56results about How to "Good water storage" patented technology

The invention discloses a multifunctional system for rainwater infiltration, collection and storage and purification of a sponge city.The system comprises a bioretention pond and water storage wells.Firstly, appropriate positions are selected for digging of a foundation pit of the bioretention pond and the water storage wells, and the portions, 5-10 cm away from the two sides of the bioretention pond, of the road surface are paved with opened vertical curb belts.The bioretention pond sequentially comprises a gravel covering layer, a vegetation planting soil layer, a biochar packing layer and a gravel drainage layer from top to bottom, and the periphery and bottom of the bioretention pond are both paved with anti-seepage thin film.An overflow pipe is laid on the gravel drainage layer, an upper end overflow opening is 5-10 cm higher than the gravel covering layer, and the lower end of the overflow pipe is connected with a municipal drainage pipe network.The system can be used at the places such as residential areas, schools, parking lots, parks and roads, not only can rainwater be stored, but also the content of pollutants such as nitrogen, phosphorus and heavy metal can be reduced, the purpose of recycling is achieved, city water logging is effectively relieved, and the rainwater use efficiency is improved.

The invention discloses a method capable of being used for rain water seepage-filtering, collection and storage and purification in a sponge city.The method comprises the steps of firstly, selecting an appropriate position, excavating a foundation pit of a biological detention pond and water storage wells, and laying open vertical-rim stone strips 5-10 cm away from the two sides of the road surface of the biological detention pond.The biological detention pond comprises a rubble cover layer, a vegetation planting soil layer, a charcoal filler layer and a gravel drainage layer in sequence from top to bottom, and seepage-proof films are laid at the periphery and the bottom of the biological detention pond.An overflow pipe is laid on the gravel drainage layer, an overflow port in the upper end is 5-10 cm higher than the rubble cover layer, and the lower end is connected with a municipal drainage pipe network.The system can be applied to the places such as a residential area, a campus, a parking lot, a park and a road, rainwater can be collected and stored, the content of pollutants such as nitrogen, phosphorus and heavy metal in the rainwater can be reduced, the recycling purpose is achieved, finally, urban inland inundation is effectively alleviated, and rainwater utilization efficiency is improved.

The invention discloses a plate split mounting type road surface manufactured by utilizing waste plastics. The left sides and the right sides of road surface plates are provided with bulges and grooves in various shapes so that every two adjacent road surface plates can be inserted together in a bearing mode, drilling holes allowing steel strands to penetrate through are formed in the upper sidesand the lower sides of the road surface plates, the compactness and the stability of the road surface can be ensured when the steel strands are connected together. A plurality of grooves are formed inthe sides, close to the roadbed, of the road surface plates, and can be used by cooperating with the plate split mounting type roadbed, and a more stable effect can be achieved by inserting the bulges on a roadbed block into the grooves in the road surface plates; and the road surface plates can further be manufactured to be hollow so that various cables and pipelines can be placed conveniently.In addition, in order to conveniently place the pipelines, the road surface plates with the open lower portions further can be manufactured, and grooves can be additionally formed in the position, incontact with the roadbed, of the bottom face so as to improve the stability.

The invention relates to a high-performance water storage material and a preparation method thereof. The water storage material is prepared from, by weight, 46.75-80% of a clay raw material (by solid), 15.75-50% of a biomass raw material, 0.5-3% of a high temperature liquid phase promoter, 0-1% of a high temperature foaming agent and 0-0.25% of a plasticizer. The preparation method comprises the following steps: weighing the clay raw material containing silicate and aluminate, the biomass raw material, the high temperature liquid phase promoter, the high temperature foaming agent and the plasticizer according to the above mass proportions, fully and uniformly stirring the weighed raw materials, placing the obtained mixture in a granulator, molding circular or elliptical granules with the particle sizes being 2-5 cm, and drying and sintering the granules to obtain the water storage material. The high-performance water storage material obtained through optimizing and combining in variousfoaming modes has a good water storage performance, and has a water storage rate reaching 80-105%.

