35results about How to "Few kinds" patented technology

The invention discloses a method for producing white spirit. By adopting the method, the white spirit which is characterized by clearness and transparentness, full-bodied cellar vinasse, soft, sweet and mellow taste, harmonious flavors, and safety and health by green raw materials selection, steaming and impurity removal, mixed steaming and reaction in an aged pit mud, double aspergillus driving,high and low combination, high-temperature accumulation, polyxenie coexistence, same tank and different vinasse, thermophilic fermentation, laminated distillation, liquor storage according to quality, long air storage and aborative blending. The method has the advantages of simplicity and easily controlled condition and the produced white spirit is characterized by clearness and transparentness, full-bodied cellar aroma, secluded soya sauce, comfortable aroma, soft, sweet and full-bodied taste, harmonious favors, thick wine body, unique style and typical character.

The invention discloses a selective zinc oxide leaching and weak acidic zinc sulfide flotation smelting and selection combining process. For oxygen and sulfide mixed lead zinc ore, a zinc wet-method smelting process and a zinc flotation process are combined, zinc oxide in the ore is partially and selectively leached out by the first wet-method smelting process, and then zinc sulfide in the ore is floated out by the flotation process. In order to overcome the difficulty in treating the oxygen and sulfide mixed lead zinc ore, the invention provides the smelting and selection combining process which is short in process flow, reliable in technology, easy to operate and control, relatively low in material consumption and energy consumption for production, high in metal reclaiming efficiency, relatively good in economic benefit and high in practicability, the recovery of lead and zinc in the low-grade complex difficultly-selected oxygen and sulfide mixed lead zinc ore can be greatly improved, and the total recovery of lead and zinc can be up to over 90 percent.

The invention provides a solid phase extraction method for extracting total astaxanthin from haematococcus pluvialis, comprising the following steps of: (1) solid extraction: uniformly mixing haematococcus pluvialis with silica gel at the weight ratio of 1:1-5:1, adding 1-5mL of methanol, 10-20mL of petroleum ether and 1-5mL of methylene chloride into 10g of haematococcus pluvialis, stirring and extracting for 0.1-1h, and putting the extracted mixture into a chromatography column; (2) elution: carrying out elution by the use of methanol and collecting a red eluant part; and (3) condensation: carrying out underpressure distillation on the red eluant part to obtain a dark red astaxanthin oily liquid. The solid extraction method provided by the invention has advantages of simple operation step, short time, high recovery rate, low consumption of the organic solvent, little environmental pollution and low production cost, and is easy for industrial scale-up.

The invention relates to an index method for diagnosing the degree of the water shortage of a crop. The method comprises the following steps of: placing a reference crop which cannot generate transpiration at a place with the same environment as the detected crop, wherein delta T in the index formula for diagnosing the degree of the water shortage is temperature difference between a canopy of an actual reference crop and the canopy of the detected crop; delta TP is the temperature difference between a potential or maximum canopy of the reference crop and the canopy of the detected crop; meanwhile measuring the temperature of the canopies of the reference crop and the detected crop and substituting the temperature difference into the formula to calculate the CWSI; and quantizing and determining the degree of water shortage of the detected crop. The method has the advantages of few detection parameters, no complex calculation or multi-factor detection accumulative error, reliable data, capability of detecting in a non-contact way and economy and practicability.

The invention discloses high-purity mangiferin prepared from leaves and twigs of aquilaria sinensis and a preparation method thereof. The method comprises the following steps: on the basis of utilizing leaves and/or twigs of aquilaria sinensis as raw materials, extracting with an alcohol solution; after recovering alcohol at reduced pressure, carrying out water precipitation, alcohol precipitation, devitrification and the like so as to obtain a mangiferin crude product; and then recrystallizing to prepare the high-purity mangiferin. The method has the advantages that the leaves and twigs of aquilaria sinensis are used as the raw materials; the content of the mangiferin is high, and the variety and quantity of impurities are both low; the obtained high-purity mangiferin dose not contain allergic components, and the final product is high in quality and can be widely applied to the industries such as medicine, health care products and cosmetics; and the method has the advantages of simple, stable, practicable preparation process step, short production period, less labor consumption and low cost.

