125 results about "Drainage network" patented technology

The invention relates to the technical field of electronics, and discloses a drainage pipe network pollutant tracing method, device and equipment, a medium and a program product. According to the method, the map similarity between a first three-dimensional fluorescence spectrum map corresponding to a first water sample of a target node and a second three-dimensional fluorescence spectrum map corresponding to each upstream pipe network node is calculated; and determining at least one target upstream pipe network node in the plurality of upstream pipe network nodes based on the map similarity, and determining pollution source information of abnormal water in a target node according to first water quality data of the target upstream pipe network node and second water quality data on a sewage flowing path between the target upstream pipe network node and the target node, the advantages of high sensitivity, rapid detection and the like of the three-dimensional fluorescence spectrum technology are utilized in the pollutant traceability process, and efficient and accurate traceability of pipe network pollutants is achieved.

The invention relates to the technical field of data processing, and discloses a drainage pipe network rain and sewage mixed connection tracing and spatial positioning method for a micro monitoring station network, which comprises the following steps: defining an upstream convergence pipe network range of each micro monitoring station according to a flow direction connection relationship of a drainage pipe network and layout nodes of the micro monitoring stations, establishing a unique mapping relation library between each pipe section and the corresponding multi-stage monitoring topological sequence; obtaining water quality and water level data of a monitoring station, intercepting an analysis time period, and identifying a target monitoring topological sequence which generates a response currently in the mapping relation library based on a time-space propagation association attribute of data between stations; locking an isomorphic mapping candidate pipe section set corresponding to the sequence, and constructing a pollutant source emission inversion model of each candidate pipe section according to a pipe network fluid transport diffusion mechanism; and calculating the fitting deviation degree of the source hypothesis of each candidate pipe section to the monitoring data by using the model, and selecting the pipe section with the minimum deviation degree as a positioning result.

The invention relates to the technical field of soil treatment, in particular to an integrated saline grainfield soil improvement and remediation method. According to the method, precise irrigation, concealed pipe drainage, salt-tolerant crop planting and bioremediation technologies are comprehensively applied, and systematic treatment of the salinized soil is achieved. Precise irrigation dynamically regulates and controls the leaching depth and frequency on the basis of real-time soil salinity and moisture data, the underground water level is intelligently controlled in combination with an underground pipe drainage network, salt accumulation is effectively reduced, and water resource waste is avoided; according to the salt-tolerant crop and green manure rotation mode, salt damage is reduced through plant salt absorption and root system nitrogen fixation, soil organic matter accumulation and microbial community reconstruction are promoted through application of a microbial agent and biochar, and a sustainable soil improvement mechanism is formed. The intelligent monitoring system integrates multiple types of sensors, collects key indexes such as salinity, nutrients and pH values in real time, predicts the salinization trend and regulates and controls irrigation, fertilization and drainage equipment in a linkage mode, full-process automatic management is achieved, and the management precision and efficiency are remarkably improved.

The application discloses a kind of municipal engineering technical field's multi-source data fusion's urban drainage pipe network evaluation method, for evaluating the drainage quality of drainage pipe network in target area, the method includes obtaining the water quantity data of each water treatment system in the first period of target area, water quality data, climate data, tidal data, water quantity corresponding permanent population data, pollution emission background value and low concentration external water three-dimensional fluorescence spectrum.The application is fused to multi-source data, and the water quality and quantity data of influent of sewage treatment plant or pump station are cleaned, the type of influent and seepage external water in sewage treatment plant is distinguished, the problem that current sewage treatment system quality improvement and efficiency evaluation method only focuses on external water quantity evaluation but external water type is not clear is solved, and then the improvement direction of drainage pipe network quality improvement and efficiency is clear, it is helpful to clear the priority of mixed error connection, damage and external water inflow problem in the quality improvement and efficiency range of drainage pipe network.

