1790 results about "Compressive resistance" patented technology

The invention belongs to the technical field of multi-stage centrifugal pump production, and particularly relates to an automatic production line for assembling a pump cover of a multi-stage centrifugal pump, which mainly comprises a lifting type turnover assembly, a first extrusion assembly, a second extrusion assembly, a strake pushing manipulator and an inner supporting piece feeding assembly, for a reinforced pump cover composed of a pump cover piece, an inner supporting piece and an outer hoop piece, a pump cover blank is adsorbed through a lifting type overturning assembly and is driven to overturn around the axis of the pump cover blank, and a first extrusion assembly and a second extrusion assembly are jointly used for sequentially extruding, forming and machining the pump cover blank into a pump cover semi-finished product and the pump cover piece; the second extrusion assembly is matched with the strake pushing mechanical arm to additionally install multiple circles of outer strake pieces on the outer side of the pump cover piece, the inner supporting piece feeding assembly is used for additionally installing an inner supporting piece on the inner side of the pump cover piece which moves to the second station, in this way, automatic assembling of the reinforced pump cover can be achieved, the reinforced pump cover keeps the advantage of light weight, and meanwhile the assembling efficiency is improved. The compressive strength and the overall rigidity are qualitatively improved.

According to the mullite castable preparation method based on comprehensive utilization of the secondary aluminum ash nonferrous smelting slag, components are regulated and controlled by controlling the molar ratio of Al2O3 to SiO2, so that porous light mullite stably falls into a mullite phase region, and generation of excessive corundum phases is avoided. PMMA microspheres, corn flour, carbonized rice husks and SiO2 coated calcium carbonate composite pore-forming agent systems are adopted, and a layered slurry formula, gradient slip casting and segmented sintering processes are combined, so that the porosity and strength distribution are accurately regulated and controlled, and low-temperature sintering and amorphous phase change control are realized. By optimizing the grading of the porous light mullite aggregate and adding the homologous fine powder, the bonding strength and compressive strength of the castable are improved. And finally, the surface of the castable is coated with a compact mullite coating, so that the porosity is reduced, and the erosion resistance, corrosion resistance and stripping resistance are remarkably improved. The obtained castable has the advantages of light weight, high temperature resistance, high strength, low cost and excellent thermal stability and erosion resistance.

The invention discloses a yellow phosphorus furnace electrode paste and a preparation method thereof, and belongs to the technical field of yellow phosphorus furnace production, the yellow phosphorus furnace electrode paste comprises the following raw materials by mass: 55-65% of anthracite particles, 20-25% of petroleum coke, 5-10% of graphite chips, 18-25% of a composite binder, 0.3-1.5% of a composite antioxidant and 1.5-4.5% of an additive; the yellow phosphorus furnace electrode paste provided by the invention is produced according to the preparation method provided by the invention, and the resistivity, compressive strength and oxidation resistance can be synchronously improved through the design of carbon material multistage particle size distribution, a nano-reinforced composite binder and a synergistic anti-oxidation system in combination with an efficient drying and densification process; the problem that an existing electrode paste is poor in density and performance is effectively solved.

The invention relates to the field of geological exploration and geotechnical engineering, provides a rock mass dynamic mechanical parameter sensing method and system based on while-drilling parameters in order to dynamically obtain rock mass dynamic mechanical parameter characteristics in situ in real time in the drilling process, and provides a rock mass dynamic mechanical parameter sensing method and system based on while-drilling parameters by using multi-modal signals such as vibration, acoustic emission, torque and bit pressure through uniform characteristic engineering and multi-task learning. The instantaneous elastic modulus, the dynamic Poisson's ratio, the transient uniaxial compressive strength, the cohesive force and the internal friction angle can be synchronously and dynamically predicted in single drilling, and the limitation that only a single static parameter is estimated in a traditional method is broken through; a rock mass dynamic mechanical parameter acquisition model constructed on the basis of a multi-modal adaptive graph attention sequential network can effectively couple the physical proximity and the statistical association relationship of a sensor, and integrates expansion sequential convolution and a time perception Transform module, so that the characterization capability of emergencies (such as jamming / friction resistance) and long-term trends is considered on the premise of low time delay; therefore, the prediction accuracy is improved.

