1731 results about "Gypsum" patented technology

The invention provides a concrete super-early-strength quick-hardening material, and relates to the field of building materials. The high-strength concrete comprises the following components in percentage by mass: 40%-50% of calcium aluminate, 30%-40% of gypsum, 8%-15% of high aluminum, 1%-3% of an additive, 3%-12% of an exciting agent and 1%-5% of an auxiliary material. According to the super-early-strength quick-hardening material provided by the invention, hour-level strength can be quickly and stably improved, and the strength increasing curve of each age is smooth and stable, so that the requirements of scenes such as road repair and tunnel construction on early strength can be met; it can be guaranteed that the 28-day compressive strength of the material breaks through 70 MPa, the later strength is kept stable, and the long-term safety of an engineering structure is guaranteed; the anti-seepage, anti-freezing and anti-erosion capabilities are realized in a complex environment, the service life of a project can be effectively prolonged, and the maintenance cost is reduced. In addition, the invention further provides a preparation method of the concrete super-early-strength and quick-hardening material, and the preparation method is used for preparing the super-early-strength and quick-hardening material provided by the invention.

A pretreatment mixing and stirring device includes a cylindrical housing having a top plate, a bottom plate arranged to oppose to the top plate, a side plate arranged between the top plate and the bottom plate, and a mixing and stirring region where a calcined gypsum and an additive are mixed and stirred in an interior surrounded by the top plate, the bottom plate, and the side plate, a disk-shaped rotating plate arranged inside the housing, a rotating drive shaft, penetrating the top or bottom plate, and coupled to the rotating plate, a calcined gypsum supply port, arranged in the top plate, and supplying the calcined gypsum to the mixing and stirring region, and an additive supply port, arranged in at least one of the top and side plates, and supplying the additive to the mixing and stirring region.

The invention belongs to the technical field of bottom plate mudstone treatment, and particularly relates to a rapid reinforcing material and method for bottom plate mudstone. The rapid reinforcing material for the bottom plate mudstone comprises the following components in parts by mass: a material A: 40-60 parts of sulphoaluminate cement, 15-40 parts of Portland cement and 1-2 parts of a naphthalene water reducer, and further comprises an initiator, a cross-linking agent and a redox agent; and a material B: 80-100 parts of gypsum, 10-30 parts of acrylamide and 2-4 parts of an aluminate coupling agent. According to the rapid reinforcing material for the bottom plate mudstone, the on-site argillization bottom plate can be hardened on site, a bottom plate hardening layer meeting the bearing condition is formed, the labor cost and the time cost caused by cleaning of bottom plate argillization substances are reduced, the passing smoothness is guaranteed, the project progress is accelerated, and the project benefits and the economic benefits are improved.

The invention relates to a method for improving early-stage performance of an all-solid-waste cementing material, and aims to improve the early-stage performance of the cementing material. At present, the early strength (1d strength) of an all-solid waste cementing material is generally low, but the characteristic is closely related to construction efficiency and is a key limit for large-scale application of the all-solid waste cementing material. Sintering is not included in the working procedures, and the product does not contain cement clinker. The method comprises the following steps: selecting industrial solid wastes such as steel slag, blast furnace water slag, iron alloy slag, silicomanganese slag, industrial byproduct gypsum, sintering fly ash, fly ash, calcined coal gangue and the like as raw materials; the industrial solid waste is subjected to independent or mixed grinding treatment; by optimizing the raw material ratio and introducing key component minerals, the specific surface area of the cementing material is increased, and active sites of the key minerals are dissociated and exposed. The mass of the introduced key components for optimizing the raw material ratio accounts for less than or equal to 15% of the total mass of the cementing material, the mass fraction of the key and active minerals is increased by less than or equal to 10%, and the early strength of the all-solid waste cementing material is increased by 30%.

