262results about How to "Reduce waterlogging" patented technology

The present invention discloses a low elevation greenbelt rainwater regulation scheduling pool and a distributed rainwater regulation scheduling pool system. The distributed rainwater regulation scheduling pool system comprises a low elevation greenbelt (1), a rainwater overflow well (2) and a rainwater regulation scheduling pool (7), and water storage, drainage and supply which are integrated with a rainwater pipe network or a sewage pipe network are achieved. Compared with the prior art, rainfall runoff and flood detention can be effectively adjusted, runoff pollution can be reduced, and purification, storage and utilization functions of rainwater are fulfilled; and the system is tightly combined with the rainwater and sewage pipe networks of a city, the problems of urban inland inundation caused by rainstorm, the runoff pollution caused by rain wash, and rainwater resource utilization are solved, water storage is scheduled according to drainage ability of drainage pipelines, an important means is provided for sponge urban construction, and the system has outstanding social, environmental and economic benefits.

The invention discloses a sponge city rainwater collecting, purifying and utilizing combination system which comprises a roof rainwater collecting area, a road rainwater collecting area, a greenbelt rainwater collecting area, a water collecting and sand settling tank, a purifying device and an impounding reservoir. An evaporation preventing layer, a soil layer, a water supply layer and a purifying layer are sequentially arranged on the roof rainwater collecting area from top to bottom. Transverse and longitudinal water collecting pipes are arranged in a bottom gravel layer of the road rainwater collecting area. An evaporation preventing layer, a soil layer, a rough sand layer and a purifying layer are sequentially arranged in the greenbelt rainwater collecting area from top to bottom. A filtering grid is arranged in the middle of the impounding reservoir, a water inlet hole and a water overflow hole are formed in the upper portion of the impounding reservoir, and a water drawing pump is arranged at the bottom of the impounding reservoir. The city environment can be greened and beautified, city rainfall flood pressure can be relieved, pollutants in rainwater can be absorbed, water resources can be saved, the rainwater utilization efficiency can be improved, and important reference significance is achieved on sponge city non-point source pollution control and city water shortage relieving.

A chamber has an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a collection reservoir having an adjustable weir with a skimming edge for skimming off floating matter such as motor oil, other hydrocarbons, and detergents. In alternative embodiments, there are included a screen, one or more baffles, and / or a pivotal filter for further dispersing, detaining, and / or filtering the storm water.

A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a screen that is elevated for separating and suspending miscellaneous debris such as vegetative matter, paper, and plastic, and that extends substantially all the way across the chamber to laterally disperse the storm water in the chamber. In alternative embodiments, there are included one or more baffles, a collection reservoir, and / or a pivotal filter for further dispersing, detaining, and / or filtering the storm water.

A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber is a pivotal filter that catches clay during typical storm flows and pivots out of the way during higher flows. In alternative embodiments, there are included a screen, one or more baffles, and / or a collection reservoir for further dispersing, detaining, and / or filtering the storm water.

The invention discloses a rainwater treatment and storage system capable of being applied to sponge cities. A filtering grating is arranged on the top of a drainage ditch, and the lower end of the filtering grating is communicated with an artificial wetland area; the artificial humid area comprises a rainwater retention area and a wetland enclosing wall arranged on the edge of the rainwater retention area, and a permeable geotechnical cloth is arranged on the outer surface of the bottom face of the rainwater retention area; a buffer pool is communicated with a rough filtration pool through a flow guiding pipe, and a drainage pipe communicated with the rainwater retention area is connected to the flow guiding pipe; an overflow pipe connected with a municipal rainwater pipe network is arranged at the upper end of a reservoir, the reservoir comprises an inner side wall and an outer side wall, and a sandwich layer communicated with a water storage cavity of the reservoir is formed between the inner side wall and the outer side wall; multiple drainage holes communicated with the sandwich layer are evenly formed in the outer side wall, and the outer side wall is wrapped in the permeable geotechnical cloth; a control system comprises a control unit, an electromagnetic valve, a turbidity sensor, a liquid level sensor and a humidity sensor, and the humidity sensor, the liquid level sensor and the electromagnetic valve are all connected with the control unit.

