259 results about "High water content" patented technology

The invention discloses a pneumatic sampling device and method for high-water-content muddy soft soil, and relates to the technical field of dredged sludge sampling devices.The pneumatic sampling device comprises a sampling cavity, a sampling opening is formed in the side wall of the sampling cavity, a flexible sampling container is arranged in the sampling cavity, and the opening end of the flexible sampling container faces the sampling opening; the valve plate is slidably connected to the outer side of the sampling opening; the gas transmission rod is fixed on the sampling cavity and is communicated with the interior of the sampling cavity; the gas path control mechanism is communicated with the interior of the sampling cavity through a gas transmission rod; the pneumatic driving part is arranged on the sampling cavity and is pneumatically connected with the gas path control mechanism, and the driving end of the pneumatic driving part is in transmission connection with the valve plate; wherein the pneumatic driving part can be driven by the gas path control mechanism to drive the valve plate to move to open or close the sampling port, and the gas pressure in the sampling cavity can be changed by the gas path control mechanism, so that the flexible sampling container expands to suck a soil sample, or the flexible sampling container contracts to discharge the soil sample.

The invention relates to the technical field of sludge treatment, in particular to a drying device for co-processing sludge in a household garbage incineration plant. Comprising a machine body, a hopper is mounted at the upper end of the machine cover; a discharging opening is formed in the side wall of the machine body; the interior of the machine body is rotationally connected with a mounting column; according to the invention, the screw rod is arranged; the screw rod can drive the three mounting columns which are in spiral transmission connection with the screw rod to ascend, and as the screw pitch differences of the adjacent columns are equal, the relative displacement increment in unit time is constant, so that the distances among the three mounting columns are uniformly increased along with the ascending process, and the crushing effect of sludge with relatively high water content is improved; and when the water content of the sludge is low, the screw rod is controlled to drive the mounting columns to be close to each other, the distance between the drying discs is reduced, the sludge with the low water content is prevented from being excessively pulverized, and the drying efficiency and the drying effect of the sludge with different humidity are effectively improved.

The invention belongs to the technical field of solid waste resource utilization and inorganic material synthesis, and relates to a method for reducing the water content and particle size of active calcium silicate. According to the method, powdery quicklime or ground carbide slag is used as a calcium source, the reaction activity of the calcium source is improved through steam activation, then the calcium source is added into desiliconization liquid containing sodium silicate in batches, a reaction is carried out under the temperature control and stirring conditions, and finally, hot water ultrasonic washing and drying are carried out, so that an active calcium silicate product with low water content and fine particle size is prepared. According to the process, the problems of high water content, large particle size, impurity residues and the like in the traditional process are effectively solved by accurately controlling the Ca / Si molar ratio, temperature sectional reaction and ultrasonic-assisted washing. According to the method, the post-treatment burden of the product is remarkably reduced, the whiteness and the purity are improved, high-value utilization of high-calcium solid wastes such as the carbide slag is also realized, and the method has good industrial popularization prospects and environmental benefits.

The utility model belongs to the technical field of constructional engineering, and particularly relates to a sand screening device with an adjusting structure, which comprises a sand screening machine body. The top of the sand screening machine body is fixedly connected with a storage hopper; a support is fixedly connected to the top of the sand screening machine body. The inner wall of the bracket is rotationally connected with a screw rod; the end part of the screw rod is in threaded connection with an adjusting plate, and the adjusting plate is arranged at the top of the sand screening machine body in a sliding manner; the other end of the screw rod is fixedly connected with a rotating handle; a motor is mounted on the side wall of the adjusting plate; a rotatable stirring block is arranged in the middle of the storage hopper in a matched mode, the problem that it is difficult for workers to dredge the storage hopper at the top of the sand screening machine body in the follow-up process due to the fact that the follow-up storage hopper is blocked by materials with the high water content can be solved, and under the action of a slidable adjusting plate, the flexibility of the whole stirring block during work can be improved; the problem that partial blind areas on the inner wall of the storage hopper are difficult to dredge by the adjusting plate is solved.