The invention discloses a mechanical wall-cutting and filling mining method for gypsum ore. Aiming at the problems of difficulty in ventilation, high labor intensity, low production efficiency, poor surrounding rock stability and the like in a traditional wall cutting filling method, the method realizes safe and efficient mining of an extremely thin ore body through mechanical ore breaking, precise separation of a photoelectric ore separator and an in-situ immediate filling process of waste rocks. The method comprises the steps of ore block parameter design, mining preparation cutting, mechanical stoping, photoelectric mineral separation, barren rock in-situ filling and goaf ground pressure management, the stope structure and process can be dynamically adjusted according to the thickness and inclination angle of an ore body, and operation accuracy and safety are guaranteed through laser monitoring and supporting measures. According to the method, the mechanization level and mining and stoping efficiency of a gypsum mine mining process are remarkably improved, manual selection operation is reduced or even canceled, the labor intensity and cost of workers are reduced, the operation environment is improved, the stability of surrounding rock is improved, the method is suitable for mining of extremely thin ore bodies and other similar ore bodies under different conditions, and a foundation is laid for mine intelligent construction.

The invention relates to the technical field of tunnel engineering safety prevention and control, and provides a gypsum rock tunnel water disaster risk evaluation and prevention and control scheme selection method which comprises the following steps: step 1-3, based on parameters such as rock mass structural integrity, stratum karst development degree, water yield property, groundwater corrosivity, gypsum rock mineral composition, expansibility and corrosion property, establishing a grading evaluation system, dividing corresponding grades and determining influence indexes R1-R8; 4, adopting an AHP method, an entropy weight method and a CRITIC method to perform multi-dimensional weight calculation on the subjectivity, objectivity and conflict influence indexes, correcting abnormal weights in combination with expert experience and verification rules, generating a comprehensive score, dividing risk grades, and matching graded prevention and control measures; and 5, optimizing and adjusting prevention and control measures in real time through a parameter risk level dynamic judgment and construction method matching mechanism. According to the method, multi-source parameter dynamic empowerment can be fused, and a full-life-cycle prevention and control method with accuracy, timeliness and self-adaptability is provided for tunnel engineering.

The invention belongs to the technical field of industrial solid waste resource recycling, and discloses a nano composite filling material based on in-situ acid-base mutual modification enhancement and application thereof. According to the nano composite filling material, the alkalinity of the red mud and the acidity of the desulfurized gypsum are used for neutralization, the alkalinity of a system is reduced, a synergistic reaction is excited, a large number of ettringite crystals playing a key enhancing role are generated under the regulation and control of a nano material, and the ettringite crystals and a geopolymer form an interpenetrating network structure. The obtained slurry is low-viscosity and high-fluidity Newtonian fluid (diffusivity gt and 250 mm), the 7-day strength is larger than 2.0 MPa, the pH value is 7-9, and the fluorine ion concentration is lt; and the leaching of heavy metal ions is qualified, and the method is environment-friendly and safe. Efficient resource utilization of the red mud and the desulfurized gypsum is achieved, and the method is simple in process, low in cost and especially suitable for mine filling and engineering backfilling.

The present invention relates to the technical field of comprehensive utilization of industrial solid waste, specifically a graphite tailings-saw mud road subbase material and its preparation method and application, including the following components in parts by weight: 40-55 parts of graphite tailings, 45-60 parts of saw mud, 0.5-2 parts of phase change microcapsules, 5-10 parts of slaked lime, 10-20 parts of fly ash, 0.5-1.5 parts of titanium gypsum, 0.5-2 parts of steel slag powder, 5-15 parts of water and 0.05-0.2 parts of dispersant; the 7d unconfined compressive strength range of the graphite tailings-saw mud road subbase material is 2.64-3.87MPa, and the compressive strength loss rate (BDR) range is 82.1%-86.2%. By using titanium gypsum and steel slag powder, a gelling material with micro-expansion properties, to solidify the graphite tailings-saw mud, the shrinkage and temperature shrinkage properties of the subbase material are optimized, and the antifreeze ability of the subbase material is improved by adding phase change microcapsules.

