Urban road water body underpass diversion system based on modular design and construction method

Abstract

The invention discloses an urban road water body underpass diversion system based on modular design and a construction method, and relates to the technical field of urban road drainage, the urban road water body underpass diversion system comprises a road foundation layer module, a connecting structure and an intelligent monitoring module, the road foundation layer module comprises a plurality of water body underpass diversion prefabricated units, a flow guide unit, a filter unit, a precipitation unit and an ecological restoration unit are arranged in the water body underneath pass flow guide prefabricated unit, and the method further comprises the steps of S1 geological adaptability design, S2 module prefabrication and optimization, S3 flow guide tunnel construction and S4 module assembly and sealing. According to the invention, the water body underpass diversion is effectively realized through the water body underpass diversion prefabricated unit, the drainage capacity of an urban road in extreme weather such as rainfall flood is improved, and the probability of urban waterlogging is reduced; the filtering unit can deeply purify the water body to reduce water pollution and improve the urban water environment quality; the system operation state is monitored in real time, faults are predicted in advance, and the operation and maintenance efficiency and reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of urban road drainage, and in particular to an urban road water body underpass diversion system and a construction method based on modular design. Background Art

[0002] With the acceleration of urbanization, the continuous expansion of cities, and the high concentration of population and infrastructure, urban drainage and water environment issues are becoming increasingly prominent. Traditional urban road drainage systems have exposed many shortcomings when dealing with extreme weather such as rainstorms and floods, and are no longer able to meet the needs of sustainable urban development.

[0003] Existing urban road drainage systems mostly rely on traditional concrete pipes, which have a relatively simple structure and are significantly inadequate in extreme weather conditions such as heavy rain and flooding. Urban waterlogging frequently occurs, severely impacting urban traffic order and residents' lives. For example, in some large cities, heavy rains often cause severe road flooding, paralyzing traffic, hindering residents' travel, and causing property damage. This not only reduces urban operational efficiency but also poses a threat to urban safety. Furthermore, traditional drainage systems require extensive on-site concrete pouring and pipe laying, resulting in long construction periods and significant impacts on traffic and the surrounding environment. Furthermore, ongoing maintenance is difficult, and once pipe blockages and leaks occur, repair costs are high and efficiency is low. Drainage system maintenance in busy urban areas often requires road closures, further exacerbating traffic congestion. Urban construction often encounters complex geological conditions such as fault zones and alternating soft and hard strata. Traditional drainage systems are difficult to flexibly adapt to geological conditions, prone to structural damage and poor drainage, which impacts the system's stability and service life. Therefore, it is urgent to develop an efficient, environmentally friendly, intelligent, and adaptable urban road water diversion system that can adapt to complex geological conditions. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and propose an urban road water underpass diversion system and construction method based on modular design to solve the problems in the above technical solutions.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an urban road water diversion system based on a modular design includes a road foundation module, a connection structure, and an intelligent monitoring module. The road foundation module includes a plurality of prefabricated water diversion units, which are spliced along the extension direction of the road. The prefabricated water diversion units are internally provided with a diversion unit, a filtration unit, a sedimentation unit, and an ecological restoration unit. The connection structure adopts a flange-type snap structure for connection, with an adaptive rubber sealing ring embedded inside. A water diversion groove and an epoxy resin injection channel are provided at the splicing joint. The connection structure is used for the connection between the prefabricated units for water diversion under the water body; The intelligent monitoring system integrates a flow sensor, a water quality analyzer, and a blockage warning device. The monitoring data of the flow sensor, the water quality analyzer, and the blockage warning device are transmitted to the cloud control platform through a 5G network. The intelligent monitoring system is used for rain and flood scheduling decision-making.

[0006] Furthermore, the diversion unit adopts a composite structure of a corrugated pipe and an arc-shaped diversion groove, with a detachable inspection opening provided at the top. The diversion path of the diversion unit is dynamically optimized based on precise calculations of fluid mechanics; The path design of the diversion unit combines geological radar and karst pipeline distribution data, supporting dynamic combination methods of straight-line type, S-type, and bifurcated type, and is used to adapt to the complex geological conditions of fault zones or hard-soft alternating strata.

[0007] Furthermore, the filtration unit adopts a four-layer three-dimensional structure of a gravel layer - perforated collection pipe - fine sand layer - activated carbon layer, and the water body is purified by the synergistic action of plant roots and microorganisms; The four-layer three-dimensional structure of the gravel layer - perforated collection pipe - fine sand layer - activated carbon layer of the filtration unit adopts a drawer-type replaceable design for replacing and maintaining the filter layer. The activated carbon layer is equipped with a regeneration function module to achieve in-situ degradation of pollutants through electrochemically assisted oxidation technology.

[0008] Furthermore, the bottom of the sedimentation unit is designed with an inclined sludge collection tank, combined with a high-pressure flushing system and an external dredging pipeline, and a real-time monitoring sensor for sediment deposition is installed; The sedimentation unit is connected to an intelligent dredging robot, and the intelligent dredging robot accurately locates the siltation area through AI image recognition technology; The monitoring sensor incorporates blockchain technology to achieve non-tamperable evidence storage of construction data, operation and maintenance records, and environmental monitoring information, ensuring the authenticity and security of the data.

