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916 results about "Ponding" patented technology
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Ponding is the (typically) unwanted pooling of water, typically on a flat roof or roadway. Ponding water accelerates the deterioration of many materials, including seam adhesives in single-ply roof systems, steel equipment supports, and particularly roofing asphalt. On low-slope asphalt roofs, ponding water allows the oil solvent components of the asphalt to leach out and evaporate, leaving the roof membrane brittle and susceptible to cracking and leaking in the ponding location.
Ponding water detection on satellite imagery
A system for identifying ponding water located on a field from image data is described. In an approach, an image of an agricultural field is analyzed using a classifier that has been trained based on the spectral bands of labeled image pixels to identify a probability for each pixel within the image that the pixel corresponds to water. A flow simulation is performed to determine regions of the field that are likely to pool water after rainfall based on precipitation data, elevation data, and soil property data of the field. A graph of vertices representing the pixels and edges representing connections between neighboring pixels is generated. The probability of each pixel within the graph being ponding water is set based on the probability pixel being water, the likelihood that water will pool in the area represented by the pixel, the probability of neighboring pixels being ponding water, and a cropland mask that identifies which pixels correspond to cropland. A class for each pixel is then determined that maximizes the joint probability over the graph.
Owner:THE CLIMATE CORP
Tunnel lining self waterproof drainage system
InactiveCN102434175AGuaranteed reliabilityImprove waterproof qualityUnderground chambersDrainagePondingTube drainage
The invention relates to a tunnel lining self waterproof drainage system, which comprises a surrounding rock bearing arch, a cast-in-place cement main waterproof layer, a pre-cast cement arch sheet layer and longitudinal drainage channels. Arch sheet layer construction gaps and cast-in-place cement main waterproof layer construction gaps are interlaced. The tunnel lining self waterproof drainage system is characterized in that movable drainage grooves are fixedly arranged below the pre-cast cement arch sheet layer of centralized bursting water seepage points of loose surrounding rocks, and form arch sheet drainage spaces with an inwards concave surface of the pre-cast cement arch sheet layer, the parallel drainage spaces distributed along the section of a tunnel form a movable drainage channel, the longitudinal drainage channels are communicated and are arranged on two sides of the movable drainage channel and the pavement of the tunnel, pre-embedded water guiding pipes are arranged at the centralized bursting water seepage points, a water outlet end of each pre-embedded water guiding pipe is arranged on the inwards concave surface of the pre-cast cement arch sheet layer, and pre-embedded grouting pipes are arranged outside the pre-embedded water guiding pipes. The invention completely solves stubborn problems of the tunnel on cracking, seeping, frost heaving, ponding or freezing and the like on the premise of not arranging an interlayer waterproof layer and a hidden seepage water blind pipe drainage system, and the tunnel lining self waterproof drainage system disclosed by the invention has a simple structure and is convenient to construct.
Owner:中国市政工程西北设计研究院有限公司
Cement concrete permeable brick, permeable road and production methods thereof
InactiveCN101671987AComply with quality deviationMitigate the heat island effectSingle unit pavingsClimate change adaptationPondingBrick
The invention relates to a cement concrete permeable brick, a cement concrete permeable road and production methods thereof. At present, most of urban construction adopting the rigid hardened ground has the problems of dust blowing at a fine day, water accumulation and impermeable ground at a rainy day, no groundwater level supplement, no relief of urban heat island effect, and the like. The invention aims to develop a cement concrete permeable brick, a cement concrete permeable road and production methods thereof. The cement concrete permeable brick is formed by pressing and molding a base material layer and a surface material layer, and both the base material layer and the surface material layer contain cement, sand, stone, water adsorbing resin, asphalt powder, diffusant and a water reducing agent. The production method of the permeable brick is realized by molding the permeable brick by a computer full-automatic building block forming machine; and the production method of the cement concrete permeable road is realized by directly pressing the cement concrete permeable road through a road roller. The invention can achieve the aims of water adsorption, water retention, permeability and practicability, can be widely used for a highway, an airport runway, a roadway, a footway, a square, garden construction, and the like and solve the problem of road icing.
