102 results about "Subsurface drainage" patented technology

The invention discloses an intelligent underground drainage pipe network management method and system, and relates to the field of drainage pipe network management, and the method comprises the steps: obtaining the real-time liquid level and real-time flow of an upstream monitoring point of a target pipe section; dividing the monitoring data into water rising time period data and water recession time period data; two-way resistance characteristic analysis is conducted on the liquid level-flow model, resistance release characteristics and resistance recovery characteristics are recognized, and the resistance release characteristics are that when the liquid level at the water rising time period or the water rising and recession junction reaches a first threshold value, the flow is sharply increased, and the liquid level is stagnated in rising amplitude or suddenly changed in falling; the resistance recovery characteristic is that the liquid level rebounds and rises when the flow is reduced to a second threshold value in the water recession period; when the two types of features are detected at the same time, it is preliminarily judged that soft intermittent blockage abnormity exists in the target pipe section; and generating a flexible dredging management work order based on a judgment result, and updating an asset state mark in a pipe network operation and maintenance database. The method solves the problem that it is difficult to timely and accurately identify the soft intermittent blockage abnormity and carry out linkage operation and maintenance disposal.

The invention discloses an industrial park-oriented pollution accident traceability and risk intelligent prediction system, and relates to the technical field of park pollution prediction, and the system comprises a pollution data collection module which is used for arranging a water quality monitoring terminal in an industrial park factory area, collecting pollution data, and forming structured pollution data; the hydrological structure modeling module is used for constructing a hydrological network diagram structure based on the physical connection relationship between the park underground drainage system and the surface water body and outputting a directed graph; and the pollution path calculation module is used for calculating propagation paths of pollutants on the possible paths and theoretical propagation time corresponding to the paths on the basis of the directed graph structure output by the hydrological structure modeling module. According to the method, a full-path modeling process of pollutants from a discharge source point to a water body diffusion terminal is broken through by constructing a double-drive coupling model, and the model supports dynamic prediction of pollution paths and influence areas under different hydrological situations and process characteristics.

The invention discloses an improved Faster R-CNN underground drainage blow-off pipeline defect detection model, and particularly relates to the field of target detection, and the method comprises the steps: firstly constructing a defect image data set, extracting a defect-containing image from a pipeline detection image, and dividing the defect-containing image into a training set, a verification set and a test set according to a preset proportion after validity screening and defect category labeling; secondly, improving a detection model, replacing a traditional regional proposal module with an anchor-frame-free detection head, embedding an attention module in a high layer of a backbone network, and introducing a feature pyramid network to generate multi-scale features; then training the model, performing multi-graph splicing type data enhancement on a training set, training by adopting an optimizer and a two-stage loss function, and storing an optimal weight in combination with an early stop strategy; and finally evaluating the model, inputting the test set to obtain a detection result, counting related detection data, calculating a precision index, and comparing the precision index with a preset threshold to judge whether the model reaches the standard. The method is high in detection precision and high in adaptability, and meets the requirement for pipeline defect detection.

The utility model discloses a water stop valve used for construction engineering underground drainage engineering, and particularly relates to the technical field of water stop valves, the water stop valve comprises a valve body and two connecting pipes, the inner cavity of the valve body is divided into a water stop cavity and an air cavity, and the side surfaces, far away from each other, of the outer surfaces of the two connecting pipes are respectively provided with a fixing assembly. A sealing assembly communicated with the air cavity is arranged at the top end of the valve body, and a valve clack is installed in an inner cavity of the water stop cavity. According to the water stop valve used for the underground drainage engineering of the construction engineering, the connecting pipes at the two ends of the valve body are connected with drainage pipes with different calibers in a clamped mode through the fixing assemblies, and then gaps between the drainage pipes and the two connecting pipes are sealed through the sealing assemblies; in this way, when drain pipes with different calibers can be clamped and installed through the device, potential fault hazards such as water leakage and loosening can be avoided, and the adaptability of the device to building of complex drain pipelines is greatly improved.