The invention relates to a medicinal composition of cefoperazone sodium and tazobactam sodium. The medicinal composition comprises the following components in part by weight: 4 to 8 parts of cefoperazone sodium and 1 part of tazobactam sodium, wherein the tazobactam sodium is measured by a powder X-ray diffraction measuring method, and characteristic diffraction peaks are shown at the positions of 6.9 degrees, 10.5 degrees, 11.4 degrees, 16.6 degrees, 19.2 degrees, 22.7 degrees, 27.0 degrees, 29.7 degrees and 33.5 degrees in an X-ray powder diffraction map expressed by a diffraction angle of between 2 theta+/-0.2 degree. The medicinal composition has the advantages of high stability, low relevant substance content, controllable quality and the like, and the administration safety of patients is improved. The invention also relates to a method for preparing the tazobactam sodium with the technical characteristics of the characteristic diffraction peaks.

The invention discloses a bioactive carbon fiber preparation method. The preparation method comprises the following steps: obtaining a benzoxazine solution; obtaining a mixed solution of blending polymers; obtaining a composite nanofiber; and preparing the bioactive carbon fiber. The preparation method is simple, the kinds and the application amounts of reaction reagents required by the method are less, and the cost is low. The bioactive carbon fiber prepared through the method has the advantages of extremely-high specific surface area, good fiber diameter and aperture uniformity, excellent mechanical performances and excellent heat stability.

The invention discloses a preparation method of a high temperature resistant forsterite type refractory material. The method comprises the following steps: using nickel-iron slag as raw materials and magnesia powder as additives, wherein the ratio of [w (MgO) + w (FeO)] to [w (Al2O3)+w (Cr2O3)] is 10.50 to 13.57, the ratio of w (MgO) to w (Cr2O3) is 34.90 to 48.12 and the ratio of w (MgO) to w (SiO2) is 1.19 to 1.61, adding binding agents and controlling calcination temperature to be 1360 DEG C to 1450 DEG C, inducing mineral phase reconstruction of the nickel-iron slag, optimizing transformation process of refractory crystal form (Mg2SiO4, MgO.Fe2O3, MgO.Al2O3, MgO.Cr2O3) to increase refractoriness of the refractory material. The refractoriness of the obtained refractory material is 1700 to 1800 DEG C, and the refractory material also has the advantages of high compressive strength, large bulk density, low apparent porosity, and can fully meet the industrial need of the refractory material. The preparation method of the high temperature resistant forsterite type refractory material has the advantages of high utilization rate of resources, high production efficiency, high added value, environment friendliness, easiness in process control, low production cost and the like.

The invention relates to the technical fields of preparation and application of a novel massive carbon material with an ordered mesoporous structure, and particularly discloses a preparation method and application of an ordered mesoporous carbon-activated carbon fibrofelt composite material. The ordered mesoporous carbon-activated carbon fibrofelt (OMC-ACF) composite material disclosed by the invention is a novel massive carbon material with an ordered mesoporous structure, and is prepared by taking phenolic resin as a carbon source and F127 as a structure directing agent, coating the phenolic resin and the F127 on the surface of an ACF at the same time according to a certain proportion, and performing intermolecular self-assembly, thermal polymerization and calcination under the protection of an inert gas; and the composite material is large in specific area, high in pore volume and large in bore diameter, so that the composite material can be used as a novel electrode material. The novel massive carbon material prepared by the method has the advantages of high catalytic degradation activity, high stability and the like in a test of cathode diffusion oxygen degradation dye wastewater through electro-Fenton reaction; and the novel massive carbon material is simple in production process and low in cost, and can be easily industrialized.

The invention discloses a method for auxiliary determination of the substitution degree of water-soluble food-grade sodium carboxymethylcellulose by microwaves. The method comprises the following steps: weighing a certain amount of sample; saturating high-purity water by ozone gas; dissolving the sample to prepare a solution with the assist of the microwaves; testing the concentration of sodium ions by utilizing a modern determination and test instrument; calculating the substitution degree. According to the method, the substitution degree of the water-soluble food-grade sodium carboxymethylcellulose can be determined. With the assist of the microwaves, the method has the characteristics of time conservation, high simplicity and convenience in operation, wide determination range, and small data error.

