336results about How to "Reduce runoff" patented technology

An apparatus for producing a foam surfactant suitable for a bovine teat dip having a compressor for air pressurization of a surfactant solution containing a germicide, disinfectant, biocide, etc., wherein the air-surfactant mixture is passed through a flow or line mixer to a foam holding cup adjacent the teat are, and wherein the mixture is expanding in the holding cup to produce an adherent surfactant foam product with reduced run off, which both protects and reduces infection of the teat and surrounding udder area.

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.

An apparatus and method for producing a foam surfactant suitable for a bovine teat dip comprises air pressurization of a surfactant solution containing a germicide, disinfectant, biocide, etc., passing the air-surfactant mixture through a flow or line mixer to a foam holding cup adjacent the teat area and expanding the mixture in the holding cup to produce an adherent surfactant foam product with reduced run off, which both protects and reduces infection of the teat and surrounding udder area.

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.

The invention discloses a deep-ploughing-free compound microbial fertilizer, and each ton of the fertilizer contains 10-25 kg of polyacrylamide, 10-30 kg of bacillus subtilis, 5-25 kg of streptomyces microflavus, 5-20 kg of bacillus laterosporus, 1-4 kg of diethylaminoethyl hexanoate, 20-50 kg of a polyaspartic acid, 5-25 kg of EDTA (Ethylene Diamine Tetraacetic Acid), 10-30 kg of urea, 5-20 kg of potassium humate, and the balance of organic filler. The fertilizer disclosed by the invention is high in microbial activity and strong in biological stability, can be used for effectively improving the soil aggregate structure, eliminating the soil hardening, enhancing the infiltration capacity of soil, and improving the cushioning properties of soil, and can be used for alleviating the damages on crops caused by soil secondary salinization due to excess fertilization; and the fertilizer disclosed by the invention also can be used for promoting the growth and development of beneficial microorganisms in the soil, thereby improving the utilization rate of the fertilizer and promoting the root growth of crops, so that roots are developed, the disease resistance of crops is enhanced, and the yield-increasing effect is obvious.

The invention discloses a method for preventing water erosion desertification by using biological crust, which is to artificially inoculate a biological crust resource onto bare soil surface of a water erosion desertified area and cultivate the biological crust to allow the biological crust to cover the bear soil surface. The method comprises the following steps:1) selecting well developed natural biological crust, and shoving 10 to 30-millimeter-thick crust layer on surface for later use; 2) drying the collected biological crust in shade, removing other materials, crushing, fully stirring and uniformly mixing to obtain the biological crust resource; 3) mixing the prepared biological crust resource with fine soil according to a ratio of 1:(1-2), uniformly spreading the mixture on the soilsurface to be inoculated, covering a small amount of fine soil, and fully watering after the fine soil is covered; and 4) controlling a proper condition to promote the growth of the biological crust,namely watering, topdressing, killing pests and weeding. With the method of artificial inoculation and cultivation, a high-coverage biological crust can be formed in a short period, and the formed biological crust has obvious water and soil holding function; and the method is an effective method for treating water erosion desertification.

The invention provides a novel vegetation shallow trench and a method for processing runoff rainwater by using the novel vegetation shallow trench. The novel vegetation shallow trench comprises a vegetation layer and a shallow trench, wherein the shallow trench comprises a shallow trench bottom (1) and a slope (2), and an infiltration / drainage pipe (3) is buried in the shallow trench bottom (1). When surface runoff rainwater (9) enters the shallow trench and flows along the slope, the runoff can be purified through retention, filtering of vegetation (7), absorption and permeation, a part of runoff rainwater accumulated at the shallow trench bottom (1) enters a filter material layer surrounding the infiltration / drainage pipe (3) through infiltration effect, and the filtered runoff rainwater is drained into a receiving water body or other processing facilities through the infiltration / drainage pipe (3). Since the infiltration / drainage pipe (3) is designed at the shallow trench bottom, the novel vegetation shallow trench is remarkably improved in transmission, filtering and infiltration capabilities, has the advantages of small floor space, compact structure and strong contaminant blockage capability, and thus is applicable to a rainwater runoff pollution control system for high-density areas of a city.