The invention discloses a powder ridge deep-cyclone water-storage seedling-retaining growth promoting and cultivation method in arid and semi-arid regions. The middle of a cultivating area is deep-ploughed by using a rotary tillage spiral type machine while the two sides of the cultivating area are shallow-ploughed; the soils are milled at the same time; the soils are naturally ridged after the soils are rotated in a deep mode and loosened so as to form a T-shaped ridge land of which the two sides are surrounded by shallow loosening soils and the inclined surfaces have a certain angle. Drainage channels are arranged in a non-cultivation area, a film covers the ridge land, planting holes are formed in the ridge land, and a water-storage tank for storing water and retaining water is established around the planting holes; meanwhile, standardization farm operations such as fertilizer application and pesticide application are carried out, so that the operation is finished mechanically and integrally once, and the labor efficiency is greatly improved; by using the cultivating method, the water content of the soil is effectively increased by more than 30 percent, the production of crops is increased by more than 40 percent, and the economic benefit is obviously increased; moreover, a new ecological balance system is established, and the method has a great popularization value in the northwest arid region.

The invention provides a manufacturing method of bricks with water permeability and water storage ability. Kiln phosphoric acid tailings which have a large number of pore structures and higher strength are adopted as main raw materials, and cement, binder and auxiliary materials are added to manufacture the environment-friendly bricks with water permeability and water storage ability and higher strength. The kiln phosphoric acid tailings have multiple pores and good water permeability and water storage performance, and the invention fully utilizes the above characteristics to manufacture bricks with good water permeability and water storage performance; the stored water can account for over 25% of the weight of the brick, and simultaneously the pollution of phosphoric acid tailings on the environment is reduced and the product additional value is improved.

The invention discloses a sponge urban biological retention facility and a construction method thereof. The sponge urban biological retention facility is sequentially provided with a regenerated aggregate layer, a biological filter medium layer and a biological cover layer from bottom to top on the upper surface of a plain soil base layer. Wherein the recycled aggregate layer sequentially comprises a lower recycled aggregate layer, a middle recycled aggregate layer and an upper recycled aggregate layer from bottom to top. The water absorption capacity, water storage capacity and seepage capacity of the sponge urban biological retention facility are all good, and the transition between the upper recycled aggregate layer and the lower recycled aggregate layer can be realized by setting the middle recycled aggregate layer, which not only connects the upper recycled aggregate layer with the lower recycled aggregate layer reasonably in particle size, but also greatly improves the overall water seepage effect of the recycled aggregate layer; At that same time, the recycle aggregate of brick and concrete construction waste is adopted to replace the natural material such as limestone, sandand gravel, so that the seepage capacity and water storage capacity of the biological retention facilities are greatly improved, and the construction method is simple, the production cost is low, waste is chan into treasure, and low-carbon environmental protection is achieved.

The invention relates to artificial soil particles used for cultivating flowers, which is characterized in that: the particles used for cultivating the flowers mainly consist of two parts of nutrient particles and filling particles, wherein, the texture of the nutrient particles which have structures with a plurality of air vents is hard while the texture of the filling particles which have structure with a plurality of compact air vents is soft, besides, the volume of the nutrient particles is larger than the volume of the filling particles. The nutrient particles also contain microorganisms for promoting the growth of plants. When in use, the cultivation particles of the invention not only can promote newly-cultivated flowers to grow normally and more quickly but also have good water reserve performance and air permeability; furthermore, the performance is stable for long time use without turning rot or going bad or suffering from insect pests, thus being quite applicable to planting potted plants of flowers and the like, and being particularly applicable to being used at application occasions where the potted plants are adopted for purifying air.

The invention discloses a method for preparation of a cation membrane for diffusion dialysis with mesoporous silica. Mesoporous silica is prepared by a template method, and then the cation membrane special for diffusion dialysis is prepared from mesoporous silica by direct blending. The obtained cation membrane comprises a hydrophobic polymer area, a fixed ion-containing active area and a gap area. The mesoporous silica prepared by the method provided by the invention contains a lot of exchange groups, can improve the ion flux of the membrane and ensure the separation effect, and at the same time can improve the mechanical properties and thermodynamic properties of traditional polymers. The cation membrane for diffusion dialysis prepared by the invention has a water content (WR) of 136.4%-193.7%, an ion exchange capacity of 0.1-0.3mmol / g, an OH<-> dialysis coefficient UOH of 0.008-0.025mol / h, and a separation coefficient of 11.5-40.