[0009] Furthermore, the ecological restoration unit is internally equipped with pollution-tolerant landscape plants such as Lythrum salicaria and Cyperus alternifolius to form a micro wetland system; The ecological restoration unit is linked with the bioretention facilities in the road side separation zone to jointly form a sponge complex of road - green space - water system; A rubber asphalt flexible buffer layer is laid on the top of the ecological restoration unit to increase the elastic modulus and reduce the movement impact force.

[0010] Construction method of urban road water body underpass diversion system based on modular design, which is applied to the above-mentioned urban road water body underpass diversion system based on modular design, and includes the following construction steps: S1. Geological adaptability design: Use ground-penetrating radar to comprehensively scan the geology under the road to obtain geological structure data with centimeter-level accuracy. Combine karst pipeline detection technology to accurately determine parameters such as the position, trend, and pipe diameter of karst pipelines; generate a detailed three-dimensional geological model based on these data, and analyze factors such as groundwater flow direction and formation stability; for areas with fault zones or alternating hard and soft strata, use the model to simulate the stress and diversion conditions under different module layouts, and determine the most suitable arrangement method and installation angle of the water body underpass diversion precast units to ensure the stability and diversion effect of the entire diversion system under complex geological conditions; S2. Module prefabrication and optimization: In the prefabrication factory, produce water body underpass diversion precast units according to the design requirements; use high-precision molds and advanced production processes to ensure that the dimensional error of each unit is controlled within ±3mm; During the prefabrication process, integrate the manufacturing of diversion units, filtration units, sedimentation units, and ecological restoration units; and based on finite element analysis software, simulate the stress distribution of the modules under different assembly sequences and stress conditions, optimize the structural design, strengthen the strength of key parts, and adjust the shape and size of the connection interfaces; At the same time, optimize the drawer-type structure of the filtration unit to make it more convenient for replacement and maintenance, and test and debug the regeneration function module of the activated carbon layer to ensure the stable operation of its electrochemical oxidation technology; S3. Diversion tunnel construction: Use excavation equipment suitable for different geological conditions, such as using an earth pressure balance shield machine in soft soil strata and a rock tunneling machine in hard rock strata; During the tunneling process, strictly control the tunneling direction and slope, with the tunneling direction deviation controlled within ±10mm and the slope error controlled within ±0.1%. Conduct a geological re-inspection every 5 - 10 meters of tunneling, and adjust the tunneling parameters according to the actual geological conditions; At the same time, synchronously install module positioning guides, with the installation accuracy of the guides controlled within a horizontal deviation of ±2mm and a vertical deviation of ±3mm to provide accurate positioning for the subsequent installation of modules. After tunneling is completed, conduct initial support for the tunnel to ensure the stability of the tunnel; S4. Module assembly and sealing: Use a crane to lift the prefabricated water body underpass diversion precast units into the tunnel and splice them in the designed order; During the splicing process, ensure that the docking error between adjacent units does not exceed ±5mm through high-precision measuring instruments, and use a hydraulic device to assist in the connection, tightly connecting the flanged snap structure to ensure a firm connection; Embed an adaptive rubber sealing ring at the connection part to ensure the sealing effect and prevent water leakage. Inject epoxy resin sealant, and the injection volume is accurately calculated according to the joint size to ensure that the glue layer is uniform and full. After the injection is completed, carry out curing and maintenance, and the maintenance time is determined according to the ambient temperature and the characteristics of the glue, not less than 24 hours; After the installation is completed, conduct a sealing detection on the connection part to ensure that the waterproof grade meets the design requirements; S5. Intelligent system integration: During the installation of each module, synchronously lay the Internet of Things sensor network, install the flow sensor, water quality analyzer and blockage warning device at the specified positions. The flow sensor is installed at the key positions of the diversion unit to ensure that the water flow can be accurately measured with an accuracy of ±2%; The water quality analyzer is installed at the filtration unit and the water outlet position to monitor the water quality changes in real time; The blockage warning device is installed at the parts prone to blockage, and the sensor data is transmitted to the cloud control platform through the 5G communication module, and the data is integrated and analyzed on the platform; Use digital twin technology to build a virtual diversion system model, and compare and optimize it with the actual system in real time to ensure the accuracy and reliability of the intelligent monitoring system; S6. System commissioning and testing: After the module assembly and intelligent system integration are completed, conduct a comprehensive commissioning of the entire diversion system, inject simulated sewage and rainwater into the system, and test the diversion capacity of the diversion unit, the purification effect of the filtration unit, the sediment deposition and cleaning function of the sedimentation unit, and the ecological purification capacity of the ecological restoration unit; Check the operation of the intelligent monitoring system, verify the data accuracy and transmission stability of the flow sensor, water quality analyzer and blockage warning device, and adjust and repair the problems found in time to ensure that the performance indicators of the system meet the design requirements; Conduct multi-condition tests, including tests under different flow rates, different pollutant concentrations, etc., simulate extreme weather and special working conditions to ensure that the system can operate stably under various conditions; S7. Post-maintenance and monitoring: After the system is put into use, establish a regular maintenance system. According to the real-time monitoring data of the sediment deposition volume in the sedimentation unit, when the deposition volume reaches the warning value, start the intelligent dredging robot for dredging operations; Use blockchain technology to record construction data, operation and maintenance records, and environmental monitoring information to ensure that the data cannot be tampered with. Regularly check and replace the drawer-type filter layer of the filtration unit, and maintain and repair the regeneration function module of the activated carbon layer; At the same time, through the cloud control platform, monitor the operation status of the system in real time, discover and handle potential problems in time, and ensure the long-term stable operation of the urban road water body underpass diversion system.