This invention relates to the diagnosis of sedimentation in drainage networks, specifically providing an unmanned underwater vehicle (UUV) based maintenance decision-making method for drainage pipeline sedimentation diagnosis and waterlogging warning. The UUV of this invention consists of an integrated hull inside the pipeline and a manhole box. The integrated hull inside the pipeline includes a Doppler ultrasound module, a three-axis gyroscope, a high-definition infrared camera, a main controller, a deep learning development board, baffles, a cabin cover, a cabin, fins, towing rings, and a navigation interface. The Doppler ultrasound module, three-axis gyroscope, high-definition infrared camera, navigation interface, and deep learning development board are each connected to the main controller. The fins, towing rings, cabin cover, and baffles are connected to the cabin.

This invention relates to an underground pipeline drainage monitoring system and method based on distributed fiber optic acoustic sensing. The system includes sensing optical fibers deployed along the underground water pipeline, distributed fiber optic acoustic sensing equipment, a preprocessing module for preprocessing received signals, a feature extraction module, a status recognition module, an anomaly tracing module, and a display and early warning module. This invention utilizes sensing optical fibers deployed along drainage manholes and pipe sections to acquire acoustic and vibration responses under different operating conditions during pipeline network operation. It automatically identifies and locates abnormal discharge behavior under rainless conditions, enabling long-distance distributed sensing along the drainage network and is suitable for long-term online monitoring of urban drainage networks.

The present application relates to sewage treatment technical field, especially sewage treatment intelligent monitoring method and system, including: through sensor obtains rainwater collection drainage node's sewage discharge, water quality parameter and drainage point coordinate, and carries out pretreatment. Based on real-time sewage discharge and pipeline design maximum flow rate, the real-time load rate is calculated, the water quality difference between adjacent nodes and the pipeline water quality difference are analyzed, the path distance is calculated combined with the drainage point coordinates, the exponential function is used to comprehensively evaluate the discharge suitability index, the comprehensive dynamic weight is formed by fusing the real-time load rate, and the A algorithm is used to obtain the optimal path. Based on the comprehensive dynamic weight processing conflict, the intelligent selection of the drainage path is realized, and the operation of the drainage network is optimized. The present application optimizes the selection of the discharge path by calculating the water quality difference between the drainage nodes and the pipeline water quality difference, thereby reducing the risk of pollutant diffusion, improving the sewage treatment efficiency and suitability.

The utility model discloses a water conservancy slope protection component, and particularly relates to the technical field of water conservancy slope protection, which comprises rhombic frames and connecting pieces for connecting two adjacent rhombic frames, a plurality of diversion trenches are formed in the bottom wall of the rhombic frame, a plurality of plugs are fixed to the bottom wall of the rhombic frame, connecting plates are fixed to the four corners of the outer side of the rhombic frame, and through holes are formed in the connecting plates; the connecting piece comprises a connecting base, two parallel inserting rods are fixed to the lower side of the connecting base, and the inserting rods penetrate through the corresponding through holes. A plurality of diversion trenches are formed in the bottom wall of the rhombic frame, a plurality of drainage ports are formed in the side wall of the rhombic frame, and the drainage ports and the diversion trenches form a three-dimensional drainage network, so that slope runoff can be quickly dispersed, the problem of soil loosening caused by rainwater accumulation is solved, and meanwhile, the risk of rotting of vegetation roots caused by local water accumulation of a traditional slope protection can be avoided.

1. Name of the product in this design: Drainage Pipeline Monitoring Instrument. 2. Application of this design: This design is used for real-time water quality measurement, flood prevention and early warning, water pollution monitoring, and investigation of mixed rainwater and sewage connections. 3. The key design elements of this product are its shape, pattern, and their combination. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a deep tailing pit one-time filling vacuum preloading collaborative consolidation system and a construction method. The system is composed of a multi-layer rigid horizontal drainage network, a vacuum preloading sealing treatment device and a drainage network dynamic intelligent adjusting device in a cooperative mode. The drainage network is composed of geogrids and drainage plates fixed to the geogrids, and an anti-deformation horizontal drainage framework is formed. The dynamic adjusting device can monitor and actively adjust the elevation and form of each layer of drainage network in real time in the whole process of one-time filling of tailing mud and subsequent vacuum preloading through a vertical rod, a pull rope motor, a tension sensor and a lifting rope, and it is ensured that a drainage channel is always unblocked. The problems that after the deep pit is filled at a time, a drainage system is prone to failure, and consolidation is slow are solved, rapid, uniform and controllable efficient consolidation is achieved, the period is remarkably shortened, and the stability of a backfill body is improved.