The invention discloses a stable high-water-content sludge roadbed filling construction device and method. According to the device, a movable frame serves as a carrier, a foam manufacturing and conveying device, a high-water-content sludge storage and conveying device and a cement mixing and conveying device are integrated, and foam, cement paste and sludge are supplied to a mixing tank of a vehicle-mounted stirring device through respective independent pipelines; the stirring device adopts a low-speed multi-blade impeller to carry out low-shear mixing so as to protect a foam structure, the mixture is uniformly sprayed on a roadbed by the spraying device, and then the mixture is leveled by the height-adjustable transverse slicking device. The method comprises the steps of device in-place, foam preparation, sludge and cement paste conveying, low-speed mixing, spraying, scraping and the like. Compared with the prior art, on-site integrated and continuous construction is achieved, the foam structure can be effectively protected, the material proportion and the construction rhythm can be accurately controlled, the construction efficiency, the engineering quality and the high-water-content sludge resource utilization rate are improved, and the energy-saving, environment-friendly and engineering popularization value is remarkable.

The invention discloses a follow-up water drive potential tapping method based on flow field comprehensive analysis, and belongs to the technical field of potential tapping of remaining oil in a high-water-content stage in the middle and later periods of oilfield development. The method comprises the following steps: quantitatively identifying a dominant seepage channel based on streamline distribution, an oil saturation field and a water passing multiple of a target oil reservoir; dividing six remaining oil types and determining distribution characteristics of the remaining oil types; pressure system research and reasonable injection-production ratio regulation and control are combined, and differential potential tapping countermeasures for different remaining oil types are provided. According to the method, the development problems of high water content and low recovery degree in the subsequent water flooding stage of polymer flooding are effectively solved, and the oil reservoir recovery efficiency and development benefits can be remarkably improved.

The invention relates to the technical field of solid waste treatment equipment, and discloses a multi-element solid waste feeding device suitable for different water content gradients, which comprises a hopper, external high-water-content solid waste enters the hopper from the upper part of the side wall of the hopper, and external low-water-content solid waste enters the hopper from the lower part of the side wall of the hopper; the air inlet assembly comprises a high-temperature hot air inlet piece and a low-temperature hot air inlet piece, and the high-temperature hot air inlet piece and the low-temperature hot air inlet piece are used for conveying hot air to the high-water-content solid waste and the low-water-content solid waste correspondingly; the flow guide part is arranged in the hopper, and the high-water-content solid waste slides downwards along the flow guide part and is mixed with the low-water-content solid waste in the sliding process; and the stirring piece is arranged at the bottom of the hopper and is used for stirring the mixture. Precise layered drying of the garbage with different water contents is achieved, the garbage with the high water content obtains sufficient drying time and is matched with a high-temperature heat source, excessive drying of the garbage with the low water content is avoided, and the secondary drying procedure is omitted.

The present application relates to the field of analytical chemistry, and provide a kind of method for detecting complex matrix of agricultural products in guanidine morpholino salt hydrochloride.The extraction solvent of the present application uses acetonitrile+acid+aqueous solution, different acid is selected according to the water content of sample, trifluoroacetic acid is used for high water content sample, and formic acid is used for low water content sample;In purification, pH value is adjusted according to the oil content of sample, ammonia is used to adjust pH to 8.5 for high oil content sample, and pH value can not be adjusted for low oil content sample.In the method, NaCl is not added to make organic phase and aqueous phase in extraction liquid stratified, through the way of extracting three times repeatedly, the recovery rate of the method is guaranteed;And using ultra-high phase liquid chromatography triple quadrupole mass spectrometry technology, guanidine morpholino salt hydrochloride in complex matrix of agricultural products is successfully detected, the extraction method is fast and simple, the quantitative limit of guanidine morpholino salt hydrochloride in tea is 0.1mg / kg, and the quantitative limit in other matrix is 0.05mg / kg, which is suitable for routine analysis, and can meet the quantitative detection requirements of guanidine morpholino salt hydrochloride in complex matrix of agricultural products.

The invention relates to a preparation method and application of low-cost water and fertilizer slow-release functional hydrogel, and belongs to the technical field of new environment-friendly materials.The preparation method comprises the steps that polyacrylonitrile-containing acrylic old clothes and animal bones are smashed, then subjected to compression molding, pre-oxidized in an air atmosphere and finally subjected to a hydrothermal reaction, and the low-cost hydrogel is obtained. The prepared low-cost hydrogel is high in water content, durable in water retention, rich in nitrogen, phosphorus, potassium and other elements necessary for plant growth, long in water and fertilizer slow release time and used for desert control and greening. According to the method, waste such as old clothes and waste bones which are difficult to degrade in the natural environment is prepared into the hydrogel material suitable for plant growth, and the hydrogel material is used for desert greening and desertification control, has economic significance and environmental significance and is relatively feasible.