The invention discloses a full-automatic rainwater harvesting irrigation apparatus and an operation method of the same and relates to the technical field of rainwater collection and utilization. The full-automatic rainwater harvesting irrigation apparatus comprises a solar energy photovoltaic power generation system, a rainwater collecting system, an irrigating system and an intelligent control system, wherein solar energy is directly converted into electricity through a solar energy panel by the solar energy photovoltaic power generation system, so energy can be provided for apparatus work; the rainwater collecting system collects rainwater according to an atmosphere raining condition; the irrigating system forms relative irrigation water-supply sources according to soil humidity and water amount required by the plants; and the intelligent control system receives signals of each sensor to control the other systems to work in a coordinate way. By the use of the method and equipment rainwater can be automatically collected and plants can be automatically irrigated; and the method and equipment have wide application range.

The invention relates to an urban road structure with rainwater collecting and solar power generation functions. The urban road structure with rainwater collecting and solar power generation functions includes a motor way, a non-motor way and a sidewalk, also includes a green belt rainwater spraying irrigation system, a rainwater road surface cooling dedusting sprinkler system and a road surface photovoltaic power station storage power supply system, the motor way and the non-motor way respectively comprise a photovoltaic battery road surface layer, a water permeable cushion layer and a water reservoir cell layer, the photovoltaic battery road surface layer comprises many pieces of photovoltaic battery unit boards, water permeable slits are between the photovoltaic battery unit boards, the photovoltaic battery road surface layer is closely stuck on the water permeable cushion layer, the water reservoir cell layer is under the water permeable cushion layer, and the water reservoir cell layer comprises a plurality of water reservoir cells in splicing. The urban road structure can fully collect and use rainwater and makes full use of road surface resources, collected rainwater can irrigate green belts, also can cool and dedust road surface, and a road surface photovoltaic power station can light roads, and provides electric power resources to electrical public transportation.

The invention relates to the technical field of urban road rainwater treatment, in particular to a kerb with the drainage function and the pollutant intercepting function in an urban road rainwater treatment system. The kerb comprises a water inlet, an overflow port, a drainage channel, an overflow channel and a rainwater grating. The rainwater grating is arranged at the water inlet, the included angles between grating bars of the rainwater grating and the inflow direction of the rainwater runoff ranges from 108 degrees t 135 degrees, and the drainage channel is arranged at the bottom of the overflow channel and communicated with a catch basin. The kerb has certain drainage capacity, can make excessive rainwater flow into the greenbelt so as to effectively delay occurrence of the peak value, and can effectively improve the overall drainage capacity of an urban road and reduce the occurrence frequency of urban inland inundation. The kerb further achieves hierarchical control over rainwater runoff pollutants, effectively improves the quality of discharged rainwater and reduces rainwater runoff pollution loads. The kerb can be produced through a modular unit and thus is convenient to construct, install, clean and maintain.

A mobile chamber has an inlet for receiving polluted water and an outlet for pollution-free water to flow out. A mobile trap operating system includes an output pump, an input pump, a pollution tank, and a liquid tank, all operably connected to the chamber. Within the chamber is a collection reservoir with a skimming edge for skimming off floating pollutants such as motor oil, other hydrocarbons, and detergents. Alternative embodiments include a screen, baffles, and / or pivotal filter for further separating the pollutants from the water. A method for separating the pollutants from the water includes directing the water from the water tank at the pollutants and into a collection pool of polluted water, drawing the polluted water into the chamber, receiving the skimmed pollutants from the collection reservoir into the pollution tank, and receiving the pollutant-free liquid from the chamber into the liquid tank.

The invention discloses a method for manufacturing a water permeable brick from waste concrete, and a pavement method of the water permeable brick. The method for manufacturing the water permeable brick from the waste concrete disclosed by the invention comprises the following steps: taking the waste concrete and crushing, so as to prepare regenerated fine powder and regenerated aggregate; adding the regenerated aggregate, water and cement to a blender and stirring; carrying out mechanical pressing on stirred hybrid materials, so as to prepare a green brick; manufacturing the water permeable brick after naturally maintaining. The invention also provides the pavement method of the water permeable brick. The pavement method of the water permeable brick comprises the following steps: tamping a natural soil layer; paving a mixed soil layer on the natural soil layer; paving the regenerated fine powder on the mixed soil layer as a cushion; finally paving the water permeable brick on the cushion. The water permeable brick is prepared by using the waste concrete, and is creatively paved; a lot of waste concrete can be utilized; the brick surface can absorb about 35% of surface water; underground water is evaporated in a sunny day; the ground temperature can be reduced; the content of pollutants such as particulate matters (PM2.5) in pavement air is reduced.