The invention discloses an overflow frequency control-oriented drainage system closure multiple calculation method, which comprises the following steps of: firstly, acquiring multi-year rainfall data of a research area, and dividing rainfall events according to a certain time interval; arranging the rainfall events according to the maximum rainfall intensity or net rainfall intensity; secondly, according to the overflow frequency control requirement of the overflow port, the rainfall intensity or net rain intensity limit value corresponding to the overflow frequency reaching the standard is counted; then, determining a dry season flow reference value of the section of the overflow port; and finally, the rainfall intensity or net rain intensity limit value is divided by the dry season flow characteristic value, and the interception multiple required for reaching the standard is calculated. The method has application value in the scenes of quality and efficiency improvement and water body environment protection of drainage pipe network systems such as combined system drainage system transformation, rainwater and sewage mixed connection or misconnection pipeline improvement and the like. And establishing a quantitative relationship between the overflow frequency of the overflow port and the interception multiple, and calculating the interception multiple required by the overflow port for reaching the standard, thereby providing a decision basis for black and odorous water body treatment and water body environment protection.

This utility model relates to the technical field of charging pile auxiliary equipment, and in particular to an auxiliary device for flood control and drainage slope at the bottom of a charging pile. It includes a base, with a first symmetrical drainage channel at the bottom, a second symmetrical drainage channel in the middle, and third drainage channels on both the left and right sides. All three drainage channels are inclined. This utility model introduces a three-stage drainage channel structure, combined with drainage channels, to form a three-dimensional drainage network from top to bottom. This network can operate effectively under different rainfall intensities. Each drainage channel functions sequentially according to actual needs, guiding rainwater out step by step. This utility model replaces the cement base of the charging pile, fixing it to the foundation with bolts. The charging pile is then installed and fixed on two sets of this device. The easy assembly and disassembly design significantly shortens installation time, allowing the charging pile to be put into use in a shorter time, greatly improving the efficiency of infrastructure construction.

The invention discloses a whole watershed rain disaster prevention system, which belongs to the field of water conservancy disaster prevention and relief, and can select a water retaining structure authorized by an applicant or other suitable water retaining structures as a basis, match with an existing modular plug-in type water retaining plate, depend on original water conservancy facilities such as river channels, trunk canals and branch canals, and fuse big data, communication and automation technologies. A three-level disaster prevention system of a water retaining device, a drainage basin stagnation point and a water regime monitoring and processing center is constructed, and an inside-city disaster prevention subsystem and an outside-city disaster prevention subsystem are arranged. A three-layer drainage system of canopy rain shielding and water guiding, water retaining device canal forming and sewer pump station water pumping is constructed in a city, water retaining devices are arranged in a smooth zone in advance according to flood control standards and topographic contour lines outside the city, a stepped water storage area is formed, and the drainage link is divided into three-level drainage networks of rivers, main canals and branch canals. According to the system, the water regimen monitoring and processing center is used for realizing all-basin collaborative scheduling and is deeply bound with four pre-mechanisms of a weather bureau and an emergency management bureau, so that the management method is technologically integrated; the water retaining device can be quickly laid and detached without residues, and the modularized water retaining plate can be pulled out to adjust the water storage amount and is connected with the flexible water retaining device. The system is low in cost and fast in deployment, replaces traditional sandbag layout, can greatly improve efficiency, can form million-magnitude water storage and drainage units in a short time, has emergency guarantee for extreme working conditions, has ecological and economic values, can effectively cope with drainage basin heavy rain and rainstorm disasters, reduces loss to the maximum extent, and has wide popularization and application values.