The invention relates to a subsoiler of planetary driving type, mainly and structurally comprising a gearbox, two cruciform planet carriers, a central shaft, a sun wheel, a middle wheel, planet wheels, cutter shafts and coulters. The centers of the cruciform planet carriers are respectively fixed at both ends of the central shaft, the sun wheel is fixedly mounted on the central shaft, the cutter shafts are mounted in parallel among eight end points of the two cruciform planet carriers, the planet wheels are respectively and fixedly mounted on the cutter shafts, and the coulters are vertically distributed on the cutter shafts which are also driven by the planet wheels to autorotate while revolving around the sun wheel along with the cruciform planet carriers so that the coulters vertically distributed on the cutter shafts are constantly in vertical states, and the coulters on the cutter shafts can vertically exit after vertically cutting, pitting and subsoiling soil by turns. The invention has the advantages of simple and reasonable structure, low production cost, small traction resistance and pitting resistance, low driving power, obvious energy-saving effect, convenient adjustment of loosening depth and density, and the like, is a pitting-type subsoiler with good subsoiling effect and fills the gap of pitting-type subsoiling equipment.

The invention belongs to the technical field of ecological environment engineering, and particularly relates to a method for comprehensive treatment of spartina alterniflora through terrace type flooding surrounding and mowing. The method comprises the steps that in a spartina alterniflora treatment area, a dam perpendicular to the coastline and a dam parallel to the coastline are constructed respectively, the dams are connected with each other, the treatment area is enclosed into a closed area, the overground part of the spartina alterniflora in the area is mowed in the late elongation stage, the dams store tide water during flood tide, the stubbles of the mowed spartina alterniflora in the treatment area form terrace type flooding surrounding until no new spartina alterniflora germinates any more, and the dams are removed to restore the natural environment of a beach. The method has the advantages that the method is simple and easy to operate, the water storage performance of the dams is good, the applicability is strong, the method is not only suitable for small-range spartina alterniflora treatment, but also suitable for large-range spartina alterniflora treatment, the treatment effect of the spartina alterniflora is good, the cost is lower, the influence on the environment is small, and the ecological environment of the beach is easy to restore.

The invention relates to a coal mine underground reservoir position selection method based on water resource transferring paths. The method comprises the steps that a geologic structure is explored before coal mine exploiting; according to the geologic structure, areas with stable geologic structures are taken as alternative areas; water diversion fissure zone heights of various alternative areasare calculated, and the alternative areas with the water diversion fissure zones reaching overlying water-bearing rock stratums after stable exploiting are taken as new alternative areas; judgement and flow distribution statistics are carried out on the water resource transferring paths, and the alternative areas with flow greater than preset flow are selected as new alternative areas; disintegration resistance indexes of rock samples and permeability coefficients of fractured rock masses in the new alternative areas are measured, and the alternative area with the disintegration resistance index greater than or equal to a preset disintegration resistance index value and the permeability coefficient less than or equal to a preset permeability coefficient value is selected as a constructionposition of a coal mine underground reservoir; the coal mine is exploited, and the coal mine underground reservoir is constructed.

The invention provides a bioactive urban sewage treatment plant excess sludge matrix composite vegetation carpet and application. The composite vegetation carpet is composed of an upper structure layer, a vegetation layer, a nutrition layer, a protection layer and a lower structure layer; the upper structure layer and the lower structure layer are both woven by hemp fiber of waste jute bags, and grids of the upper structure layer and the lower structure layer are arranged in a square staggered mode; the vegetation layer is obtained by mixing crushed corn stalks, wheat straw, grass seeds and a small amount of fertilizer; the nutrition layer is prepared from modified sludge by spraying a fungicide; the protection layer is located under the nutrition layer and prepared from crushed wheat straw. According to the vegetation carpet, the adopted materials are basically solid waste, the active sludge is selected as the nutrition layer, therefore, nutrients can be provided for vegetation, rainwater and domestic sewage can be purified, the soil fertility and the soil quality can be greatly improved, and the advantages of heat preservation, water retention, soil moisture conservation, structure stabilization and the like are achieved.