The invention provides an underground pipe network detection positioning method and device, and the method comprises the steps: obtaining the multi-source data of an underground pipe network of a to-be-detected point and the surrounding environment, including ground image data, inspection well internal image data, adjacent inspection well spacing data, ground elevation data, pipe bottom elevation data, and position coordinates; inputting the ground image data into a semantic segmentation network, and outputting a ground semantic segmentation image; respectively extracting contours of the ground semantic segmentation image and the image data in the inspection well to obtain a first edge image and a second edge image; constructing a pavement information measurement model; pipeline diameter information, pipeline gradient and rain and sewage pipeline mixed connection conditions are determined; and integrating the pavement information measurement model, the first edge image, the second edge image, the pipeline diameter information, the pipeline gradient and the like, and drawing a planar graph and an elevation graph of the underground drainage pipe network. According to the method, high-precision detection and positioning of the underground pipe network are remarkably improved, and the method is suitable for city updating and city informatization construction.

The application provides a pick-up type underground groundwater level control device, which comprises a receiving box and a machine box buried in a pit, a top end of the receiving box is detachably provided with a cover plate, a top end of the cover plate is provided with a water filling opening assembly, an inside of the receiving box is provided with a rainwater filtering and storing assembly, a top end of the rainwater filtering and storing assembly is provided with a surface water detection assembly protruding above the ground, the machine box is provided with a drainage mechanism for pumping rainwater in the receiving box, a water outlet end of the drainage mechanism is connected with an underground drainage pipeline, an inside of the machine box is provided with a liquid level jump mechanism for controlling opening and closing of the drainage mechanism according to a water level in the receiving box, a power supply for supplying power to the device as a whole and a controller for controlling operation of the device as a whole. The application can collect rainwater, adjust water storage capacity, effectively filter rainwater, discharge excess rainwater into the underground drainage pipeline and automatically monitor whether to perform greening belt irrigation and the like.

The application relates to the technical field of soil remediation, in particular to a saline-alkali soil improvement system and an improvement method thereof. The system comprises an underground drainage unit, a horizontal pipe network of which can be moved to dynamically adjust the salt drainage layout; an above-ground irrigation and salt suppression unit, which adopts drip irrigation under the membrane and integrates the liquid amendment injection function; a soil information monitoring unit, which is used for distributed monitoring of multiple parameters such as soil salt content and humidity; and an integrated management platform, which receives monitoring data and intelligently controls the coordinated operation of irrigation, drainage and amendment application; the application realizes real-time sensing, intelligent decision-making and dynamic precise regulation and control of soil water and salt movement, solves the problems of fixed drainage layout, extensive regulation and control and non-durable effect in the traditional improvement technology, and significantly improves the efficiency and sustainability of saline-alkali soil improvement.

The invention discloses a water seepage and drainage system for constructing a sponge city, and belongs to the technical field of water seepage and drainage systems, the water seepage and drainage system comprises a water seepage and drainage unit and a water storage unit, the water seepage and drainage unit comprises underground drainage tanks and cover bodies, the cover bodies are installed at the tops of the underground drainage tanks respectively, and each cover body is provided with a seepage hole; a water pump for discharging water from the underground drainage tank is arranged in the underground drainage tank; the water storage unit comprises a reservoir, the reservoir is provided with a plurality of sets of communicating pipelines in one-to-one correspondence with the underground drainage tanks, communicating openings are formed in the side walls or the bottoms of the underground drainage tanks and communicate with the reservoir through the communicating pipelines, opening and closing assemblies are arranged in the underground drainage tanks, and the communicating openings are closed by the opening and closing assemblies in the normal state. When the water level of the underground drainage tank reaches a preset high level, the opening-closing assembly opens the communicating opening. The method has the advantages that dynamic changing rainfall characteristics can be conveniently and flexibly handled, and the utilization efficiency of rainwater recycling and the disaster prevention reliability are improved.

The invention discloses a low-carbon light assembly type central drainage ditch, and particularly relates to the field of drainage ditches, the central drainage ditch comprises a main box, and the central drainage ditch is installed through the following steps that firstly, the left side, the right side and the bottom side of a ditch body are sequentially poured and formed through concrete; secondly, the three plates on the left side, the right side and the bottom side are assembled to form a trench body, and the plate thicknesses of the cover plate and the trench body can be determined according to the span and height requirements; and thirdly, a cover plate is manufactured, and the multiple layers of plate-shaped structures are connected. Through the design of the assembled ditch capable of adapting to underground and earth surface scenes after deformation, the assembled ditch can be independently used as an underground drainage ditch or an earth surface water collecting ditch or used as an underground drainage ditch and an earth surface water collecting ditch in a time-sharing manner.

