3398results about How to "Promote sustainable development" patented technology

The invention relates to a process of preparing inorganic cementing material. It comprises following steps: mixing industrial slag, silicon-containing material, lime, plaster, addictive and water according to a certain proportion; pressing mixed material or compressing it into briquetting, maintaining naturally for thorough reaction, heat treating for activation under 450-850 Deg. C, adding addictive and grinding until sifting leaves is less than 15% with screen of 80 um, and getting inorganic cementing material, which is used as special cement or expansive agent. The invention is characterized by good physical property, stable volume, long durability and workability, low energy consumption and cost and environmental friendly.

The invention refers to a kind of positive ion double surface activating agent in third petroleum production chemical oil-displacing agent, who is expressed by m-s-m, m represents the carbon atom quantity of activating agent alkyl radical, s represents the carbon atom of chain connection radical. S=2, 3, 4, 5, 6, m=10, 12, 14, 16, 18, the activating agent can be used singly, it also can be used with other surface activating agent. It needn't add in alkali, thus it is harmless to formation, it saves oil exploit cost, and it is stable, it has excellent property for decreasing the tension of oil / water interface, and overcomes that current oil-displacing agent induces the oil displacing efficiency falling because of the color spectrum detachment phenomenon.

The invention relates to a method for recycling a nickel-cobalt-manganese ternary anode material, belongs to the technical field of recovery of waste cells, and solves the technical problem that a method for recycling the nickel-cobalt-manganese ternary anode material is provided. The method for recycling the nickel-cobalt-manganese ternary anode material comprises a step of removing a binder from the positiveplate of the nickel-cobalt-manganese ternary material by thermal treatment, and the method for removing the binder in the positive plate of the nickel-cobalt-manganese ternary material is thermal treatment of the positive plate of the nickel-cobalt-manganese ternary anode material at 400-1000 DEG C for 0.5-5 hours.

The invention discloses a method for intelligent classification of garbage images. The method is implemented as follows: a high-definition collecting device including a camera collects a garbage image; the collected garbage image is preprocessed; convolution and pooling processing are carried out on the pre-processed garbage image, feature image extraction is carried out, and then a feature imageis identified; and according to an identification result, whether the garbage type is a recyclable garbage type is determined. Compared with the prior art, the intelligent classification method has the following beneficial effects: identification and classification are carried out on the collected garbage images by using the camera, an image identification processor, and a controller to determinewhether the garbage is recyclable, so that manual garbage classification is not needed, the environmental awareness of people is strengthened, the waste pollution is reduced, and thus sustainable development is promoted. The intelligent classification method having advantages of high practicability and wide application range is easy to promote.

The invention discloses active powder concrete which is prepared by Portland cement, steel slag powder, fly ash, silicon ash, effective water reducing agent, river sand, mixing water and steel fiber with the mass ratios of 0.52 to 0.58 : 0.16 to 0.18 : 0.10 to 0.16 : 0.13 to 0.16 : 0.012 to 0.018 : 0.9 to 1.1 : 0.14 to 0.18 : 0.156 to 0.234. The preparation method thereof is as follows: each component is sequentially added into a stirring machine for being uniformly stirred and shaped; then after the components are maintained, the temperature is raised to 80 to 90 DEG C at the temperature rising speed of 15 to 20 DEG C / h and then constant temperature maintaining is carried out for 72 to 96h; then, the components are cooled to room temperature at the cooling speed of not more than 20 DEG C / h to obtain the active powder concrete product. The invention employs the industrial wastes like steel slag powder and fly ash to replace quartz powder, partial cement and silicon ash, and employs thin river sand to replace quartz sand to prepare the active powder concrete of 200 grade under the maintaining conditions of normal pressure below 100 DEG C, thus not only being capable of remarkably reducing the material cost and the shaping maintaining cost, but also playing important roles on saving resources and energies, protecting the environment and promoting sustainable development as a large amount of industrial waste slag is used.