[0011] Further, in the S1 geological adaptability design step, the obtained geological data is encrypted using the AES-256 standard encryption algorithm to prevent data leakage and tampering, ensuring the security of geological data and providing a reliable basis for subsequent design and construction.

[0012] Further, in the S3 diversion tunnel construction step, environmentally friendly dust and noise reduction measures are adopted. By setting up spray dust suppression equipment, the dust concentration at the construction site is reduced by more than 80%; low-noise tunneling equipment and sound insulation barriers are used to control construction noise within the urban environmental noise standard, reducing the impact on surrounding residents and the environment.

[0013] Further, in the S7 post-maintenance and monitoring step, big data analysis technology is used to deeply mine the operation data accumulated over a long period; and by analyzing the change trends of data such as flow rate, water quality, and sediment deposition, potential faults and problems of the system are predicted, and maintenance plans and emergency plans are formulated in advance to improve the maintenance efficiency and reliability of the system and reduce maintenance costs.

[0014] In summary, the present invention provides an urban road water body underpass diversion system and construction method based on modular design, having the following beneficial effects: 1. By integrating the diversion unit, filtration unit, sedimentation unit, and ecological restoration unit into the water body underpass diversion precast unit, and the units work together, the water body underpass diversion can be effectively realized, significantly improving the drainage capacity of urban roads in extreme weather such as rainstorms and floods, greatly reducing the probability of urban waterlogging, and ensuring the normal operation of urban traffic and residents' lives.

[0015] 2. The filtration unit adopts a four-layer three-dimensional structure of gravel layer - perforated collection pipe - fine sand layer - activated carbon layer, and the water body is purified by the synergistic action of plant roots and microorganisms. At the same time, the activated carbon layer is equipped with a regeneration function module, and in-situ degradation of pollutants is achieved through electrochemically assisted oxidation technology. Combined with the effective treatment of sediment by the sedimentation unit, the water body can be deeply purified, reducing water pollution and improving the urban water environment quality.

[0016] 3. The ecological restoration unit is internally provided with pollution-tolerant landscape plants such as Lythrum salicaria and Cyperus alternifolius, forming a micro-wetland system, which is linked with the bioretention facilities in the road side median strip to jointly construct a sponge complex of road - green space - water system, helping to repair and improve the urban ecological environment, enhancing the stability and self-purification ability of the urban ecological system, and improving the urban ecological landscape effect.

[0017] 4. The path design of the diversion unit combines geological radar and karst pipeline distribution data to support multiple dynamic combinations such as linear, S-shaped, and bifurcated types. It can be dynamically optimized according to complex geological conditions such as fault zones or alternating soft and hard strata, ensuring that the entire diversion system can maintain good stability and diversion effects in different geological environments. This broadens the system's application range and reduces the impact of geological factors on system operation.

[0018] 5. The system integrates an intelligent monitoring module, which monitors the system's operating status in real time through flow sensors, water quality analyzers and blockage warning devices. The data is transmitted to the cloud control platform via the 5G network and uses digital twin technology for real-time comparison and optimization. At the same time, the modular design facilitates installation, disassembly and maintenance. The intelligent monitoring system can predict faults and problems in advance, facilitate the formulation of accurate maintenance plans and emergency plans, effectively reduce the long-term maintenance costs of the system, and improve operation and maintenance efficiency and system reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of an embodiment of the present application.

[0020] Figure 2 It is a flow chart of the construction method of an embodiment of the present application.

[0021] Explanation of the accompanying symbols: 1. Prefabricated diversion unit for water body; 11. Diversion unit; 111. Inspection port; 12. Filtration unit; 121. Gravel layer; 122. Perforated collection pipe; 123. Fine sand layer; 124. Activated carbon layer; 13. Sedimentation unit; 14. Ecological restoration unit; 141. Flexible buffer layer; 2. Connection structure. DETAILED DESCRIPTION

[0022] The following is a combination of the embodiments of the present invention Figure 1-2 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The present invention provides a technical solution: a modular design of the urban road water body underpass diversion system, referring to Figure 1, including a road foundation layer module, a connecting structure 2 and an intelligent monitoring module. The road foundation layer module includes several water-passing diversion prefabricated units 1. The water-passing diversion prefabricated units 1 are spliced along the extension direction of the road, making the construction process more convenient and efficient. The number of modules can be flexibly adjusted according to the actual length of the road, reducing the complexity of on-site construction and improving the construction speed. Moreover, during later maintenance, if a prefabricated unit has a problem, it can be easily disassembled and replaced separately, reducing maintenance costs; the water-passing diversion prefabricated unit 1 is internally provided with a diversion unit 11, a filtration unit 12, a sedimentation unit 13 and an ecological restoration unit 14, integrating multiple functional units into one prefabricated unit, realizing a high degree of functional integration, and the units working together can effectively improve the overall diversion, purification and ecological restoration effects, reduce the system's footprint, and improve space utilization efficiency.

[0024] Connection structure 2 utilizes a flange-type snap-fit structure with an internally embedded adaptive rubber seal. A water channel and epoxy resin injection channel are provided at the joint. Connection structure 2 is used to connect the prefabricated diversion units 1 under the water flow. The flange-type snap-fit structure provides a secure connection, facilitates quick assembly, and improves construction efficiency. The adaptive rubber seal and epoxy resin injection channel effectively prevent water leakage, ensuring the system's tightness and avoiding soil erosion and environmental pollution caused by leakage. The water channel guides any water seepage at the joint, preventing it from accumulating and affecting structural stability.