The invention provides a microelectronic phase-sensitive receiver. The microelectronic phase-sensitive receiver is simple in structure, can accurately and reliably trigger a relay to work and achieves the abnormity alarm function and the like. According to the microelectronic phase-sensitive receiver, two measurement circuits with an MCU1 and an MCU2 as cores are the same in structure, local voltage and track voltage are connected to A/D input pins of the MCUs through miniature mutual inductors, the MCUs collect two paths of voltage waveforms of a period, the initial phase angles and the effective values of the two paths of signals are calculated through a Fourier transform algorithm, a phase difference is solved, logic judgment is carried out, square signals are output when the condition is met, amplification, isolation transmission and rectification filter are carried out on the square signals, and the square signals wait for selection and output. An MCU3 collects and calculates four paths of voltage, a result is compared with a processing result of the MCU1 and a processing result of the MCU2 respectively, whether the voltage is normal or not is judged, one path of voltage is selected according to a set strategy, an output voltage amphenol connector outputs direct current voltage to enable a 1700 relay to work, and an alarm signal is given out if necessary.

The invention relates to the technical field of silkworm breeding, and discloses an ultra-low-cost artificial feed for silkworms and a preparation method and use method thereof. The preparation methodcomprises the following steps: kneading fresh and tender crushed mulberry twig pulp, freshly-squeezed lemon juice, soybean meal, flour, cane sugar, agar powder and inorganic salt into a dough-shapedmixture, extruding the mixture into strip-shaped artificial feed by an extruder, and laying the feed on a silkworm rearing bed for silkworm rearing. The fresh and tender crushed mulberry twig pulp isused for replacing mulberry leaf powder, the freshly-squeezed lemon juice is used for replacing a preservative, the soybean meal and other raw materials are added to prepare the artificial feed on site, heating and drying are not needed during preparation, the raw material and processing costs of the artificial feed are greatly reduced, and vitamins, food calling components and other nutrient substances in mulberry twigs and leaves cannot be damaged by high temperature; the tender mulberry twigs provide cellulose for the artificial feed, so that the feeding habit, main nutrients and physiological growth requirements of silkworms are met; and an atomization humidifier is used for humidifying silkworm breeding rooms, the problem that silkworms cannot eat due to the fact that artificial feedbecomes hard after moisture is evaporated is avoided, the input amount is reduced, and the cost is further reduced.

The invention belongs to the field of non-ferrous metallurgy, and in particular to a simple and rapid method for accurate determination of silver in lead anode mud. The invention provides a simple and rapid method for accurate determination of silver in lead anode mud in a nitric acid solution medium containing tartaric acid. The method invention can be realized by the following steps: (1) preparation of the required equipment and reagent solution; and (2) the sample analysis. The method provided by the invention has the advantages of high accuracy, high precision and good reproducibility. Because of comprehensive elimination of the influences of several accidental factors, conditions for fully precipitation of silver chloride, fully purification of products and particle filtering are simultaneously well controlled; therefore, the determination quality results of the method are similar to that of fire assay. The method uses less kinds and dosages of reagents, has simple operation, fastness and low cost, avoids the lead steam harm to the environment caused in the fire assay, and has the work efficiency 1 time higher than that of the fire assay, and is particularly suitable for the usage by production units.

The invention provides lipoic acid tablets with few types and small dose of accessories and a preparation method thereof. The preparation method comprises the steps of weighing filler and an adhesive, and preparing accessory tablets by a conventional tabletting process; putting the prepared accessory tablets into an efficient coating pan; weighing lipoic acid and sieving; spraying the sieved lipoic acid powder to coat the accessory tablets layer by layer by a spray gun by taking a sodium carboxymethylcellulose solution as a spray; drying and airing in a thermostatic chamber to obtain the lipoic acid tablets. The content of main drug is high, and the compliance is improved; by adopting few types and small dose of accessories, the adverse effect of the accessories is reduced, and the cost of raw materials is also reduced; the temperature of the operation process is strictly controlled, and the sticking phenomenon generated in lipoic acid tabletting is avoided by pressing the accessory tablets not containing lipoic acid; by adopting the spraying-coating process, color spots are avoided; moreover, the content uniformity, friability, chroma uniformity and stability of the lipoic acid tablets are all remarkably improved.