The invention provides an ecological restoration method for soil in a chemical industrial area. The ecological restoration method includes the following steps that pollution indexes of the soil in the chemical industrial area are detected; deep ploughing is conducted, clay not smaller than 30 cm under the ground surface is turned up, and the soil is loosened and watered to be wet; a compound microorganism bacterium agent is thrown into the soil with the dosage ranging from 30 ppm / m<2> to 50 ppm / m<2>; terrestrial invertebrates are thrown into the soil; plants are planted on the soil; the pollution indexes of the soil in the chemical industrial area are detected; and the above steps are repeated every other 30 days to 60 days till the quality of the soil meets the requirements. By means of the ecological restoration method for the soil in the chemical industrial area, biological diversity of the soil is restored, the quality of the soil is improved fundamentally, the self-purification capability of the soil is restored fundamentally, and the pollution phenomenon is effectively eliminated. The method is used for strengthening the self-restoring capability and the self-cleaning capability of the nature, and meanwhile the ecological restoration method has the beneficial effects that the running cost is low, and the pollution treatment effect is good.

The invention relates to a formula and a film-coating preparation method for biological carbon coated urea. The biological carbon coated urea is characterized in that the outside of a fertilizer core is coated with solid-powder-shaped biological carbon, sulfur, dicyandiamide and bentonite by using granular urea with a size of 3 to 4 mm as the fertilizer core and oxidized corn starch as bonding liquid, wherein the above-mentioned components have weight proportions as follows: 50 to 80 parts of the urea, 10 to 30 parts of the biological carbon, 2 to 10 parts of the sulfur, 2 to 3 parts of the dicyandiamide, 2 to 3 parts of the bentonite and 3 to 5 parts of the corn starch. The film-coating preparation method for the biological carbon coated urea comprises the following steps: placing the urea into a disc granulator, carrying out preheating with hot air for 5 min, spraying the bonding liquid on the surface of the urea with a high-pressure spray gun, blowing the hot air for 3 to 5 min, adding a mixed film-coating material into the disc granulator in batches and carrying out rotating for 10 min, then spraying the bonding liquid again, and carrying out drying in the air so as to obtain the biological carbon coated urea. According to the invention, the biological carbon can improve physical and chemical properties of soil and adsorb ammonium-nitrogen and nitrate-nitrogen ions; the dicyandiamide reduces nitrification; and S4O62- generated by decomposition of the sulfur can delay decomposition of the dicyandiamide, and H+ and S2O32- generated by decomposition of the sulfur can inhibit nitrification. The biological carbon coated urea provided by the invention has the advantages of low ammonia volatilization, slow generation of nitrate nitrogen, low nitrogen loss and high nitrogen effectiveness.

The invention discloses a preparation for inhibiting soil nitrogen loss as well as a preparation method and an application thereof. The preparation is prepared from the following raw materials in percentage by mass: 1-40% of 2-chloro-6-trichloromethylpyridine, 0-5% of hydroquinone, 5-20% of accessory ingredient and 35-90% of solvent. The preparation disclosed by the invention can be evenly dispersed in an aqueous phase, and the preparation and a nitrogenous fertilizer are evenly applied into soil so as to effectively alleviate speed of urea to be hydrolyzed into ammonia under the urease action and also effectively inhibit the process of oxidizing NH<4+> into NO<3->; NO<2-> and NO<3-> leaching loss is reduced, and NOX and N2 can be further prevented from escaping because of denitrification; and the utilization rate of the nitrogen fertilizer is improved so as to improve the quality and the yield of the crops and lighten pollution to environment by the nitrogen fertilizer.

A combined cultivation method for water and soil conservation for sloping farmlands relates to cultivation methods for water and soil conservation and solves the problem that using the single cultivation technique for holding water is unsatisfactorily effective. The combined cultivation method includes: firstly, adjusting ridges of sloping farmlands on downward slopes and inclined slopes under ridge plowing adjusted into transverse slope ridges, and adopting contour farming and belt planting; secondly, building ridges, and planting protective plant belts on the ridges; thirdly, subsoiling forfarming; fourthly, performing furrow damming; and fifthly, performing no-tillage conservation tillage. Furrow subsoiling and furrow damming are technically combined and integrated according to soil and weather characteristics of a black soil area, so that water and soil loss is reduced or avoided for sloping farmlands to the greatest extent, water and soil are conserved, water utilization rate isincreased, and crop yield is increased evidently. By the method, soil saturation and infiltration speed ratio is increased by 24.1% in processing treatment, water utilization rate is increased by more than 15%, crop yield is 30kg per mu, and 100 Yuan per mu is increased..