The invention relates to the technical field of building materials, in particular to a cementing material for a fabricated wall prepared from multi-element solid waste and a preparation method of the cementing material. The preparation method comprises the following steps: 25-55 parts of fly ash, 25-65 parts of blast furnace slag, 8-10 parts of lime, 1-5 parts of desulfurized gypsum, 3-6 parts of a first mixture, 2-5 parts of a second mixture and 5-8 parts of an alkali activator; the mass ratio of the metakaolin to the bentonite to the superfine calcium carbonate in the first mixture is 3: 2: 1; the mass ratio of the vermiculite to the expanded perlite to the glass beads in the second mixture is 2: 2: 1. Through the synergistic excitation effect of Ca < 2 + > and Na < + > and the addition of the first mixture and the second mixture, the cementing material forms a more stable microstructure. A hydration product SEM figure shows that C-S-H and C (N)-A-S-H gel are symbiotic to form a three-dimensional network, pores are filled with needle-like ettringite crystals, and in combination with the brucite phase anchoring effect, the mechanical properties, such as strength and durability, of the material are remarkably improved.

The invention relates to the field of building materials, and discloses a high-strength low-carbon cementing material regulated and controlled by a pH value and a preparation method and application thereof, the cementing material contains a main agent and an auxiliary agent, and the mass ratio of the main agent to the auxiliary agent is 100: 0.03-0.3; on the basis of the total mass of the main agent, the main agent comprises 60-80 wt% of an active component, 5-25 wt% of gypsum and 1-15 wt% of an exciting agent; the active component contains S95-grade mineral powder and a component A; the component A is selected from at least one of secondary steel slag powder, phosphorus slag powder, slag, secondary fly ash, metakaolin and silica fume; the exciting agent is selected from at least two of sintering process red mud, sulphoaluminate cement, salty mud, carbide slag, papermaking white mud and boric sludge, the exciting agent comprises the sintering process red mud, and the sintering process red mud accounts for 30-60 wt% of the total mass of the exciting agent; the pH value of the cementing material is 12.6-13.2 under the condition that the mass ratio of the cementing material to the water is 1: 10. The cementing material provided by the invention has the advantages of low production cost, no harm, moderate alkalinity and excellent mechanical strength.

The invention relates to the technical field of plasterboard processing control, in particular to a functional plasterboard processing control system which comprises a real-time data acquisition module, a dynamic flow adaptation module, a multi-nozzle cooperative control unit, a curing quality closed-loop regulation and control unit, a self-adaptive compensation algorithm module and a multi-process cooperative execution unit. The dynamic flow adaptation module generates an initial flow reference value based on a preset spraying coverage rate model, calculates an atomization efficiency attenuation coefficient in combination with the humidity compensation sub-model, and generates a dynamic flow instruction set by superposing a base material porosity weight. The multi-nozzle cooperative control unit generates a continuous flow distribution diagram through a spatial interpolation algorithm and a nozzle trajectory equation, and dynamically adjusts the atomization pressure and the opening and closing time sequence. Under abnormal working conditions, a parameter rollback mechanism calls historical snapshots to recover a control state, and an elastic weight solidification technology balances model stability and real-time adaptability. According to the method, dynamic adaptation of spraying parameters, collaborative optimization of working procedures and abnormal self-healing are achieved, and the uniformity of the coating is improved.

The invention discloses a spodumene concentrate resourceful treatment method which comprises the following steps: carrying out wet treatment on spodumene acid clinker to prepare lithium-removed filter residues and leachate; carrying out neutralization treatment and desulfurization treatment on the leachate to obtain a lithium-containing purified solution, gypsum and iron oxide red, and carrying out lithium extraction treatment on the lithium-containing purified solution to obtain a lithium salt and mirabilite; the lithium-removed filter residues are treated through a process combining a beneficiation method and a chemical method, and water glass, nano kaolinite, ceramsite aggregate and tantalum-niobium concentrate are obtained. According to the method, whole-process slag-free production of the spodumene concentrate is achieved, and meanwhile the lithium-containing compound with the high purity and the high quality is obtained; and various valuable products can be obtained.

The invention discloses equipment and a method for automatically detecting the hardness of a gypsum plaster board, and relates to the field of building material detection equipment. The automatic detection equipment for the hardness of the gypsum plaster board comprises a supporting assembly, the supporting assembly comprises a base and supporting columns, and the supporting columns are arranged at the two ends of the top face of the base; the fixing assembly is arranged on the top surface of the base, and the fixing assembly comprises a plurality of clamping pieces; the steel needle assembly comprises a plurality of steel needles and force value sensors, the force value sensors are arranged on the steel needles, the number of the steel needles is the same as that of the clamping pieces, and the steel needle assembly is movably arranged on the supporting column through a lifting assembly. The multiple samples are fixed to the base through the clamping pieces, the positions of the samples and the positions of the steel needles are adjusted so that the steel needles can be located over the preset measuring points of the corresponding samples, and finally the steel needles are driven by the lifting assembly to be inserted into the samples by the preset depth. According to the automatic detection equipment for the hardness of the gypsum plaster board, the time required for testing the hardness of the gypsum plaster board is shortened.

