure, so that the temporary temperature control system is permanently and seamlessly integrated into the concrete structure, eliminating any potential water seepage channels and enhancing the local integrity of the structure.

[0060] This invention achieves the recovery and reuse of thermal energy. The system efficiently extracts the heat of hydration carried by the circulating medium water from the concrete through devices such as plate heat exchangers. The collected thermal energy can be stored in a heat storage device and flexibly applied to construction site heating, precast component curing, domestic hot water supply, or as an auxiliary heat source for ground source heat pumps, thereby transforming traditionally considered "waste heat" into valuable resources and achieving energy conservation and consumption reduction during the construction process.

[0061] This invention effectively solves the problems of uneven heat dissipation, energy waste, and insufficient control precision in ultra-deep concrete structures by combining structural biomimicry (hierarchical root system network), intelligent control, and closed-loop energy (heat dissipation-recovery-utilization). It is suitable for green, intelligent, and high-quality construction of large-volume concrete structures.

[0062] This embodiment uses the construction of a 60-meter-deep, 1.0-meter-thick, 6-meter-long single-slot diaphragm wall (anti-seepage wall) as an application scenario to describe the implementation process of the present invention in detail.

[0063] 1. System Layout and Installation (Optimized for Cut-off Wall Structure): During the fabrication of the anti-seepage wall reinforcement cage (or embedded truss), the graded root-system heat dissipation pipe network is simultaneously integrated into the cage body as a standard module (refer to...). Figure 1 In response to the characteristics of the cutoff wall being "deep, narrow, and long," the system layout is designed as follows: Pipeline layout: Along the length of the wall (within a 6-meter range), the vertical main pipeline 1 is laid out at a center-to-center spacing of 1 meter. The main pipeline 1 uses DN50 thin-walled stainless steel pipes, which are laid close to the main reinforcement bars on both sides. Its length is 1.5 meters longer than the trench depth (0.5 meters from the bottom of the trench at the bottom and 1.0 meter from the top of the wall at the top).

[0064] Root system structure: From each main pipe 1, a branch is set every 1.5 meters vertically, connecting to the horizontal branch pipes 3. The branch pipes 3 use DN25 PE pipes, extending horizontally along the wall thickness, with both ends 150mm away from the wall protective layer. From the branch pipes 3, even finer capillary tubes 4 (DN10 plastic flexible tubes) branch off, forming a local capillary network within the wall thickness range.

[0065] Sensing and Control: Sensors (waterproof temperature sensors) are directly strapped to branch pipes 3, arranged in a grid of 2 meters (vertical) × 1 meter (horizontal). Flow control valves are centrally installed at the inlet of all main pipes 1 on the top of the wall for easy centralized control. Controllers, circulating water pumps, plate heat exchangers, and heat storage / energy consumption devices (for heating the adjacent mud system or campsite) are located on the construction platform near the trench.

[0066] 2. Pouring of the seepage barrier. When the pouring surface covers the first layer (approximately 3 meters deep) of the branch pipe 3, the circulating water pump is started to inject low-temperature cooling water into the pipe network. The system begins operation, and the controller monitors the initial temperature in real time.

[0067] 3. Intelligent temperature control and heat recovery process (refer to...) Figure 2 process): Phase 1 (Rapid Temperature Rise Period): Data Sensing and Decision Making: System monitoring shows that the temperature rises fastest in the middle of the wall, with some measuring points experiencing rapid temperature increases. The controller determines this area to be a key heat dissipation zone and decides to enter "full-power heat dissipation mode".

[0068] Active regulation and execution: The controller instructs the flow control valves at the inlet of the 1-2 main pipelines corresponding to the high-temperature area to increase their opening to the maximum, and supplies basic flow to other pipelines, forming a heat dissipation pattern of "focusing on key areas and covering the whole." Since the pipeline spacing is 1 meter, an effective heat dissipation matrix is ​​formed, which can quickly remove heat.

[0069] Synchronous operation of heat recovery mode: The plate heat exchanger starts up and transfers the recovered heat to the heat storage / energy consumption device.