The invention provides a roof afforestation system which comprises roof planting modules, sectional buffering modules, a drain blind pipe, a drain eave gutter and a drainage device. Each roof planting module comprises planting soil and a vegetation unit, each sectional buffering module comprises a pebble groove, soil retaining units and filter layers, the roof planting modules are formed on a roof through the sectional buffering module, each sectional buffering module is arranged between two corresponding adjacent roof planting modules, the soil retaining units are arranged on two sides, in a slope direction of the roof, of each pebble groove, and each filter layer is arranged on one side, close to the corresponding roof planting module, of the corresponding soil retaining unit; the drain blind pipe is arranged below the planting soil between the sectional buffering modules and the drain eave gutter, the drain blind pipe penetrates the filter layers and the soil retaining units and is communicated with the pebble grooves, and water on the roof flows into the drain eave gutter through the pebble grooves and the drain blind pipe and is discharged through the drainage device. The roof is divided into the roof planting modules through the sectional buffering modules, sloping length of each roof planting module is reduced, and uniformity in soil distribution and soil humidity caused by gravity erosion of rainwater is lowered.

The invention discloses an intelligent closestool ceramic main body structure with a sunken water tank. The structure comprises a ceramic main body. The rear end surface of the ceramic main body is lower than or is flush with the upper end surface of the ceramic front end for mounting and supporting a seat. A water storage flushing water tank is arranged below the top surface of the rear end of the ceramic main body, and the water storage flushing water tank is of a built-in sunken flushing water tank structure at the rear end of the ceramic main body. The ceramic main body is more reasonablein layout and convenient to use, avoids use inconvenience and embarrassment caused by insufficient water pressure, and saves the total water usage per flushing. People can better utilize the limited height space above the water storage flushing water tank fully and conveniently, the grade of the overall layout of a bathroom can be improved, and the consumer demand is improved in the product market.

The invention provides a roof greening substrate. The roof greening substrate is characterized in that the substrate is mainly composed of biogas residues, vermiculite, plant fibers, acrylamide-acrylate copolymer crosslinking matter and earthworms. The roof greening substrate is loose, high in water content, sufficient in nutrient and suitable for roof plant growth, and the pH value is neural.

The invention relates to a foam concrete vegetation matrix and a preparation and use method thereof, and belongs to the technical field of building materials. The preparation and use method comprisesthe following steps: doping 0.2-0.5 wt% of SAP particles into plant seeds or seedlings to be planted, pre-absorbing 4-10 wt% of water, and uniformly distributing a thickness layer with the thickness of 0.5-1cm on the bottom layer of a mold; pre-absorbing 2.8%-4.0% of boric acid solution and 0.7%-1.0% of citric acid solution by the residual SAP particles, uniformly mixing with 27.0%-35.0% of P.O 42.5-grade cement, 25.0%-30.0% of coal gangue powder with more than 400 meshes, 3.0%-5.0% of rice hull ash with more than 200 meshes, 0.2%-0.4% of coconut oil, 0.5%-0.7% of 1cm-3cm alkali-resistant glass fiber, 0.1%, 0.1-0.2% of polycarboxylic acid water reducing agent, and the left water, adding 30% of hydrogen peroxide into an obtained slurry for continuous stirring to obtain a foamed slurry; andpouring the foamed slurry into a mold, hardening, molding, and overturning to obtain the foam concrete vegetation matrix. The foam concrete vegetation matrix is excellent in performance and suitable for various projects such as urban landscaping, household aerial gardens and potted plants.