The invention discloses a high belite sulphoaluminate cement-based two-component grouting material and a preparation method thereof. The grouting material comprises a gelling component and a coagulating reinforcing component, wherein the gelling component is prepared from a high belite sulphoaluminate cement clinker and an additive A; the admixture A comprises a water reducing agent, a retarder and slow-release minerals; the coagulating and reinforcing component comprises ordinary Portland cement clinker, calcium hydroxide, gypsum and an additive B; the admixture B comprises a water reducing agent and an early strength agent. According to the high belite sulphoaluminate cement-based grouting material, the formula composition of the high belite sulphoaluminate cement-based grouting material is optimized, so that the hydration process of the high belite sulphoaluminate cement is more continuous and lasting, and the compressive strength of the obtained high belite sulphoaluminate cement-based grouting material can be continuously improved.

The invention relates to the technical field of crustal stress measurement, in particular to a rock core three-dimensional crustal stress measurement system and method based on multi-source data. The method comprises the following steps: acquiring well wall damage information, and identifying a damage type in the well wall damage information; multiple sections of core samples are selected based on the well wall damage information, and overburden pressure parameters are determined based on the multiple sections of core samples; a rock mechanics experiment is conducted on the rock core sample, rock mechanics parameters are generated, and the rock mechanics parameters comprise the Poisson's ratio, the Young modulus, the uniaxial compressive strength value and the tensile strength value. According to the method, the difference value of the maximum stress and the minimum stress is combined with the multi-source coupling constraint principal stress interval, the intersection points are identified through the topological visualization graph, the numerical range of the maximum principal stress and the minimum principal stress can be accurately determined, and then the information of the three-dimensional crustal stress is obtained.

The invention discloses a performance detection device for medical plastic bucket processing, and relates to the technical field of medical plastic bucket production equipment.The performance detection device comprises a first rack and a second rack, the first rack and the second rack are arranged side by side, and the second rack is located on the outer side of the first rack; a conveying belt is mounted above the first rack; a first extrusion assembly and a second extrusion assembly are mounted above the conveying belt, and the first extrusion assembly and the second extrusion assembly are the same in structure; a camera is fixedly connected to the interior of one side of the second rack; a first driving motor is installed on the top of the second rack, two transverse sliding rails are installed on the top of the inner side of the second rack, longitudinal sliding rails are fixedly connected to the sliding ends of the transverse sliding rails, second air cylinders are fixedly connected to the sliding ends of the longitudinal sliding rails, and pneumatic connectors are fixedly connected to the telescopic ends of the second air cylinders. According to the invention, the efficient pressure resistance, sealing and high-temperature resistance detection of the medical plastic bucket is realized, and the processing quality of the medical plastic bucket is greatly improved.

The invention provides a working face limited narrow fertile groove flow state solidified soil backfill construction method, and belongs to the technical field of flow state solidified soil application construction.The method comprises the steps that a backfill area is divided into partition blocks not exceeding 10 m and backfill sections with the thickness being 1 m, then an optimal backfill path is designed, and a cross path network is established to guarantee the filling uniformity; a multi-branch pumping system is adopted to convey the flow-state solidified soil, and flow velocity and pressure parameters are calculated by applying a hydrodynamic equation set. Construction is carried out according to the alternate sequence of 1-3-5-7 and 2-4-6-8 through a jump type pouring method, and the slump of the mixture is intelligently monitored and controlled to be 180-240 mm. Through penetration type electronic compactness detection, the unconfined compressive strength within 28 days is finally 0.8-1.5 MPa, the accumulative settling volume is controlled within 10 mm, high-quality control over backfilling of the narrow fertilizer groove space is achieved, and the technical problem that uniform backfilling construction of the flow-state solidified soil is difficult to control under the condition that the narrow fertilizer groove space is limited is solved.