[0025] The intelligent monitoring system is installed in the prefabricated diversion unit 1 under the water body. The intelligent monitoring system integrates flow sensors, water quality analyzers and blockage warning devices. The monitoring data of the flow sensors, water quality analyzers and blockage warning devices are transmitted to the cloud control platform through the 5G network. The intelligent monitoring system is used for stormwater scheduling decisions. By real-time monitoring of flow, water quality and blockage, the operating status of the system can be grasped in a timely manner. Based on the fast data transmission of the 5G network, real-time analysis and processing of monitoring data can be realized, providing a scientific basis for stormwater scheduling, enabling cities to conduct more accurate scheduling when facing stormwater disasters, improving the response capacity of urban drainage systems, and ensuring urban safety.

[0026] The diversion unit 11 adopts a composite structure of a bellows and an arc-shaped diversion groove, and a detachable inspection port 111 is provided on the top. The diversion path of the diversion unit 11 is dynamically optimized based on precise calculations of fluid mechanics. The composite structure of the bellows and the arc-shaped diversion groove enhances the diversion effect, improves the smoothness of water flow, and reduces water flow resistance; the detachable inspection port 111 on the top facilitates regular inspection and maintenance of the inside of the diversion unit 11, timely cleaning of debris and troubleshooting, and ensuring the normal operation of the diversion unit 11; the dynamically optimized diversion path can be adjusted according to different water flow conditions to improve the diversion efficiency of the system.

[0027] The path design of the diversion unit 11 combines ground penetrating radar and karst pipeline distribution data, supports dynamic combination modes of straight line type, S type and bifurcated type, is used to adapt to the complex geological conditions of fault zones or hard-soft alternating strata, enables the diversion unit 11 to flexibly adjust the path according to different geological conditions, effectively avoids the unsmooth diversion or structural damage caused by geological problems, broadens the application scope of the system, and improves the stability and reliability of the system in complex geological environments.

[0028] The filtering unit 12 adopts a four-layer three-dimensional structure of gravel layer 121 - perforated collecting pipe 122 - fine sand layer 123 - activated carbon layer 124, and purifies the water body with the synergistic effect of plant roots and microorganisms. The four-layer three-dimensional structure and the synergistic effect of plant roots and microorganisms can purify the water body in multiple levels and all directions, effectively remove impurities, pollutants and harmful substances in the water, and significantly improve the water quality. The plant roots can also play a certain role in soil fixation and enhance the stability of the system; The four-layer three-dimensional structure of the gravel layer 121 - perforated collecting pipe 122 - fine sand layer 123 - activated carbon layer 124 of the filtering unit 12 adopts a drawer-type replaceable design for replacing and maintaining the filter layer. The activated carbon layer 124 is equipped with a regeneration function module, and realizes in-situ degradation of pollutants through electro-chemical oxidation technology. The drawer-type replaceable design can replace the filter layer conveniently and quickly, reduce the maintenance difficulty and cost; the regeneration function module of the activated carbon layer 124 can continuously maintain the purification ability, reduce the replacement frequency of activated carbon, improve the resource utilization rate, and further improve the purification effect by in-situ degrading pollutants.

[0029] The filtering unit 12 includes a perforated collecting pipe 122 and a permeable pavement system. The permeable pavement system adopts a structure of permeable bricks - permeable concrete - graded gravel and realizes seamless connection. The permeable pavement system can quickly collect and infiltrate the rainwater on the road surface, increase the infiltration amount of rainwater, supplement groundwater, and reduce surface water accumulation. The seamless connection design ensures the smooth flow of water between layers, and improves the filtering and drainage efficiency.

[0030] The bottom of the sedimentation unit 13 is designed with an inclined sludge collecting tank, combines a high-pressure flushing system and an external dredging pipeline, and installs a real-time monitoring sensor for sediment deposition amount. The inclined sludge collecting tank design is conducive to the natural sedimentation and collection of sediment, and is convenient for subsequent cleaning. The high-pressure flushing system and the external dredging pipeline cooperate with each other to efficiently remove the deposited sediment and keep the sedimentation unit 13 operating normally. The real-time monitoring sensor for sediment deposition amount can timely master the sediment deposition situation, provide an accurate basis for the dredging operation, and avoid affecting the system performance due to excessive sediment accumulation.

[0031] The sedimentation unit 13 is connected to an intelligent dredging robot. The intelligent dredging robot accurately locates the silted areas through AI image recognition technology, and uses AI image recognition technology to achieve precise dredging, improving the dredging efficiency and accuracy, reducing the workload and difficulty of manual dredging, and lowering the labor cost. At the same time, it can promptly clean the silted areas, ensuring the sedimentation effect of the sedimentation unit 13 and the normal operation of the system.

[0032] The monitoring sensors are embedded with blockchain technology, which is used to achieve the non-tamperable storage of construction data, operation and maintenance records, and environmental monitoring information, ensuring the authenticity and security of the data. The application of blockchain technology guarantees the credibility of the data, providing reliable data support for the construction, operation and maintenance, and environmental monitoring of the system. When problems occur, the traceable data can help quickly identify the causes, facilitating liability determination and problem-solving.