The invention discloses a compartment trench controlled irrigating paddy rice water-saving culturing method. The culturing method comprise she following steps of ploughing the soil, digging trenches, forming compartments, direct broadcasting or transplanting paddy rice, managing moisture and managing the field. A compartment and trench mode is employed for paddy rice plantation; based on different paddy rice growth periods, a circulating irrigation process with humid compartment surface soil and formed by full trench water-half trench water or full trench water-dry trench is achieved; paddy field compartment trench water level can be visually tested and compartment surface soil humidity can be determined, so irrigating time and amount can be determined and present intermittent irrigation technology can be optimized; irrigation water can be conserved; rain water and irrigation water utilization rate can be improved; and paddy rice yield can be maintained or improved.

The invention discloses an efficient slow-release urea. The efficient slow-release urea is prepared by coating urea by utilizing a coating slow-release solution and drying and solidifying the coated urea, wherein the coating slow-release solution consists of the following components in percentage by mass: 1 to 5 percent of gamma-polyglutamic acid, 1 to 5 percent of nitration inhibitor, 0.5 to 5 percent of adhesive, 0.05 to 2 percent of surfactant and the balance of water; and the pH of the efficient slow-release urea is 5.5 to 6.5. The invention also discloses the preparation method of the efficient slow-release urea. The gamma-polyglutamic acid in the efficient slow-release urea has the effects of coating and chelating the urea and the nitration inhibitor, so that separation of the nitration inhibitor and a nitrogen fertilizer is reduced, leaching and runoff losses of nitrate nitrogen are reduced, one-time fertilization can be realized, top dressing is not required, the utilization rate of the fertilizer can be improved by over 15 percent, and the yield of the crops is increased by 10 to 30 percent.

A soil conditioning device having a series of peripheral ridge members having a leading and trailing prow shaped surface circumscribing a disc, wheel or drum. Optionally the prow shaped peripheral ridge members are joined by sub-ridge members forming a single ridge of varying heights circumscribing the disc, wheel or drum. The invention is also of a method for creating a permeable soil surface using the apparatus herein.

The invention discloses a rainwater garden system for community rainwater flow diversion, peak clipping and ecological purification. The rainwater garden system comprises a community roof rainwater flowing-through facility, a reverse U-shaped buffer flow division pipe, a green land rainwater garden facility and a rainwater well, wherein the community roof rainwater flowing-through facility is connected with the green land rainwater garden facility through two paths; one path is the direct connection with the green land rainwater garden facility, and the other path is the connection with the green land rainwater garden facility through the reverse U-shaped buffer flow division pipe; and the green land rainwater garden facility is also connected with the rainwater well. The reverse U-shaped buffer flow division pipe is used, and a water storage layer, a covering layer, a planting layer, a transition layer, a filling material layer, a water discharge layer and matched pipelines which are sequentially and downwards provided by the downward green land rainwater garden facility from the ground are used, so that the rainwater garden system has the effects of early-period rainwater processing, rainfall runoff flow division, peak clipping and purification regulation and control.

The invention discloses a rainwater penetrating-discharging integrated ecological system, which comprises penetration inspection wells distributed on the ground of residential areas, penetration drainage ditches which are in a network shape and connected on all the penetration inspection wells and transversal connecting pipes between the penetration inspection wells and the penetration drainage ditches. Permeable holes are formed on the side walls and at the bottoms of the penetration inspection wells, a gravel layer is laid in the peripheries of the penetration inspection wells, a layer of permeable geotextile is laid in the peripheries of the gravel layer, wellheads of the penetration inspection wells are provided with dirt-catching and sewage-blocking baskets therein and permeable well covers are covered on the wellheads; permeable holes are formed on the side walls of the penetration drainage ditches, the peripheries of the penetration drainage ditches are provided with the gravel layer, the peripheries of the gravel layers are provided with a layer of permeable geotexile, and the top parts of the penetration drainage ditches are covered with grate covers of the drainage ditches. The invention has the advantages of simple design principle and convenient construction. The invention can save water consumption, reduce rainwater runoff in a city and relieve municipal drainage pressure, thereby not only realizing early draining of rainwater, purifying water, but also realizing the penetration of rainwater, conserving underground water source and beautifying the peripheral ecological environment.