The invention relates to the technical field of ultra-high-performance concrete materials, in particular to a low-carbon gold tailing-based ultra-high-performance concrete material suitable for a large-gradient pavement and a preparation method of the low-carbon gold tailing-based ultra-high-performance concrete material. According to the invention, the multi-stage gold tailings and the machine-made sand are adopted to replace quartz sand in a traditional ultra-high performance concrete material, and a low-carbon cementing material prepared from a large amount of solid waste and a limited early strength activator is adopted to replace traditional high-grade cement with a large mixing amount and is cooperated with a composite admixture and steel fibers; and the low-cost and environment-friendly ultra-high performance concrete material is prepared. The ultrahigh concrete material prepared by the invention has high compressive strength, high breaking strength, high toughness and excellent freezing resistance and chloride ion permeability resistance, and also has the performance of autonomously expanding flow, thereby meeting the construction requirements of cast-in-place of ultrahigh-performance concrete in a large-gradient pavement scene.

The invention discloses a road cementing material based on bulk solid wastes and a preparation method thereof, and belongs to the field of geopolymer cementing materials. The material is prepared from 35-38 parts of fly ash, 15-18 parts of acid-washed red mud, 22-25 parts of carbide slag, 20-23 parts of phosphogypsum, 5-8 parts of rice hull ash, 6-9 parts of a water reducing agent and water, and the water-binder ratio is (0.4-0.5): 1. Wherein the pickling red mud is treated by 5-6% dilute sulphuric acid (pH is 8-9, and heavy metal is reduced by 30%), and the rice hull ash (SiO2 is greater than or equal to 85%) and the nano silicon dioxide (10-30nm) synergistically optimize the microstructure. The 28-day compressive strength of the material is larger than or equal to 35 MPa, the load cycle strength loss rate is smaller than or equal to 5%, the CO2 emission amount is 62 kg / t, the heavy metal leaching concentration is lower than the national standard by 50%, and the cost is only 31.6% of that of traditional cement. According to the invention, efficient synergistic utilization of four solid wastes of fly ash, red mud, carbide slag and ardealite is realized, and the concrete has the characteristics of high strength, low pollution, salt corrosion resistance and the like, is suitable for heavy-duty road base and severe cold area engineering, and has remarkable environmental protection and economic values.

The invention belongs to the technical field of engine nacelles, and particularly relates to an engine nacelle fairing with an inner supporting framework system.The engine nacelle fairing is reasonable in design and is mainly composed of a rectifying outer cover, a first inner supporting framework, a second inner supporting framework, an arc-shaped air guide pipe and an annular cover plate; a plurality of sets of first positioning protrusions and second positioning protrusions corresponding to the first positioning protrusions are installed in an annular cavity of the rectification outer cover, and the first inner supporting frameworks or the second inner supporting frameworks are connected in an inserted mode through the first positioning protrusions and the second positioning protrusions corresponding to the first positioning protrusions. The first inner supporting framework, the second inner supporting framework and the arc-shaped air guide pipe can be pre-assembled into an inner supporting framework system, the annular cover plate is used for sealing the annular cavity of the rectification outer cover, in this way, the overall compressive strength of the engine nacelle fairing can be greatly improved, and meanwhile heat generated by working of an engine can be used for achieving freezing prevention of the fairing.

The invention relates to the technical field of river bank protection, in particular to a river bank slope protection for cofferdam construction and a construction method thereof. S2, construction of a near-water area structure; s3, construction of a far water area structure; s4, ecological enhancement; triple optimization of river bank protection is achieved through dynamic water level monitoring and modular design, a double-layer reinforced concrete and elastic sealant structure is adopted in a near-water area, the compressive strength is improved by 20%, the crack width is smaller than or equal to 0.2 mm, and material waste is reduced by 15% in cooperation with dynamic width adjustment (+ / -2 m); the mold bag concrete slope protection is combined with an atomization spraying system, the anti-scouring capacity reaches 5 m / (m.s), the vegetation coverage rate is larger than or equal to 80% within 3 months, and the water and soil loss rate is reduced by 70%; the modular honeycomb structure inflation assembly efficiency is improved by 40%, the transportation cost is reduced by 50%, the distributed sensors achieve structure displacement / pressure three-level early warning, the operation and maintenance cost is reduced by 70%, the overall service life is prolonged by more than 5 years, and an ecological-engineering collaborative protection system is formed.