[0033] The ecological restoration unit 14 is built-in with pollution-tolerant landscape plants such as Lythrum salicaria and Cyperus alternifolius, forming a micro-wetland system. The pollution-tolerant landscape plants can absorb pollutants in the water body, playing a role in purifying the water quality. At the same time, the micro-wetland system provides habitats for organisms, increasing biodiversity and improving the ecological environment. The landscape plants can also beautify the urban environment and enhance the urban landscape effect.

[0034] The ecological restoration unit 14 is linked with the bioretention facilities in the road side separation zone to jointly form a sponge complex of road - green space - water system. By forming a sponge complex through linkage with other facilities, the sponge city function of the city is enhanced, the ability to absorb, infiltrate, and purify rainwater is improved, the urban waterlogging problem is effectively alleviated, and the healthy cycle of the urban ecological system is promoted.

[0035] A rubber asphalt flexible buffer layer 141 is laid on the top of the ecological restoration unit 14 to increase the elastic modulus and reduce the moving impact force. The rubber asphalt flexible buffer layer 141 can reduce the impact of vibrations and impact forces generated by vehicle driving, etc. on the ecological restoration unit 14, protect the stability of plant roots and system structure, and extend the service life of the ecological restoration unit 14.

[0036] The construction method of the urban road water body underpass diversion system based on modular design, referring to Figure 2 , is applied to the above-mentioned urban road water body underpass diversion system based on modular design, and includes the following construction steps: S1. Geological adaptability design: Use geological radar to conduct a comprehensive scan of the geology under the road to obtain geological structure data with an accuracy of centimeters. Combined with karst pipeline detection technology, the location, direction, diameter and other parameters of the karst pipeline are accurately determined; based on these data, a detailed three-dimensional geological model is generated to analyze the factors of groundwater flow direction and stratum stability; for areas with fault zones or alternating soft and hard strata, the model is used to simulate the stress and diversion conditions under different module layouts, and the most suitable arrangement and installation angle of the water-passing diversion prefabricated unit 1 are determined to ensure the stability and diversion effect of the entire diversion system under complex geological conditions. Through precise geological detection and model simulation, we can fully understand the geological conditions, optimize the module layout and installation method, improve the adaptability and stability of the system under complex geological conditions, reduce the increased construction difficulty and system damage risk caused by geological problems, and ensure the long-term stable operation of the system.

[0037] S2. Module Prefabrication and Optimization: At the prefabrication plant, prefabricated water diversion units 1 are produced according to design requirements. High-precision molds and advanced production processes ensure that the dimensional error of each unit is controlled within ±3mm. This high-precision mold and advanced production process ensure the dimensional accuracy of the prefabricated units, allowing for more precise on-site assembly and improving construction quality and efficiency. Strict control of dimensional errors helps ensure the overall sealing and stability of the system.