The invention discloses a water channel structure with an adjustable gradient. The water channel is formed by splicing a plurality of splicing water channel bodies. Each splicing water channel body comprises a bottom plate and side plates arranged on the two sides of the bottom plate, wherein the bottom plate is connected with the side plates through rotating shafts, the side plates and the bottom plate can rotate through the rotating shafts, and sealing gaskets are arranged between the side plates and the bottom plate. The water channel has the characteristics of being simple in structure, convenient to mount, good in water storage performance and the like. Meanwhile, according to the water channel structure with the adjustable gradient, the gradient of the water channel can be adjusted according to site conditions; through the water channel, a method for casting a traditional water channel in place is replaced, and the production and mounting efficiency is greatly improved.

The invention discloses a method for preparing vermiculite-based silicon-potassium fertilizer by vermiculite modification. Vermiculite and alkali are subjected to a reaction under the condition of high-temperature roasting, silicon, calcium, magnesium and potassium in vermiculite and added potassium are converted into effective silicon, effective calcium, effective magnesium and effective potassium which are soluble in organic acids secreted by plants, absorption by crops is facilitated, and special properties of good ventilation, water storage and the like of the vermiculite which expands after being roasted are obtained after application to soil; the vermiculite raw material with heavy metal ion and harmful element content not exceeding the standard is obtained by sorting or beneficiation, different grades of novel vermiculite-based silicon-potassium fertilizer with high content of effective silicon, effective calcium, and effective magnesium and effective potassium can be obtained by changing the amount and proportion of alkali in the roasting process. The method has the characteristics of simple process flow, wide raw material source, low production cost, no environmental pollution and the like.

The invention provides a roof greening system, comprising: a roof planting module, including planting soil and vegetation units; a partition buffer module, including a pebble tank with pebbles, a soil retaining unit and a filter layer, which are separated on the roof through the partition buffer module There are multiple roof planting modules, and there are partition buffer modules between two adjacent pieces. The pebble trough has soil retaining units on both sides of the roof slope direction, and the side of the soil retaining unit close to the roof planting modules has a filter layer; drainage blind pipes, Drainage gutters and drainage devices, the drainage blind pipe is set under the planting soil between the partition buffer module and the drainage gutter, the drainage blind pipe runs through the filter layer and the soil retaining unit, and communicates with the pebble groove, and the water on the roof passes through the pebble groove and The drainage blind pipe flows into the drainage gutter and is discharged through the drainage device. The invention divides the roof into multiple roof planting modules through the partition buffer module, so that the slope finding length of each roof planting module is reduced, and the soil quality distribution and soil moisture unevenness caused by rainwater gravity erosion are reduced.

The invention discloses a planting method of camellia oleifera. The planting method comprises the following steps: a, planting land selection, namely selecting a planting region with the altitude of 300-500 m, gentle ground slope and fertile soil, preferably, a black land, and secondly, a loessland; and b, land treatment, namely firstly, reclaiming the land selected in step a by using a chain sawblade, completely clearing weeds, vines and the like in a camellia oleifera forest, then, carrying out rotary tillage on a deep position of soil by using a rotary tiller, smashing soil lumps, ridgingthe soil, and carrying out secondary reclamation in autumn. The planting method has the beneficial effects that the planting and cultivation processes of camellia oleifera are planned as a whole, so that the camellia oleifera has relatively high water storage and drainage values, the camellia oleifera not only can be guaranteed to have enough high water storage capacity in a drought season, but also can be guaranteed to have enough high water drainage capacity in a rainy season, and the phenomenon that roots of camellia oleifera trees are rotten due to rainwater accumulation can be avoided. The planting method disclosed by the invention can also be used for improving the insect prevention capacity of the camellia oleifera trees and improving the fruiting quality of the camellia oleifera, so that the economic benefit is increased.