The utility model relates to the technical field of underground drainage equipment, and provides a pressure-limiting anti-floating drainage structure for underground engineering, which comprises a drainage component, the drainage component comprises a drainage base, a drainage groove and guide plates, the drainage groove is arranged in the drainage base, and the guide plates are fixed on the outer walls of two sides of the top of the drainage base. Through the arrangement of the pressure relief structure, after water flow enters the drainage groove, the water level in the drainage groove gradually rises, the water pressure gradually increases, and then under the action of pressure, the water flow enters the pressure relief cavity through the communicating pipe and is drained into the water storage cavity through the drainage hole; and then the water flow is re-drained into the drainage groove through the water pump and the drainage pipe, in the process, pressure relief can be conducted on the water flow, the situation that the water level rises when the water flow flows, large buoyancy is generated, and the drainage structure is damaged is avoided, the pressure limiting and anti-floating functions of the device are achieved, and the service life of the pressure limiting and anti-floating drainage structure is prolonged.

The application discloses an urban waterlogging intelligent prediction method considering sewer pipe silting, constructs a sewer pipe silting considered underground pipe network and two-dimensional surface coupling waterlogging numerical simulation model by using underground drainage pipe network data; by using the stormwater monitoring data of the application area, the constructed underground pipe network and the numerical simulation model are subjected to model calibration and verification; a storm event data set is constructed, and storm events of different rainfall types and different return periods are designed; an urban waterlogging intelligent prediction model is fused by an improved convolutional neural network, a bidirectional long short-term memory neural network and a Bayesian optimization algorithm, a rainfall time sequence of a database is taken as input of the model, a flooded time sequence is taken as output of the model, a training set of the database is used for training and parameter optimization of the urban waterlogging intelligent prediction model; and the rainfall time sequence in the test set of the database is taken as input, and urban waterlogging intelligent prediction under a pipe silting scenario is realized by the constructed urban waterlogging intelligent prediction model.

This application provides a non-stop connection device and method for underground drainage pipelines. The device includes a sealing box, a cutting assembly, a connecting pipe section, and two sets of automatic splicing structures. The sealing box has positioning holes and alignment holes, and is also connected to a drainage channel. The cutting assembly is used to cut off the middle section of the original pipeline. The two ends of the connecting pipe section face the positioning holes and alignment holes, respectively. The outer side of the connecting pipe section has a loading seat that is slidably connected to it and also slidably connected to the bottom surface of the sealing box. The loading seat is driven by a linear drive component, which is connected to the loading seat through a locking structure. The two sets of automatic splicing structures are used to connect the upstream pipe section and the connecting pipe section, and the connecting pipe section and the newly constructed pipeline, respectively. The non-stop connection device and method for underground drainage pipelines provided by this application allows the upstream pipe section to be connected to the newly constructed pipeline through the connecting pipe section, and discharges the liquid from the upstream and downstream pipe sections to the outside of the pipeline well through the drainage channel, ensuring the safety of on-site operations.

This application discloses a rodless pump-based surface power equipment for underground drainage and gas extraction, belonging to the technical field of underground drainage and gas extraction equipment. It includes: a conveying device for pumping power fluid; a drainage control valve, including a valve adjusting component and a valve body with a power fluid inlet, a power fluid outlet, a power fluid exchange port, and a power fluid return port. The power fluid inlet is connected to the conveying device, the power fluid outlet is connected to a pipeline injected into the formation, the power fluid exchange port is used to export a portion of the power fluid and allow it to return, and performs work on another portion of the power fluid exported through the power fluid outlet during the export process; the power fluid return port is used to return the power fluid to its source; and a driving device for actuating the valve adjusting component. When the driving device actuates the valve adjusting component, the valve adjusting component can connect the power fluid inlet to the power fluid outlet and the power fluid exchange port, or only connect the power fluid inlet to the power fluid exchange port, or connect the power fluid inlet to the power fluid outlet, the power fluid exchange port, and the power fluid return port.