[0038] During the prefabrication process, the diversion unit 11, filtration unit 12, sedimentation unit 13, and ecological restoration unit 14 were manufactured in an integrated manner. Finite element analysis software was used to simulate the stress distribution of the modules under different assembly sequences and stress conditions, optimize the structural design, strengthen the strength of key parts, and adjust the shape and size of the connection interfaces. Integrated manufacturing reduces on-site construction processes and improves production efficiency. The application of finite element analysis software optimizes the structural design, improves the strength and stability of the modules, ensures that each unit can function properly under different working conditions, and extends the service life of the system. The drawer-type structure of the filter unit 12 was optimized to facilitate replacement and maintenance, and the regeneration module of the activated carbon layer 124 was tested and debugged to ensure the stable operation of its electrochemical oxidation technology. The optimized drawer-type structure further reduces maintenance difficulty and improves maintenance efficiency. Testing and debugging the regeneration module of the activated carbon layer 124 ensures the stability of its purification performance and ensures that the filter unit 12 can continuously and effectively purify water. S3. Diversion tunnel construction: Use excavation equipment suitable for different geological conditions, such as using an earth pressure balance shield machine in soft soil strata and a rock tunnel boring machine in hard rock strata. Choosing the right excavation equipment based on different geological conditions can improve excavation efficiency, ensure construction progress, reduce damage to the strata, and ensure construction safety. During tunneling, strictly control the tunneling direction and gradient. The deviation of the tunneling direction is controlled within ±10 mm, and the gradient error is controlled within ±0.1%. Every 5 - 10 meters of tunneling, conduct a geological re-inspection, and adjust the tunneling parameters according to the actual geological conditions. Precise tunneling control ensures the construction quality of the tunnel, reduces the deviation and deformation of the tunnel. Regular geological re-inspection and parameter adjustment can timely adapt to geological changes, ensuring construction safety and the stability of the tunnel; At the same time, synchronously install the module positioning guide rail. The installation accuracy of the guide rail is controlled within a horizontal deviation of ±2 mm and a vertical deviation of ±3 mm, providing precise positioning for the subsequent installation of modules. After tunneling is completed, carry out initial support for the tunnel to ensure the stability of the tunnel. The high-precision module positioning guide rail provides an accurate positioning reference for the installation of precast units, improving the installation efficiency and quality; Initial support can timely stabilize the surrounding rock of the tunnel, prevent collapse, and ensure the safety of construction personnel and the smooth progress of subsequent construction; S4. Module assembly and sealing: Use a crane to lift the prefabricated water body underflow diversion precast unit 1 into the tunnel and splice it in the designed order. Crane lifting and orderly splicing ensure the efficient progress of construction, reduce on-site construction time, and improve construction efficiency; During the splicing process, use high-precision measuring instruments to ensure that the docking error between adjacent units does not exceed ±5 mm. Adopt a hydraulic device to assist in connection and tightly connect the flanged snap structure to ensure firm connection. High-precision measurement and hydraulic-assisted connection ensure the accuracy and firmness of splicing, improve the integrity and stability of the system, and prevent leakage and structural instability problems caused by loose connection; Embed an adaptive rubber sealing ring at the connection part to ensure the sealing effect and prevent water body leakage. Inject epoxy resin sealant, and the injection volume is accurately calculated according to the joint size to ensure that the glue layer is uniform and full. After injection, carry out curing and maintenance, and the maintenance time is determined according to the ambient temperature and the characteristics of the glue, generally not less than 24 hours. The double-sealing design of the adaptive rubber sealing ring and epoxy resin sealant effectively prevents water body leakage and ensures the sealing performance of the system. Precise control of the injection volume and curing and maintenance ensure the performance of the sealant and further improve the waterproof performance of the system; After installation, conduct a sealing performance test on the connection part to ensure that the waterproof grade meets the design requirements. The sealing performance test can timely detect and solve sealing problems, ensure that the waterproof performance of the system meets the design standards, and avoid damage to the system and the surrounding environment caused by leakage; S5. Intelligent System Integration: During the installation of each module, the Internet of Things (IoT) sensor network is laid synchronously. The flow sensor, water quality analyzer, and blockage warning device are installed at designated positions. The flow sensor is installed at key positions of the diversion unit 11 to ensure accurate measurement of the water body flow rate with an accuracy of ±2%. The synchronous laying of the IoT sensor network enables the intelligent monitoring of the system. Accurately measuring the water body flow rate helps to understand the operation status of the system and provides data support for rainwater and flood scheduling and system management. The water quality analyzer is installed at the filtration unit 12 and the water outlet position to monitor the water quality changes in real time. The blockage warning device is installed at the parts prone to blockage, and the sensor data is transmitted to the cloud control platform through the 5G communication module. Data integration and analysis are carried out on the platform to monitor the water quality and blockage situation in real time and promptly discover problems in the system operation. 5G communication and the cloud platform enable the rapid transmission and centralized processing of data, facilitating decision-making and regulation by management personnel. The digital twin technology is used to construct a virtual diversion system model, which is compared and optimized with the actual system in real time to ensure the accuracy and reliability of the intelligent monitoring system. By constructing a virtual model and comparing and optimizing it with the actual system, the digital twin technology improves the accuracy and reliability of the intelligent monitoring system, promptly discovers potential problems and makes adjustments to ensure the stable operation of the system. S6. System Commissioning and Testing: After completing the module assembly and intelligent system integration, the entire diversion system is comprehensively commissioned. Simulated sewage and rainwater are injected into the system to test the diversion capacity of the diversion unit 11, the purification effect of the filtration unit 12, the sedimentation and cleaning function of the sedimentation unit 13, and the ecological purification capacity of the ecological restoration unit 14. Comprehensive commissioning and multi-unit testing can comprehensively evaluate the system performance, promptly discover and solve problems existing in the system, and ensure that the system can operate normally after being officially put into use and meet the design requirements. Check the operation of the intelligent monitoring system, verify the data accuracy and transmission stability of the flow sensor, water quality analyzer, and blockage warning device, and promptly adjust and repair the discovered problems to ensure that all performance indicators of the system meet the design requirements. Checking and verifying the intelligent monitoring system ensures the reliability of the monitoring data, provides guarantee for the stable operation of the system, and promptly adjusting and repairing problems can improve the system performance and reliability. Conduct multi-condition tests, including tests under different flow rates, different pollutant concentrations, etc., and simulate extreme weather and special working conditions to ensure that the system can operate stably under various conditions. Multi-condition tests simulate various situations in actual use, improve the adaptability and stability of the system, enable the system to work properly in the face of complex and changeable environments, and ensure the stability of urban drainage and the ecological environment. S7. Post - maintenance and monitoring: After the system is put into use, a regular maintenance system is established. According to the real - time monitoring data of the sediment deposition volume in the sedimentation unit 13, when the deposition volume reaches the warning value, an intelligent dredging robot is started for dredging operations. The regular maintenance system and the application of the intelligent dredging robot ensure the normal operation of the system, timely clean the sediment, reduce system failures caused by sediment accumulation, and improve the service life of the system; The blockchain technology is used to record construction data, operation and maintenance records, and environmental monitoring information to ensure that the data cannot be tampered with. The drawer - type filter layer of the filtration unit 12 is regularly inspected and replaced, and the regeneration function module of the activated carbon layer 124 is maintained. The blockchain technology ensures the authenticity and security of the data, provides a reliable basis for maintenance management, and regularly inspects and maintains the filtration unit 12 and the activated carbon layer 124 to ensure their purification performance and ensure that the system continuously and effectively purifies water bodies; At the same time, the operation status of the system is real - time monitored through the cloud control platform, potential problems are timely discovered and processed, ensuring the long - term stable operation of the urban road water body under - crossing diversion system. The real - time monitoring of the cloud control platform can timely discover potential problems, take measures in advance for processing, reduce the risk of system failures, and ensure the long - term stable operation of the system.

[0039] In the geological adaptability design step of S1, the obtained geological data is encrypted. The encryption algorithm adopts the AES - 256 standard to prevent data leakage and tampering, ensure the security of geological data, and provide a reliable basis for subsequent design and construction.