Owner:SHAANXI SUNSHINE RAIN ECOLOGICAL TECH
Water filtration and erosion control system
ActiveUS7449105B2Useful in erosion controlErosion minimizationLoose filtering material filtersCartridge filtersPondingControl system
An erosion control system and method wherein a fabric filter bag is embedded with and / or filled with a flocculating polymer and is positioned on a sloping soil surface to dam and pond water flowing thereacross for settling of the particles in the water, and as the ponding water seeps into the bag the colloidal particles will be filtered or agglomerated for settling. The water then passes through and out of the bag and is further subjected to agglomeration and filtering by a skirt of filter material also impregnated with flocculating polymer, said skirt being anchored to the bag or stacked to maintain the position adjacent and downslope from the bag.
Owner:DENNY HASTINGS FLP 14
Passion fruit planting method
InactiveCN104542152AImprove survival rateIncrease productionSeed and root treatmentGraftingPondingRootstock
The invention relates to technical field of agroforestry planting, in particular to a passion fruit planting method. The method is characterized in that passion fruit seeds are soaked; the soaked seeds are sterilized with a sterilizing agent; germination of the soaked seeds is accelerated in order that buds are taken as scions; seedlings are grafted and cultured as rootstocks, so that the planting and seedling culturing processes of the passion fruit become an artificial control environment condition; in a continuous culturing process, the passion fruit adapts to the environment; the passion fruit seedlings obtained by grafting and seedling culturing are planted; in a planting process, a base is treated in order that the ponding amount is small, and moisture supply is appropriate. Therefore, the survival rate of the passion fruit is increased, the yield of the passion fruit is increased, the planting cost of the passion fruit is lowered, and the influence of introduction temperature difference on the quality and yield of passion fruit is avoided.
Owner:GUIZHOU TAIJIN AGRI TECH DEV
Water filtration and erosion control system and method
ActiveUS20080019780A1Useful in erosion controlErosion minimizationBarrages/weirsLoose filtering material filtersPondingControl system
An erosion control system and method wherein a fabric filter bag is embedded with and / or filled with a flocculating polymer and is positioned on a sloping soil surface to dam and pond water flowing thereacross for settling of the particles in the water, and as the ponding water seeps into the bag the colloidal particles will be filtered or agglomerated for settling. The water then passes through and out of the bag and is further subjected to agglomeration and filtering by a skirt of filter material also impregnated with flocculating polymer, said skirt being anchored to the bag or stacked to maintain the position adjacent and downslope from the bag.
Owner:DENNY HASTINGS FLP 14
Stormwater pretreatment and disposal system
A stormwater drainage system capable of collecting, pretreating and disposing of the stormwater runoff into a dry well. Further capable of stopping the flow of stormwater into the dry well in the event hydrocarbons or other contaminants are present in the stormwater. The system is also capable of isolating stagnant water in the system to prevent the infestation of mosquito larvae.
Owner:QUIKTRIP
Ponding water detection on satellite imagery
A system for identifying ponding water located on a field from image data is described. In an approach, an image of an agricultural field is analyzed using a classifier that has been trained based on the spectral bands of labeled image pixels to identify a probability for each pixel within the image that the pixel corresponds to water. A flow simulation is performed to determine regions of the field that are likely to pool water after rainfall based on precipitation data, elevation data, and soil property data of the field. A graph of vertices representing the pixels and edges representing connections between neighboring pixels is generated. The probability of each pixel within the graph being ponding water is set based on the probability pixel being water, the likelihood that water will pool in the area represented by the pixel, the probability of neighboring pixels being ponding water, and a cropland mask that identifies which pixels correspond to cropland. A class for each pixel is then determined that maximizes the joint probability over the graph.