The invention discloses an underground drainage pipe network external water infiltration analysis method based on quantum dot spectrum on-line monitoring. The method is used for identifying and quantitatively analyzing rainwater, underground water and tap water mixed in a drainage pipe network. The method comprises the following steps: firstly, arranging quantum dot spectrum water quality on-line monitoring equipment, collecting COD (Chemical Oxygen Demand), conductivity and turbidity, and establishing a dynamic base line of each parameter by adopting a rolling window median method; secondly, calculating a total infiltration proportion based on a COD dilution effect and judging external water infiltration; further identifying and quantifying rainwater infiltration by utilizing the reduction amplitude of the conductivity in combination with a turbidity weight factor; establishing a two-end element mixed model for the non-rainwater part through the residual chlorine concentration and the total alkalinity to solve the infiltration ratio of tap water to underground water; and finally, verifying the accuracy of an analysis result by comparing an ammonia nitrogen concentration predicted value with an actual value. By means of the method, source-divided quantitative analysis of external water infiltration can be achieved, and technical support is provided for accurate management of a drainage pipe network.

The present application relates to geotechnical engineering and underground drainage technical field, disclose a kind of high fill deep anti silt self-cleaning drainage system and method based on pneumatic breathing effect.The system includes drainage pipeline, elastic breathing cover, water-permeable geotextile, gas supply unit, monitoring unit and control unit.Drainage pipeline wall is provided with micropore, elastic breathing cover is sleeved in the outer periphery of pipeline and forms gas passage, and water-permeable geotextile is wrapped in the outermost layer.Monitoring unit real-time monitoring in-pipe flow and / or pipe outside pore water pressure, when monitoring parameter exceeds threshold value, control unit starts gas supply unit and intermittently injects high-pressure gas into gas passage, so that elastic breathing cover generates periodic radial expansion and contraction, and destroys the mud cake structure attached to the surface of geotextile;While high-pressure gas enters the inside of pipeline through pipe wall micropore, and mixed with water to produce gas lift effect, carry out and discharge the deposited sludge in pipe.The present application realizes synchronous cleaning of pipe outside mud cake and pipe inside sludge, without excavation maintenance, intelligent and efficient.

The present invention relates to a method for visualizing an urban drainage system based on a pipe network generalization model. The method constructs a drainage system framework model that expresses the overall spatial distribution of the entire urban drainage system, a drainage system generalization model that reflects the upstream and downstream topological relationships of sewage treatment plants and drainage pumping stations and the relationship between connected trunk pipes and main pipes, and a drainage system topology model that can reflect the layout of the underground sewage system and the flow direction of sewage in the city. Then, based on the drainage system topology model, the method uses two types of geometric forms, points and lines, to schematically and physically express the pipe network relationships in the obtained drainage system topology model, thereby realizing a visual display of the urban underground drainage system, thereby effectively solving the problem of "invisible" and "unusable" urban underground pipe networks, truly and comprehensively reflecting the overall topological relationship and global operating status of the urban underground drainage system, and meeting the spatial display and analysis application needs of various industries and departments in the construction of new smart cities for underground pipeline data.

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.

The utility model belongs to the technical field of old pipeline adjustment and installation, and discloses a connector applied to new and old underground drainage pipelines made of different materials. The connecting joint comprises a connecting pipeline, a flange connecting piece connected to one end of the connecting pipeline and a fastening connecting piece connected to the other end of the connecting pipeline. The flange connecting piece comprises a second flange plate connected with the connecting pipeline, and the second flange plate is connected with a first flange plate arranged on a new pipeline through a connecting bolt. The fastening connecting piece comprises a rubber plate, a fastening plate and a fastening ring which are sequentially arranged on the connecting pipeline in a sleeving mode from inside to outside, and the connecting pipeline is connected with the old pipeline through the fastening connecting piece. By applying the connecting joint provided by the utility model, the problem that the original old drainage pipeline and the newly-built drainage pipe network of the single building are different in material and specification and cannot be directly connected can be effectively solved.

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.