[0040] In the construction step of the diversion tunnel of S3, environmentally friendly dust - reduction and noise - reduction measures are adopted. By setting up spray dust - reduction equipment, the dust concentration at the construction site is reduced by more than 80%; low - noise tunneling equipment and sound - insulation barriers are used to control the construction noise within the urban environmental noise standard, reducing the impact on surrounding residents and the environment.

[0041] In the post - maintenance and monitoring step of S7, big data analysis technology is used to deeply mine the long - term accumulated operation data; and by analyzing the change trends of data such as flow rate, water quality, and sediment deposition volume, potential faults and problems of the system are predicted, and maintenance plans and emergency plans are formulated in advance to improve the maintenance efficiency and reliability of the system and reduce the maintenance cost.

[0042] The above - mentioned are only the preferred embodiments of the present invention, and it is not limited to other forms of the present invention. Any person skilled in the relevant art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above - mentioned embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. The urban road water body underpass diversion system based on modular design includes a road base layer module, a connection structure (2), and an intelligent monitoring module, and is characterized in that: The road foundation layer module comprises a plurality of water body underpass diversion prefabricated units (1), wherein the water body underpass diversion prefabricated units (1) are spliced along the extension direction of the road; the water body underpass diversion prefabricated units (1) are provided with a diversion unit (11), a filtration unit (12), a sedimentation unit (13) and an ecological restoration unit (14); The connection structure (2) is connected by a flange-type snap-fit structure, with an adaptive rubber sealing ring embedded inside, and a water guide groove and an epoxy resin injection channel are provided at the joint. The connection structure (2) is used for connecting the diversion prefabricated units (1) under the water body; The intelligent monitoring system integrates flow sensors, water quality analyzers and blockage warning devices. The monitoring data of the flow sensors, water quality analyzers and blockage warning devices are transmitted to the cloud control platform through the 5G network. The intelligent monitoring system is used for rainwater scheduling decisions.

2. The urban road water body underpass diversion system based on modular design according to claim 1, characterized in that: The guide unit (11) adopts a composite structure of a bellows and an arc-shaped guide groove, and a detachable inspection port (111) is provided on the top thereof. The guide path of the guide unit (11) is dynamically optimized based on precise calculations of fluid mechanics; The path design of the diversion unit (11) combines geological radar and karst pipeline distribution data, supports dynamic combination of straight line, S-type and bifurcated types, and is used to adapt to the complex geological conditions of fault zones or soft and hard alternating strata.

3. The urban road water body underpass diversion system based on modular design according to claim 1, characterized in that: The filtration unit (12) adopts a four-layer three-dimensional structure of a gravel layer (121) - a perforated collection pipe (122) - a fine sand layer (123) - an activated carbon layer (124), and purifies the water body by means of the synergistic action of plant roots and microorganisms; The four-layer three-dimensional structure of the filtration unit (12), comprising a gravel layer (121) - a perforated collection tube (122) - a fine sand layer (123) - an activated carbon layer (124), adopts a drawer-type replaceable design for replacing and maintaining the filtration layer. The activated carbon layer (124) is equipped with a regeneration function module to achieve in-situ degradation of pollutants through electrochemical oxidation technology. The filtration unit (12) comprises a perforated collection pipe (122) and a permeable paving system, wherein the permeable paving system adopts a permeable brick-permeable concrete-graded crushed stone structure and achieves seamless connection.

4. The modular design-based urban road water body underpass diversion system according to claim 1, characterized in that: The bottom of the sedimentation unit (13) is designed as an inclined mud collecting trough, which is combined with a high-pressure flushing system and an external silt removal pipeline, and is equipped with a real-time monitoring sensor for sediment deposition; The sedimentation unit (13) is connected to an intelligent silt-clearing robot, which accurately locates the siltation area through AI image recognition technology; The monitoring sensors are embedded with blockchain technology to achieve tamper-proof storage of construction data, operation and maintenance records, and environmental monitoring information, ensuring the authenticity and security of the data.

5. The modular design-based urban road water body underpass diversion system according to claim 1, characterized in that: The ecological restoration unit (14) is built with pollution-tolerant landscape plants such as Lythrum salicaria and Cyperus rotundus to form a micro-wetland system; The ecological restoration unit (14) is linked with the road side bioretention facility to form a sponge complex of road, green space and water system; A rubber asphalt flexible buffer layer (141) is laid on the top of the ecological restoration unit (14) to increase the elastic modulus and reduce movement impact.

