37results about How to "Reduce flood damage" patented technology

The invention discloses a method for collecting rainwater. The method comprises the following steps that: a rain dropping pipe guides rainwater on a roof to a scattering ditch, the rainwater passes through a collection pipe network and enters a sunken green land, and the rainwater on a hardened land and a road surface is guided to the sunken green land; a seepage layer is arranged below the sunken green land and a green land, and a seepage pipe network is arranged in the middle of the seepage layer and connected with an impounding reservoir; the rainwater flows through the soil layer and the seepage layer and supplements the underground water; when the underground water level ascends due to rainfall, the rainwater flows through the seepage pipe network, enters the impounding reservoir and is used; and the water in the impounding reservoir can be fed into a water pipe network in a city. The invention also discloses a device for collecting the rainwater. The rain dropping pipe is arranged on a house and connected to the scattering ditch; the scattering ditch is connected to the collection pipe network; the collection pipe network is connected to the sunken green land; sewers are arranged on the hardened land, the green land and the road surface and connected with the sunken green land; the seepage layer is arranged below the soil layer below the sunken green land and the green land; and the seepage pipe network is arranged between the seepage layer and connected with the impounding reservoir. The device is rationally designed, and the method is simple; the number of targets is large; the use and maintenance costs are low; and the service life is long.

A river basin cascade reservoir and detention and retarding basin joint scheduling method comprises the following steps: S1, collecting the basic data of a river basin; S2, drawing a river basin flood risk chart and dividing risk areas; S3, acquiring precipitation, runoff forecast data and reservoir operation data of reservoirs and ranges in real time; S4, by taking the forecast and operation data in S3 as input, establishing and solving a reservoir group and detention and retarding basin joint real-time scheduling multi-objective optimization model; and S5, enabling detention and retarding basin compensation calculation. The method can give full play to the flood control and economical benefits of detention and retarding basins, and can be widely used in reservoir group and detention and retarding basin joint scheduling. Sustainable development of detention and retarding basins is taken into full consideration by enabling a compensation mechanism. A new scientific decision-making approach is provided for river basin flood control scheduling.

The invention discloses a municipal road drainage system and a drainage method. One part of rainwater is converged along a road surface to a municipal road gully and then enters a municipal rainwater pipeline; the other part of rainwater flows to a greenbelt between a motor way and a non-motor way through holes in curbs on two sides of the motor way; after the rainwater entering the greenbelt is filtered and purified by the greenbelt to infiltrate downwards, excessive rainwater flows into a permeation tube of a permeation drainage pipeline system to infiltrate downwards for replenishing the underground water, and the rainwater which does not infiltrate downwards quickly due to high rainfall intensity is drained through an overflow pipe of the permeation drainage pipeline system to the municipal rainwater pipeline under the motor way; the rainwater directly entering the municipal rainwater pipeline through the municipal road gully and the rainwater entering the municipal rainwater pipeline through the overflow pipe of the permeation drainage pipeline system are jointly drained to a nearby water body through the municipal rainwater pipeline. According to drainage performances of the greenbelt and the permeation drainage pipeline system, purification of initial contaminated rainwater, deceleration of peak discharge, relief of urban water logging, replenishment of underground water and the like are realized.

The invention discloses a device for blocking a dike breach. The device comprises combined steel pipe piles C, movable platforms B, a piling machine, upstream connecting rods E, downstream connecting rods F and horizontal tie rods D, wherein the movable platforms B are arranged on the combined steel pipe piles C through brackets G, the upstream connecting rods E are connected with the upper parts of the combined steel pipe piles C at the upstream of a pile net in a longitudinal direction, the downstream connecting rods F are connected with the upper parts of the combined steel pipe piles C at the downstream of the pile net in the longitudinal direction, and the horizontal tie rods D are connected with the upper parts of the combined steel pipe piles C at the upstream and the downstream of the pile net in a horizontal direction. According to the device disclosed by the invention, the dike breach is quickly and conveniently blocked, the standardization and the modularization of rescue work are realized, the rescue work is more convenient and quicker, the labor intensity is reduced, and the loss caused by flood disaster is reduced to the maximum.