The invention discloses a system and method for cleaning a municipal bridge guardrail by utilizing rainwater. The system comprises a foundation, a bridge guardrail, a guardrail, a rainwater collectingmodule, a filtering device, a rainwater well and water-permeable bricks, wherein the bridge guardrail is fixedly installed on the foundation, and the guardrail is fixedly installed under the bridge guardrail. The system can utilize stored rainwater to execute flushing operation from top to bottom and can carry pollutants on the surface of the guardrail to the ground, rainwater continuously flowsdown also pushes front rainwater to flow down and finally is discharged into a bridge water draining way, the delivered rainwater can form eddy by arranging a bowl-shaped water collecting box, furtherpressurizing is executed to improve the downward flowing speed of water, and accordingly the effect of removing particulate matter attached to the surface of the bridge guardrail is improved.

The invention relates to an azalea cultivation method, and belongs to the technical field of flower and plant cultivation. The azalea cultivation method includes the steps of 1) cutting bed treating;2) cutting branch pretreating; 3) cutting; 4) managing after cutting. The azalea cutting cultivation method is simple and easy to operate, the cutting-scion rooting speed is high, cutting seedlings have the high disease-and-pest-resistant capacity, and the survival rate of cutting is high. Annual-or-above and more-easily-cut branches with the length of 12 cm are used as cutting scions. In addition, the azalea cutting scions are soaked with treating fluid, breeding of root germs of the cutting scions is reduced, the PH value is adjusted to be 4.2 with lactic acid to be suitable for azalea growth, and the survival rate of cutting is increased. Nutrients in decomposed sawdust in cutting bed media are rich, and can provide enough nutrients for rooting and sprouting of the azalea cutting scions, the nutrients are used in cooperation with sandy soil, perlite and withered grass so that the cutting bed media of azaleas can have the good water storage and water conservation effects, and the airpermeability and the moisture-containing property of soil are improved.

The invention discloses a preparation method of acne removal mask liquid, and relates to the technical field of plant extract preparation and cosmetic preparation. The method solves the problem that the water storage performance of the existing mask is poor. The acne removal mask liquid provided by the invention comprises a mixture of cannabis sativa oil and anthocyanin, rhizoma bletillae powder,honeysuckle flower extraction liquid, pearl essence and honey; the prepared acne removal mask liquid has good acne removal effect and good water storage performance and cannot be easily dried in the use process.

The invention provides a storage method of lemons. The storage method comprises the following steps: (1) preserving picked healthy and ripe lemons at 5 to 15 DEG C for 4 to 6h; then putting the lemonsinto a fresh-keeping agent and immersing for 10 to 20min, wherein the fresh-keeping agent is prepared from the following components in parts by weight: 5 to 8 parts of tea leaf extract, 5 to 10 partsof lemon leaf extract, 1 to 3 parts of garlic, 1 to 2 parts of mustard, 3 to 5 parts of natto extract and 30 to 50 parts of water; (2) taking the lemons out from the fresh-keeping agent and drying inthe air; (3) putting each dried lemon into a polyethylene fresh-keeping bag; sealing an opening and fastening, and storing at room temperature. According to the storage method provided by the invention, natural elements with strong bacterium-inhibiting and sterilization effects are added into the fresh-keeping agent and traditional chemical sterilization substances are replaced, so that potentialhazards to human health are not caused; the natto extract has good water absorption and water storage effects and can be used for absorbing moisture in the fresh-keeping agent and preserving, so thatthe lemons are stored in a condition that the relative humidity is relatively great and the fresh-keeping period of the lemons is remarkably prolonged.

The invention discloses formwork cloth for buildings and a method for preparing the formwork cloth, and relates to the field of novel building materials.The formwork cloth for the buildings comprises base cloth and coating foam liquid.The method for preparing the formwork cloth for the buildings includes carrying out working procedures of weighing and cotton feeding, secondary opening, pneumatic hopper cotton feeding, carding air laying, needling reinforcing, slitting and winding on fibrous raw materials to obtain the base cloth; preparing the coating foam liquid; delivering the coating foam liquid to surface layers of the base cloth and coating the surface layers of the base cloth; conveying the coated base cloth into a drying oven and drying and solidifying the base cloth; carrying out foam pressing treatment on the base cloth and then winding the base cloth to obtain the formwork cloth for the buildings.The fibrous raw materials are PP (polypropylene) fine-denier fibers, PP coarse-denier fibers and PP / PE (polyethylene) double-component fibers with low melting points.The formwork cloth and the method have the advantages that skin layers of the PP / PE double-component fibers with the low melting points are molten and are adhered with PP fibers during drying and solidifying, the coating foam liquid is coated on the base cloth, accordingly, the stiffness of the base cloth can be improved, and the prepared formwork cloth for the buildings is excellent in stiffness and smoothness.