6. Construction method of the under - crossing diversion system for urban road water bodies based on modular design, applied to the under - crossing diversion system for urban road water bodies based on modular design according to any one of claims 1 - 5 above, characterized in that: The construction steps include: S1. Geological adaptability design: Use geological radar to conduct a comprehensive scan of the geology under the road to obtain geological structure data with centimeter-level accuracy. Combined with karst pipeline detection technology, the location, direction, diameter and other parameters of the karst pipeline are accurately determined. Based on these data, a detailed three-dimensional geological model is generated to analyze the factors of groundwater flow direction and stratum stability. For areas with fault zones or alternating soft and hard strata, the model is used to simulate the stress and diversion conditions under different module layouts to determine the most suitable arrangement and installation angle of the water body underpass diversion prefabricated unit (1), ensuring the stability and diversion effect of the entire diversion system under complex geological conditions. S2. Module prefabrication and optimization: In the prefabrication factory, the water body underpass diversion prefabricated units (1) are produced according to the design requirements; high-precision molds and advanced production processes are used to ensure that the dimensional error of each unit is controlled within ±3mm; During the prefabrication process, the diversion unit (11), the filtration unit (12), the sedimentation unit (13) and the ecological restoration unit (14) are manufactured in an integrated manner; and based on finite element analysis software, the stress distribution of the modules under different assembly sequences and stress conditions is simulated, the structural design is optimized, the strength of key parts is strengthened, and the shape and size of the connection interfaces are adjusted; At the same time, the drawer-type structure of the filter unit (12) is optimized to make it easier to replace and maintain, and the regeneration function module of the activated carbon layer (124) is tested and debugged to ensure that its electrochemical oxidation technology can operate stably; S3. Diversion tunnel construction: Use excavation equipment suitable for different geological conditions, such as earth pressure balance shield machines in soft soil strata and rock tunnel boring machines in hard rock strata; During the excavation process, the excavation direction and slope are strictly controlled, with the excavation direction deviation controlled within ±10mm and the slope error controlled within ±0.1%. A geological review is conducted every 5-10 meters of excavation, and the excavation parameters are adjusted according to the actual geological conditions. At the same time, the module positioning rails are installed synchronously. The installation accuracy of the rails is controlled within ±2mm for horizontal deviation and ±3mm for vertical deviation, providing precise positioning for the installation of subsequent modules. After excavation is completed, the tunnel is initially supported to ensure its stability. S4, module assembly and sealing: Use a crane to lift the prefabricated water body underpass diversion prefabricated unit (1) into the tunnel and assemble it according to the design sequence; During the splicing process, high-precision measuring instruments are used to ensure that the docking error of adjacent units does not exceed ±5mm. Hydraulic devices are used to assist in the connection, and the flange-type snap-on structure is tightly connected to ensure a firm connection. Embed adaptive rubber sealing rings at the joints to ensure sealing and prevent water leakage; inject epoxy resin sealant, with the injection amount accurately calculated based on the joint size to ensure a uniform and full glue layer. After injection, perform curing and curing. The curing time is determined by the ambient temperature and the characteristics of the glue, and is generally not less than 24 hours. After installation is completed, the connection parts shall be tested for sealing to ensure that the waterproof level meets the design requirements; S5. Intelligent System Integration: During the installation of each module, synchronously lay the Internet of Things sensor network. Install the flow sensor, water quality analyzer, and blockage warning device at the designated positions. The flow sensor is installed at the key positions of the diversion unit (11) to ensure accurate measurement of the water body flow with an accuracy of ±2%; The water quality analyzer is installed at the filtration unit (12) and the water outlet position to monitor the water quality changes in real time; the blockage warning device is installed at the parts prone to blockage, and transmits the sensor data to the cloud control platform through the 5G communication module for data integration and analysis on the platform; Use digital twin technology to build a virtual diversion system model, and compare and optimize it with the actual system in real time to ensure the accuracy and reliability of the intelligent monitoring system; S6. System Commissioning and Testing: After completing the module assembly and intelligent system integration, conduct a comprehensive commissioning of the entire diversion system, inject simulated sewage and rainwater into the system, and test the diversion capacity of the diversion unit (11), the purification effect of the filtration unit (12), the sediment deposition and cleaning function of the sedimentation unit (13), and the ecological purification capacity of the ecological restoration unit (14); Check the operation of the intelligent monitoring system, verify the data accuracy and transmission stability of the flow sensor, water quality analyzer, and blockage warning device, and promptly adjust and repair the problems found to ensure that all performance indicators of the system meet the design requirements; Conduct multi-condition tests, including tests under different flow rates, different pollutant concentrations, etc., simulate extreme weather and special working conditions to ensure the stable operation of the system under various circumstances; S7. Post-maintenance and Monitoring: After the system is put into use, establish a regular maintenance system; according to the real-time monitoring data of the sediment deposition volume in the sedimentation unit (13), when the deposition volume reaches the warning value, start the intelligent dredging robot for dredging operations; Use blockchain technology to record construction data, operation and maintenance records, and environmental monitoring information to ensure the immutability of data; regularly check and replace the drawer-type filter layer of the filtration unit (12), and maintain and service the regeneration function module of the activated carbon layer (124); At the same time, through the cloud control platform, monitor the operation status of the system in real time, promptly discover and handle potential problems, and ensure the long-term stable operation of the urban road water body underpass diversion system.

7. The construction method of the urban road water body underpass diversion system based on modular design according to claim 1, characterized in that: In the S1 geological adaptability design step, the obtained geological data is encrypted using the AES-256 standard encryption algorithm to prevent data leakage and tampering, ensure the security of the geological data, and provide a reliable basis for subsequent design and construction.

8. The construction method of the urban road water body underpass diversion system based on modular design according to claim 1, characterized in that: In the S3 diversion tunnel construction step, adopt environmentally friendly dust reduction and noise reduction measures; by setting up spray dust reduction equipment, reduce the dust concentration at the construction site by more than 80%; adopt low-noise tunneling equipment and sound insulation barriers to control the construction noise within the urban environmental noise standard.

9. The construction method of the urban road water body underpass diversion system based on modular design according to claim 1, characterized in that: In the S7 post-maintenance and monitoring step, use big data analysis technology to deeply mine the long-term accumulated operation data; and by analyzing the change trends of data such as flow rate, water quality, and sediment deposition volume, predict possible faults and problems of the system, and formulate maintenance plans and emergency plans in advance.

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