The invention relates to a mineral polymeric material based active powder concrete and a preparation method thereof. The mineral polymeric material based active powder concrete is made of a gelled material, aggregate, an exciting agent, water, a water reducer and steel fiber in a mass ratio of 1: 0.8-1.3: 0.01-0.2: 0.1-0.3: 0.005-0.07: 0.01-0.25. The preparation method comprises the steps of: pouring the weighed gelled material, aggregate and steel fiber in an agitator and agitating evenly, adding the water in which the exciting agent and the water reducer are dissolved, mixing evenly and molding through vibration or compression, and carrying out autoclave curing or steamed curing on a molded test piece to obtain the mineral polymeric material based active powder concrete. By adopting thepreparation thought of introducing the mineral polymeric material, abundant solid wastes are mixed in the active powder concrete successfully; and the prepared active powder concrete not only has high strength and good durability, but also achieves the effects of reducing the cost and protecting the environment.

The invention discloses composite hydrogel for adsorption of metal ions and a preparation method thereof. The hydrogel comprises, by weight, 5-95 parts of polyvinyl alcohol, 5-95 parts of chitosan, 0.1-20 parts of modified graphene oxide and 2-6 parts of sodium alginate, the weight ratio between the polyvinyl alcohol and the chitosan is (5: 95)-(95: 5), modified graphite oxide includes modified graphene oxide modified by dopamine and / or modified graphene oxide modified by ferroferric oxide, all components are uniformly mixed in a certain sequence, and the composite hydrogel is obtained under special conditions. The composite hydrogel for adsorption of the heavy metal ions and the preparation method thereof have the advantages that high speed, high efficiency, high adsorption capacity and high selectivity are achieved, the adsorption effect on the heavy metal ions is remarkable, meanwhile, the preparation process is simple, and the operability is high.

The process of preparing PDT copolyester fiber includes the following steps: 1. saccharifying and catalytically hydrogenating corn starch to prepare sorbitol, catalytically hydrogenating to prepare multicomponent mixed alcohol, and fractionating in a fractionating tower at 182-212 deg.c to obtain corn-base ethylene glycol product of 89-99 % content and with ethylene glycol as main component and other diols; 2. detecting the contents of component diols in the ethylene glycol product and adding insufficient components for content fluctuation controlled within 10-30 %; and 3. adding nanometer titania in 0.05-1 wt% into the corn-base ethylene glycol product, and copolymerizing together with terephthalic acid at 280-288 deg.c for 5-7 hr to prepare PDT copolyester. The process is suitable for industrial production.

The invention provides a foaming synthetic leather manufacturing technology based on waterborne polyurethane (WPU). In the manufacturing technology, the WPU is taken as a main raw material, and a hollow microsphere foaming agent is taken as a foaming material; and the technology can be widely used for manufacturing synthetic leathers such as clothing leathers, luggage leathers, shoe upper leathers, sofa leathers, home interior trim leathers and the like. The content of volatile organic compounds (VOC) in the finished leather is lower than 2mg / kg (leather), and the air permeability and moisture penetrability are good, thus meeting the EU (European Union) requirements for the ecological synthetic leather; and in addition, the foaming synthetic leather has the advantages of moderate foaming multiplying power, uniform and compact foaming holes, bulky and firm hand feel as well as good comprehensive performance which is equivalent to or superior to that of a solvent-borne product. The foaming synthetic leather manufacturing technology based on the WPU provided by the invention has the beneficial effects that by adopting the WPU instead of the traditional solvent-borne PU, organic pollution is eliminated from a source, organic solvent resources are saved, the comprehensive energy consumption is lowered, the employment environment of laborers is improved, and the ecological grade of the synthetic leather and the international market competitiveness of the product are enhanced, thus achieving obvious innovativeness and remarkable social and economic benefits.

An environmental protection type bast fibre film which is air permeable and impervious is prepared from bast fibres through opening fibres, removing dust and impurities, carding, stripping for netting, airflow netting, chemical sticking by adhesive to become film, applying the hydrophobic agent onto its surfaces, and cold rolling.

The invention discloses a method for evaluating the foundation stability of a coal mining subsidence area. The method comprises the following steps of (1) calculating the height of a caving fracture zone: according to different geological and mining conditions, measuring related parameters and selecting a calculation formula or an empirical formula for the height of the caving fracture zone; (2) calculating the load impact depth of the coal mining subsidence area: according to the geological stratum conditions of a goaf, analyzing the gravity stress and additional ground stress of a foundation and determining a calculation method for the building load impact depth of the coal mining subsidence area; and (3) evaluating the foundation stability of the coal mining subsidence area: according to a mutual relation among the mining depth H<mining> of a coal seam, the height H<fracture> of the caving fracture zone in the coal mining subsidence area and the building load impact depth H<impact>, evaluating the foundation stability of the coal mining subsidence area. The method is suitable for foundation stability evaluation of different mining methods and mining processes under different geological and mining conditions, and is wider in application range and good in evaluation effect.