The invention discloses an urban rainstorm waterlogging catchment area analysis method. The method comprises the steps of adopting an SMS surface water simulation system to conduct gridgeneration on any selected area to obtain a calculation area; obtaining DEM data of a to-be-studied area, assigning the roughness and the DEM data to a calculation area, and calculating the elevation of each grid; adding rainfall data into the calculation area, and calculating rainfall yield confluence of each grid by adopting a pre-loss and post-loss method; according to the rainfall yield confluence of each grid, calculating the water depth and the water flow speed of each grid by adopting a surface two-dimensional hydraulic model; calculating the side flow of the grid with the water depth data according to the water flow speed of the grid with the water depth data and the side length of the side of the grid through which the water flow speed passes; and selecting a grid with the water depth greater than a set threshold value as an analysis grid, and judging whether the analysis grid is a catchment area or not according to the water depth of the analysis grid, the water depth of the grid adjacent to the analysis grid and the side flow rate and direction of each grid edge.

A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber are a screen, one or more baffles, a collection reservoir, and a pivotal filter. The screen is elevated for separating and suspending miscellaneous debris such as vegetative matter, paper, and plastic. The baffles increase storm-water residence time to encourage settling of particulate matter such as sand and grit. The collection reservoir has an adjustable weir for skimming off floating matter such as motor oil, other hydrocarbons, and detergents. And the pivotal filter catches clay during typical storm flows and pivots out of the way during higher flows. In addition, a method for maintaining the pollution trap includes removing the screen for cleaning, suctioning out the particulate matter and oil, and replacing the pivotal filter member.

The invention discloses a water drainage open channel for treating and controlling runoff of rainwater of residential areas in a baffling manner, which comprises a water drainage open channel body arranged under a green space of a residential area or / and beside a road. The top of the water drainage open channel body is rectangular while the bottom of the water drainage open channel body is inclined, a water inlet is arranged at a short edge of the water drainage open channel body, and a water outlet is arranged on another short edge of the water drainage open channel body. The water drainage open channel is characterized in that an external water drainage ditch is arranged in the water drainage open channel body along a long edge; and a plurality of baffling galleries which are perpendicular to the external water drainage ditch and are connected end to end are disposed in the water drainage open channel body. The baffling type water drainage open channel which is coordinated with a water drainage ditch of the residential area is designed besides green buildings, green spaces and roads of the residential area, so that a rainwater runoff path is elongated, emergence time of rainwater flow peak of the residential area is delayed, the time for the rainwater to flow into an urban rainwater pipe network is delayed, flood drainage pressure of the urban rainwater pipe network when in storm days is reduced, and possibility of urban waterlogging is reduced.

The invention provides a cloud water reduction and rain enhancement scale prediction method. The method includes the steps that 1, the cloud water reduction scale is predicted; 2, the positions of a rain reduction region and a rain enhancement region are determined; 3, the cloud water migration operation scale and the number of needed devices are measured and calculated; 4, a floating platform is arranged; 5, a floating large-diameter pipeline is arranged; 6, cloud water migration operation is performed. By the application of the technology, input and output port differential pressure and an artificial flow guiding technology, vapor in clouds moves to fixed points in a quantification and orientation mode, precipitation redistribution is achieved, and disaster reduction and environmental improvement dual-factor artificial influence weather is achieved.

The invention relates to an intelligent early-warning device for flood drainage. The intelligent early-warning device comprises a supporting mechanism arranged at a wellhead. A main controller is arranged at the top of the supporting mechanism. The main controller comprises a main control unit, an AD collecting module, an image collecting module, a GPS or a Big Dipper locating module and a wireless transmission module, wherein the AD collecting module, the image collecting module, the GPS or the Big Dipper locating module and the wireless transmission module are electrically connected with the main control unit. A pressure sensor used for collecting the water level of the road surface is arranged at the position, parallel to the road surface, of the bottom of the supporting mechanism and connected to the AD collecting module. The intelligent early-warning device further comprises a liquid level sensor used for measuring the water level of an underground deep well. An ultrasonic sensor is electrically connected with the main control unit through the AD collecting module. The liquid level sensor extends into the underground deep well through a connecting rod fixedly connected with the supporting mechanism. The intelligent early-warning device has the advantages that waterlogging in cities can be warned earlier in real time, and the situations that due to the fact that accumulated water is too deep, people are drowned, and vehicles wade into the water and are damaged can be avoided.