The invention relates to an underground stereo parking garage at roadsides. The underground stereo parking garage comprises a garage building body, a lifting handling mechanism and an automatic control system, wherein the garage building body is a stereo framework formed by steel frame structures; two columns of multiple-row berths are arranged on each layer of the stereo framework; one column of berths are taken as parking berths and the other column of berths are taken as handling berths; a crawler-type vehicle carrying platform A is arranged on each parking berth; a track for enabling the lifting handling mechanism to move is arranged at the bottoms of the handling berths; the lifting handling mechanism is arranged in the handling berths of the stereo framework; the lower end of the lifting handling mechanism is arranged on the track; the lifting handling mechanism can be driven by a horizontal moving mechanism to move along the extending direction of the track in a reciprocating way; the lifting handling mechanism comprises a crawler-type vehicle carrying platform B and a lifting device; the crawler-type vehicle carrying platform B can be driven by the lifting device to vertically move between any handling berths in a reciprocating way. According to the underground stereo parking garage disclosed by the invention, by fully utilizing underground spaces at two sides of a road, the quantity of vehicles parking on the ground is reduced, the parking is more convenient, and the traffic is smoother.

The invention relates to a regional rainwater collection and utilization engineering system and a regional rainwater deployment method. The regional rainwater collection and utilization engineering system comprises a rainwater collection system, a water quality treatment system and a control deployment system, wherein the rainwater collection system comprises rainwater collection trench pipelinesarranged along a hardened underlying surface, barriers and a reservoir; the water quality treatment system comprises a filtration system; the control deployment system comprises water quality monitoring equipment, a water level monitor, a control gate and a water pump; the filtration system is communicated with the underlying surface through the rainwater collection trench pipelines and communicated with the reservoir, the control gate is arranged between the filtration system and the reservoir, the water quality monitoring equipment and the water level monitor are arranged in the reservoir, the water pump is used for draining water in the reservoir, and the barriers are arranged on the periphery of the infiltration underlying surface. By means of the regional rainwater collection and utilization engineering system, the utilization rate of the rainwater can be effectively increased, water pollution can be reduced, and water and soil loss caused by surface runoff can be reduced.

A three part foundation system for supporting a building is described. Three part foundation systems can include a containment vessel, which constrains a buffer medium to an area above the containment vessel, and a construction platform. A building can be built on the construction platform. In a particular embodiment, during operation, the construction platform and structures built on the construction platform can float on the buffer medium. In an earthquake, a construction platform floating on a buffer medium may experience greatly reduced shear forces. In a flood, a construction platform floating on a buffer medium can be configured to rise as water levels rise to limit flood damage.

The invention discloses a river pumping irrigation multifunctional scenery waterfall dam which comprises river dam bodies constructed on one side or two sides along the river direction. A main overflow channel is formed at the top of each river dam body along the length direction of the same. Two auxiliary overflow channels lower than each river dam body are respectively constructed on two sides of the river dam body. Lotus-fish ponds are constructed on the outer side of each of the two auxiliary overflow channel. A protection net is disposed at the junction of each inner lotus-fish pond close to the river and the river. Each outer lotus-fish pond is communicated with a large field requiring irrigation through a water outlet. Water pumping devices such as a waterwheel are used to transfer water from the river to the main overflow channels. By the main and auxiliary overflow channels, the water running mode of 'one river two overflows' is formed, a natural scenery waterfall is formed by utilizing height of water, ecological environment is coordinated, air humidity is increased, coolness and warmness are optimized, and comfortableness of living environments is increased. The main and auxiliary overflow channels allow farmers to use the water flowing down to fight drought and irrigate fields and can distribute floods in the river.

The invention discloses a rain flood resource utilization device for a field greenhouse area in the northern area and a construction method. The problem that in the prior art, the surface runoff in the northern area is large is solved, and the device has the advantages of achieving rainwater collection, storage and utilization and effectively saving water. According to the specific scheme, the rain flood resource utilization device for the field greenhouse area in the northern area comprises a rainwater collection unit, a purification unit, a water storage unit and a utilization unit, whereinthe rainwater collection unit is arranged on the side portion of the bottom of a field greenhouse, the top of the rainwater collection unit is lower than the ground surface around the greenhouse, therainwater collection unit is arranged in the length direction of the greenhouse to collect the surface runoff generated by rainfall around the greenhouse and rainwater sliding down from the greenhouse, the rainwater collection unit comprises a plurality of longitudinally-arranged water collection grooves, the adjacent water collection grooves communicate with each other, and the size of the top ofthe rainwater collection unit is larger than that of the bottom of the rainwater collection unit; the purification unit comprises a plurality of filtering layers, and the filtering layers are arranged on the tops of the water collection grooves respectively; the water collection groove in the bottommost layer communicates with the water storage unit; and the utilization unit communicates with thewater storage unit to supply water to the field greenhouse.