Owner:THE CLIMATE CORP
Sponge city hydrologic calculation method
ActiveCN108022047AEasy to set upGrasp the effect of regulationClimate change adaptationArtificial lifeHydrometryPonding
The invention relates to the field of hydrologic calculations, and more specifically, to a sponge city hydrologic calculation method. The method includes the steps of S1, collecting rainfall-related basic data within a set time limit of a study region; S2, combined with the collected data, constructing a SWMM model suitable for the study region; S3, constructing different rainfall scenarios, combined with the SWMM drainage model, analyzing response characteristics of a drainage system in the region before and after the regulation and control via LID measures under the different rainfall scenarios, and comparing regulation and control effects of the LID measures; and S4, establishing a regional rainfall flood characteristic assessment system to explore spatial and temporal characteristics of a rainfall flood before and after the regulation and control via the LID measures under the different rainfall scenarios. The invention provides the sponge city hydrologic calculation method, whichconstructs the regional drainage model, simulates the peak runoff, drainage pipe network drainage pressure, water accumulation time and water accumulation amount in a sub catchment region before and after the regulation and control via the LID measures in the region under various extreme rainfall scenarios, is conducive to grasping the regulation and control effects of the LID measures on the regional rainfall flood and facilitates the setting of the LID measures in the construction of sponge cities.
Owner:SUN YAT SEN UNIV
Integrated rainwater system for sponge city and construction method of rainwater system
ActiveCN106193247AGood effectSolve the problem of stagnant waterWater resource protectionFatty/oily/floating substances removal devicesDry seasonWater storage tank
The invention discloses an integrated rainwater system for a sponge city and a construction method of the rainwater system. The rainwater system comprises a middle green belt and water storage tanks, wherein the middle green belt comprises a vegetation planting area and a rainwater infiltration area; a concrete course is arranged at the lower end of the rainwater infiltration area; a rainwater pipe is arranged at the lower end of the concrete course, and the rainwater pipe is connected to the water storage tanks; water pumping pipes are connected from the interiors of the water storage tanks; bidirectional nozzles are arranged at the other ends of the water pumping pipes; and water pumps are connected to the water pumping pipes. In accordance with the shortcomings of the prior art and the characteristics of the sponge city, the rainwater system, which integrates water seepage, water storage, water purification and utilization, is designed, and the construction method of the rainwater system is correspondingly designed; by promoting the water seepage with the adoption of vegetation, the problem of road water-logging is solved through slow discharge and controlled release; and in addition, some impurities in the rainwater are separated on the basis of the purification capacity of the vegetation, and the rainwater is stored in the water storage tanks and is used for spraying roads and watering the vegetation in dry season, so that adverse effect caused by drought and flood seasons can be effectively relieved.
Owner:ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER
Filling reclamation method for reclaiming coal mining subsidence lands by Yellow River sediment
ActiveCN103283335AGuarantee the source of covering soilDrain fastSoil lifting machinesSoil-working methodsPondingSoil depth
The invention relates to a filling reclamation method for reclaiming coal mining subsidence lands by Yellow River sediment and belongs to the technical field of mine environment protection. The filling reclamation method includes: confirming trends and sizes of Yellow River sediment filling strips according to the sizes and the shapes of a subsided basin to be filled; draining accumulated water in the subsidence land via existing drainage ditches around the subsidence land, and building a field path and drainage ditches along the vertical filling trend in the central area of the subsidence land; confirming the soil stripping depth of every strip according to the sediment depth, the available soil depth and reclamation elevation of every strip to be filled, stripping surface soil from subsoil in a strip-separated and layered stripping manner, and piling the surface soil and the subsoil on two sides of every strip; filling along a direction from two ends of the strips perpendicular to the central drainage ditches to the drainage ditches, covering the strips by the subsoil and the surface coil sequentially in a reasonable thickness after drainage consolidation of the filled sediment, and finally leveling the land to form a reconstructed soil profile. The filling reclamation method provides technical supports for filling reclamation of the coal mining subsidence lands by the Yellow River sediment.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
Vehicle navigation device and method
ActiveCN106767867AAvoid congestionImprove travel efficiencyInstruments for road network navigationPondingData acquisition
The invention discloses a vehicle navigation device and method. The device comprises a data acquisition module, a route generation module, a route matching module, and a navigation module, wherein the data acquisition module is used for acquiring current driving path data of a vehicle to be navigated within a preset duration away from the current moment when detecting a usual route navigation instruction; the route generation module is used for generating a current driving route of the vehicle to be navigated according to the current driving path data; the route matching module is used for judging whether the current driving route is matched with a prestored usual driving route or not; if the current driving route is matched with the usual driving route, traffic information on the usual driving route is acquired; the navigation module is used for outputting a corresponding navigation suggestion according to the traffic information on the usual driving route. The vehicle navigation device and the method provided by the invention timely inform a user through the navigation suggestion when special circumstances such as jam, ponding or road maintenance occurred on the usual route, so that a vehicle of the user is prevented from being blocked on the usual route, meaningless time waste is avoided, and the transportation efficiency of the user on the usual route is further improved.