The invention relates to foam glass prepared from fused brown corundum dust-removing powder serving as a raw material and a preparation method thereof. The technical scheme comprises the following steps of: mixing 20 to 50 weight percent of fused brown corundum dust-removing powder and 50 to 80 weight percent of waste flat glass powder, adding 2 to 8 weight percent of foaming agent based on the weight of the mixed powder, and mixing uniformly; filling the mixture into a mould, heating to the temperature of between 850 and 1,100 DEG C in a sintering furnace, and preserving heat for 10 to 30 minutes; and naturally cooling, demoulding and cutting to obtain the foam glass. The fused brown corundum dust-removing powder mainly comprises the following chemical components: 20 to 56 weight percent of Al2O3, 10 to 50 weight percent of SiO2, 0.3 to 20 weight percent of K2O, 2 to 15 weight percent of igloss and 0 to 10 weight percent of Fe2O3+MgO+Na2O+TiO2. The preparation method has the characteristics of a few additives, short process period and easy operation. The volume weight of the product is 250 to 1,200kg/m<3>, the compressive strength is 4 to 20MPa and the heat conductivity is 0.070 to 1.200W/(m*K); and the foam glass is widely applicable and can meet the application requirements in different environments.

The invention discloses a magnesium alloy. The magnesium alloy comprises, by weight percentage, 0-0.1% of Zn, 2%-4% of Sm, 0.1%-0.8% of Zr, 0-0.2% of impurities and the balance Mg. The invention further discloses a preparing method for the magnesium alloy. The thermal conductivity of the magnesium alloy at 25 DEG C is larger than 110 W (m.k)<1>, and the magnesium alloy has the excellent heat-conducting property; in addition, only a small amount of Sm, Zr and Zn are added in the magnesium alloy, the types and the using amounts of the added metal elements are fewer, and the cost is greatly reduced; moreover, at 25 DEG C, the strength of extension of the magnesium alloy ranges from 175 MPa to 230 MPa, the yield strength ranges from 102 MPa to 130 MPa, the ductility ranges from 6% to 11%, and the mechanical property is good; and the rate of finished products of castings ranges from 85% to 95%, and the pressure casting performance is good.

The invention belongs to the technical field of rail traffic operation control, and particularly relates to a tube rail train operation control system and a control method of the tube rail train operation control system. The tube rail train operation control system comprises a dispatch and command center, a safety control center and vehicle-mounted control units, wherein the dispatch and command center is responsible for whole line operation command, the safety control center is in communication with trains, turnouts and loading and unloading devices of the whole line and is responsible for the operation control of whole line equipment; instructions from the dispatch and command center are received, and the trains, the turnouts and the loading and unloading devices of the whole line are controlled and protected; each train is provided with the vehicle-mounted control unit, the vehicle-mounted control units among the trains are connected through wireless communication, and at least oneof the vehicle-mounted control units is connected with a safety control center through wireless communication; and the vehicle-mounted control units can realize in-transit coupling and in-transit disassembly of the trains through controlled mechanical interfaces between vehicles. The control method can optimize and adjust the transportation mode according to the actual operation route, and realizein-transit coupling and in-transit disassembly between the trains. The passage capacity of section lines and the utilization efficiency of line pipelines are greatly improved.

The invention provides a magnesium alloy as well as a preparation method thereof and a cavity filter. The magnesium alloy comprises the following components in percentage by weight: 1.5-3.5% of samarium, 0.2%-1.0% of zirconium, 0.01%-0.1% of silver and the balance magnesium. According to the magnesium alloy provided by the invention, a little samarium, zirconium and sliver is added into magnesium, so that casting performances of the magnesium alloy are improved; mechanical strength, heat conduction and the like of magnesium alloy are strengthened; the preparation method for the magnesium alloy is simple; a cavity and a cover body of the cavity filter are made of the magnesium alloy, so that the cavity filter has the advantages of light weight, good mechanical property and good heat radiation, and therefore, production cost of the filter is greatly reduced; and the magnesium alloy is easy to assemble and manufacture.

The invention relates to a new bilobalide B compound. The bilobalide B compound is extracted from ginkgo leaf; and the bilobalide B content in the bilobalide B compound is greater than 99%. The bilobalide B compound contains bilobalide A of which the content is lower than 0.4%. The invention also relates to a preparation method of the bilobalide B compound, which comprises the following steps: under stirring conditions, adding kieselguhr and ginkgo leaf extract, heating under reflux at 78-85 DEG C for 0.5-1.5 hours, filtering and concentrating; adding distilled water, removing impurities, separating out the ethyl acetate layer, passing the ethyl acetate layer through an peracidic aluminum oxide column, eluting with water saturated ethyl acetate, and collecting the eluate; concentrating the eluate under reduced pressure until no ethyl acetate smell is emitted, adding a proper amount of ethanol to dissolve the concentrated eluate, adding water until the ethanol content is 60-70%, standing, precipitating coarse crystal, filtering, taking the coarse crystal, and drying; and recrystallizing the coarse crystal sequentially with ethanol and ethyl acetate to obtain the finished product bilobalide B compound.