The invention provides a high-performance fiber-reinforced cement-based material and a preparation method thereof, and belongs to the technical field of building materials, the high-performance fiber-reinforced cement-based material comprises the following components by weight: 30-70% of ordinary Portland cement, 10-30% of pretreated solid waste incineration bottom ash, 0.5-2% of polypropylene fiber, 8-12% of water, and 0.5-1.5% of a water reducer; during preparation, the raw materials are weighed according to the proportion, a high-performance fiber-reinforced cement-based material sample is prepared through ultrasonic stirring, water adding stirring, fluidity adjusting, pouring vibrating and curing, the compressive strength of the prepared sample exceeds 30 MPa, the porosity is lower than that of a traditional material when the replacement rate of the pretreated solid waste incineration bottom ash is 5-10%, and the durability is remarkably improved; meanwhile, waste is effectively utilized, natural resource consumption and carbon emission are reduced, the curing efficiency of heavy metal ions in solid waste incineration bottom ash exceeds 98%, and double breakthrough of environmental protection and high performance is achieved.

A toy ball includes an clastic shell that defines a receiving cavity and an actuation module mounted in the cavity. The actuation module is detachably connected to the clastic shell and provides driving force to roll and / or enhance bouncing. The clastic shell includes expanded thermoplastic polyurethane (E-TPU) to provide low weight, high rebound, and compressive resistance.

The invention belongs to the technical field of building materials, and particularly relates to a light prefabricated concrete wallboard and a production method thereof. The light prefabricated concrete wallboard is prepared by coating the main component fly ash of the concrete wallboard and cooperating with the combined action of the carbon nanotubes and the basalt fibers, so that the compressive strength of the material is effectively improved, the impact resistance is improved, and meanwhile, good combustion performance is obtained.

The invention relates to the technical field of building materials, and provides washing gangue concrete with high slump loss resistance and a mixing process thereof. The high-slump-retaining washed gangue concrete is prepared from the following raw materials in parts by weight: 200 to 220 parts of cement, 140 to 150 parts of mineral powder, 60 to 65 parts of fly ash, 680 to 720 parts of machine-made sand, 950 to 970 parts of washed gangue, 150 to 160 parts of water, 16 to 17.5 parts of a water reducing agent, 0.15 to 0.3 part of a slump retaining agent and 4 to 4.3 parts of polyethylene glycol. The slump retaining agent is hydroxypropyl methyl cellulose ether; and the viscosity of the hydroxypropyl methyl cellulose ether is 100 thousand mPa.s to 300 thousand mPa.s. According to the technical scheme, the problems of poor slump retaining performance and low compressive strength of washed gangue concrete in the prior art are solved.

The invention discloses compression-resistant glass and a preparation method thereof, and relates to the technical field of special glass. When the compression-resistant glass is prepared, an anorthite crystal phase is used as a main material, a wollastonite crystal phase is used as an auxiliary material, and zinc, barium, boron, sodium, antimony and titanium elements are added, so that the compression-resistant glass ceramic is prepared; the preparation method comprises the following steps: mixing tetraethoxysilane, zirconium oxychloride octahydrate and 3-glycidyl ether oxypropyl trimethoxy silane, adding hydrochloric acid, and stirring to obtain modified sol; the preparation method comprises the following steps: mixing hydroxyl-terminated polysiloxane, trimethyl ethyoxyl silane, methyl triethyoxyl silane and octadecyl triethyoxyl silane, adding a hydrochloric acid solution, and reacting to prepare an organosilane modified solution; mixing the modified sol and the organosilane modified solution, coating the surface of the compression-resistant microcrystalline glass with the mixture, and curing to obtain the compression-resistant glass. The compressive glass prepared by the invention has the advantages of high compressive strength, hydrophobicity, wear resistance and high surface hardness.