[0070] Phase Two (Period of Continued High Temperatures and Gradual Decline): Data Sensing and Decision Making: The highest temperature inside the wall reaches its peak and then enters a plateau phase. At this time, the temperature difference between the center of the wall and its surface (the side in contact with the soil) becomes the key control factor. When the temperature difference reaches 20°C, the system automatically switches to "insulation and slow-release mode".

[0071] Active regulation and execution: The controller strategically reduces the cooling water flow rate of the main pipe 1 near both sides of the wall (the side in contact with the soil) (the flow control valve opening is reduced to 40%), while maintaining the flow rate in the central area pipes to balance the internal and external temperature differences and prevent the wall surface from shrinking and cracking due to excessive cooling. The 1-meter dense pipe spacing provides the physical basis for this precise regulation.

[0072] Phase Three (Goal Achievement): The system is continuously monitored, and its core task is to operate intermittently in heat recovery mode based on the outlet water temperature.

[0073] 4. Judgment and post-processing of temperature control target achievement Post-treatment and pipeline sealing (for the specific requirements of the anti-seepage wall): Media Discharge and Cleaning: Stop circulation and use pump suction and compressed air to drain the water from the pipe network inside the wall in stages. Then inject clean water for circulation cleaning to ensure the pipes are clean.

[0074] High-pressure circulating grouting and sealing: key to ensuring the long-term seepage prevention performance of the cutoff wall. Specialized ultra-fine cement-based grouting material is used, injected through a high-pressure grouting pump from the inlet of the main pipeline at the top of the wall. A dense network of pipes spaced 1 meter apart serves as the grouting channel, implementing a "bottom-up, segmented advancement, and circulating air removal" process. Return grout pipes are installed at the bottom of each pipeline to ensure the grout fills the entire "root" network, and air is thoroughly removed through circulation.

[0075] Pressure stabilization and curing: Stabilize the pressure at the final pressure to ensure the slurry fully coats the pipe wall and maintains its volume stability. Seal the pipe opening.

[0076] Final treatment of the port: After the grout strength reaches the standard, cut the exposed pipe head on the top of the wall and carefully seal and smooth it with waterproof mortar of the same grade as the wall to ensure the integrity and continuous seepage prevention of the top of the wall.

[0077] Implementation Results: In this ultra-deep cutoff wall project, the application of this invention successfully reduced the temperature difference between the inside and outside of the wall to less than 25°C, effectively preventing the formation of penetrating temperature cracks and ensuring the ultimate seepage prevention function of the cutoff wall. Simultaneously, the recovered heat energy was utilized, reducing auxiliary energy consumption during construction. Post-treatment grouting and sealing, as confirmed by subsequent core sampling, demonstrated that the pipe network was densely filled, well-bonded with the concrete, and did not form new seepage paths.

[0078] The aforementioned temperature sensors, fluid flow meters, flow control valves, flow direction control valves, backwash solenoid valves, slurry control valves, exhaust valves, heat exchangers, prediction models, optimization models, long short-term memory networks, gated loop units, convolutional neural networks, attention mechanism networks, genetic algorithm models, particle swarm optimization models, simulated annealing algorithm models, ant colony optimization models, visualization modules, digital twin models, and other devices and functional modules can all adopt applicable devices and functional modules in the prior art, or adopt devices, functional modules, and software in the prior art and construct them using conventional technical means.

[0079] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The patent scope of the present invention should not be limited by these embodiments. That is, all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A graded root-based active heat dissipation and heat recovery system for ultra-deep concrete, characterized in that, The system includes: a control module, a heat recovery module, and a multi-level topological pipe network located within the poured concrete to dissipate the heat of hydration reaction, forming a tree-like hierarchical structure. This pipe network comprises sequentially connected main pipes, branch pipes, and capillary tubes. The main pipes are vertically installed within the poured concrete. Branch pipes are lateral branches from the main pipes, extending horizontally or obliquely. Capillary tubes are radial pipes further branching from the branch pipes. The control module includes a temperature sensor group, a flow meter group, a flow control valve group, a flow direction control valve group, and a controller. The temperature sensor group is used to detect external... The system monitors the concrete temperature in the heat dissipation areas corresponding to each pipe network node within the concrete pouring system; the fluid flow meter group is used to detect the fluid flow rate at each pipe network node; the flow control valve group is used to control the fluid flow rate at each pipe network node; the flow direction control valve group is used to control the fluid entering and exiting the pipe network, the flow direction entering and exiting the pipe network, and the flow direction after exiting the pipe network; the controller is used to collect the detection signals from the temperature sensor group and the fluid flow meter group in real time, predict the concrete temperature changes in the heat dissipation areas corresponding to each pipe network node, dynamically calculate and allocate the fluid flow rate at each pipe network node, and output signals to control the operation of the flow control valve group and the flow direction control valve group.