The application discloses a kind of urban underground drainage pipe network problem diagnosis system based on big data analysis, it is related to intelligent pipe network technical field, comprising the following steps: S1, data acquisition and pretreatment;S2, carry out feature fusion, construct feature vector;S3, construct diagnosis model based on machine learning algorithm to identify whether there is abnormality in drainage pipe network;S4, predict the occurrence trend of potential problem;S5, build optimization model to maintain.The application can not only accurately diagnose common problems such as blockage and leakage in pipe network by deeply fusing multi-source data (such as flow, water level, water quality, geographic information, historical maintenance records, etc.), but also predict the occurrence trend of problems in advance using big data mining and machine learning algorithms.The application greatly improves the operation efficiency and safety of the drainage system, and helps to optimize resource allocation and reduce maintenance costs through intelligent analysis, thereby realizing more refined and dynamic management of drainage pipe network.

The utility model provides a landscaping drainage structure, which relates to the technical field of drainage matching components and comprises an upper drainage well lid, a lower fixing base and a middle sealing barrier strip, the upper drainage well lid is mounted at the top of the lower fixing base through a hinge in a matched manner, and the middle sealing barrier strip is arranged on the inner side of the lower fixing base. Side horizontal connecting sliding columns are fixedly connected to the two ends of the middle sealing barrier strip, side connecting sliding frames are horizontally connected to the two ends of the middle sealing barrier strip in a sliding mode, side connecting sliding grooves are formed in the upper portions of the side connecting sliding frames at intervals in an array mode, and lower vertical connecting sliding columns are fixedly connected to the two sides of the bottoms of the side horizontal connecting sliding columns. The drainage through groove and the upper drainage well lid are sealed through the middle sealing barrier strip, dry branches and fallen leaves are prevented from falling into an underground drainage channel along the drainage through groove, and the problems that branches and leaves easily penetrate through grids of the well lid to fall into the drainage channel, and blockage is easily caused due to the fact that the dry branches and fallen leaves gather in the underground drainage channel are solved.

The invention provides a goaf accumulated water drainage system and method based on network monitoring, and relates to the technical field of coal mine water prevention and control. The system comprises a data acquisition module of which a monitoring network is arranged in a goaf and which is used for acquiring water level and water temperature data in real time; the ground water pumping module comprises at least one ground drainage well and is used for pumping accumulated water; the underground drainage module comprises at least one under-pit drainage hole provided with a water control assembly and is used for controllably discharging accumulated water; and a cooperative control module. The cooperative control module is in communication connection with all the modules and is configured to dynamically coordinate operation of the ground water pumping module and the underground drainage module based on the water level data and the water temperature data which are collected in real time and the type characteristics and drainage stages of the goaf. Through integrated monitoring and cooperative control, linkage regulation and control of upward pumping and downward discharging operation are achieved, and the safety, controllability and efficiency of the drainage process of accumulated water in the old goaf are improved.

The invention relates to the technical field of soil preparation and soil remediation, in particular to a saline-alkali soil improvement system and method, and the system comprises an underground drainage unit with a concealed pipe network capable of horizontally moving to dynamically adjust the salt elimination layout; the overground irrigation and salt inhibition unit adopts under-film drip irrigation and integrates a liquid modifier injection function; the soil information monitoring unit is used for monitoring multiple parameters such as soil salinity and humidity in a distributed manner; the integrated management platform is used for receiving the monitoring data and intelligently controlling the collaborative operation of irrigation, drainage and improvement agent application; according to the method, real-time sensing, intelligent decision making and dynamic accurate regulation and control of soil water and salt movement are achieved, the problems that in a traditional improvement technology, drainage layout is fixed, regulation and control are extensive, and the effect is not lasting are solved, and the efficiency and sustainability of saline-alkali soil improvement are remarkably improved.

The invention particularly relates to a vertical drainage pipe integrated system based on a drainage anti-seismic principle, and belongs to the technical field of foundation solidification. The vertical drainage pipe integrated system based on the drainage anti-seismic principle is applied to a liquefiable foundation and comprises a plurality of underground drainage channels, the axes of the underground drainage channels are vertically arranged, a plurality of water seepage holes are formed in the peripheral walls of the underground drainage channels, the underground drainage channels are inserted into the foundation, and inverted filter wrapping structures are arranged on the peripheral walls of the underground drainage channels. And pore water in the soil body can enter the underground drainage channel through the water seepage holes of the underground drainage channel, so that the soil body is solidified, the foundation is settled, the strength of the foundation can be gradually improved, and the earthquake resistance and disaster reduction performance of the foundation is improved.