Owner:湖南索菱汽车电子科技有限公司
Urban accumulated water prediction and safety early warning system based on flood drainage model
PendingCN110633865ARealize waterlogging predictionAchieve securityForecastingData miningPondingEarly warning system
The invention provides an urban accumulated water prediction and safety early warning system based on a flood drainage model. The urban accumulated water prediction and safety early warning system combines the flood drainage model, weather forecast, an accumulated water on-line monitoring system and a decision support system, and achieves support for urban accumulated water prediction and safety early warning. The urban accumulated water prediction and safety early warning system comprises the following steps: (1) combining a pipe network model with a production and confluence model to construct a flood drainage model; (2) depending on a flood drainage model, performing multi-scenario rainfall simulation and warehousing; (3) collecting and reporting real-time rain condition data; (4) calling a multi-scene rainfall bank; and (5) carrying out online prediction and safety early warning on road ponding. The urban accumulated water prediction and safety early warning system based on a flooddrainage model can effectively, accurately and dynamically forecast the flood prevention and drainage conditions of urban ponding-prone points in real time, and can facilitate decision support of a management department.
Owner:航天海鹰安全技术工程有限公司
Stormwater pretreatment and disposal system and method
InactiveUS7645390B1Water treatment parameter controlFatty/oily/floating substances removal devicesPondingEngineering
A stormwater drainage system capable of collecting, pretreating and disposing of the stormwater runoff into a dry well, further capable of stopping the flow of stormwater into the dry well in the event hydrocarbons or other contaminants are present in the stormwater. The system is also capable of isolating stagnant water in the system to prevent the infestation of mosquito larvae.
Owner:QUICKTRIP
Ponding preventive water draining device with filtering function
InactiveCN110725181ASimple structureQuick clean upSewerage structuresPaving gutters/kerbsPondingSewage
The invention discloses a ponding preventive water draining device with the filtering function. The ponding preventive water draining device mainly comprises a casing, wherein a filtering mechanism for filtering sewage through a filter screen is arranged in the casing; a driving mechanism for providing power for the device is arranged on the right side of the filtering mechanism; and a collectingmechanism for collecting filtered garbage through a pushing block is arranged on the lower side of the driving mechanism. The ponding preventive water draining device can carry out filtering and sedimentation treatment on water on a road and then drains the water in a sewer pipe; in addition, when the ponding on the road is serious, the water inlet quantity can be automatically adjusted to rapidlyclean the ponding on the road; and moreover, the ponding preventive water draining device can collect garbage filtered on the filter screen and garbage precipitated in a sedimentation tank to preventthe blocking phenomenon after a long time.