The invention discloses a method for testing the substituting degree of carboxymethylcellulose potassium. The method comprises the following steps: weighing a certain amount of a carboxymethylcellulose potassium sample at first, firing, preparing a solution with a certain concentration, and testing by using a modern testing instrument. By adopting the method disclosed by the invention, the substituting degree of carboxymethylcellulose potassium can be obtained, and the method has the characteristics of simplicity and convenience in operation, wide testing range and small data error.

The invention discloses a preparation method of tobacco perfume used for adding reconstituted tobacco and belongs to the technical field of tobacco perfume preparation. The method is characterized in that an extracting agent formed by mixing ethanol, propylene glycol and distilled water with the volume ratio being 50-60:10-15:25-30 is used for extracting high-quality tobacco raw materials two times, after extracting solutions obtained two times are merged, a set diopter range is achieved through vacuum rotating evaporation and concentration, and the tobacco perfume used for adding reconstituted tobacco is prepared. Compared with the prior art, the method has the advantages that the method is simple, the extracting efficiency is high, and selectivity is good; the aroma substances in the obtained tobacco perfume are rich in category, the categories of undesirable components are few, the content of the undesirable components is little, and the fragrance quality, the fragrance amount, the varied odor and the remaining taste of the reconstituted tobacco can be effectively improved.

The invention provides a collecting agent for magnesium siliceous phosphorite mixed reverse flotation, a preparation method and a beneficiation method. The beneficiation method comprises the followingsteps: (1) grinding the magnesium-silicon phosphate ore until the particle size of -0.074 mm accounts for 85%, and adding water to prepare ore pulp; (2) adding 15kg/t of sulfuric acid into the ore pulp, adding 300g/t of a special collecting agent, carrying out roughing operation, and scraping bubbles; wherein the special collecting agent is prepared from the following components in parts by weight: 10 to 20 parts of oxidized paraffin soap, 5 to 15 parts of ether amine and 20 to 30 parts of kerosene, (3) carrying out one-time mixed reverse flotation scavenging operation and two-time mixed reverse flotation concentration operation on a tank bottom product obtained by roughing to obtain a concentration tank bottom product, namely a phosphate concentrate product; and (4) performing mixed reverse flotation scavenging operation on a foam product obtained by roughing, and scraping foam to obtain a scavenged foam product, namely tailings. According to the method, the indexes of the obtained phosphate concentrate product are improved, the types and dosage of reagents are small, and the beneficiation cost is reduced.

The present invention provides a high sulfur crude oil oil-gas recovery technology and oil-gas recovery system. The oil-gas recovery technology includes the following steps: a. high sulfur crude oil oil-gas is compressed, the compressed oil-gas is cooled, then gas and liquid separation is performed, and the separated liquid is collected; b, the separated oil-gas of the step a is condensed, then gas and liquid separation is performed, and the separated liquid is collected; c, the separated oil-gas of the step b is introduced into an activated carbon adsorption device, and is desulfurized, and desorption and collection of hydrocarbons in the activated carbon adsorption device are performed. According to the high sulfur crude oil oil-gas recovery technology, most of sulfides and hydrocarbons are condensed into liquid in the condensation processing process, species and quantity of sulfides entering into a desulfurization tower are less, and the composition is simple, so that breakthrough sulfur capacity of the desulfurization tower is high, the desulfurization effect is better, and when the sulfur content in the desulfurized oil-gas is very easy to meet.

The invention discloses an automatic high-yield purification method for preparing spherical graphite. The method comprises the following steps: dividing a fineness range value of a catalyst for preparing brominated polystyrene; weighing and taking materials; crushing; uniformly mixing; and completing the preparation of the catalyst. The method has the beneficial effects that the amount of the catalyst can be regulated and controlled according to the fineness ratio according to the preparation requirement, so the effect of preparing six different finenesses is achieved; the mode of crushing one by one and adding mixed powder is adopted, and various single materials can be fully mixed together in the same crushing equipment, so the consistency of the crushing fineness is ensured; and the crushing degree can be adjusted by reducing or increasing the number of the hammer heads of the crusher, so that the effect of adjusting the crushing fineness is achieved.