The invention discloses a coupling coordination degree evaluation method and system based on a hydrological environment, drainage and waterlogging prevention facilities and a social system, and belongs to the field of system coupling coordination degree evaluation systems under the background of urban waterlogging. From two analyses, the first criterion layer of the hydrological environment system is rainfall, terrain and water permeability, and the second index layer is annual rainfall, gradient and comprehensive runoff coefficient. The drainage and waterlogging prevention facility system criterion layer is drainage facility and emergency rescue accessibility, the drainage facility index layer is drainage pipe network density, drainage pipe network capacity, pump station capacity and discharge passage density, and the emergency rescue index layer is fire-fighting emergency rescue accessibility. The criterion layer of the social system is economic and safety requirements, the index layer of the economic layer is total citizen production value and house price, and the indexes of the safety requirements are population density, schools and hospitals. And an index weight is calculated by adopting a subjective weight determination method and an objective weighting method, the collaborative development degree of the three systems is quantified, and quantitative evaluation of the coupling coordination degree of the three systems in the region is realized.

This invention relates to the field of building construction technology. To address the technical problem of anti-buoyancy in underground structures under complex hydrogeological conditions, this invention discloses a dual-control system based on drainage anti-buoyancy and dynamic balance of underground buoyancy. The system includes a drainage unit located below the basement floor slab, comprising a drainage ditch or drain pipe to collect and divert groundwater; a sump well connected to the drainage unit to collect the collected groundwater; a drainage pipeline connected at one end to the sump well and at the other end to a rainwater storage tank or municipal drainage network to discharge the groundwater from the sump well; a submersible pump installed in the sump well to discharge groundwater through the drainage pipeline; and an automatic control device electrically connected to the submersible pump to automatically start and stop the pump based on the water level signal in the sump well. The anti-buoyancy control water level of the system is set below the level that can be balanced by the structure's self-weight and additional loads, achieving dual anti-buoyancy control through a combination of structural self-weight, additional loads, and active drainage.

This application relates to the general field of urban drainage technology, specifically to a method for identifying key nodes in a drainage network for predictive improvement. The method includes: randomly partitioning nodes in a target dataset of the target drainage network based on a preset target missing rate to obtain a subset of monitored nodes and a subset of unmonitored nodes; obtaining hydraulic state data of nodes in the monitored node subset from the target dataset, and inputting the hydraulic state data into a trained hydraulic prediction model to obtain predicted hydraulic state data of nodes in the unmonitored node subset; calculating the contribution of nodes based on the predicted hydraulic state data, and determining the global importance of nodes in the target drainage network based on the contribution; and selecting key nodes of the target drainage network at the target missing rate from the target dataset based on the global importance of nodes in the target drainage network.

The application discloses a kind of urban drainage pipe network hydraulic parameterization modeling methods of fusion pipeline CCTV defect information, comprising: obtaining pipeline CCTV detection and drainage pipe network basic data, extracting defect type, level, spatial position and influence range and other structured information;Combined with pipe network topological relationship, defect is mapped to corresponding pipe section or node, the length proportion of defect is calculated, the comprehensive influence coefficient of multiple defects and node spatial influence coefficient;According to the hydraulic action characteristics of defect, effective flow capacity, local hydraulic loss and node response influence model are constructed, and defect influence parameter set is formed;Based on the parameter set, the cross-sectional area of pipe section, equivalent pipe diameter, local hydraulic characteristic parameter, water offset and node hydraulic parameter are corrected, and multiple defect coupling calculation is carried out;The validity of the corrected parameter is verified by inputting into one-way coupling model.The application realizes the quantitative mapping of CCTV defect information to drainage pipe network hydraulic parameter, and improves the characterization ability and applicability of the model to actual defect state.