The invention discloses an aerial water receiving canopy which is characterized in that a foldable water receiving canopy in the shape of an inverted umbrella with a funnel or a pot or a hinge is adopted; and the water receiving canopy is supported in the air through a support frame. The support frame adopts a telescopic metal tube. By utilizing the aerial water receiving canopy, a reclaimed water source can be fully utilized; rainwater is received in the air and stored in a sealed suspended reservoir, thereby avoiding loss, infiltration and evaporation of the part of the rainwater; simultaneously, flood disasters and flood problems in a region can be reduced; the aerial water receiving canopy is energy-saving and environmentally-friendly; as the aerial water receiving canopy can receive the water in the air, the rainwater is not polluted by the ground; and the aerial water receiving canopy is simple and practical, simple and reasonable in structure and easy for realization of industrial production. The aerial water receiving canopy product is not affected by the region and territorial water, and is generally suitable for all places of the world and especially suitable for water receiving and water consumption of people in outlying mountain areas, villages, sentry posts, plateaus, deserts, islands and marine vessels. The aerial water receiving canopy is really a water conservancy project which is beneficial to livelihood of people around the world.

The invention discloses an urban rainwater collecting, purifying and storage-regulating ecological utilization system. The urban rainwater collecting, purifying and storage-regulating ecological utilization system comprises a rainwater collecting part, a plant filter band, a filter part, a rainwater collecting pond and a rain water storage pond. The rainwater collecting part is connected to the filter part, the plant filter band is located on the upper part of the filter part, the filter part communicates to the rainwater collecting pond, the rainwater collecting pond is connected to the rainwater storage pond, the filter part comprises a grid bracket, ores and a filter layer, the ores are divided into multiple layers, the ores are paved in the grid bracket, and the ores are one or more ores, and the filter layer is located on the side face of the grid bracket and communicates to the rainwater collecting pond. In this way, the urban rainwater collecting, purifying and storage-regulating ecological utilization system has the benefits of storing rainwater, supplementing irrigation water for urban afforestation effectively, and promoting ecological balance of the urban environment.

The invention discloses a sponge city flood optimal scheduling method suitable for complex hydraulic connection. The method comprises the steps of building an urban hydraulic connection topological relation graph; determining main nodes of flood scheduling, and optimizing and calculating a time interval; determining a target function of flood scheduling according to the main control target of flood scheduling; determining a constraint condition of flood scheduling; establishing a flood scheduling model according to the target function and the constraint condition of flood scheduling; accordingto the priority of the target function of flood scheduling, a hierarchical optimization method is adopted, the optimal calculation time interval of flood scheduling is combined, a flood scheduling model is optimized and solved, a flood scheduling system is integrated, and urban flood scheduling is guided according to the optimal scheduling result of the flood scheduling model. Aiming at the sponge city flood scheduling problem with complex mesh hydraulic connection, blindness of an existing experience scheduling mode can be avoided, scientific and refined scheduling of the city flood problemis achieved, and city flood disaster loss is eliminated or reduced to the maximum extent.

The invention discloses a quantitative calculation method for the flood storage and detention effect of a coal mining subsidence area. The method comprises the steps that the natural inflow daily average flow of a riverway connected with the coal mining subsidence area is acquired, and the daily natural inflow of the riverway is calculated according to the natural inflow daily average flow of the riverway; the reservoir capacity corresponding to the design flood level of the coal mining subsidence area is acquired, the dead reservoir capacity of the coal mining subsidence area is acquired, and the flood volume corresponding to the flood control level of the riverway connected with the coal mining subsidence area is acquired; the flood storage and detention effect of the coal mining subsidence area is quantitatively calculated according to the natural inflow daily average flow of the riverway, the reservoir capacity corresponding to the design flood level, the dead reservoir capacity and the flood volume corresponding to the flood control level of the riverway. The situation that the flood storage and detention effect of the coal mining subsidence area can be derived only by carrying out a large number of observation experiments for a long time is omitted, the work cost is reduced, the research difficulty is lowered, the flood storage and peak clipping effect of the coal mining subsidence area under the given conditions is shown more visually, and a positive effect is achieved for relieving local flood disasters.