The invention discloses a phosphogypsum-based calcination-free low-carbon cementing material and a preparation method thereof. The phosphogypsum-based calcination-free low-carbon cementing material comprises the following components in percentage by weight: 10%-35% of phosphogypsum, 10%-35% of desulfurized gypsum, 5%-20% of sewage treatment sludge, 10%-35% of fly ash, 10%-35% of yellow phosphorus slag and 5%-20% of phosphorus tailing slag. The total amount of the ardealite and the desulfurized gypsum is controlled within 45%, and the total amount of the fly ash and the yellow phosphorus slag is controlled within 45%. The technical problems that an existing phosphogypsum-based cementing material is low in early strength, poor in performance stability and high in cost are effectively solved through a multi-solid-waste synergistic compatibility design and a calcination-free process.

The invention relates to the technical field of building materials, and discloses a composite cured red mud material for a salt freezing coupling environment and a preparation method thereof, and the composite cured red mud material comprises 27-49 parts of red mud, 24-47 parts of steel slag, 8-19 parts of fly ash and 3-15 parts of phosphogypsum. The method comprises the following steps: taking red mud, steel slag, fly ash and ardealite as raw materials, putting the raw materials into a stirrer, and fully mixing; adding water, continuously stirring and uniformly mixing to obtain a mixture; pouring the mixture into a mold and pressing into a cylindrical test piece; demolding and weighing, and after the weight is high, sealing and curing to prepare a sample; and soaking the cured sample in a salt solution to simulate a salt-freezing coupling environment, and then taking out the sample for freezing and thawing treatment.

The invention provides a water-resistant building gypsum-based material and a preparation method thereof. The material comprises a building gypsum base body, a hydrophobic film is cured on the surface of the building gypsum base body, and the hydrophobic film is formed by curing waterproof liquid; the building gypsum base body is prepared from four components including desulfurized building gypsum, blast furnace slag, calcium oxide and water, the water-binder ratio is 0.5-0.6, the mass ratio of the blast furnace slag to the desulfurized building gypsum is (1-5): (5-9), and the mass of the calcium oxide is 2%-10% of that of the blast furnace slag; the waterproof liquid comprises water, sodium methyl silicate, tetraethoxysilane, dimethyl silicone oil, sodium hydroxide and sodium silicate. According to the preparation method, a proper waterproof treatment mode is selected according to the size of a workpiece. The blast furnace slag and the calcium oxide are introduced into the desulfurized building gypsum formula, the calcium oxide can effectively excite the activity of the blast furnace slag in a building gypsum matrix, so that the water resistance of a building gypsum-based material is improved, the water resistance of the material is further improved by the waterproof liquid, and meanwhile, the material is endowed with hydrophobicity.

The invention relates to the technical field of soil improvement and remediation, in particular to an acid soil conditioner and a preparation method thereof. The acidic soil conditioner comprises an organic solid waste material and inorganic industrial solid waste, and the mass ratio of the organic solid waste material to the inorganic industrial solid waste is (0.5-1): 1. The organic solid waste material is prepared from the following components in parts by mass: 20 to 40 parts of modified charcoal and 10 to 30 parts of solid waste-based sludge; the inorganic industrial solid waste comprises 5-10 parts of ammonia alkali white mud, 8-15 parts of modified waste glass and 0.5-2 parts of gypsum. According to the acidic soil conditioner provided by the invention, solid wastes are effectively utilized, and meanwhile, the problem that soil acid-base neutralization and Al < 3 + > immobilization cannot be taken into consideration in related technologies is solved.