This invention discloses a channel-type slag heap diversion structure, relating to the field of hydraulic engineering, particularly to the field of slag retaining dams. The aim is to ensure the long-term safety and reliability of the diversion structure itself and to improve the stability and safety of the slag heap. The technical solution adopted in this invention is as follows: a channel-type slag heap diversion structure, with slag stockpiled within a natural gully. A main blind ditch is located at the bottom of the natural gully along its upstream and downstream directions. Branch blind ditches are located on both sides of the main blind ditch, with their outlets connected to the main blind ditch. Drainage piles are also arranged at intervals within the slag heap to form a slag heap drainage network. The main blind ditch, branch blind ditches, and drainage piles are all permeable fillers covered with a filter layer and embedded within the slag heap. A diversion tunnel structure is also located within the slag heap along the upstream and downstream directions of the natural gully. The diversion tunnel structure includes a cushion layer, a lining, and a consolidation body. The inner side of the lining is the diversion tunnel, and the outer side of the lining is the consolidation body formed by grouting reinforcement into the slag heap. This invention is used to construct slag heaps within natural gullies.

The invention provides a watershed urban water system multivariate spatio-temporal data integration and topology analysis method based on a graph database. The watershed urban water system multivariate spatio-temporal data integration and topology analysis method comprises the steps of multivariate data integration, graph database construction, multi-source data hooking and topology analysis and data verification. Integrating meteorological monitoring, river pipe network monitoring, water supply and other multivariate data, and constructing a distributed database through space-time alignment and deep fusion; pipe network GIS data is converted into a graph database model, nodes represent entities such as inspection wells, and edges represent connection relations such as pipelines; the drainage partition and monitoring equipment data are hooked through the joint index to form a complete data network; and running a quality balance algorithm to verify the data, and outputting a pipe network health report. The method solves the problems of data islands, poor relevance and low topological analysis efficiency of a traditional relational database, supports efficient query of complex topological relations, is high in data fusion and verification capability, is suitable for urban drainage network, river management and comprehensive water environment treatment, and effectively improves the implementation effect of a large water environment treatment project.

The utility model discloses a three-dimensional composite drainage net which comprises a fixing frame with an upper opening and a lower opening, a drainage bottom plate is fixedly installed at the bottom of the fixing frame, an adjusting plate is arranged in the fixing frame in a sliding mode, drainage grooves are evenly formed in the drainage bottom plate and the adjusting plate, penetrating holes are formed in the two sides of the top of the fixing frame in a pairwise corresponding mode, and the penetrating holes are communicated with the adjusting plate. An inserting hole is formed in the position, opposite to the penetrating hole, of the adjusting plate in a penetrating mode, the inserting hole is located below the penetrating hole, and a fixing assembly is arranged on the penetrating hole; the fixing assembly comprises an inserting rod and a spring, the bottom of the inserting rod is movably inserted into the penetrating hole and the inserting hole in sequence, one end of the spring is fixedly arranged at the top of the inserting rod, the other end of the spring is fixedly arranged on the top wall of the fixing frame, and the inserting rod is used for fixing the adjusting plate in the fixing frame. The utility model belongs to the technical field of drainage nets, and particularly relates to a three-dimensional composite drainage net.

The present application belongs to the technical field of hydrodynamics and environmental engineering, and provides a kind of simulation method for water quantity and quality of piedmont plain type town area considering rainwater grate diversion, and the main steps include: basic database construction, catchment unit division, rainwater grate determination, drainage channel generalization and key process numerical calculation.The present application considers the influence of surface runoff velocity and terrain slope on rainwater grate diversion, corrects and establishes the diversion calculation formula of different types of rainwater grates, improves the accuracy of rainwater grate diversion calculation, and overcomes the subjective definition of hydraulic connection between surface runoff and drainage network in traditional method;At the same time, the present application considers the function of piedmont plain city land distribution, establishes a surface catchment unit division method based on landscape pattern, can accurately represent the influence of hydraulic connection between land use types, microtopography and other factors on surface runoff and pollution output, and overcomes the subjectivity and singleness of traditional methods such as thiesen polygon and road cutting method.