The invention provides a modeling method for an electromechanical transient model of a doubly-fed wind power generator set. From a practical physical device, through a reasonable hypothesis, the electromechanical transient model of the doubly-fed wind power generator set is simplified, and meanwhile, the dynamic process and low-voltage passing characteristics of direct current voltage of a frequency changer are considered. Simulation results show that a simulation curve of the model is consistent to the low-voltage passing actually measured curve of the doubly-fed wind power generator set, the results are accurate and reliable, and the modeling method is used for analyzing the influence of wind power field connection of the large-scale doubly-fed wind power generator set on the transient stability of an electric power system.

The invention discloses an imitative wild sexual reproduction and breeding technique of gastrodia tuber. Main steps comprises that breeding is carried out to get mature gastrodia tuber seeds and good sprouting strain, mature class III shoestring fungus is adopted as production seed, which is planted under a natural hillside forest that is with over 80 percent of shade density and in which wild gastrodia tuber grows and is distributed; artificial mixed germination strain is adopted; room temperature is controlled so as to produce germination strain with seed; sexual reproduction, breeding and planting time is selected between June and August; the breeding technique is also suitable for field breeding. The invention has the advantages that: 1. bad factors resistance property of sexual reproduction and breeding of gastrodia tuber is improved. 2. Gastrodia tuber seeds are germinated to lead the growth cycle of protocorms to be a time slice that is basically matched with an animated period of the shoestring fungus; inoculation rate and survival rate of the protocorms are increased. 3. Raw materials are obtained locally, thus reducing cost; sustainable development of non-pollution gastrodia tuber planting industry is promoted in ecological agriculture forests. 4. The small site breeding method enhances competitor infection resistance of the gastrodia tuber seed.

The invention relates to hydrogel for sewage treatment as well as a preparation method thereof. The hydrogel comprises 5-90 parts of polyving akohol, 5-90 parts of chitosan, 0-20 parts of sodium carboxymethylcellulose, 0.05-0.3 part of graphene oxide and 3-5 parts of sodium alginate. The hydrogel provided by the invention can adsorb heavy metal ions in water efficiently, and has the characteristics of high adsorption capacity, high selectivity, cyclic regeneration and recycling, biodegradation and the like.

The invention provides a comprehensive utilization method of corn cob, which effectively separates hemicellulose, lignin and cellulose contained in a reproducible biological resource of corn cob in a reasonable process order at low cost and high efficiency, and makes full use of every type of biomass components, thereby solving the problem of utilization of residue in the biomass refining process of preparing ethanol and butanol by extracting xyio-oligosacchandes and enzymolysis from the corn cob in the prior art, and making reasonable and effective use of main components of biomass contained in the corn cob; particularly, the lignin can substitute partial petrochemical materials to prepare modified high-molecular materials, thereby reducing the cost of high-molecular materials and saving the energy consumption of petrochemical materials to bring great social benefit; in addition, the comprehensive utilization method of corn cob is featured by simple processing technique, easy implementation and favorable effect.

The invention discloses a method for manufacturing foamed synthetic leather based on water-based resin and TPU (Thermoplastic Polyurethane) resin. The manufacturing method comprises the following steps: using water-based polyurethane as a facial layer and a surface treatment layer, using TPU resin as a foaming layer, using a water-based cement as a bonding layer, and obtaining the environment-friendly foamed synthetic leather through a coating transfer process. The method has the advantages that organic pollutants are thoroughly eliminated from the source, organic solvent resources are saved, potential safety hazard is eliminated, and the work environment of workers is improved. The VOC (volatile organic compound) content of a finished leather product is lower than 5 mg / kg. The foamed synthetic leather is ecological environmental friendly and meets European ecological foamed synthetic leather requirements, and the other properties of the leather can also reach or superior to the properties of solvent products.