The invention relates to a planting method for crops, in particular to a wide-row flat planting protective tillage planting method for maizes. The planting method comprises the following seven steps of: performing land preparation, sowing, rolling after sowing, weeding by pesticides, subsoiling mechanically and performing side deep fertilizing, preventing and controlling diseases and insect pestsand harvesting mechanically. In the planting method, the conventional 60-centimeter uniform ridge planting mode is changed into a flat planting mode of 80-centimeter row pitch and 20-centimeter row spacing, and ventilating and light-transmitting space of the crops is increased; the conventional shallow intertillage and shallow fertilization mode is changed into a mechanical deep scarification anddeep topdressing mode, namely the conventional three-shovel three-time intertillage management and shallow fertilization operation is changed into one-time deep scarification and deep topdressing operation, so operation links are reduced, and the production cost is reduced; the conventional sowing mode is changed into a zero-tillage sowing mode, so the evaporation of soil moisture is reduced, andthe capacity of drought resistance and soil moisture conservation is improved; the conventional mode that harvested low stubbles are crushed to return to a field into a mode that mechanically-harvested high stubbles are rotten naturally to return to the field; and before sowing, seeds are processed by using a plasma seed processing technology to improve the germination percentage of the seeds.

The invention discloses a multidimensional ecological drainage system for intercepting and controlling separate system rainwater pollutants into a river. The system is arranged on one side of a river bank and takes a stair-step shape along the river bank; rainwater in pipe networks flows into a first-stage water drop platform by rain-water pipes, enters a storage pond, flows into an ecological buffer zone by a second-stage water drop platform, and lastly flows into a plant growth detention pond; and the first-stage water drop platform and the ecological buffer zone are slope-shaped, and plants are planted in the plant growth detention pond. The system not only ensures drainage, but also reduces the risk that rainwater polluted run-offs directly flow into the river, reduces impact and damage to water quality of the water body in a river channel, effectively controls the pollutants in the river, effectively improves the water environment, and enhances the urban water landscape value.

The invention relates to a method and system for comprehensively purifying, collecting and utilizing overpass rainwater. The system disclosed by the invention comprises a rotational flow separation module, a high-efficiency purification module and a plastic water storage module. According to the method, based on the principle of gravity rotational flow sand setting technology and absorption, filtration and purification technology, emission, collection and purification of overhead overpass rainfall runoff are realized, suspended particles and organic and inorganic pollutants are respectively eliminated efficiently; furthermore, water storage and reuse are carried out to form integrated comprehensive technology for collecting and reusing purified rainwater; multiple effects such as fast elimination of rainwater on an overpass, water-saving irrigation of a green belt below an overpass and pollution control of overpass roadway runoff can be achieved simultaneously; and the method and the system for comprehensively purifying, collecting and utilizing overpass rainwater disclosed by the invention have wide application prospect in the fields of municipal construction and non-point source pollution control.

The invention discloses a special water retention fertilizer for sweet potatoes and a preparation method thereof. The special water retention fertilizer for sweet potatoes is prepared from the following raw materials in parts by weight: 7-12 parts of available nitrogen (N), 6-9 parts of available phosphorus (P2O5), 20-25 parts of available potassium (K2O), 8-10 parts of sodium polyacrylate, 2-5 parts of polyacrylamide and 5-9 parts of bentonite. The special water retention fertilizer for sweet potatoes has the advantage of scientific nitrogen-phosphorus-potassium nutrient proportion, integrates both fertilizer and water, combines nutrition and water retention, and can enhance the water and fertility retention properties of soil and the water / fertilizer utilization efficiency of the sweet potatoes. When being spread as a base fertilizer at one time before sweet potato ridge forming, the special water retention fertilizer for sweet potatoes can promote the sweet potato root system to absorb water in the rooting and seedling stage, increase the growth rate of the sweet potatoes in the early stage, shorten the field ridge seal time of the sweet potatoes, and reduce the field moisture evaporation; and the contained nutrients are slowly released to prevent the stems and leaves of the sweet potatoes from vigorous growth and promote fruiting of the sweet potatoes, thereby enhancing the yield of the dry farming sweet potatoes.

The invention relates to a method for constructing a road runoff pollution control greening system. The method comprises the following steps: designing and constructing a greening pollutant intercepting system on a hardened road with a greening pollutant intercepting area besides, and setting an ecological filter trench between a motor way and a sidewalk to form a pollutant intercepting green belt; filling the pollutant intercepting green belt with filter materials, setting a planting layer on the top of the pollutant intercepting green belt, and setting a grass planting trench on one side, which is close to the green belt, of the sidewalk, wherein fillers fill the grass planting trench, and a planting layer is arranged on the top of the grass planting trench; and setting a retention pond adjacent to the grass planting trench, setting a turf slope at the periphery of the retention pond, and forming a rainwater retention area in the middle of the pond, wherein aquatic plants are planted in the rainwater retention area. Compared with the prior art, the method has the advantages that over 30 percent of pollutants can be removed, and water can be purified.