A full solid-waste micro-expansive concrete and its preparation method are provided, and relate to the field of concrete material technologies. The full solid-waste micro-expansive concrete includes the following components in parts by weight: 920-1060 parts of a coarse aggregate, 460-582 parts of a fine aggregate, 11-19 parts of an expansive agent, 389-512 parts of a modified solid-waste-based cementitious material, and 231-268 parts of water. The coarse aggregate is coal gangue. The fine aggregate is waste ceramic. The modified solid-waste-based cementitious material includes a solid-waste-based clinker, modified polyvinyl alcohol, and a modified anion exchange resin. The solid-waste-based clinker is prepared from the coal gangue, carbide slag, and desulfurization gypsum. The expansive agent is obtained by calcining the carbide slag. The concrete prepared can ensure the initial strength of the concrete, and guarantee continuous micro-expansion in the later stage, compensating for shrinkage and thereby increasing the overall strength of the concrete.

The invention discloses a mineral-based quick-setting high-strength grouting material for reinforcing high-altitude tunnel surrounding rock and a use method thereof, the mineral-based quick-setting high-strength grouting material is composed of a cementing material, sand and an additive, the cementing material is composed of Portland cement, aluminate cement, semi-hydrated gypsum and sulphoaluminate cement; the additives comprise a modifier, a coagulant, a retarder, a defoaming agent, a mineral admixture and an anti-freezing agent; the use amounts of the sand, the modifier, the coagulant, the retarder, the defoaming agent, the mineral admixture and the anti-freezing agent are respectively 2-3%, 0.1-0.5%, 0.1-0.5%, 0.1-0.5%, 0.1-0.5%, 0.5-1.5% and 10-20% of the mass of the cementing material. The rapid-hardening high-strength grouting material is suitable for high-altitude tunnel engineering with low average temperature throughout the year, and the rapid-hardening high-strength grouting material at low temperature can be rapidly hardened and achieve the effect of high strength without pre-curing by reasonably regulating and controlling the proportion of the components of the grouting material.

The invention provides light non-sintered ceramsite and a preparation method thereof, the non-sintered ceramsite is of a core-shell structure, an inner core is expanded perlite, a shell takes granite stone powder and desulfurized gypsum as main raw materials, and an interface modifier is added into the non-sintered ceramsite; the interface modifier comprises the following components in percentage by mass: 3%-8% of a silane coupling agent, 10%-18% of a nano silicon dioxide dispersion liquid, 25%-35% of a polyvinyl alcohol aqueous solution, 1.5%-3% of sodium carboxymethyl cellulose and the balance of deionized water. An interface modifier is added into the unfired ceramsite which takes expanded perlite as an inner core and takes a solid waste mixture such as granite powder and desulfurized gypsum as a shell, and the interface modifier can improve the physical and chemical characteristics of the surface of the expanded perlite and also can promote hydration reaction and interface bonding of shell slurry through a multi-component synergistic effect; the mechanical property and the stability of the unfired ceramsite are obviously improved.

The invention relates to the technical field of building materials, and particularly discloses an aluminate amorphous strength accelerator for steam-curing-free concrete as well as a preparation method and application of the aluminate amorphous strength accelerator. The invention discloses an aluminate amorphous strength accelerator for steam-curing-free concrete. The aluminate amorphous strength accelerator is prepared from the following raw materials in parts by weight: 35 to 45 parts of calcium aluminate amorphous powder, 55 to 65 parts of high-activity gypsum, 1 to 2 parts of an early strength type powder polycarboxylic acid water reducing agent, 0.1 to 1 part of lithium salt, 0.1 to 0.5 part of a retarder, 0.02 to 0.05 part of a reinforcing agent and 1 to 3 parts of a nano early strength agent, the proportion of amorphous glass in the calcium aluminate amorphous powder is greater than 85%; the calcium aluminate amorphous powder and the high-activity gypsum are doped into the Portland cement for synergistic hydration, and the early strength type powder water reducing agent, the lithium salt, the reinforcing agent and the nano early strength agent are utilized for synergistic interaction, so that the early strength and the volume stability of the prefabricated part are improved.