This utility model discloses a large construction waste block grabbing device for park drainage pipe networks, including a supporting tripod, on which a probe is slidably mounted. A connecting seat is detachably connected to the front end of the probe, and an installation head is provided at the front end of the connecting seat. Multiple grabbing claws are elastically mounted at the front end of the installation head. The rear ends of each grabbing claw are rotatably mounted within the same ring, which is slidably mounted on the installation head. A sliding ring assembly is slidably connected to the rear end of the ring, which is slidably mounted on the connecting seat. The sliding ring assembly can drive the ring to slide, thereby controlling the opening and closing of each grabbing claw. An opening and closing control rod is detachably connected to the rear end of the sliding ring assembly, and the opening and closing control rod is slidably connected to the supporting tripod. This utility model can penetrate deep into the pipe to ensure stable grabbing. It can adapt to waste blocks of different shapes and sizes, has strong adaptability, and the grabbed waste blocks are not easily scattered or slipped, eliminating the need for manual cleaning, avoiding safety hazards, and improving cleaning efficiency.

The application relates to the technical field of data processing, and discloses a rain and sewage mixed connection tracing and spatial positioning method for a drainage pipe network of a micro monitoring station network, which comprises the following steps: according to the flow connection relationship of the drainage pipe network and the layout nodes of the micro monitoring station, the upstream confluence pipe network range of each micro monitoring station is defined, and a unique mapping relationship database between each pipe section and the corresponding multi-level monitoring topological sequence thereof is established; water quality and water level data of the monitoring station are acquired, and an analysis time period is intercepted; based on the space-time propagation correlation attribute of the data between the stations, a target monitoring topological sequence currently producing a response is identified in the mapping relationship database; a homomorphic mapping candidate pipe section set corresponding to the sequence is locked, and a pollutant source discharge inversion model of each candidate pipe section is constructed according to the fluid transport and diffusion mechanism of the pipe network; the model is used to calculate the fitting deviation degree of each candidate pipe section source hypothesis to the monitoring data, and the pipe section with the minimum deviation degree is selected as the positioning result.

The utility model discloses a kind of upper ditch lower culvert road drainage devices, it includes drainage gallery, box culvert, overflow pipe and water collecting pipe, drainage gallery is located between non-motor vehicle lane and motor vehicle lane, vegetation shallow ditch is formed under the concave of drainage gallery, and the highest of drainage gallery is lower than the height of non-motor vehicle lane and motor vehicle lane, box culvert is located below drainage gallery;One end of overflow pipe extends into box culvert, overflow pipe passes through drainage gallery to make the other end of overflow pipe extend into vegetation shallow ditch;Water collecting pipe is buried in drainage gallery, water collecting pipe has water collecting mouth, and water collecting pipe is communicated with overflow pipe.The utility model uses road median strip space arrangement drainage gallery, construction only needs shallow layer excavation, avoid affecting carriageway structure.Box culvert, overflow pipe, water collecting pipe combination form three-dimensional drainage network to replace traditional deep buried pipe network, when maintaining, can be directly operated through gallery area, without interrupting traffic.

This invention disclosed a full-space intelligent detection method and system for underground drainage networks, as well as storage media, including the following steps: image acquisition, intelligent image denoising, internal pipe defect segmentation, concealed defect detection around the pipe, 3D reconstruction with volume quantification, and pipeline life prediction. This invention introduced a bionic four-wheel-drive, all-terrain detection robot that can effectively navigate through mud and flowing water-challenges that hinder traditional detection devices. By leveraging deep learning algorithms as well as various techniques of computing vision, 3D reconstruction, and point cloud processing, the system thoroughly analyzed collected data to determine defect types and precise locations. Utilizing this analysis, precise location of different defect type and quantitative measurement of their dimensions can be realized. Based on the data analysis results, a deep-learning driven model was developed for predicting pipeline longevity to support maintenance staff with timely information on pipe defects and operational lifespan.