An apparatus for producing a foam surfactant suitable for a bovine teat dip comprises means for air pressurization of a surfactant solution containing a germicide, disinfectant, biocide, etc., means for passing the air-surfactant mixture through a flow or line mixer to a foam holding cup adjacent the teat area and means for expanding the mixture in the holding cup to produce an adherent surfactant foam product with reduced run off, which both protects and reduces infection of the teat and surrounding udder area.

A soil conditioning device having a series of peripheral ridge members having a leading and trailing prow shaped surface circumscribing a disc, wheel or drum and a method of use. Optionally the prow shaped peripheral ridge members are joined by sub-ridge members forming a single ridge of varying heights circumscribing the disc, wheel or drum.

The invention relates to sponge city construction, in particular to application management of a BIM technology to sponge city construction. All modules of a sponge city BIM site construction management module are in communication connection with a BIM host. A sponge city monitor, maintenance and deploy management module comprises a data detection operating maintenance module, a riverway water level monitor module, a green land area monitor module, a green land tax-inclusive monitor module, a rainwater collection monitor module, a precipitation amount monitor module, an underground water level monitor module, a reservoir water level monitor module, a wind speed and temperature monitor module, a water source deploy module and the like. All the modules of the sponge city monitor, maintenance and deploy management module are in communication connection with the BIM host. A construction progress management module manages all construction progresses and construction management through the BIM host. A green land water evaporation simulation module simulates different vegetation green lands through the BIM host. According to the application management, design, simulation, construction and management of all sponge city construction are carried out through the BIM, and drainage, irrigation and other management are carried out by monitoring data of all positions.

A method for applying a soil stabilizer, to soil wherein the soil stabilizer is intermixed, impregnated, and / or applied to solid carriers.

A soil adherent pellet is detailed that includes a soluble calcium ion source, a magnesium ion source, or both present in an amount ranging from 15% to 99.9% by weight of a total dry weight of the pellet and a binder present in an amount ranging from 85% to 0.1% by weight of the total dry weight of the pellet. The pellet having a mean pellet domain size and a pellet surface. The soil adherent pellet is well suited for flocculating clay within the soil and delivery of an active ingredient with reduced runoff compared to prior art broadcast particles. A soil adherent pellet is also provided having a soluble calcium and / or magnesium ion source that is polycrystalline and carries therewith an active ingredient.

The invention relates to a road surface deceleration strip. The road surface deceleration strip comprises a shell, wherein the front end of the shell is hinged with a rotating shaft fixed at the upper end of the slope road surface, a spring is installed at the tail end of the shell and is sheathed on a limiting pile fixed at the lower end of the slope road surface, a water containing bag is arranged in the shell, the bottom of water containing bag is tightly attached on the road surface, the top of the water containing bag is tightly attached on the inner surface of the shell, a water inlet board is arranged at the front end of the water containing bag, a water inlet is formed in a water containing bag body behind the water inlet board, a water inlet membrane section is suspended at the top of the inner wall of the water inlet, water drain holes are respectively formed in the two sides of the tail part of the water containing bag, and are in butt joint with a water drain pipe, and a water outlet membrane section is suspended at the tops of the outer wall of the water drain holes. The road surface deceleration strip has the following advantages that running water on the road surface can be stored and held, the running water amount of the road surface is reduced, meanwhile, the running water on the road surface can be transferred to green belts on the two sides of a road, the plant process of the running water during the initial period can be implemented, and the surface source pollution load of the road surface can be reduced.

The invention discloses a tree pool device with rainwater infiltration, storage and purification functions.According to the tree pool device, a pretreatment water tank (8) located below a rainwater perforated strainer (9) at the edge of a locomotive pavement and a collecting water tank (4) located below a pedestrian pavement are installed in a substrate layer (15), overflow holes (12) communicated with the substrate layer are formed in the upper portion of the pretreatment water tank (8), slow infiltration holes (14) are formed in the lower portion of the pretreatment water tank (8), and the top of the pretreatment water tank (8) is further provided with an overflow pipe (10) communicated with a municipal rainwater pipe (18); the bottom of the collecting water tank (4) is communicated with a perforated pipe (3), and a drainage pipe (6) is installed on the side wall of the collecting water tank (4) and communicated with the municipal rainwater pipe (18) laid in an original soil layer (17).The tree pool device with the rainwater infiltration, storage and purification functions has the advantages that the water infiltration and water storage capacities of a tree pool are enhanced, the function of drainage after purification is achieved, the runoff peak value is delayed and reduced, the runoff volume is reduced, and the requirements of vegetation maintenance and subsequent rainwater reuse are met.

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.