Owner:诸暨新伏给排水设备有限公司
Method for establishing simplified hydraulic model of urban downward-concave overpass area under different rainstorm situations
ActiveCN103886151ASimplify workThe method of building the model is simpleSpecial data processing applicationsPondingEnvironmental resource management
The invention belongs to the technical field of municipal engineering, and discloses a method for establishing a simplified hydraulic model of an urban downward-concave overpass area under different rainstorm situations. The method comprises the steps that the catchment range of a high-catchment area and a low-catchment area of the urban downward-concave overpass area and a high-precision DEM are determined to serve as earth surface elevation input conditions of the model; the input of a model pipe network is simplified through the rainfall loss form; the waterlogging disaster situation in the urban downward-concave overpass area under the different rainstorm situations is simulated through the computer hydraulic model; an improvement implement scheme is determined according to a model calculation result. The method for establishing the simplified hydraulic model of the urban downward-concave overpass area under the different rainstorm situations is stated, the waterlogging disaster situation in the urban downward-concave overpass area under the different rainstorm situations can be simulated, and a current overpass area designing scheme can be assessed. According to the method, it makes possible that the reason for ponding of a downward-concave overpass is analyzed through the hydraulic model, and a theoretical basis is provided for improving and planning the downward-concave overpass.
Owner:长沙柳腾科技有限公司
Cable trench and tunnel inspection unmanned aerial vehicle system
ActiveCN109760837AHigh degree of automationImprove securityPosition/course control in three dimensionsAircraftsPondingData acquisition
The invention discloses a cable trench and tunnel inspection unmanned aerial vehicle system. The system comprises an unmanned aerial vehicle and a control device; a modeling data acquisition device, acollision pre-warning device, an infrared data acquisition device, an infrared composite gas detection device and a temperature and humidity detection device are fixedly connected with the unmanned aerial vehicle; the unmanned aerial vehicle is electrically connected with the modeling data acquisition device, the collision pre-warning device, the infrared data acquisition device, the infrared composite gas detection device and the temperature and humidity detection device; and the control device and the unmanned aerial vehicle are wirelessly connected with the modeling data acquisition device, an upper computer, a BDS control intranet, the infrared data acquisition device, the infrared composite gas detection device and the temperature and humidity detection device. The system is capableof recognizing parameters and features such as temperature, humidity, harmful gas concentration, water seepage and ponding, cable damage, discharging, heating, snake and mouse in cable trenches and tunnels in real time, and carrying out demarcation and recording in environment data models, and has the characteristics of remote operation, high inspection efficiency, no leak inspection, safety, reliability and all-weather operation.
Owner:XIJING UNIV
Sponge city drainage structure and sponge city water circulation system
InactiveCN106703158AGood water permeabilityEfficient managementSewerage structuresSewage drainingPondingWater circulation
The invention provides a sponge city drainage structure and a sponge city water circulation system, and relates to the technical field of sponge cities. The sponge city water circulation system comprises a sponge city drainage structure, a filtering structure and a water utilization structure which are communicated in sequence, wherein the water permeating surface of the sponge city drainage structure is provided with a plurality of overflow pipes in a penetrating mode. A holey blind tube is placed in the drainage penetrated layer in an embedded mode. Each overflow pipe placed at one end of the drainage penetrated layer is connected with the holey blind tube. The other end of the holey blind tube is connected to the filtering structure. When the rainfall is low, the rainwater enters into the reservoir to be stored and then penetrates through the soil layer. When the rainfall is high, the water level of the reservoir rises above the holey permeable blind tube and the rainwater is output to the filtering structure through the holey blind tube to be ecologically purified, and then the rainwater is extracted by the water utilization structure. The water penetration effect of the sponge city drainage structure is good. The rainwater infiltrates to underground or is drained to the external part which avoids causing the ponding. The sponge city water circulation system is capable of evenly achieving comprehensive and effective rain flood managing for different rainfall.