The invention discloses a river embankment structure, particularly discloses a river embankment structure for sponge city construction, and belongs to the technical field of cityscape and channel improvement buildings. The river embankment structure for sponge city construction can effectively absorb street runoff in a flood period with heavy rainfall, and water flow can seep out in a draught period with less rainfall. The river embankment structure comprises a concrete or masonry dike and a flocculent backfilling system. A drain system is arranged on the lower middle portion of the concrete or masonry dike in the vertical direction. A reverse water permeation system is arranged on the upper middle portion of the concrete or masonry dike. The flocculent backfilling system is arranged on the inner side of the concrete or masonry dike. The input end of the drain system and the input end of the reverse water permeation system are communicated with the flocculent backfilling system.

The invention belongs to the field of disaster reduction and prevention and smart cities, and particularly relates to an intelligent delayed plant irrigation device. The device comprises a rain collecting support part, a precipitation water storage part, a filtering adsorption part, a stirring part and a spraying part. This kind of devices are arranged in batches in a green belt or a park of a city. By collecting and treating rainwater and snow water and then carrying out irrigation on plants in rainless days, not only is rainwater stored in a centralized manner when the rainfall is large, butalso urban waterlogging caused by overlarge rainfall is avoided, and meanwhile, rainwater is stored and treated and then used for irrigation, so that the direct application of rainwater after primarycollection is achieved, and the increase of unnecessary treatment costs caused by retreatment after rainwater is mixed with other sewage is avoided.

The invention discloses a method and a device for early warning urban inland inundation based on drainage network monitoring. Early warning for urban inland inundation reasons caused by pipeline scouring, pipeline pollutant accumulation, ponding and overflow in a drainage network system are accurately analyzed, the urban inland inundation reasons caused by ponding and overflow are analyzed intelligently, quickly and accurately by collecting the data of drainage pipelines in real time, judgment in decision for emergency circumstances can be given out quickly, accurately and visually by urban managers, weak links of the drainage network also can be found in real time, an early warning role is achieved for urban drainage, the occurrence probability of urban inland inundation is reduced, the emergency capacity of the urban managers is promoted, and the occurrence of inland inundation is reduced, so that the urban traffic capacity is improved indirectly.

The invention discloses a water drainage cross inspection well preventing water face-to-face flushing, belongs to the field of water drainage projects and particularly relates to a rainwater and sewage convergence water drainage structure. The well is an intersection inspection well applicable to a rainwater or sewage pipeline. Branch pipes on the two sides of a water drainage pipeline are connected into the inspection well through sluices with large cornering radius, the sluices of the branch pipes on the two sides are spaced from a sluice of an upstream pipeline, and the included angle of afflux of the three sluices is small. The inspection well can prevent face-to-face flushing of water entering the inspection well, reduce turbulence flow to stabilize the water and bring the water drainage efficiency of the intersection inspection well into full play, thereby reducing the frequency of waterlogging of urban roads.

The invention discloses a combined rainwater seepage well and a construction method, belongs to the field of drainage projects, and particularly relates to a structure for discarding initial rainwater, adjusting the rainwater and supplying underground water by seeped rainwater. The combined rainwater seepage well mainly comprises a shaft, a pipe and a well body, wherein the shaft is positioned on the lower portion of the well body; and the pipe is connected with the well body. Seepage wells are arranged on a rainwater pipe at intervals of 1-3 inspection wells, rainwater is collected through the pipe during raining and seeps into the ground through the seepage well, the flow of the rainwater is reduced at the source, an effect of shifting peaks and adjusting storage is achieved, and waterlogging caused by accumulated water on the ground is reduced. The shaft is filled with filter materials, a slime pit is arranged on the bottom of the well body, a filter screen is arranged on the bottom of the slime pit, and the rainwater is filtered by the filter materials, seeps into the ground and supplements the underground water. The seepage well is constructed in a combined mode, the well body on the upper portion of the seepage well is constructed by using a down-top method, different sections of the shaft on the lower portion of the seepage well are constructed one by one by using a top-down method, and the construction difficulty and the manufacturing cost are greatly reduced.