The invention belongs to the technical field of fluorinated ethylene propylene, and particularly relates to a fluorinated ethylene propylene color master batch drying method which comprises the following steps: standing a fluorinated ethylene propylene raw material at low temperature for 20-30 minutes, and then freezing and grinding to obtain fluorinated ethylene propylene refined particles; the fluorinated ethylene propylene refined particles are put into a reaction kettle to be frozen and dried, then soaked into a polyvinylpyrrolidone solution to be subjected to ultrasonic dispersion for 20-40 min, filtered and dried, and coated particles are obtained; the coated particles are put into a reaction kettle to be subjected to constant-temperature negative-pressure standing for 2-3 h, and prefabricated particles are obtained after nitrogen purging; the prefabricated particles are put into ethyl alcohol to be subjected to ultrasonic treatment for 20-30 min, after filtration, ethyl alcohol washing is conducted for 2-3 times, drying is conducted, and the dried fluorinated ethylene propylene color master batch is obtained. The problems that fluorinated ethylene propylene is high in water content and low in drying efficiency are solved, exposed water is removed in the mode that low-temperature freezing grinding is matched with freezing drying, the internal and external pressure difference is formed in the constant-temperature negative-pressure mode, and therefore the effect of releasing water vapor is achieved.

The application provides a high-mixing amount of construction waste runway structure suitable for a high-water-content silt ground, and can be applied to runways of different grades. The high-mixing amount of construction waste runway structure is located on the high-water-content silt ground and sequentially comprises, from bottom to top, a modified subgrade, a granular cushion, a water-stable lower base layer, a water-stable upper base layer, a composite seal layer and a cement concrete surface layer. Except for the composite seal layer, the materials of the structure layers all contain full replacement or high-mixing amount of construction waste recycled materials; the material types can include brick-concrete type construction waste and cement concrete type construction waste; and according to different structure layer positions, different particle size gradations and particle sizes are used. The airport runway surface structure provided by the application uses construction waste materials to replace natural stone materials such as mountain stone and limestone gravel, and meets the technical requirements of each layer of the runway surface through modification and other treatment methods, which has positive significance for saving natural materials, efficiently recycling solid waste and reducing the construction cost of the runway.

The invention relates to a low-energy-consumption flue gas carbon capture absorbent based on a composite amine solvent and application thereof. The absorbent comprises main amine, auxiliary amine, an accelerant, sulfolane, an antioxidant, a passivator, a stabilizer and water. The mass percent of water in the absorbent is 50%-70%. According to the invention, the absorbent with high water content is covered, the content of main amine in the absorbent is obviously reduced, and the corrosion to equipment is reduced. The antioxidant, the passivator and the stabilizer are added, so that the regeneration energy consumption can be reduced, the viscosity of the absorbent is reduced, and the application scene is expanded.

The invention belongs to the technical field of metering, and particularly relates to a three-phase online metering device and a metering method. A three-phase on-line metering device comprises a base, two identical metering tanks and a control unit are arranged above the base, liquid inlet valves are connected between the top side faces of the two metering tanks respectively, liquid outlet valves are connected between the bottom side faces of the two metering tanks respectively, the liquid outlet valves are connected with liquid outlet pipelines, water content analyzers are arranged on the liquid outlet pipelines, and gas phase pipelines are arranged at the tops of the metering tanks. A gas phase flowmeter is arranged on the gas phase pipeline, a first pressure transmitter is further arranged on the upper portion of the metering tank, a second pressure transmitter is further arranged on the lower portion of the metering tank, the control unit comprises a PLC and a display screen, and the PLC is electrically connected with the liquid outlet valve, the liquid inlet valve, the first pressure transmitter, the second pressure transmitter, the water content analyzer and the gas phase flowmeter. According to the invention, through alternate continuous measurement of double-tank metering, accurate metering of oil, gas and water in a single-well oil transportation line with small liquid amount, high water content and unstable gas amount is realized.

The invention discloses a forestry wetland soil remediation sampling device convenient to sample, and relates to the technical field of soil sampling, the forestry wetland soil remediation sampling device comprises a support assembly and a sampling assembly arranged in the support assembly; the sampling assembly comprises a first splicing pipe and a second splicing pipe, and the first splicing pipe and the second splicing pipe can be spliced to form a sampling pipe. The invention relates to a sampling device convenient for sampling and used for forestry wetland soil remediation. In the sampling process, a driving block moves downwards to drive a driving rod to slide in an inserting groove, gear teeth of the driving rod drive an adjusting gear to rotate, and a rotating plate rotates from a horizontal state to a vertical state parallel to the axis of a sampling pipe, so that soil can enter the sampling pipe along the two sides of the rotating plate and fill spaces with different depths; after sampling is completed, the driving block moves upwards to push the driving rod to move reversely, the adjusting gear drives the rotating plate to rotate to the horizontal state, the interior of the sampling pipe is divided into a plurality of independent cavities, flowing and mixing of the high-water-content soil samples are effectively prevented, and the completeness of all layers of samples is ensured.