1. The name of the design product: wireless manhole radar liquid level meter. 2. The use of the design product: for monitoring the liquid level height in underground drainage network, manhole and other facilities. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention discloses a method for predicting wastewater volume and heavy metal flux in watershed mining projects, belonging to the field of mining area environmental pollution simulation and water resource management. This invention achieves dynamic collaborative simulation of wastewater generation, collection, treatment, and discharge processes by constructing a framework coupling a distributed hydrological model with the mining area's water supply and drainage network. Furthermore, it introduces a quantile gradient boosting regression algorithm to correct the residuals of the physical baseline simulation results, thereby improving prediction accuracy under low-frequency monitoring conditions. This invention can effectively characterize the spatiotemporal coupling relationship between rainfall-runoff generation processes and engineering operations, and has significant application value in mining wastewater discharge control, heavy metal pollution prevention and control, and engineering decision support.

The invention discloses an upstream urban drainage network pipe water outlet submerging detection structure which comprises a fixing support, a mounting sleeve is mounted on the fixing support through a fixing bolt, and an adjustable multi-point synchronous detection structure is mounted on the mounting sleeve; the invention relates to the technical field of water level detection equipment, and has the beneficial effects that the problems that the existing water outlet detection method generally adopts a single sensor or a fixed buoy, so that the detection precision is low, the adaptability is poor, the maintenance is difficult and the like, the single sensor detection is easily influenced by water flow and sundries, and the water level cannot be detected in a complex water flow environment are solved; the problems that inaccurate water level data may be generated by a single detection point due to local vortex or water flow fluctuation, a reliable basis cannot be provided for drainage scheduling, and floating type detection cannot accurately measure the water level due to the fact that a buoy cannot be fixed and is driven and impacted by water flow, and is only suitable for calm water level detection, and misjudgment is easily caused are solved.

The invention provides a drainage pipe network defect detection method and system, and the method comprises the steps: carrying out the mesh generation of a plurality of different drainage pipe network models, and carrying out the densification of the defects on the drainage pipe network models; performing fluid simulation processing on the densified drainage pipe network grid model, and calculating a fluid simulation result of a defect-free pipeline; comparing a fluid simulation calculation result of a defective pipeline with a fluid simulation result of a non-defective pipeline, extracting image features of the processed standardized drainage pipe network defect data set, and extracting depth information of the image features through a double-checking and screening strategy; and designing a detection framework, detecting the depth information based on the detection framework to obtain a defect detection result, and matching the defect detection result with the comparison difference to confirm the defect type and the defect position. According to the invention, the pipe network can be comprehensively detected without being limited by the environment, and the detection precision and comprehensiveness are effectively improved.

The invention discloses a tunnel drainage device which comprises a side ditch and a main ditch and further comprises two first longitudinal blind pipes, two second longitudinal blind pipes and a drainage pipe, the two first longitudinal blind pipes are arranged on the two sides of a tunnel respectively, and the two first longitudinal blind pipes are arranged between a tunnel primary support and a tunnel secondary molded lining; the multiple longitudinal blind pipe outlets are formed in the first longitudinal blind pipe in the extending direction of the tunnel at intervals, and the longitudinal blind pipe outlets communicate with the side ditches; and the transverse drainage blind pipes are arranged at intervals in the extending direction of the tunnel, one ends of the transverse drainage blind pipes communicate with the side ditches, and the other ends of the transverse drainage blind pipes communicate with the main ditches. Underground water permeating into the back of a tunnel secondary molded lining in a tunnel primary support is collected through the first longitudinal blind pipe, a drainage network is formed through the multiple longitudinal blind pipe outlets, the side ditches, the multiple transverse drainage blind pipes and the main ditch, and even if the main ditch is blocked at a certain position, water can bypass to other channels through grids to be drained; and the reliability and the fault-tolerant capability of the system are greatly improved.