The invention discloses piling machines which respectively are a quick-exhaust type heavy hammer impact piling machine and a quick-exhaust type piston impact piling machine. Both the piling machines comprise two impact cylinders; each pair of impact cylinders is laterally symmetrically arranged on a bracket; each impact cylinder comprises a cylinder, an upper cover board and a lower bottom plate; each upper cover board is connected with the corresponding lower bottom plate; each cylinder is arranged between the corresponding upper cover board and the corresponding lower bottom plate; the lower bottom plates are arranged on the corresponding brackets; one impact cylinder of each piling machine is provided with a gas inlet valve and an exhaust valve; the inlet valves are positioned on the corresponding upper cover boards; the exhaust valves are positioned on the lower surfaces of the corresponding lower bottom plates; and the lower surfaces of the lower bottom plates are also provided with quick-exhaust valves. According to the invention, the quick-exhaust valves are arranged on the lower surfaces of the corresponding lower bottom plates, so that lower cavities of the cylinders in the two piling machines more smoothly exhaust and an effect of an impact force is more sufficiently played.

The invention discloses a silt loss preventing device for river ecological restoration. The silt loss preventing device comprises a river channel, wherein a silt conveying device for intercepting andconveying silt is arranged in the river channel; a flow control device positioned on the lower side of a filter screen is arranged in the river channel; the flow control device can adjust the silt conveying amount according to the water flow speed; and a storage device for storing redundant silt is arranged on the right side of the river channel. According to the silt loss preventing device, the silt in the river channel is intercepted through the intercepting filter screen arranged on the river channel, meanwhile, a water turbine positioned on the upstream of the intercepting filter screen drives a conveying mechanism to convey the intercepted silt into a conveying channel, water flow containing the silt is guided into a downstream farmland to be improved through the conveying channel, and therefore water and soil loss in the river channel is intercepted and guided, and the downstream farmland can be irrigated and improved; and meanwhile, a flow adjusting mechanism can automatically adjust the water conveying amount of the conveying channel according to the rainfall, the drought condition of the downstream farmland can be relieved, and the downstream flood disaster can be reduced.

The invention relates to a device for the flood control of the hydraulic engineering and construction of the cofferdam and dike, in particular to a flood-proof emergency bag which is used for the temporary water-enclosing engineering of flood prevention emergency and is especially applicable to cofferdam and the like. In the flood-proof emergency bag, a plurality of water bags are adhered mutually to form strips, each water bag is provided with a water injection hole and a sealing rubber plug, and the surface of each water bag is provided with the Velcro. The invention has the following advantages: 1. the efficiency of constructing the emergency flood-proof sub-embankment by using the sealing bag is high and the speed is fast so as to save time for adopting successive steps and benefit to reduce the loss of blood; 2. the damage of farmlands and plants caused by earth-fetching is reduced, the difficulty of the cleaning after blood is lowered; 3. the emergency bag can be used repeatedly, be convenient to store and transport and be especially reserved for flood-proof agencies and organizations in various regions; and 4. when necessary, the flood-proof bag which is not filled with water can be filled with air from the water injection hole and sealed to be used as the rescue equipment.

The invention provides a road with seepage and storage functions and a construction method thereof. The road sequentially comprises a subbase layer, a moisture transmission fiber layer, a cement stable base layer and a permeable cement concrete surface layer from bottom to top. The moisture transmission fiber layer is formed by laying fibers with communication holes inside, the lower ends of the fibers extend to the subbase layer, and the upper ends of the fibers extend to the cement stable base layer. When it rains, rainwater rapidly infiltrates downwards through the permeable cement concretesurface layer and is accumulated in the cement stable base layer and the subbase layer to form a micro reservoir, and then underground water is supplemented to the foundation, accumulated water on the road surface is avoided or reduced, waterlogging is reduced, flood disasters are reduced, and safety is guaranteed; in high-temperature dry weather, accumulated moisture is guided to the road surface under the capillary action of the fibers, and through the evaporation effect, the air temperature of the road surface and the ground surface can be reduced, the humidity can be increased, air pollutants can be reduced, the ecological environment can be improved, the comfort level can be improved, and the microclimate adjusting function can be achieved.