The invention provides a method and system for manually influencing weather. The system comprises an integrated floated pipeline, a floated platform and a system remote control platform. The integrated floated pipeline is used for cloud water collecting, conveying and seeding, and in other words, the integrated floated pipeline is used for cloud water collecting, conveying and rainfall catalyst seeding so that rainfall can be generated. The floated platform is used for hanging and drawing the integrated floated pipeline and is suspended on a mooring table though a mooring guy in a fixed point mode. The system remote control platform is used for floated platform lifting, pipeline connection, separation, rainfall catalyst seeding and ground control of working environment observation and monitoring, and is used for improving the manual cloud water migration work efficiency, recording data and improving safety guarantees. The researched and developed light, high-strength and large-drift-diameter pipeline is applied, and 67.4 tons of cloud water can be migrated per hour on average through the single pipeline. By means of the input and output port pressure difference and the manual diversion technology, fixed-point, quantitative and directional movement of moisture in cloud is achieved, redistribution of rainfall is achieved, and weather can be manually influenced through dual factors including disaster reduction and environment improvements.

The invention relates to a house building drainage system. The system involves a vertical wall body, a parapet wall located at the top of the wall body and a drainage groove formed in the parapet wall, wherein a first drainage unit and a second drainage unit are arranged below the drainage groove, the first drainage unit involves a first drainage pipe arranged at the bottom of the parapet wall andcommunicating with the drainage groove and a bent pipe connected to the bottom of the first drainage pipe, the bent pipe is L-shaped, the second drainage unit involves a water tank and a second drainage pipe arranged at the bottom of the water tank, the top of the water tank communicates with the first drainage pipe through a pipeline, and a valve assembly is arranged on the second drainage pipe;the top of the bent pipe is arranged outside the first drainage pipe in a sleeving mode and rotationally connected with the first drainage pipe, an irrigation canal and a drainage ditch which are perpendicular to each other are arranged below the bent pipe, a planting groove is formed in one side of the wall body, and the irrigation canal communicates with the planting groove; and a driving device for driving the bent pipe to rotate is arranged on the first drainage pipe, and an adjusting device is arranged in the first drainage pipe. The house building drainage system has the effects that roof water flow is used for irrigation, and the drainage path can be changed.

The invention discloses a drainage network liquid level online remote monitoring system and method. The method comprises the following steps of S1, collecting liquid level information in a drainage well in real time, and generating a sending data package according to the liquid level information; S2, preprocessing data in the sending data package, and sorting and storing the data according to a preset format; S3, monitoring and analyzing the liquid level of a drainage network in combination with the stored data and a preset liquid level model. By means of the system and method, the liquid level information of the drainage network can be monitored in real time, so that dispatching personnel can remotely know the real-time liquid level condition of the drainage network and make a dispatchingdecision timely, and the working efficiency and working quality of the dispatching personnel are improved. Besides, real-time and accurate basic data is provided for studying dispatching optimizationof a deep-layer tunnel drainage system with large dispatching management difficulty, and full play is given to the effect of the deep tunnel drainage system on reduction of waterlogging and overflowpollution. The drainage network liquid level online remote monitoring system and method can be widely applied to the field of running dispatching of drainage networks.

The invention discloses an urban rainwater pipeline system capable of effectively supplementing underground water. The urban rainwater pipeline system includes a plurality of rainwater openings, filtering screens, rainwater connecting pipes and manholes which are quantitatively corresponding to the rainwater openings respectively, municipal rainwater pipes and filtering layers; each rainwater opening is provided with a first channel which is communicated with two ends of the rainwater opening; and each rainwater connecting pipe is provided with a second channel which is communicated with two ends of the rainwater connecting pipe; each municipal rainwater is provided with a third channel which is communicated with two ends of the municipal rainwater; the manholes are provided with cavities; the rainwater openings are connected with the rainwater connecting pipes; the first channels and the second channels are connected together so as to form channels which are communicated with the rainwater openings and the rainwater connecting pipes; the rainwater connecting pipes are connected with the manholes; the second channels are communicated with the cavities of the manholes; the manholes are connected with the municipal rainwater pipes; the cavities of the manholes are communicated with the third channels of the municipal rainwater pipes; the municipal rainwater pipes are provided with water seepage holes which are communicated with the interiors and the exteriors of the pipe walls of the municipal rainwater pipes; the exteriors of the municipal rainwater pipes are provided with the filtering layers; the filtering layers completely cover the water seepage holes; and the filtering screens are arranged at end portions of the rainwater connecting pipes, wherein the end portions of the rainwater connecting pipes are adjacent to the rainwater openings.