2. The ultra-deep concrete graded root system active heat dissipation and heat recovery system according to claim 1, characterized in that, The controller is equipped with a predictive model for predicting the concrete temperature of the heat dissipation area corresponding to each pipe network node and an optimization model for optimizing the pipe network flow control strategy. The predictive model is built based on a neural network model, which predicts the concrete temperature of the heat dissipation area corresponding to each pipe network node based on the current and historical concrete temperature and fluid flow data of each pipe network node. The optimization model optimizes the allocation of fluid flow for heat transfer at each pipe network node based on the real-time detection data and predictive data of the concrete temperature and fluid flow of the heat dissipation area corresponding to each pipe network node.

3. The ultra-deep concrete graded root system active heat dissipation and heat recovery system according to claim 2, characterized in that, Neural network models are constructed from one or more of the following combinations of neural networks: long short-term memory networks, gated recurrent units, convolutional neural networks, and attention mechanism networks.

4. The ultra-deep concrete graded root system active heat dissipation and heat recovery system according to claim 2, characterized in that, The optimization model is constructed from one or more of the following algorithm models: genetic algorithm model, particle swarm optimization model, simulated annealing algorithm model, and ant colony optimization model.

5. The ultra-deep concrete graded root system active heat dissipation and heat recovery system according to claim 1, characterized in that, The system also includes a visualization module, which displays the topology of the pipe network, the concrete temperature of the heat dissipation area corresponding to each pipe network node, the fluid flow rate of each pipe network node, and the status parameters of the pipe flow valve. It has a built-in digital twin model, which is used to simulate the topology of the pipe network, the concrete temperature of the heat dissipation area corresponding to each pipe network node, the fluid velocity of each pipe network node, and the opening of the pipe flow valve. The digital twin model is driven by data from the control module, and simulates scene changes and data display in real time.

6. The ultra-deep concrete graded root system active heat dissipation and heat recovery system according to claim 1, characterized in that, The system also includes a backwash input pipeline and a backwash output pipeline. One end of the backwash input pipeline is connected to the flushing fluid supply port through the first backwash solenoid valve, and the other end is connected to the return pipeline. One end of the backwash output pipeline is connected to the input port of the main pipeline through the second backwash solenoid valve, and the other end is connected to the flushing fluid recovery device. The controller is equipped with a backwashing module, which is automatically or manually activated periodically. The backwashing module outputs a signal to activate the first and second backwashing solenoid valves and the flow control valves at each pipeline node. This allows the fluid to flow in from the backwashing input pipeline, then sequentially through the return pipeline and the main pipeline, and finally out from the backwashing output pipeline, thus completing the backwashing process.

7. The ultra-deep concrete graded root-type active heat dissipation and heat recovery system according to claim 1, characterized in that, The system also includes a slurry input pipeline and a network venting pipeline. The slurry input pipeline is connected to the main pipeline; the network venting pipeline is connected to the return pipeline; a slurry control valve is installed on the slurry input pipeline, and an venting valve is installed on the network venting pipeline; when the concrete temperature control target is achieved and pipeline sealing is required, the controller outputs a signal to control the opening of the slurry control valve, allowing slurry to be injected into the network; when slurry is injected into the network, the control module outputs a signal to control the opening of the venting valve, allowing gas in the network to be discharged.