The invention discloses a sludge biological adsorption material for fluorine removal and a preparation method thereof. The method comprises the following steps:pyrolyzing a dry sludge powder for 40-60 min at 600-650 DEG C to obtain sludge biochar; mixing the sludge biochar with potassium acetate according to the mass ratio of 1:(0.5-2), then pyrolyzing at 600-650 DEG C for 40-60 minutes, and performing centrifuging, washing, drying and crushing to obtain sludge-based biochar; dissolving aluminum chloride and cerium chloride in deionized water to prepare a mixed solution, and fully mixing the mixed solution with the biochar prepared in the step 2; and dropwise adding a sodium hydroxide solution into the mixed solution, adjusting the pH value of the solution to 7-7.5, fully stirring for 10-12 hours, and performing centrifuging, washing, drying and crushing to obtain the sludge biological adsorption material for removing fluorine. When the adsorbent is used for adsorbing fluorides, the removal efficiency can reach 80% or above, and the adsorption capacity is 80-110 mg/g.

The invention discloses a table capable of being converted into a stool. The table includes a table plate, four supporting legs and two connecting plates, the two connecting plates are hinged to the front and rear ends of the table plate through two hinges respectively, the hinges are distributed at the lower sides of the table plate and the connecting plate, the left and right ends of the connecting plate are perpendicularly connected with two corresponding supporting legs respectively, and the inner side spacing between the two supporting legs connected with the connecting plate at the frontside is equal to the outer side spacing between the two supporting legs connected with the connecting plate at the rear side. The table capable of being converted into the stool has the advantages that the structure is simple, the variety and quantity of the components are both less, and the production cost is low.

A self-checking circuit of preventing a misoperation of wiring comprises an alternating current power supply, an alternating current / direct current (AC/DC) convertor, a sensor, a relay and a programmable control unit. The self-checking circuit of preventing the misoperation of the wiring is characterized by further comprising a detecting switch K1 which is connected between the sensor and an electrical level input end of the programmable control unit. The working method of the self-checking circuit of preventing the misoperation of the wiring comprises power supplying, triggering, the opening of a normally-closed switch and judging. The self-checking circuit of preventing the misoperation of the wiring has the advantages of guaranteeing the correctness of signal transmission, improving the reliability of the using of the self-checking circuit of preventing the misoperation of the wiring and the safety of equipment, and being simple, stable and reliable in structure; the kinds and the number of electronic elements are small, and the self-checking circuit of preventing the misoperation of the wiring is convenient to achieve; and the self-checking circuit of preventing the misoperation of the wiring is strong in generality, can be used on sensors of any kind, and can run stably and reliably.

The invention discloses a hydraulic oil cylinder buffering system which comprises a two-position four-way electromagnetic reversing valve and a one-way valve group, wherein one end of the two-positionfour-way electromagnetic reversing valve is connected with two pipelines, the other end of the two-position four-way electromagnetic reversing valve is connected with the one-way valve group and a pipeline, the one-way valve group comprises a first one-way valve and a second one-way valve which are connected in parallel, and a throttle valve which is connected with the second one-way valve in series, the flow direction of the first one-way valve points to a hydraulic oil cylinder, and the flow direction of the second one-way valve is back on to the hydraulic oil cylinder. The hydraulic oil cylinder buffering system disclosed by the invention improves the stability and the operation comfort of the whole machine, reduces the physical impact of a piston on the oil cylinder, prolongs the service life of the oil cylinder, and has the advantages of simple structure, few types and quantity of hydraulic elements, low cost and stronger practicability.

The invention discloses a prefabricated assembled wharf structure capable of being rapidly formed. The prefabricated assembled wharf structure comprises a prefabricated frame and a prefabricated panel, the prefabricated frame comprises hollow stand columns, the hollow stand columns are connected through connecting beams, and cast-in-place holes penetrating from top to bottom are formed in the hollow stand columns; cast-in-place core columns are formed in the cast-in-place holes; a plurality of prefabricated main panels are spliced on the prefabricated frame to form the prefabricated panel, gaps are reserved between the adjacent prefabricated main panels, and concrete is cast in place in the gaps to form a node frame; and a cast-in-place surface layer is formed on the surface of the prefabricated panel through cast-in-place concrete. The prefabricated assembled wharf structure of an open-type structure can be rapidly formed, sea filling is not needed, the overwater construction workload and construction difficulty can be reduced, and the construction period can be shortened; the self-stability is kept due to the large weight, the wave stress is reduced through the air, and the structure adapts to the conditions of deep water and large waves; and the prefabrication degree is high, construction and installation are easy and convenient, speed is high, and construction cost is low.