The invention discloses nutrient soil for watermelon planting. The nutrient soil is prepared from cinder, river sand, loess, corncob, bone meal, straw and ammonium nitrate. A preparation method of thenutrient soil comprises the following steps: the cinder and blocky loess are ground; the ground cinder and loess are mixed with the river sand, and the mixture is steamed in a steamer for 3 h for sterilization; the corncob and the straw are crushed by a crusher; the obtained raw materials are mixed with the bone meal, and the mixture is dried in the sun; the obtained raw materials are mixed withammonium nitrate, and the nutrient soil is prepared. Loose and breathable soil is provided for watermelon planting, the soil is moderate in pH and lower in salinity, has better water storage capacityand is rich in various nutrients needed by watermelon growth, and the nutrients are not prone to loss and are beneficial to watermelon growth.

The invention discloses a drainage structure for a prefabricated municipal road, and relates to the technical field of municipal road construction. The road drainage structure aims at solving the problems that an existing road drainage structure has earthquakes or foundation settlement inconsistency, every two adjacent structural main bodies can be loosened or dislocated, the structure water leakage occurs, the water flow cannot be timely discharged along the structure main body and reversely permeates to the road surface, the pavement structure and quality are influenced. The prefabricated structure comprises a groove and a prefabricated part body arranged in the groove. The prefabricated parts are sequentially connected in the length direction of the groove. A water flow channel is formed in each prefabricated part in the length direction of the prefabricated part, a water inlet hole is formed in the upper end face of each prefabricated part, a fastening device is connected between every two adjacent prefabricated parts, and each fastening device comprises connecting frames fixed to the two adjacent prefabricated parts respectively and a tension spring connected between the two connecting frames. The prefabricated structure has the beneficial effect of preventing the end parts of the adjacent prefabricated members from misplacing and breaking.

The invention discloses organic fiber soil suitable for planting Guizhou dragon fruit and a preparation method thereof. The organic fiber soil is made of black soil, straw, reed, pine needle, palm leaf, dragon fruit skin, ammonium nitrate and potassium phosphate. The organic fiber soil can provide various nutrients in the dragon fruit planting, is rich in trace elements such as nitrogen, phosphorus and potassium, and has strong soil fertility and good water storage capacity, and nutrients are not easy to lose, are beneficial to the absorption of the dragon fruit and promote the growth of dragon fruit. The organic fiber soil is loose in soil property, good in gas permeability, and good in heat insulation capacity, and can meet the demand of organic dragon fruit planting.

The invention discloses a multifunctional system for rainwater infiltration, collection and storage and purification of a sponge city.The system comprises a bioretention pond and water storage wells.Firstly, appropriate positions are selected for digging of a foundation pit of the bioretention pond and the water storage wells, and the portions, 5-10 cm away from the two sides of the bioretention pond, of the road surface are paved with opened vertical curb belts.The bioretention pond sequentially comprises a gravel covering layer, a vegetation planting soil layer, a biochar packing layer and a gravel drainage layer from top to bottom, and the periphery and bottom of the bioretention pond are both paved with anti-seepage thin film.An overflow pipe is laid on the gravel drainage layer, an upper end overflow opening is 5-10 cm higher than the gravel covering layer, and the lower end of the overflow pipe is connected with a municipal drainage pipe network.The system can be used at the places such as residential areas, schools, parking lots, parks and roads, not only can rainwater be stored, but also the content of pollutants such as nitrogen, phosphorus and heavy metal can be reduced, the purpose of recycling is achieved, city water logging is effectively relieved, and the rainwater use efficiency is improved.