8. A method for regulating the graded root-based active heat dissipation and heat recovery system of ultra-deep concrete using the system described in claim 1, characterized in that, This method includes the following steps: Lay out main pipelines, branch pipelines and capillary pipelines and connect them to form a topological network; Concrete pouring is carried out. After the concrete pouring is completed, the control module and the circulation pump of the pipeline network are started to introduce fluid. The controller collects the detection signals from the temperature sensor group and the fluid flow meter group in real time, predicts the concrete temperature change of the heat dissipation area corresponding to each pipeline node, and starts different working modes according to different working conditions. According to different working modes, it dynamically calculates and distributes the flow rate of the fluid at each pipeline node, and outputs signals to control the operation of the flow control valve group and the flow direction control valve group. Set the working mode to the following two modes: heat dissipation and heat recovery mode and heat preservation and slow release mode; set the heat dissipation recovery temperature threshold range and the heat preservation and slow release temperature threshold. When the temperature in the core area of ​​the concrete pouring is greater than or equal to the lower limit of the heat dissipation and recovery temperature threshold range, the controller operates in heat dissipation and heat recovery mode, causing the opening of the flow control valve of the pipeline node to rise and fall with the temperature of the concrete in its corresponding area; when the temperature in the core area of ​​the concrete pouring exceeds the upper limit of the heat dissipation and recovery temperature threshold range, the flow control valve of all pipeline nodes is opened to the maximum; the fluid carrying heat energy flows through the heat exchanger, and the heat carried by the fluid is transferred to the heat absorption medium in the heat exchanger, storing the heat energy or directly delivering the heat energy to the demand unit. When the temperature in the core area of ​​the concrete pouring is less than the lower limit of the heat dissipation recovery temperature threshold range, or when the temperature difference between the concrete interior and the ambient temperature is less than or equal to the heat preservation and slow release temperature threshold, the controller operates in heat preservation and slow release mode, reduces the fluid flow rate, or provides auxiliary heat preservation to the surface area to control thermal stress.

9. The method for graded root-based active heat dissipation and heat recovery control in ultra-deep concrete according to claim 8, characterized in that, The system is also equipped with a backwash input pipeline and a backwash output pipeline. One end of the backwash input pipeline is connected to the flushing fluid supply port through the first backwash solenoid valve, and the other end is connected to the return pipeline. One end of the backwash output pipeline is connected to the input port of the main pipeline through the second backwash solenoid valve, and the other end is connected to the flushing fluid recovery device. The controller is equipped with a backwashing module, which is automatically or manually activated periodically. The backwashing module outputs a signal to activate the first and second backwashing solenoid valves and the flow control valves at each pipeline node. This allows the fluid to flow in from the backwashing input pipeline, then sequentially through the return pipeline and the main pipeline, and finally out from the backwashing output pipeline, thus completing the backwashing process.

10. The method for graded root-based active heat dissipation and heat recovery control in ultra-deep concrete according to claim 9, characterized in that, In situations where grouting and sealing of heat dissipation pipes are required to achieve the concrete temperature control target, the system is also equipped with a grout input pipe and a pipe network venting pipe. The grout input pipe is connected to the main pipe; the pipe network venting pipe is connected to the return pipe; a grout control valve is installed on the grout input pipe, and an venting valve is installed on the pipe network venting pipe; when pipe sealing is required after the concrete temperature control target is achieved, the control module outputs a signal to control the opening of the grout control valve, allowing grout to be injected into the pipe network; while the grout is being injected into the pipe network, the control module outputs a signal to control the opening of the venting valve, allowing gas in the pipe network to be discharged; Once the concrete temperature control target is achieved, the fluid in the topology network is extracted, and clean water is introduced to circulate and flush the inside of the network to remove deposits and impurities; then compressed air is introduced into the network to discharge the remaining liquid medium. The circulating slurry, prepared using micro-expansion cement grouting material, is injected into the pre-set grouting port of the pipeline system through a pressure grouting machine; Start the circulation mode to allow the slurry to circulate continuously in the closed pipe network. During the slurry circulation process, continuously or intermittently turn on the exhaust device to completely remove the air trapped in the pipe until the exhaust pipe continuously flows out full and bubble-free slurry. After the venting is completed, the circulation is stopped and the pressure stabilization injection mode is switched to. The pressure is maintained for a period of time to ensure that the grout completely fills every gap in the pipeline network. Then, all inlets and outlets are sealed to allow the pipeline network to cure under static pressure. Port sealing and surface treatment: After the sealing grout strength reaches the design requirements, the exposed pipe joints and vent pipes are cut off and smoothed and repaired with cement mortar of the same strength grade as the structure, so that the temporary temperature control system is permanently and seamlessly integrated into the concrete structure.

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