Owner:武汉艺源环境艺术工程有限公司
Leakage-proof construction process method of toilet and kitchen
InactiveCN109356295AOvercoming the quality problems of water seepage and leakageImprove waterproof performanceBuilding insulationsFlavorProof construction
The invention provides a leakage-proof construction process method of a toilet and a kitchen. The quality problem that the weak positions such as floor drains, wall footings, pipe roots and wall surface holes leak water is solved, the waterproof property of the toilet and the kitchen is improved, peeling and cement blooming of wall surface emulsion paint and wallpaper are avoided, and the servicelife of decorative materials and decoration projects is prolonged; through slope finding and floor drain reforming, the problem that water is accumulated on ground mortar layers of the toilet and thekitchen is effectively avoided, and thus the foreign flavor is avoided; and a construction method is simple, the construction cost is low, and the healthy and sanitary living environment is created for people.
Owner:陕西中林建筑装饰工程有限公司
Sponge city drainage structure and sponge city water circulating method
InactiveCN110528351AIncrease profitSave waterGeneral water supply conservationPaving gutters/kerbsEngineeringWater circulation
The invention relates to a sponge city drainage structure and a sponge city water circulating method. A road structure comprises a permeable concrete layer, a mortar leveling layer, a graded broken stone layer and a plain soil layer from top to bottom in sequence; support grids are arranged in the mortar leveling layer; a guide pipe for drainage is arranged in the graded broken stone layer; drainage ditches and road traffic stones are arranged on the two sides of the road layer structure; the drainage ditches are positioned between the road layer structure and the road traffic stones; drain pipes are arranged at the bottoms of the drainage ditches; water storage cavities are formed in the road traffic stones, and communicate with the drainage ditches through drainage holes; the other sides, relative to the drainage holes, of the water storage cavities communicate with green belts through permeable holes; the green belts comprise pebble beds, planting soil layers and green broken stonelayers in sequence from top to bottom; drainage pipes for drainage are arranged in the green broken stone layers; a water collecting pool is connected with a main pipe; and the guide pipe, the drain pipes and the drainage pipes communicate with the main pipe. The structure achieves the effects of reducing the city road ponding conditions and improving the rainwater utilization rate.
Owner:广东洋艺建设有限公司
Construction method of large-diameter crushed stone pile
ActiveCN102888834AReduce penetration resistanceReduce equipment performance requirementsSoil preservationThin walledEngineering
Owner:SHANGHAI SHEN YUAN GEOTECHN +2
Ecotype slope-style planting container
The invention relates to an ecotypic sloing planting container with the container, drain-vent pipe set at the bottom of the container, vent hole set on the inner side of the drain-vent pipe, and at least a piece of baffle set in the container. The bottom of the container doesn't leak hydrops not to corrode and damage the ground, is well ventilated, and especially when applied to the roofs of buildings, can insulate the heat; can prevent the planting or cultivating base material from leaking, which keeps environmental sanitation outside the container and also ensures storing some water; can stop the plants on the roof and the planting base material sliding in the container not to pile and lose.
Owner:SHANGHAI ZHONGHUI ECO TECH
Device for clearing blocking of drainage well cover of sponge city pavement
ActiveCN110629861AEnsure regular drainageMeet drainage requirementsSewerage structuresPondingDraining tube
The invention discloses a device for cleaning blocking of a drainage well cover of a sponge city pavement. The device comprises the pavement and a curbstone, a drainage channel is formed in the side,close to the curbstone, of the pavement, a mounting opening is formed in the channel opening of the drainage channel, the drainage well cover is arranged in the mounting opening, a water inlet cavityis formed in the curbstone, a water inlet communicating with the water inlet cavity is formed in the side wall of the upper end of the curbstone, a big piston is arranged in the water inlet cavity, anelastic airbag is connected between the lower end of the big piston and the inner bottom of the water inlet cavity, a drainage pipe communicating with the drainage channel is arranged on the inner wall of the water inlet cavity, strip-shaped cavities are formed in both sides of the drainage channel, the inner bottoms of the strip-shaped cavities are bonded to a vertically arranged folding airbag,and the folding airbag communicates with the elastic airbag through an air pipe. The device for cleaning blocking of the drainage well cover of the sponge city pavement is reasonable in structure, and when water on the pavement where the drainage well cover is blocked is accumulated to a certain degree, debris clogged on the drainage well cover can be jacked up in time to clear the blockage in time.