The present invention is intended to provide an underground culvert system using a non-powered automatic control device for underground drainage / water supply that automatically supplies and cuts off agricultural water into the ground without power according to changes in the groundwater level of agricultural land. Accordingly, the present invention discloses an underground culvert system using a non-powered automatic control device for underground drainage / water supply, comprising: a perforated pipe culvert laid underground and having a plurality of water holes drilled on its perimeter surface to supply water underground; a water supply device that supplies and blocks water flowing in from the outside to the perforated pipe culvert; and a groundwater inflow pipe installed underground in the ground where the perforated pipe culvert is laid and connected to the water supply device.

Even when a lubricant is used to insert drainage pipes into the ground, the reduction in the groundwater collection function caused by the drainage pipes is suppressed. [Solution] A method for installing a drainage pipe in the ground for draining groundwater in the ground, comprising a drainage pipe insertion step in which a lubricant is used when inserting a drainage pipe into the ground to allow groundwater to permeate and collect in the pipe, wherein the lubricant has a predetermined viscosity when the drainage pipe is inserted into the ground, and after the drainage pipe has been inserted into the ground, the predetermined viscosity is reduced by the decomposition performance of organic matter.

The utility model discloses a kind of multifunctional underground drainage pipeline measuring tools, including measuring probe and pipe diameter measuring rod, the scale is formed on the outer wall of measuring probe along its axial direction;The pipe diameter measuring rod includes the connecting rod section of being slidably connected with the one end of measuring probe through limiting sliding part and the measuring rod section being connected with connecting rod section and horizontally arranged, the distance of relative sliding of measuring probe and connecting rod section by limiting sliding part is the diameter of measuring rod section;Compared with prior art, its structure composition is simple, manufacturing cost is low, and the measurement of drainage pipeline pipe diameter has relatively higher accuracy.

The invention discloses a green low-carbon urban non-point source pollution interception and purification treatment device and method. The device comprises a box body, and a filtering assembly, a water retaining assembly and a purification assembly which are arranged in the box body, a confluence box is arranged at the top end of the box body, and the filtering assembly comprises an interception grating arranged on one side of the confluence box and a filtering plate arranged at the joint of the confluence box and the box body; the water retaining assembly comprises a lifting baffle clamped in the box body and a first motor for providing power for the lifting baffle; the purification assembly comprises a first conical hopper clamped at the lower end in the box body, a settling box arranged at the lower end of the first conical hopper and a filler net cage arranged outside the settling box in a sleeving manner; according to the device, suspended solids in rainwater are filtered and intercepted under the combined action of the interception grating, the filter plate and the settling tank, the optimized effect of layered step-by-step filtration is achieved, and the situation that silt and other impurities in the rainwater block an underground drainage pipeline, and consequently the working cost of desilting in the later period is increased is avoided.

The application discloses a kind of green building underground drainage pipeline components, specifically related to drainage pipeline component field, including pipeline main body, the side end surface of the pipeline main body is fixed with adaptive card piece, the inside of the adaptive card piece is fixed with limit card slot, the inside of the limit card slot is equipped with pipeline component, the inside of the pipeline component is equipped with adaptive pad, the middle part of the outer side end surface of the adaptive pad is fixed with connecting plate.The novel in actual use, through the corresponding setting state of the setting adaptive pad, second convex block, first convex block, limit card pad and connecting plate, the stability of the drainage pipeline splicing can be conveniently increased, the stability after the drainage pipeline splicing can be increased, the sealing property of the drainage pipeline splicing can be effectively increased by the material setting state of the adaptive pad, second convex block, first convex block, limit card pad and connecting plate.

1. The name of the design product: municipal drainage inspection well. 2. The use of the design product: for municipal road construction underground drainage, sewage, easy to check, dredging and dredging pipeline. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective drawing.