The utility model provides a backing-layer-free high-water-content transparent medical hydrogel pasting film, which relates to the technical field of medical hydrogel pasting films and comprises an adhesion layer, a hydrogel layer is arranged on the top wall of the adhesion layer, a surface layer B is arranged on the top wall of the hydrogel layer, a surface layer A is arranged on the top wall of the surface layer B, and the surface layer A is arranged on the top wall of the surface layer B. Uniformly distributed adsorption air holes are formed in the outer wall of the adhesion layer, the anti-fracture assembly comprises a plurality of groups of I-shaped frame brackets arranged on the inner walls of the surface layer A and the surface layer B, the I-shaped frame brackets are uniformly distributed, and I-shaped frame heads are symmetrically and fixedly connected to the outer walls of the I-shaped frame brackets. According to the utility model, the proportions of polyester and polyurethane used by the surface layer A and the surface layer B have a certain difference, so that the surface layer A has better toughness, elasticity and extensibility compared with the surface layer B, bending deformation is better carried out, and the phenomenon that the film is broken from the outer side to lose the use function is prevented.

The present disclosure provides a sintered aluminum foil and a preparation method thereof, the preparation method comprising: performing a post-first aging on an initial sintered aluminum foil; performing a first heat treatment on the initial sintered aluminum foil; performing a microwave heating treatment on the initial sintered aluminum foil; and performing a post-second aging on the initial sintered aluminum foil. By performing the microwave heating treatment, the present disclosure can realize directional heating on the part of the sintered aluminum foil oxide film with high dielectric loss (i.e. the oxide film with high water content), thereby improving the heating efficiency, improving the depolarization effect, making the hydrated aluminum oxide film fully heat and dehydrate and performing crystal type conversion, obtaining an aluminum oxide film with higher dielectric constant, and avoiding the problem of defects in the traditional sintered aluminum foil due to the complex structure and the difficulty of the oxide film to fully crystallize and convert.

The present application aims to provide a lean water composite alkanolamine absorbent for low-concentration CO2 capture, belonging to the technical field of green carbon capture, which is a composite system of mixed alkanolamine-organic physical solvent-water. By regulating the types and proportions of the components, the water content of the system and the solvent regeneration energy consumption are significantly reduced while ensuring high CO2 absorption capacity. The water content of the absorbent is not higher than 20%, and it exhibits good absorption performance under low partial pressure CO2 conditions. The desorption regeneration energy consumption is about 77% lower than that of the same proportion alkanolamine high water content MEA system (MEA:EG:H2O=0.2:0:9.8). In the absorption-desorption cycle process, the absorbent exhibits good cycle stability, and its CO2 absorption performance does not significantly attenuate after multiple cycles. The lean water composite alkanolamine absorbent is suitable for low-concentration CO2 separation application scenarios such as direct air capture.

The objective of this invention is to provide a baking oil composition that can produce bread that is soft, moist, melts easily in the mouth, and has a chewy texture that lasts. In particular, the objective is to provide a baking oil composition that allows for good workability even with dough containing a large amount of water, and produces bread that has good volume after heating and good shape retention. [Solution] The inventors have found that the above problem can be solved by using an oil and fat composition containing a specific amount of psyllium seed gum with a moisture content of 12% by mass or less and a moisture content of 5% by mass or less. In particular, they have found that in bread dough with a high water content, adding the oil and fat at the timing of adding the flour after it has absorbed enough water makes it possible to form a gluten film and suppress the stickiness of the dough.

The application relates to a micro-fracturing sand-prevention filling well completion process. The micro-fracturing sand-prevention filling well completion process comprises the following steps: filling a high-permeability layer with high water content by using a first particle-carrying liquid containing selective proppants; and filling a low-permeability layer with high remaining oil saturation by using a second particle-carrying liquid. The application solves the problem of uneven liquid production profile caused by the prominent interlayer contradiction of loose sandstone reservoirs, can effectively improve the liquid production profile, solve the interlayer contradiction, release the productivity of the production well and improve the effect of water control and oil increase.