The invention discloses a green and environment-friendly permeable asphalt mixture for cold regions. The green and environment-friendly permeable asphalt mixture comprises, by weight, 210-230 parts ofsteel slag, 8.80-9.53 parts of SBS (styrene-butadiene-styrene block copolymer) modified asphalt, 6.14-6.36 parts of limestone mineral powder, 1.14-1.27 parts of diatomaceous earth, 0.70-0.95 part ofrubber powder, 0.53-0.76 part of TPS (toughened polystyrene) asphalt high-viscosity agents, 0.25-0.30 part of warm mixing agents and 0.47-0.94 part of basalt fibers. The invention further provides a method for preparing the green and environment-friendly permeable asphalt mixture for the cold regions. The green and environment-friendly permeable asphalt mixture and the method have the advantages that the green and environment-friendly permeable asphalt mixture is sufficient in strength, water stability, durability, frost resistance and water permeability, rainwater can be immediately permeatedinto spaces below pavements, accordingly, the driving safety can be greatly guaranteed, driving noise can be lowered, and urban water logging can be reduced; the construction temperatures further canbe reasonably lowered, the construction difficulty can be lowered, and the green and environment-friendly permeable asphalt mixture and the method have important engineering application values.

The invention relates to a building side wall passageway with a rainwater collecting and filtering function. By means of improving a flat-shaped rainwater collecting and filtering tank which is arranged in a building facade, rainwater falling on a building roof is prevented from easily falling on the ground or into a sewer through a pipeline; thus, water storage burden of the urban sewer is reduced, and sponge city construction is matched. Furthermore, rainwater passing through the side wall passageway has larger potential energy as a building is high, the potential energy is used for generating electric energy, another generating mode of new energy is achieved, meanwhile the rainwater is prevented from flowing into the sewer, the treatment amount of an urban water treatment plant is also reduced, the rainwater can be filtered to form domestic water, and waste is turned into wealth.

The invention discloses a method for reducing water on urban streets which builds rainwater accumulation devices in residential quarters or other public areas such as squares, parks and grassy areas without affecting the traffic, wherein the rainwater accumulation devices are communicated with urban sewerage backbone network through drainage branch pipes with drainage flow regulating devices. When it rains, the rainwater on areas except the urban streets firstly flows in the rainwater accumulation devices, then water in the rainwater accumulation devices is drained to the urban sewerage backbone network designedly and organically according to the flow set by the drainage flow regulating devices to outflow. The constant flow organically drainage is carried out according to different zones and different time intervals along the rainwater accumulation devices, the rainwater branch pipes and the backbone pipes so as to solve the conflict that the drainage capacities of the drainage backbone pipes and river channels are not enough as rainwater is drained intensively in short time, and reduce the influence of standing water to the work and life of people.

The invention relates to a biological purification retention zone for a multifunctional sponge city municipal road and a construction technology of the biological purification retention zone. The biological purification retention zone comprises a waterproof geotechnical cloth layer, a water storage and drainage layer, a water storage layer, a water-permeable layer, a filter layer, a planting layer, a water-permeable pipe and a water drainage system, wherein the water storage and drainage layer, the water storage layer, the water-permeable layer, the filter layer and the planting layer are sequentially laid form bottom to top, the upper surface of the planting layer is in a downward-sunken arc shape, the water drainage system is arranged in the middle of the planting layer and comprises anoverflow pipe, a siphon and a main drainage pipe, and the overflow pipe extends out of the surface of the planting layer. According to the biological purification retention zone, urban inland inundation is reduced, when the rainwater amount is large and rainwater is accumulated in the middle of a planting soil layer by a certain amount, excessive rainwater is sucked into the overflow pipe throughthe siphon and drained through the main drainage pipe, thus the rainwater is effectively drained, the various functions of water penetration, water storage, water purification, water retention, waterdrainage and the like are achieved, and the municipal road is incorporated into a part of a sponge city.