The invention relates to the technical field of mine filling materials, and provides a low-shrinkage steel slag powder mine filling cementing material and a preparation method and application thereof.The cementing material is prepared from, by weight, 30-40 parts of steel slag powder, 50-60 parts of mineral powder, 8-15 parts of desulfurized gypsum and 0-5 parts of excitant, the excitant is superfine cement clinker, and the specific surface area is larger than or equal to 600 m < 2 > / kg; through a cascade reaction path of early excitation, expansion compensation and continuous enhancement among the components such as the steel slag powder, the mineral powder and the desulfurized gypsum, the filling cementing material which is high in solid waste mixing amount, low in shrinkage and appropriate in strength and has environmental protection benefits and engineering applicability is realized, pollution and carbon are reduced, cost is reduced and benefits are increased for tailing treatment, and the filling cementing material is suitable for being used as a filling cementing material. And the comprehensive utilization way of the tailings and the metallurgical solid waste is further expanded.

The invention discloses a gypsum dehydration control method and system based on multi-parameter collaborative optimization, belongs to the technical field of gypsum dehydration control, and solves the problem of how to improve gypsum dehydration efficiency under a dynamic working condition. Comprising the steps of collecting key operation parameters, a parallel operation mechanism model and a data driving model in the gypsum dehydration process in real time, constructing a weighted multi-objective optimization function based on constraint conditions, performing real-time optimization by adopting model prediction control, and performing global multi-objective optimization by adopting a periodic evolutionary algorithm. Generating a final control instruction based on the fusion strategy and issuing the instruction to an execution mechanism; by combining multivariable real-time prediction, closed-loop optimization control and a self-adaptive learning mechanism, intelligent management is carried out on the dehydration process of the wet desulphurization byproduct gypsum, accurate control over the water content of a filter cake, optimization of washing water and energy consumption and high adaptability of a control system to dynamic working conditions are achieved, and the dehydration efficiency of the wet desulphurization byproduct gypsum is improved. Therefore, on the premise of ensuring the quality of the gypsum, the dehydration efficiency is maximized and the resource consumption is minimized.

The invention relates to the technical field of building engineering materials, in particular to an inorganic grouting material with adjustable curing time and a use method thereof. The inorganic grouting material provided by the invention comprises a main material and an adjusting material, the main material comprises the following components in parts by mass: 50-70 parts of sulphoaluminate cement clinker, 10-20 parts of quartz powder, 10-20 parts of gypsum, 3-5 parts of nano volcanic ash, 0.5-1 part of a water reducing agent and 0.1-1.5 parts of a retarder; the adjusting material comprises a composite coagulant and hydroxypropyl methyl cellulose. Through innovation of a material formula and innovation of a construction process, the problem that the grouting effect is poor due to the fact that a traditional grouting material cannot change the solidification time according to variable underground grouting scenes and requirements is solved; accurate grouting can be achieved under the conditions of different grouting depths, different crushing degrees, different diffusion radiuses, different mixing water temperatures, different coal and rock mass temperatures, different water inflow and the like.

The invention discloses a goaf filling material based on coal slime and a carbon sequestration method. The goaf filling material comprises the following steps: preparing a composite activator and a plurality of pretreated coal slime, steel slag, superfine slag powder and desulfurized gypsum raw materials; the preparation method comprises the following steps: mixing coal slime, steel slag, superfine slag powder, desulfurized gypsum raw materials and a composite activator in proportion, putting into a closed reaction kettle, and carrying out dry mixing and sufficient stirring; adding a proper amount of water into the dry-mixed raw materials according to a solid-to-liquid ratio of 7: 3, and stirring the water and the raw materials through a reaction kettle until the water and the raw materials are fully mixed to form a strong alkali mixture; filling CO2 gas into the reaction kettle, carrying out primary mineralization reaction, and stirring in the reaction kettle to obtain a paste filling material; conveying the paste filling material to a goaf through a pump body, and performing filling operation according to a preset filling process; and after the filled paste filling material is initially set, secondary mineralization reaction is carried out, supercritical CO2 gas is injected into the paste filling material through the pre-buried pipeline, residual alkaline substances in the paste filling material react, and a compact anti-seepage structure is formed.