The invention relates to the field of concrete preparation, and particularly discloses green low-carbon concrete prepared based on recycled aggregate and a preparation method of the green low-carbon concrete. The green low-carbon concrete is prepared from the following raw materials in parts by weight: 10-12 parts of fly ash, 20-30 parts of slag, 80-100 parts of modified recycled aggregate, 5-8 parts of an exciting agent, 15-20 parts of cement, 10-20 parts of water, 1-3 parts of sodium gluconate and 0.5-1.5 parts of a water reducing agent, and the modified recycled aggregate is recycled aggregate subjected to surface activation treatment; the preparation method comprises the following steps: sequentially adding and mixing the fly ash, the slag and the modified recycled aggregate, carrying out dry mixing at a rotating speed of 30-50r / min for 2-3min, adding the exciting agent, the water and the water reducing agent, and uniformly stirring to form a uniform concrete mixture; and curing to obtain the product. The composition can be used for engineering construction and has the advantages of being green, low in carbon and high in compressive strength.

The invention relates to a plugging agent suitable for a malignant leakage formation and a preparation method and application thereof, and belongs to the technical field of petroleum and natural gas drilling engineering. According to the invention, through compounding of the skeleton particles, the intelligent response adhesive and the impact-resistant reinforcing component and cooperation of the skeleton particles and the intelligent response adhesive, a mechanical barrier can be rapidly formed at a crack inlet and a crack is dynamically filled, so that the plugging efficiency and the anti-scouring capability are improved, the compressive strength of a plugging layer is greater than or equal to 20MPa, and the anti-scouring time is prolonged to more than 48 hours; the intelligent response adhesive enables the plugging agent to have good intelligent response characteristics and reservoir protectiveness, self-adaptive adjustment in the plugging process is ensured through a temperature and pH dual mechanism, the biodegradation rate is larger than or equal to 70%, the reservoir pollution risk is remarkably reduced, the compressive strength of a plugging layer formed at high temperature and high pressure is larger than or equal to 20 MPa and is improved by 100% or above compared with that of a traditional plugging agent, and the plugging agent has good application prospects. The biodegradation rate is greater than or equal to 70%, and the plugging problem of the ultra-deep malignant leakage stratum is effectively solved.

The invention discloses a novel pillar-free shallow hole shrinkage mining method with stud recovery, which comprises the following steps of: stoping ore bodies from top to bottom, and stoping a to-be-mined room (9.1) and a to-be-mined stud (8.1) of a next middle section after stoping of the previous middle section of ore body is finished; a stoping stud (8.2) is communicated with an outside-vein pedestrian ventilation filling raise (6) arranged on a footwall surrounding rock (16) of an ore body through a stud connection way (5), the lower end of the outside-vein pedestrian ventilation filling raise (6) is communicated with the top of a middle section stud ore removal roadway (10), and the top end of the outside-vein pedestrian ventilation filling raise (6) is communicated with an upper middle section stud ore removal roadway (3). And the right end of the upper middle section column ore removal roadway (3) is communicated with the upper middle section haulage roadway (2). According to the method, the problems of large intermediate pillar ore loss and difficulty in recovery in a traditional shallow hole shrinkage method are solved, the resource recovery rate is increased to 88% or above, the compressive strength of the filled artificial intermediate pillar is superior to that of a primary pillar, and the stope stability is remarkably improved.

The invention discloses a UHPC-foam concrete composite material with a sandwich structure and a preparation method of the UHPC-foam concrete composite material. The composite material comprises two ultra-high performance concrete (UHPC) panel layers, a foam concrete sandwich layer of a negative Poisson's ratio three-dimensional framework prepared through a photocuring three-dimensional printing technology is arranged between the two ultra-high performance concrete (UHPC) panel layers, and the three-dimensional framework is of an inward-concave honeycomb topological structure and has the characteristic of transverse expansion after being pressed; impact stress can be effectively dispersed, and a dual energy dissipation path is formed through a synergistic effect with a porous energy absorption mechanism of the foam concrete. The panel layer and the sandwich layer are combined through a layered pouring process, and an interface is subjected to scabbling treatment so as to enhance the bonding strength. The composite material is superior to a traditional material in the aspects of compressive strength and energy absorption performance, is suitable for the fields of anti-explosion buildings, military protection engineering, frontier defense facilities and the like, and has a wide application prospect.