The invention discloses a coal mine gas comprehensive application system and an application method thereof. The system comprises a coal mine ventilation air measuring component, a coal mine gas measuring component, a high-concentration gas treatment subsystem, a low-concentration gas treatment subsystem, a coal mine ventilation air treatment subsystem and an afterheat treatment subsystem, wherein a high-concentration gas pre-treatment device and a high-concentration gas generator set are connected via a pipeline to form the high-concentration gas treatment subsystem, a safe conveying device, a low-concentration gas pre-treatment device and a low-concentration gas generator set are connected via pipelines to form the low-concentration gas treatment subsystem, the high-concentration gas generator set and the low-concentration gas generator set are respectively connected with a power grid via cables, a ventilation air delivering connecting device, a mixing device and a ventilation air oxidization device are connected via pipelines to form the coal mine ventilation air treatment subsystem, and the afterheat treatment subsystem is respectively connected with the high-concentration gas treatment subsystem, the low-concentration gas treatment subsystem and the coal mine ventilation air treatment subsystem. The coal mine gas comprehensive application system and the application method can be used for comprehensively applying gas with different concentrations, utilization rate of the gas is the highest, emission of greenhouse gas is reduced, and comprehensive recycling of energy is realized.

The invention discloses a method for cultivating hybrid rice, which comprises the steps of breeding improved varieties, raising sturdy rice seedlings, field cultivation and prevention and treatment for main diseases and pests. According to the method, the conservation of soil, fertilizer and water, the resistance for cold, drought, lodging and disease and pest and other functions of the soil are improved; and the applying quantity of chemical fertilizer is reduced on the premise of ensuring the national food security, therefore, the cost is saved and the farmer's income is increased, and energy is saved, environment is protected and the agricultural sustainable development is promoted for the country.

A method for manually-cultivating three-stage Rhizoma Paridis belonging to the technical field of agriculture includes primary seedling planting and raising, secondary seedling planting and raising, Rhizoma Paridis cultivation and field management, wherein, the primary seedling planting and raising includes the steps of presprouting of seeds and seed seedling raising, when tubers weigh 2g after 3 years, transplantation can be carried out. The secondary seedling planting and raising includes the steps that: the primary seedlings with 2g of tubers are transplanted in October and last third of November and transplantation can be carried out when the tubers are 15g after 3 years. The steps of Rhizoma Paridis cultivation and field management are that: the secondary seedlings are transplanted according to the proportion of 21,000 seedlings in per acre in October and last third of November, and mature Rhizoma Paridis can be dug after 3 years; farmyard manure is fertilized once or twice every May and last third of August with the amount of 3000kg per acre every time, or carbamide is fertilized or foliar fertilizer is sprayed for three times in the vigorous growth period; in the non-seed-collecting filed, ovaries are picked off after sepals unfold; commercial pesticide is used for preventing plant diseases and insect pests in the growth period of the Rhizoma Paridis. The method for manually-cultivating Rhizoma Paridis is characterized by less investment, early effect, good harvest, high efficient, etc., which can realize major production.

The invention relates to a prefabricated reinforced concrete component with grooves and a manufacturing method thereof and belongs to the technical field of components in a prefabricated reinforced concrete structure. The component uses a cored slab prefabricated by reinforced concrete; and transverse grooves are arranged at the vertical edge of the reinforced concrete prefabricated slab at intervals, and are interacted with vertical holes parallel to the surface in the prefabricated slab. The manufacturing method provided by the invention comprises the following steps of: combining templates, such as a bottom die, a top die, a side die, a steel pipe inner die and the like on a production field of prefabricated slabs; arranging reinforcing meshes; then pouring concrete; drawing a steel pipe before hardening the concrete; and dismounting the templates after the concrete reaches to the expected strength. According to the prefabricated reinforced concrete component and the manufacturing method thereof provided by the invention, the industrial level of a building structure is improved, the load-carrying capability is improved, and resources can be saved. The prefabricated reinforced concrete component can be applied to various wall body bearing structures.

The invention relates to an assembly integral shear wall building structure and a building method and belongs to the field of buildings and construction technologies of the buildings. The shear wall building structure is formed by connecting prefabricated concrete hollow components through steel bars and cast-in-place concrete, wherein the prefabricated concrete hollow components include prefabricated wall body components, floor board components, T-shaped wall pillar components, L-shaped wall pillar components, cross-shaped wall pillar components and wall body components with holes. Multiple parallel lengthwise through holes are formed in the prefabricated hollow components in the length direction and multiple parallel transverse non-through holes communicated with the lengthwise through holes are formed in the prefabricated hollow components in the width direction. Horizontal anchor connection steel bars inserted into the transverse holes are arranged among the different prefabricated components. Lengthwise anchor connection steel bars are arranged in the lengthwise holes, wherein one end of each lengthwise anchor connection steel bar protrudes out of the surface of the corresponding prefabricated component by a certain length. The concrete is filled into the lengthwise holes and the transverse holes to form a layer of structural unit or a single-layer building structure. Multiple structure units are connected to form a multiple-layer or high-rise assembly integrated shear wall structure. The assembly integral shear wall building structure and the building method can be applied to the multiple-layer or high-rise shear wall building structures and frame-shear wall building structures. Thus, the industrial level of the building structures can be improved, stress performance can be improved and resources are saved.