The invention discloses a red mud-based composite material as well as a preparation method and application thereof, and belongs to the technical field of resource utilization. The red mud-based composite material is prepared from the following raw materials in percentage by mass: 4 to 12 percent of cement, 5 to 25 percent of gypsum and 63 to 91 percent of red mud. The cement and the gypsum are added into the red mud, so that the compaction characteristic, the unconfined compressive strength and the water stability of the red mud are stabilized, and the heavy metal leaching of the red mud-based composite material is effectively controlled.

The invention discloses a raw material uniformity mixing control method based on wet flue gas desulfurization gypsum slurry, which comprises the following steps: constructing a time sequence working condition data set by collecting process data such as feeding rate, slurry concentration, particle size distribution and stirring parameters, and extracting main dynamic characteristics of shearing and agglomeration based on an SINDy algorithm; the method comprises the following steps: establishing a state evolution model, inputting a current working condition into the model to generate a state evolution path, collecting shear strength and aggregation degree observation data at key nodes of the path, and identifying an implicit state and an estimation error of a system by adopting a horizon estimation algorithm and combining a historical process trajectory and a control constraint condition. When the prediction deviation exceeds the limit, model structure adjustment and parameter updating are triggered, regulation and control output quantity is generated based on the model deviation, a control instruction is output, dynamic optimization control over the slurry mixing uniformity is achieved, working condition changes can be dynamically adapted, and the slurry mixing uniformity and the process stability are improved.

The present application relates to the technical field of building construction, and particularly relates to a kind of assembled light partition wall mounting structure and mounting method, comprising assembled wall module, assembled wall module includes light partition wall, light partition wall is placed between roof and ground, further comprising hanging piece, light partition wall top is connected with roof through hanging piece;Between the top of light partition wall and roof, soundproof cotton is respectively arranged on both sides of hanging piece;The bottom of light partition wall is filled with sealing strip between ground, and both sides of assembled wall module are respectively covered with gypsum board.The present application simplifies light partition wall and can be quickly installed in place, simplifies the assembly process, effectively shortens the installation period, and each light partition wall is an independent module, so that the wall does not need to be damaged during disassembly and replacement, facilitating the replacement and recycling of light partition wall in the later stage.

The invention discloses a solid-waste-based grouting material for mine roof contact filling and a preparation method. The solid-waste-based grouting material comprises 30-44 parts of steel slag powder, 25-39 parts of fly ash, 8-15 parts of desulfurized gypsum, 10-24 parts of activated coal gangue powder and 13-18 parts of an alkali activator. The mass ratio of the alkali activator water glass to the sodium hydroxide is 1.5-2.5; the content of free calcium oxide f-CaO required by the steel slag powder is lt; the specific surface area is greater than or equal to 700m < 2 > / kg; the activated coal gangue powder is prepared by calcining coal gangue at 650-750 DEG C for 1-2 hours, removing organic matters and activated silicon-aluminum components, and grinding until the specific surface area is greater than or equal to 500m / kg. The fluidity of the obtained material is 260-310 mm, the 3d compressive strength is larger than or equal to 7.2 MPa, and the 28d shrinkage rate lt is achieved; the solid waste utilization rate is greater than or equal to 90%, and the cost is reduced by more than 35% compared with that of the traditional material. The material is used for mine filling roof contact, has the characteristics of good fluidity, rapid hardening, appropriate early strength, excellent volume stability, environmental friendliness and low cost, and has wide application prospects.

The invention relates to the technical field of mine filling, and particularly discloses a bleeding filling retaining wall structure and an ardealite backfilling method using the same, the bleeding filling retaining wall structure comprises a wall body arranged in a mining roadway of a filling mining method, the wall body is of an arch structure built by special-shaped bricks, and the special-shaped bricks are of an arch structure with one end large in size and the other end small in size. A plurality of pressure-bearing edges are constructed on the surface of the special-shaped brick, and a plurality of hollow structures are defined by the pressure-bearing edges. The arch protruding side of the wall arch structure faces the side of a goaf, arch feet of the wall arch structure are directly connected with rock masses on the two sides in a masonry mode, and the special-shaped bricks are formed by 3-8 mm melon pebbles and binding materials in an extrusion mode. The technical problems that in the prior art, a filling retaining wall is provided with a drainage structure in order to improve the drainage capacity, so that the whole structure of the retaining wall is damaged, structural weak points exist, and collapse is likely to happen at the drainage structure are solved.