The invention relates to the technical field of ceramic microbeads, in particular to a ceramic microbead buoyancy material and a preparation process thereof.According to the ceramic microbead buoyancy material and the preparation process thereof, a nickel-plated layer is formed on the surface of each ceramic microbead, and spraying and coating treatment is conducted on the surface of each nickel-plated ceramic microbead through strengthening paint; amino groups of the aminated nano cerium oxide hollow microspheres are chelated with nickel atoms on the surfaces of the nickel-plated ceramic microspheres through coordinate bonds, so that stable combination between the coating and the nickel-plated ceramic microspheres is enhanced; in the preparation of the ceramic microbeads, the dispersity of mica powder in ceramic slurry can be improved and a multi-stage pore structure is formed by adding a reinforced compound and carrying out stepped graded heating calcination, so that the interface bonding strength of the reinforced compound in the ceramic microbeads and a ceramic matrix is improved, and the compressive strength of the ceramic microbeads is further improved.

The invention discloses an alkali-free accelerator and a preparation method and application thereof in the technical field of concrete additives, and the alkali-free accelerator provided by the invention comprises the following components in percentage by mass: 40%-50% of aluminum sulfate, 10%-15% of magnesium sulfate, 0.2%-0.6% of diethanol amine, 0.5%-1% of catechol-4-ammonium sulfonate, 5%-10% of a stabilizer and the balance of water. The stabilizer comprises silicate dispersion liquid and silica sol. The alkali-free accelerator provided by the invention can be used for spraying concrete, the mixing amount of the alkali-free accelerator is generally 4-6% of the mass of cement, the alkali-free accelerator is good in rapid setting effect and has excellent early and later compressive strength, and meanwhile, the alkali-free accelerator has relatively excellent stability.

The present invention relates to an activator for cementless binders comprising: a silicate of an alkali metal or alkaline earth metal or a hydrate thereof; a carbonate of an alkali metal or alkaline earth metal or a hydrate thereof; and a hydroxide of an alkali metal or alkaline earth metal or a hydrate thereof. The invention also relates to a cementless binder comprising said activator and to a cementless cementitious material comprising said cementless binder. Compared with the traditional ordinary Portland cement, the building material containing the cement-based cementing material has better compressive strength and has the characteristic of environmental protection.

The invention relates to the technical field of building materials, and particularly discloses a bridge expansion joint cement-based repairing mortar material and a preparation process thereof. The invention discloses a cement-based repair mortar material for bridge expansion joints. The cement-based repair mortar material is prepared from the following raw materials in parts by weight: 20-30 parts of Portland cement, 1-5 parts of benzoxazine resin, 30-40 parts of sandstone, 0.5-2 parts of nano silicon dioxide, 0.5-2 parts of a water reducing agent, 1-3 parts of hydrated calcium silicate, 15-25 parts of water and 10-15 parts of modified polyurethane, the preparation method comprises the following steps: dispersing the nano silicon dioxide in water, carrying out ultrasonic treatment, uniformly stirring to form a stable suspension, respectively adding the hydrated calcium silicate and the modified polyurethane, uniformly stirring, sequentially adding the Portland cement, the benzoxazine resin and the gravel, and stirring and mixing until the slurry is uniform to obtain the repair mortar material. The composition can be used for repairing bridge expansion joints, and has the advantages of good durability, high compressive strength and the like.

The invention discloses a method for preparing low-carbon cement based on construction wastes, which comprises the following steps: carrying out deep hydrothermal reaction on the construction wastes by using an autoclave under high-temperature and high-pressure conditions, so that silicon-aluminum minerals in the construction wastes are subjected to more thorough hydrothermal rearrangement to generate more stable hydrated silicate and aluminosilicate; the reaction activity of the clinker can be improved at the subsequent lower calcining temperature, so that the utilization rate and the high activity of complex components such as the building wastes in the cement preparation process are realized. The low-carbon cement disclosed by the invention is relatively high in later compressive strength and breaking strength, the strength grade of the low-carbon cement is 32.5, and the low-carbon cement meets building requirements and can be widely applied to the fields of buildings, roads and the like. According to the invention, closed cycle of solid waste-material is realized through waste recycling, and double innovation of material performance and ecological benefit is achieved.