The utility model relates to the technical field of drying devices, and discloses a drying device for artificial leather processing and manufacturing, which comprises a drying box, support frames are mounted on two sides of the drying box, a first motor is mounted on the upper surface of the support frame on the left side, a first screw rod is mounted at the rotor output end of the first motor, and a second screw rod is mounted at the rotor output end of the first screw rod. An adjusting block is rotationally connected to the surface of the first lead screw, and a drying frame is mounted on the surface of the adjusting block; the second motors are arranged on the upper portion and the lower portion of the inner wall of the drying box. An additionally-arranged second motor can drive a mounting frame to move along the surface of the drying frame, so that a second fan can be driven to move in the left-right direction of the leather, and a third motor is started to drive the second fan to move in the front-back direction of the leather, so that the second fan can be driven to move to the wet part of the leather; and the areas, with high water content, of the leather are dried in a concentrated mode, and the artificial leather can be evenly dried.

The invention belongs to the technical field of isotope recovery and separation, and discloses a method for recovering high-abundance C13 carbon dioxide from C13 urea based on acidic constant-temperature hydrolysis. According to the method, the hydrolysis rate of the C13 urea is maintained by selecting proper dilute sulfuric acid concentration, sulfate radicals and urea are prevented from forming an adduct by controlling the dilute sulfuric acid concentration, the release efficiency of the 13CO2 is increased, the reaction rate is controlled, and side reaction is avoided. The invention further provides a set of reaction device for recycling 13CO2 through acidic constant-temperature hydrolysis of C13 urea under reduced pressure, the gas-liquid phase contact area and residence time are remarkably increased by arranging the rectifying column, visual water removal and low temperature are realized through the water removal column and the condenser pipe, the problems of external CO2 pollution, high impurity air content and relatively high water content are solved, and the method is suitable for industrial production. And high abundance recovery of the 13CO2 is ensured.

The invention discloses high-water-retention and anti-cracking all-solid waste sludge-based foam light-weight fluid-state soil and a preparation method thereof, and belongs to the technical field of solid waste resource utilization and civil engineering filling materials, the high-water-retention and anti-cracking all-solid waste sludge-based foam light-weight fluid-state soil comprises aggregate, an alkali-activated gelling system, a water-retention and anti-cracking agent and light-weight filler, the aggregate comprises high-water-content sludge, and the alkali-activated gelling system comprises water-retaining and anti-cracking the alkali-activated gelling system comprises fly ash, red mud, steel slag and an alkali activator, the water-retaining anti-cracking agent comprises xanthan gum, the light filler comprises foam, layered pouring is performed during construction, a foam-stabilizing anti-collapse layer is arranged between two layers of fluid-state soil, and a water-retaining anti-cracking layer is sprayed on each layer. According to the invention, the problems of large cement consumption, high carbon emission and easy dry shrinkage and cracking in the traditional foam light fluid soil are effectively solved, and the water-retaining property and the crack resistance of the material are obviously improved; meanwhile, a cement-like gel structure is formed through solid waste synergistic excitation, efficient resource utilization of the waste sludge is achieved, and the engineering cost and the environmental burden are reduced.

This invention discloses a method for regenerating waste fishing net wire and the resulting recycled PA composition. The method includes the following steps: S1: Waste wet fishing net wire is fed into a forced feeder and forcibly transferred to a drainage mechanism with drainage holes for dewatering; S2: After dewatering, the waste fishing net wire is melted in the melting section of a first screw extruder, and the melt undergoes a first filtration to discharge molten fishing net wire; S3: The molten fishing net wire is transferred to a second screw extruder, where chain extender, water absorbent, and antioxidant are side-fed and mixed. The melt undergoes a second filtration and post-treatment to obtain a recycled PA6 composition; the moisture content of the waste wet fishing net wire is above 10 wt%. The method of this application can directly process waste fishing net wire with high water content, greatly reducing costs. Combined with the secondary melt filtration treatment method, it can better reduce the influence of impurities in the fishing net wire. With the cooperation of chain extender, water absorbent, and antioxidant, the performance of PA6 can be better restored, resulting in a recycled PA6 composition with more stable molecular weight and viscosity, better appearance, and lower odor.