The invention relates to a drainage template and a construction method of a permeable pavement. The drainage template comprises a template body with a space inside; drainage columns communicating withthe space are arranged at the top of the template body. The construction method of the permeable pavement comprises the steps of using multiple drainage templates on a basal layer to form a drainagefoundation, wherein water collection spaces are formed between the multiple drainage templates and the basal layer; and then laying bar-mat reinforcements on the drainage foundation; pouring concreteto the drainage foundation to form a concrete layer; and forming multiple holes, which correspondingly communicate with drainage openings in the top end of each row of drainage column, in the top surface of the concrete layer so as to form a porous permeable pavement with water reservoir so that the porous permeable pavement can be applied to a surface pavement to rapidly guiding rainwater to enter the water collection space in the bottom of the drainage foundation through the drainage openings. Problems that the water permeability of an existing concrete layer surface pavement is poor and rainwater is hard to be guided into a soil layer on the downside through the concrete layer surface pavement.

The invention relates to an emergency drainage pipe for a logistic building, which belongs to the field of building equipment engineering. The basic technical scheme of the emergency drainage pipe is that a floor drainage pipe is arranged on the ground of each floor of the logistic building; a floor outlet of the floor drainage pipe is arranged on the skirting line of each floor at a position close to the floor slab; and the floor drainage pipe is connected with an outdoor yard drainage system. The emergency drainage pipe provided by the invention can take effective floor drainage technology and measures to drain lots of fire-fighting water used for extinguishing fire occurred in the logistic building or to drain lots of water flowing from various kinds of pipes damaged by a collision fault or the like in the building, thereby reducing flood loss caused by the fire-fighting water or fault water as much as possible.

The invention provides a multi-stage urban flood disaster emergency treatment method and system, and relates to the technical field of urban flood control. The method comprises the following steps of: S1, setting a water storage station; S2, acquiring the real-time water accumulation depth of the earth surface; S3, judging whether the water accumulation depth is higher than a first threshold value or not, if yes, opening a drain valve, leading the surface accumulated water to a drain pipe network, and executing S4; otherwise, closing the drain valve; S4, judging whether the water accumulation depth is higher than a second threshold value or not, if yes, opening a water pumping valve, pumping the surface accumulated water to a water storage station, and executing S5; otherwise, closing the water pumping valve; and S5, judging whether the water accumulation depth is lower than a third threshold value or not, if yes, opening a water drain valve, and draining the accumulated water of the water storage station back to the earth surface; and otherwise, closing the water drain valve. The multi-stage urban flood disaster emergency treatment method and system are simple, practical, stable and reliable, flood discharge can be conducted at urban positions where water is prone to accumulation, multi-stage emergency treatment is conducted, the urban flood disaster treatment intensity and speed are increased, and the urban flood disaster loss is effectively reduced.

An urban heat island effect relief mirror is composed of an insulation board 1 and concave mirror 2 which are integrated. A plurality of blocks of concave surfaces are formed on the insulation board in a pouring or vacuum aluminum plating method, and then a layer of reflective materials are coated on the concave surfaces to form the concave mirrors. The concave mirrors are fully distributed on the outer surface of the insulation board in a step mode. During use, the urban heat island effect relief mirror is attached to outer walls and roofs of buildings or the grounds, the insulation board is used for heat preservation, and the concave mirrors are used for reflecting sunshine. The concave mirrors have a sunshine converging effect and inwards refract the reflected light rays so that when sunshine illuminates to the concave mirrors on the buildings, the reflected light stays away from the buildings due to inward refraction and instead spreads to the space, radiation of urban sunshine is reduced, and accordingly the urban heat island effect is reduced. The urban heat island effect relief mirror improves the current hot situation of cities, balances the temperature differences between cities and suburbs, prevents suburban pollutants from entering cities, and accordingly relieves urban air pollution.