The invention relates to an electromechanical transient modeling method and an electromechanical transient model of a wind turbine generator system, in particular to an electromechanical transient modeling method and an electromechanical transient model of a direct-drive-type wind turbine generator system. The modeling method includes the following steps: firstly, a generator-side model of the wind turbine generator system is constructed. Secondly, a direct current and unloading circuit model of the wind turbine generator system is constructed. Thirdly, a grid-side converter and control system model of the wind turbine generator system is constructed. And lastly, a low voltage ride through control model of the wind turbine generator system is constructed. Based on a practical physical device, by means of a reasonable presume, an electromagnetic transient model of the direct-drive-type wind turbine generator system is simplified, and meanwhile, the dynamic process of direct current voltage and low voltage ride through characteristics of the converter are taken into account. The simulation result shows that the simulation curve of the model is consistent with practically detected low voltage ride through curve of the direct-drive-type wind turbine generator system, and the result is accurate and reliable. The electromechanical transient modeling method and the electromechanical transient model of the direct-drive-type wind turbine generator system are used for analyzing influence on transient stability of a power system when a large-size direct-drive-type wind power plant is introduced.

The invention discloses a formula of a fruit and vegetable seedling culturing substrate prepared by utilizing agricultural wastes. Processed cassava dregs, fungus dregs, vinegar dregs, gardening vermiculite and gardening perlite are mixed according to a proportion of 4.5 : 3.5 : 1 : 0.5 : 0.5, and 37.5 kilos of decomposed livestock excrements are added per stere and are mixed thoroughly and evenly. Aimed at the problem that at present, soilless culturing and industrialized seedling culturing extract and utilize too many turf resources, the fruit and vegetable seedling culturing substrate prepared by utilizing the agricultural wastes utilizes the fermentative cassava dregs, the cotton seed hull dregs, the vinegar dregs and other agricultural organic wastes to replace the turf, and the prepared composite seedling culturing substrate is used for culturing seedlings of fruits and vegetables, is capable of improving the quality of the seedlings, reduces the consumption of the turf resources, reduces the pollution of the agricultural wastes, protects the ecological environment, lowers the seedling culturing cost, and realizes cost saving and synergism of vegetable industrialized seedling culturing and sustainable development.

The amphoteric carboxylic acid comb grafted copolymer as concrete super-plasticizing agent is prepared through the following steps: 1) free radical copolymerizing reaction of four kinds of monomers in certain proportion in water soluble medium; 2) crosslinking reaction through introducing crosslinking agent after the polymerization. The present invention proposes that the amphoteric ionic polymer can raise the saturated added amount of concrete super-plasticizing agent, and introduces amphoteric ion concept into the molecular design of concrete admixture. The concrete super-plasticizing agent of the present invention has high water reducing rate, can eliminate the environmental pollution caused by concrete water reducing agent and reduce the added amount while ensuring the outstanding dispersivity and slump maintaining capacity.

The invention discloses a method for increasing the elevation of an intertidal zone to form a suitable land for mangrove forest. The method mainly includes key steps of determining a target elevation; determining land reclamation boundaries; constructing cofferdams; constructing fences; implementing earth filling; flattening filled earth; constructing artificial tidal creeks; realizing temporary fixing measures; and the like. The inventor aims to increase the elevation of the intertidal zone by the aid of engineering means, requirements of mangrove plants on hydrology, sediment and other conditions can be rapidly met, the suitable land for the mangrove forest is formed and created, accordingly, afforestation success rate is increased, coastal ecological safety and sustainable development of China are promoted, and land safety and ecological safety of coastal zones are effectively maintained.

A chemical oil-displacing agent without damage to stratum is proportionally prepared from the silane-type coupling agent modified nanoparticles of SiO2, Al2O3, TiO2, or their mixture and the petroleum sulfonate of Na, R, Ca, or ammonium.