This invention discloses a process for refining crude methanol with high water content. The crude methanol with high water content enters a pre-distillation tower, and the bottom products are then fed into a pressurized tower and a medium-pressure tower, respectively. The bottom product of the pressurized tower enters an atmospheric tower, and the bottom product of the medium-pressure tower enters a negative-pressure tower. The top products of the atmospheric tower and the bottom products of the negative-pressure tower enter a recovery tower. The top of the pre-distillation tower heats the reboiler of the negative-pressure tower, the top of the pressurized tower heats the reboiler of the medium-pressure tower, the top of the medium-pressure tower heats the reboiler of the atmospheric tower, and the top of the atmospheric tower heats the reboilers of both the pre-distillation tower and the recovery tower. The top of the recovery tower heats the reboiler of the negative-pressure tower. Simultaneously, the bottom products of the pre-distillation tower, pressurized tower, medium-pressure tower, and recovery tower are used to preheat their respective feeds. This invention employs parallel flow splitting and multi-effect thermal coupling technology, which significantly reduces the energy consumption of high-water-content crude methanol refining without relying on high-power heat pumps. Steam consumption can be reduced to below 0.56 tons / ton of refined methanol, and it has the advantages of low energy consumption, simple control, and wide applicability.

The present disclosure relates to a super absorbent polymer having a high water content and a method for preparing the same. The super absorbent polymer according to the present disclosure has a relatively high water content compared to a conventional one but has no degradation in absorption-related physical properties, and thereby can be used in various fields.

The application provides an inorganic gel coagulation inhibitor and a preparation method and application thereof, and the preparation raw material of the inorganic gel coagulation inhibitor comprises acrylamide, temperature-resistant and salt-resistant monomers, cationic monomers and initiators in specific proportions. The acrylamide, temperature-resistant and salt-resistant monomers and cationic monomers are selected and matched, so that the obtained inorganic gel coagulation inhibitor has high steric hindrance effect and cationic group shielding effect, can inhibit the rapid coagulation of silicate and metal cations to form a precipitate, can effectively delay the gelation time of the inorganic gel, and is further applied to water control in the profile control and flooding of high water content oilfields, is helpful to realize the expansion of the swept volume of injected water, improves the water flooding sweep effect, and has a good application prospect.

A self-preserved mild liquid detergent composition useful for laundry applications is disclosed. The liquid detergent composition contains the following components: glycerin, which is present in the detergent composition at less than 30 wt % based on the total weight of the liquid detergent composition; at least one anionic surfactant; at least one non-ionic surfactant; ethanol in an amount of 0.1-4 wt % based on the total weight of the liquid detergent composition; at least one buffer; and water in an amount effective to provide a water activity (wa) above 0.8 and up to 0.95 (0.8<aw≤0.95), thus enabling it to be self-preserved. Significantly, the liquid detergent composition does not contain a preservative.

The application relates to a kind of precipitation devices for sand layer foundation, comprising well body, the well body sequentially comprises at least one standard section and one water passing section from top to bottom;Standard section includes second standard section steel cylinder and first standard section steel cylinder;Water passing section includes first water passing section steel cylinder, third water passing section steel cylinder and second water passing section steel cylinder arranged concentrically from outside to inside;First water passing section steel cylinder wall is provided with a plurality of water passing holes, first water passing section steel cylinder and third water passing section steel cylinder are filled with water filtering gravel, and water passing pipe is arranged between third water passing section steel cylinder and second water passing section steel cylinder.The above-mentioned precipitation device adopts standard section and water passing section to jointly form well body, forms supporting structure by steel cylinder, and water passing structure (water passing structure is composed of water passing hole, water filtering gravel and water passing pipe) is arranged in water passing section, which can ensure that groundwater can successfully enter the well body, and can also prevent hole collapse in sand layer with high water content.

The invention discloses an underwater anti-scouring curing agent based on all-solid waste salt-alkali synergistic excitation and a preparation method. The curing agent comprises the following raw materials in parts by weight: 75-85 parts of an all-solid waste-based cementing material; 1.5 to 2.5 parts of an anti-dispersing agent; 0.15 to 0.25 part of a water reducing agent; 0.05 to 0.1 part of a defoaming agent; the all-solid-waste-based cementing material is prepared from 40-50 parts of carbide slag, 20-30 parts of blast furnace slag, 20-30 parts of fly ash and 20-30 parts of ardealite. 45-60 parts of blast furnace slag; 9-11 parts of fly ash and 6-12 parts of ardealite. The preparation method comprises the following steps: pretreating ardealite; activating the solid waste-based cementing material; compounding a functional additive; and packaging the product. The method is suitable for seabed or offshore sludge with high water content, can be directly used after being mixed with seawater, is simple and convenient in construction process, can be quickly applied to various hydraulic structures such as offshore wind power foundations and cross-sea bridges, and meets the anti-scouring and repairing requirements.