The invention discloses a cleanable water-permeable hollow kerb for receiving runoff. The kerb comprises a bottom wall 1, a left wall 3, a right wall 4, a front wall 5 and a rear wall 6, a convex block 7 is arranged on the inner surface of the upper parts of the front wall and the rear wall, a top wall 2 and the convex block are movably connected, the bottom wall, the left wall, the right wall, the top wall, the lower part of the front wall and the upper part of the rear wall are separately prepared from concrete, the upper part of the front wall is prepared from a material with a water-permeable function, and the lower part of the rear wall is prepared from a material with a water seepage function. Compared with a traditional kerb, the cleanable water-permeable hollow kerb for receiving the runoff provided by the invention can effectively absorb runoff rainwater formed by a road, avoid water accumulation of the road, slow down urban flood disasters, can supplement groundwater resources, provide moisture for green plants grown on two sides of the road, and reduce maintenance costs; and meanwhile a flushable structure is designed, so that backwashing of a high-pressure water gun canbe facilitated, the service life of the kerb can be prolonged, and the costs are reduced.

The invention provides an emergency treatment device and treatment method for urban flood control and relates to the technical field of urban flood control. The emergency treatment device comprises arack body and a water storage cavity. A fixed column is arranged on the rack body. The water storage cavity comprises a first water storage cavity and a second water storage cavity. A first water inlet, a first inductor and a first drainage outlet are formed in the first water storage cavity. A second water inlet, a second inductor and a second drainage outlet are formed in the second water storage cavity. A general water inlet, a general water outlet and an accumulated water inductor are arranged on the rack body. The emergency treatment device and treatment method for urban flood control provided by the invention are simple in structure, convenient to assemble and high in flexibility. The emergency treatment device mounted at an urban place easy to accumulate water can store and collectrainwater effectively during rainfall and then drains the rainwater into a municipal pipe network after rainfall. The emergency treatment device is independent from the drainage pipe network and is not limited by the drainage capacity of the drainage pipe network, so that the urban flood control loss is reduced effectively.

The invention relates to a coastal ecological buffer zone structure having a compounding effect. The coastal ecological buffer zone structure comprises an herbaceous permeation zone, a shrub and herbaceous plant purifying zone, an arbor-herbaceous plant purifying zone and a reed purifying zone which are sequentially arranged in the runoff direction of farmland, wherein the herbaceous permeation zone comprises a bottom bearing layer, a gravel filling zone, a soil planting zone and a water reserving zone which are sequentially arranged from bottom to top, shrubs and herbaceous plants are plantedin the shrub and herbaceous plant purifying zone, arbors and herbaceous plants are planted in the arbor-herbaceous plant purifying zone, and hygrophytes and herbaceous plants are planted in the reedpurifying zone. Compared with common buffer zones, the coastal ecological buffer zone structure having the compounding effect can achieve remarkable permeation, detention storage and farmland rainwater runoff purification and has the advantages of rainfall flood regulation and storage, water purification, landscaping, biodiversity protection, water and soil conservation, low investment and operation cost and the like.

The invention discloses a cleanable water-permeable hollow kerb for receiving runoff. The kerb comprises a bottom wall 1, a left wall 3, a right wall 4, a front wall 5 and a rear wall 6, a convex block 7 is arranged on the inner surface of the upper parts of the front wall and the rear wall, a top wall 2 and the convex block are movably connected, the bottom wall, the left wall, the right wall, the top wall, the lower part of the front wall and the upper part of the rear wall are separately prepared from concrete, the upper part of the front wall is prepared from a material with a water-permeable function, and the lower part of the rear wall is prepared from a material with a water seepage function. Compared with a traditional kerb, the cleanable water-permeable hollow kerb for receiving the runoff provided by the invention can effectively absorb runoff rainwater formed by a road, avoid water accumulation of the road, slow down urban flood disasters, can supplement groundwater resources, provide moisture for green plants grown on two sides of the road, and reduce maintenance costs; and meanwhile a flushable structure is designed, so that backwashing of a high-pressure water gun canbe facilitated, the service life of the kerb can be prolonged, and the costs are reduced.