The invention discloses a coal gangue-based composite spraying material and a preparation method thereof. The preparation method comprises the following steps: preparing modified coal gangue fine aggregate; preparing to obtain a cementing material; and stirring the modified coal gangue fine aggregate, the cementing material and water to obtain the coal gangue-based composite spraying material. The high-performance coal gangue-based composite spraying material is prepared by innovatively utilizing the combination of the modified coal gangue fine aggregate and the cementing material in a specific ratio. According to the invention, the problem of environmental pollution caused by using coal gangue as solid waste is effectively solved, and the compressive strength, wear resistance and luminescence property of a final product are also remarkably improved.

The invention discloses a method for regulating and controlling a pore structure of a cement-based supercapacitor, and belongs to the technical field of energy storage. The method for regulating and controlling the pore structure of the cement-based supercapacitor comprises the following steps: firstly, preparing foam, then uniformly stirring cement and sand, adding water and a water reducing agent, fully stirring, and finally, doping the foam into slurry, and fully stirring to obtain the slurry. And pouring the stirred slurry into a mold, standing for 24 hours, and demolding to obtain the cement matrix. And packaging the front, back, left and right surfaces of the cement matrix by using epoxy resin, and drying at 60 DEG C for 3 days. And soaking the treated test piece in a 2mol / L KOH solution for 5 days, and then manufacturing the test piece into the cement-based supercapacitor. According to the invention, the regulation and control of the pore structure of the cement-based supercapacitor are realized, the treated cement-based supercapacitor has better pore connectivity, the pores show tropism, the conductivity and the capacitance are better, the specific capacitance can reach 63.3 F / m < 2 > to the maximum, and the compressive strength and the breaking strength are reduced.

The invention provides a reservoir mechanical integrity evaluation method under high-frequency injection and production. The evaluation method comprises the steps that S1, rock sample compressive strength and mechanical property parameters of a reservoir under multiple confining pressures are determined; s2, determining the upper limit and the lower limit of the reservoir pressure of the energy storage reservoir in the injection-production process; s3, obtaining the critical fatigue strength of the reservoir rock sample under a plurality of confining pressures within the designed age limit; s4, determining a deviating stress-average stress plane according to the compressive strength and the critical fatigue strength of the rock sample under the plurality of confining pressures, and dividing rock failure zones on the deviating stress-average stress plane; and S5, establishing a geomechanical model to predict the stress level of the reservoir, and judging the safety of the reservoir during the cyclic injection-production period from the perspective of mechanical integrity. Safe, efficient, economical and lasting operation of the energy storage warehouse is guaranteed, and a feasible method is provided for expanding the application range of compressed air energy storage.

The invention provides solid waste-based delayed coagulation micro-expansive cement and a preparation method thereof, and belongs to the technical field of building materials. The solid waste-based delayed coagulation micro-expansive cement is prepared from the following raw materials in percentage by mass: 40%-50% of Portland cement clinker, 0.04%-0.06% of a delayed coagulation type grinding aid, 8%-12% of high-calcium steel slag, 10%-16% of slag, 8%-16% of fly ash, 8%-12% of modified phosphogypsum and 8%-12% of calcium-containing powder, wherein a preparation method of the modified phosphogypsum comprises the following steps: uniformly mixing phosphogypsum with phosphorus tailings subjected to high-temperature calcination, and storing for 10-30 days to obtain a mixture; and mixing the mixture with high-calcium steel slag, grinding, and drying to obtain the modified phosphogypsum. The solid waste-based delayed coagulation micro-expansive cement has the advantages of stable delayed coagulation effect, shrinkage compensation effect, continuous increase of later strength and the like; wherein the initial setting time of the solid waste-based delayed coagulation micro-expansive cement is 350 to 380 minutes, and the final setting time of the solid waste-based delayed coagulation micro-expansive cement is 420 to 460 minutes; 28-day compressive strength is greater than or equal to 45 MPa; the 28-day dry shrinkage rate is less than or equal to 0.09%; and the 28-day linear expansion rate is less than or equal to 0.5%.