Owner:山东格式医疗器械有限公司
Sediment containment barrier
A sediment containment barrier capable of functioning in an outdoor environment for 18-24 months or more, while offering full rebound to compression impacts even after exposure to rain, construction traffic, and other harsh elements of an active construction site. Through a protected central core of foam or air surrounded by a water impermeable middle membrane and outer filtering shell, the barrier is able to withstand being run over by construction traffic hundreds of times while rebounding to its original shape and more importantly maintaining its compliance as an effective dirt and silt containment barrier. Due to the filtering qualities and the embedded nature of the barrier, the barrier offers high flow, reduction in the ponding of water, the effective filtration of sediment and silt, and a lower height than conventional sediment containment barriers.
Owner:WORLD TEXTILE & BAG
Design method and design system for roof rainwater drainage systems and drainage system
The invention provides a design method for roof rainwater drainage systems, which comprises the following steps of: calculating the volumetric flow rate of water flowing through a rainwater hopper; calculating the mass flow rate of an aerified water flow; calculating the pressure loss of each pipeline section based on the mass flow rate of the aerified water flow; calculating the values of negative pressures on a hanged pipe and a stand pipe at the junction point of the tail end of the hanged pipe and the top end of the stand pipe; judging whether the values of negative pressures on the hanged pipe and the stand pipe at the junction point satisfy the design requirements of a pipe system or not, if so, completing the design process; and otherwise, designing the value of each pipe diameter again, and then calculating again. Therefore, in the drainage system designed according to the design method for roof rainwater drainage systems provided by the invention, the pipes of the drainage system are thin and short in length, so that the application quantity and construction quantity of the pipes can be reduced, thereby reducing the cost of the whole drainage system. Meanwhile, the drainage system is additionally provided with an exhaust device, therefore, the hidden troubles such as roof rainwater ponding and leakage as well as manhole sweating can be avoided.
Owner:CHINA IPPR INT ENG
Water-permeable brick and preparation method thereof, and pavement construction technique
InactiveCN106365553AAchieve technical effectReduce manufacturing costSingle unit pavingsPaving gutters/kerbsUrban climateBrick
The invention belongs to the technical field of pavement construction, and particularly relates to a water-permeable brick and a preparation method thereof, and a pavement construction technique. Compared with the prior art, the water-permeable brick has favorable physical properties and water permeability. The water-permeable brick prepared by using the pulverized graded construction wastes as the aggregate can implement recycling of construction wastes, and the preparation cost of the water-permeable brick can be lowered. The water-permeable brick pavement uses the water-permeable bricks with favorable water drainage and seepage actions as the paving material, so that rainwater can quickly seep into the bearing layer and directly seep into the underground soil layer, thereby supplementing moisture to the soil layer and improving the growth conditions of ground plants. The water-permeable brick pavement is beneficial to relieving the urban heat island effect, regulating the urban climate, reducing the PM2.5 in the air and preventing the pavement from water accumulation.
Owner:唐健发 +1
Test evaluation system and method for rainy environment perception and identification capability of unmanned vehicle
InactiveCN109141920AEasy to plan driving routesIncrease autonomyVehicle testingPondingPattern perception
The invention discloses a test evaluation system and method for a rainy environment perception and identification capability of an unmanned vehicle. The system comprises the unmanned vehicle, a test place and a test control center, the test place comprises a rainy area test road and a no-rainy area test road, the test control center sends a test instruction to the unmanned vehicle, the unmanned vehicle drives in the corresponding rainy area test road according to the received test instruction, the test control center receives data of the unmanned vehicle in the test process, and traffic light,road signboard and barrier identifying capabilities as well as ground mark and zebra stripe identifying during ground ponding of unmanned vehicle are evaluated in the set rainfall environment. Thus,the unmanned vehicle is tested in the rainy driving condition from the aspects of traffic light and road signboards, the unmanned vehicle can plan a driving path, and the unmanned vehicle has a higherautonomous driving capability in rainy days.