The invention relates to a vertically upward collected-rainwater infiltrating irrigation system with porous wicks for a green roof. The infiltrating irrigation system is located in a planting frame inwhich a vegetation layer, a soil matrix layer, a filtering layer and a water storage layer are provided in sequence from top to bottom. Porous wicks are further provided, including a long straight bar-shaped first porous wick and a ring-shaped second porous wick. One end of the first porous wick is connected with a plurality of long bar-shaped branch porous wicks, and the other ends of the plurality of branch porous wicks are communicated with the second porous wick, respectively, and are disposed on the second porous wick at intervals. The second porous wick is located in the soil matrix layer, and the first porous wick sequentially penetrates through the soil matrix layer and the filtering layer into the water storage layer. The vertically upward collected-rainwater infiltrating irrigation system with porous wicks for a green roof provided in the invention is characterized by water resource conservation, high water supply uniformity, space saving, low investment cost and the like while utilizing rainwater, as compared with an existing green roof irrigation mode.

The invention discloses a multi-step daily runoff forecasting method based on meteorological information and a deep learning algorithm, and the method comprises the steps: carrying out the feature selection of a meteorological data set through employing a maximum mutual information coefficient (MIC) method, and taking the selected feature as a prediction factor candidate input of a model; adopting a cross-correlation function (CCF) and a partial autocorrelation function (PACF) to select historical lag data of observed runoff and rainfall as predictive factor candidate input of the model; in the second stage, firstly performing data scale scaling on the selected predictive factor, and then dividing the data set into a training set, a verification set and a test set; in the third stage, calibrating GBRT model parameters through a grid search algorithm, and then carrying out forecasting on a test set through optimized parameters. Tests show that the GBRT-MIC can well perform runoff prediction in a prediction period, and research results have important significance in assisting a power plant in making a power generation plan in advance, reducing hydropower abandoned water, increasing hydropower electric quantity and improving the hydropower scientific scheduling level.

The invention provides a preparation method of a prefabricated foam fiber self-repairing concrete public pipeline cover plate. The preparation method comprises the following steps that 10) a steel formwork is prepared according to the preset size; 20) a cover plate steel reinforcement framework is built in the steel formwork; 40) foam fiber self-repairing concrete is poured into the steel formwork and vibrated to be uniform; and 50) the steel formwork is dismantled after pouring forming, and the prefabricated foam fiber self-repairing concrete public pipeline cover plate is obtained after natural curing. The cover plate prepared by the preparation method disclosed by the invention is light in weight, does not need to be matched with heavy machinery during construction and can be completed by a small amount of manpower. The cover plate is of a porous structure and is good in water permeability, water can be rapidly drained when the rainfall is suddenly increased, and urban flood disasters are reduced. The cover plate can be pre-prepared before construction, and during construction, the cover plate can be spliced and paved on a pipeline along the length direction of the pipeline, so that the construction is convenient. When the pipeline is maintained, only one piece of cover plate needs to be smashed or pried open, the other pieces of the cover plates can be uncovered in sequence, and the whole road surface does not need to be damaged.

The invention discloses a biological detention facility internal drainage system achieving rainwater dual-effect control and an implementation method. A drain pipe and a downflow weir are additionally arranged in a biological detention facility to serve as an auxiliary drainage facility so as to achieve the dual-effect control targets of regulation of the rainwater runoff volume and reduction of the peak flow. Bottom drain pipe and downflow weir design flow design steps are put forward according to the runoff volume in a sponge city construction technology guide and rainwater peak flow control standards in a specification for outdoor drainage design (2014 edition). A computing method of bottom drain pipe and downflow weir key parameters is obtained through reckoning according to related hydraulic formulas and rainfall characteristics in humid areas. By means of the method, the defect that in the past, people only take the runoff volume as the control target is overcome, and the method can serve as an important design basis of a southern humid area biological detention facility drainage system and provides a reference for sponge city facility construction in other areas.

A device for blocking a dike breach is used for rapidly piling and blocking the dike breach, and consists of a movable platform, a combined steel pipe pile, a support used for clamping the combined steel pipe pile, a fast-draining type piston impact pile driver, a fast-draining type heavy hammer impact pile driver, a power device and the like. According to the device, the dike breach can be blocked conveniently, about 90% of water can be blocked after the piling is finished, and is construction is rapid and convenient.