The invention discloses a method for preparing gypsum-based self-leveling material for use in building material industry. The main material of the gypsum-based self-leveling material is desulfurized gypsum which is a desulfurization product from power plants. The method comprises: firstly, calcining the desulfurized gypsum in a calcining kiln; and secondly, mixing calcined gypsum powder accountingfor 50 to 78 percent of the total weight of the material, a water reducer accounting for 0.1 to 1 percent of the total weight of the material, a retarder accounting for 0.01 to 0.5 percent of the total weight of the material, a water-retaining agent accounting for 0.02 to 5 percent of the total weight of the material, a reinforcing agent accounting for 0 to 10 percent of the total weight of the material, re-dispersible emulsion powder accounting for 0.2 to 1.5 percent of the total weight of the material, a defoamer accounting for 0.05 to 0.2 percent of the total weight of the material, riversand accounting for 25 to 45 percent of total weight of the material and a filler accounting for 0 to 20 percent of the total weight of the material to obtain a the high-performance gypsum-based product. The invention provides a new method for producing high-quality gypsum-based self-leveling material characterized by high strength, high flowability, small contraction deformation and low cost by using the desulfurized gypsum, which provides a new way of comprehensively using desulfurized gypsum that is a solid waste and fills the blank that the preparation of gypsum-based self-leveling materials from desulfurized gypsum lacks in China.

The invention provides a resource utilization method for saponification waste water producing epoxypropane by a chlorohydrination process from the perspectives of cleaner production and circular economy, which aims at the traditional processing problem of the saponification waste water producing the epoxypropane by the chlorohydrination process. Calcium chloride in the saponification waste water is converted into precipitated calcium carbonate and meanwhile dilute brine containing organic matter is obtained. The precipitated calcium carbonate can be prepared into nano and micron products and can be applied to dope, plastic processing, rubber, printing ink, paper making and the like; after the impurity of the organic matter in the dilute brine is removed, electrolysis brine is prepared through membrane method concentration according to the requirements of chlor-alkali electrolysis and balanced enterprise water utilization; and fresh water after membrane separation can be recycled as process water. The resource utilization method for the saponification waste water of producing the epoxypropane by the chlorohydrination process has the advantage that the saponification waste water is applied as a resource; and while the waste water is processed, a precipitated calcium carbonate powder material, salt and the water are obtained so that the resource utilization method has better economic benefit, environmental benefit and social benefit.

The invention provides a ship multi-type energy source management system and an energy source management method. The ship multi-type energy source management system comprises a monitoring and energy source management master module, a diesel power generation system, a wind power generation system, a photovoltaic power generation system, a wave energy power generation system, a storage battery energy storage system, a shore power system, a direct current bus bar and a plurality of paths of power transmission systems. The ship multi-type energy source management system and the energy source management method have the advantages that the ship multi-type energy source management system provided by the invention fills the technological blank of integrating various types of green energy source power generation into ship heat energy power generation systems; the energy conservation and emission reduction are met; the global warming is responded; the greenhouse gas emission is controlled; the atmospheric environment is protected and the sustainable development of low-carbon economy is promoted.

The invention relates to self-compacting concrete which is used for overcoming the contradiction between flowability and stability, early strength and delayed coagulation, contraction and expansion and the like of the self-compacting concrete in the prior art. In the invention, by means of combination of an aliphatic (hydroxyl) sulfonate superplasticizer and a polycarboxylic acid superplasticizer, selection and collocation of a cementing material and coarse and fine aggregates as well as specific mix design, the self-compacting concrete (more than C40) with low consumption of the cementing material is prepared from coal ash, mineral powder and tailings, wherein, a ketoaldehyde condensate is taken as the main component of the aliphatic (hydroxyl) sulfonate superplasticizer; and when the superplasticizer is added to cement paste, the mixed concrete has the advantages of good construction workability, less possibility of bleeding and segregation, no crystallization precipitate at low temperature and the like. Compared with the prior art, the self-compacting concrete prepared by the method provided by the invention has the advantages of lowering cement consumption by at least 70kg / m<3>, reducing consumption of the cementing material by at least 70kg / m<3>, comprehensively utilizing at least 470kg / m<3> of solid waste, and lowering concrete cost by at least **yuan / m<3>.