Owner:SHANDONG ACAD OF SCI INST OF AUTOMATION
Roof rainwater collecting system
ActiveCN105839755AEffective filteringMeet production needsRoof drainageSewage drainingPondingOutfall
The invention discloses a roof rainwater collecting system, which comprises a roof, a rainwater collecting groove, a primary filtering device, a split-flow device, a reverse flushing filtering device and a rainwater collecting barrel, wherein the rainwater collecting groove is formed at the lower edge of the roof; the primary filtering device is arranged at the lower part of a water outlet opening of the rainwater collecting groove in a non-contact way, and can be used for intercepting sundries with large sizes to prevent a water passing pipeline from being blocked; an intercepting regulating rod of the split-flow device can intercept the rainwater from entering a regulating cavity so as to raise a floating ball valve; the early stage rainwater split-flow and the later stage pure water collection can be realized; the reverse flushing device is provided with a first filtering screen, a second filtering screen and a flushing device; the filtration on the collected rainwater can be realized; when pipeline accumulated water increase is caused by the blockage of the first filtering screen and the second filtering screen by filtering sundries, under the rainwater static pressure effect in the water passing pipeline, a piston is driven to move, a flushing outlet is opened; and the automatic flushing on the reverse flushing device can be realized. The roof rainwater collecting system has the dual filtering and early stage rainwater split-flow function; and the rainwater collection and utilization efficiency can be improved.
Owner:JIANGSU UNIV
Method for dividing urban rainstorm waterlogging evaluation units based on Voronoi diagram
The invention discloses a method for dividing urban rainstorm waterlogging evaluation units based on a Voronoi diagram. The method includes the steps of using DEM data to determine the direction of water flow to extract low-lying points, and using low-lying point buffer zones to carry out combined screening for the low-lying points; intercepting centerlines of roads and rivers with regular grids,and selecting a center point of each section of the centerline; and generalizing pipeline data to extract real rainwater wells, water outlets and other nodes, and building a Voronoi diagram based on the above low-lying points, road and water system center points, pipelines and other nodes so as to complete the division of evaluation units in a study area. Compared with a traditional method for dividing waterlogging evaluation units using topographic data alone, the method integrates the functions of the actual water system and roads to collect the waterlogging and accumulated water on the basis of the topographic data, so that the divided waterlogging evaluation units better fit the actual situation.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
An urban rainstorm water accumulation assessment modeling method based on full space-time
PendingCN109919372AReflect retrofit impactShorten operation timeForecastingNeural learning methodsPondingProduction model
The invention discloses an urban rainstorm water accumulation assessment modeling method based on full space-time, and the method comprises the following steps: 1, obtaining DSM data containing surface information, employing a D8 algorithm to divide a water catchment area, and modifying the boundary of the water catchment area according to the connection and distribution conditions of a real pipenetwork, so as to obtain the divided water catchment area; 2, establishing a surface runoff production model, and calculating runoff production of each catchment area; Step 3, establishing a surface confluence model, and calculating confluence of each catchment area; And step 4, establishing a drainage experience model to carry out drainage calculation, and calculating the drainage capacity of each catchment area through the drainage experience model so as to obtain an urban inland inundation assessment result. The DSM is adopted to divide the urban catchment area, the influence of urban planning and construction on urban topography reconstruction can be well reflected, and the method is more practical; The problem that drainage calculation cannot be carried out due to lack of structural data of a drainage pipeline is solved, and the operation time of the model is remarkably shortened.
Owner:WUHAN UNIV
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