35results about How to "With expansion" patented technology

The invention relates to an expansion and solidification type plugging agent which comprises the following components in parts by weight: 0.5-2 parts of a calcium sulphoaluminate expanding agent, 1-4 parts of polypropylene fibers, 0.1-1 part of a water adsorption expansion type polymer, 1-5 parts of super absorbent resin SAP, 2-6 parts of puffed starch, 2-6 parts of salt-resistant clay, 20-40 parts of calcium carbonate and 0.1-0.5 part of high viscosity polyanionic cellulose PAC-HV. The preparation method comprises the following steps: sequentially adding the components in parts by weight to a kneading machine by a conventional preparation method under normal temperature and pressure; uniformly mixing and stirring; and crushing to a particle product with the grain size of 0.01-0.5mm till being dried. The plugging agent provided by the invention has the characteristics of high expansion rate, viscous flow capacity, plugging capacity, strong salt-resistance, flowability, pumpability, good coagulability, simple process, safe and quick construction, long coagulability, wide source of raw materials, high plugging success rate and the like, and is widely applied to plugging processes of large pore paths, subterranean rivers and great Karst cave leakage strata in petroleum and geological drilling.

The invention discloses a flexible coal dust foam concrete and a method for preparing the same, and in particular relates to a concrete. The concrete comprises the following main components by weight percentage: 10 to 15 percent of cement; 35 to 65 percent of coal dust; 20 to 45 percent of medium coarse sand; 3 to 4.5 percent of water; 0.1 to 0.3 percent of waterproofing agent; and 1 to 1.5 percent of foaming agent. A mode for blocking the wall surface of a heading by using the concrete is a concrete spraying mode, or a concrete lining mode, or a concrete curtain grouting mode. The flexible coal dust foam concrete is prepared from local materials, makes full use of the coal dust accumulated in the heading by underground drilling to reduce the transportation and construction cost of a supporting material and improve the efficiency and the progress of coal mining excavation, and has small impoverishment effect on coal products; a structural body has excellent impermeability, good leakproofness and integrity; besides, the concrete can be widely used for blocking and preventing seepage for the wall surface of a gas displacement coal-bed methane gas tunnel in coal mines, and also can be applied to supporting surrounding rocks of complex rock stratums or other dynamic pressure tunnels with the characteristics of softness, expansion, rheological performance and the like.

The invention belongs to the field of gold tailing treatment, and particularly relates to a method for fully utilizing gold tailings. The method mainly comprises the following steps that multi-elementtailings are subjected to swirler grading, are further screened through a sand washer, are further graded by a grader, and are screened after being dried to obtain fine sand with different levels; meanwhile, an overflow part with smaller specific gravity graded by the grader is dehydrated and precipitated through a high-efficiency thickener, then layer-by-layer screening is carried out through amulti-stage desliming hopper, finally dehydrating is carried out on the most fine overflow part by using a dewatering sieve to obtain silicon micropowder which is excellent in performance and is widely applied; and a bottom flow which is precipitated by the high-efficiency thickener can be stored in an air-inflation type slurry storage tank, and is used for producing an aerated brick. According tothe method, the multi-element tailing treatment method is more refined, the gold tailings can be thoroughly utilized, no harmful gas is emitted to the environment, the method can be applied to different fields and occasions, maximum utilization of the tailings can be achieved, and the method is the most environment-friendly and most economical tailing treatment method.

The preparation method of naproxen sodium slow-releasing tablet preparation adopts macromolecular substance hydroxypropyl methyl cellulose (HPMC) as skeletal material, uses naproxen sodium as active component and adding a certain quantity of release speed regulating agent, and adopts a certain scientific preparation process. Said invented product can quickly produce action, its medicine effect is strong, action time is long and toxic side effect is less, and it is similar to Naprelan control product in internal and external properties. Its process is simple and cost is low.

The invention discloses a high-expansion-ratio ice cream without food additive and a preparation method thereof. The ice cream is prepared by mixing an emulsified liquid phase A and a solution phase B based on the weight ratio of 1 to (1-3); the emulsified liquid phase A is prepared from the following components in percentage by weight: 20 to 40% of fat, 0.40 to 1.40% of whey protein powder, and the balance of water; the solution phase B is prepared from the following components in percentage by weight: 14 to 21% of skim milk powder, 3 to 5% of soyabean protein powder, 20 to 32% of white granulated sugar, and the balance of water. The ice cream paste is prepared by the combination of double-phase method and high-pressure homogenizing, so that the potential risk caused by properly added additives can be avoided; the ice cream is natural and green; the production cost is greatly saved; in addition, the quality defect of the general preparation method without food additives for processing the ice cream can be obviously reduced; the ice cream is high in expansion ratio, good in taste, high in shape forming capability, and reasonable in nutrition arrangement; the contents of the components are similar to those of the components of the general ice cream paste; other natural materials such as fruits can be mixed as required.

The invention relates to a granular volume expansion profile control agent for oil recovery and a preparation, and the preparation comprises the following steps: uniformly mixing and stirring 25-40g of 30% bentonite water solution and 20-35g of 30% acrylamide water solution, further adding 0.2-0.5g of sodium sulfate, 0.7-1.2g of sodium sulfite and 3.0-6.0ml of 40% NaOH water solution, fully mixing, uniformly stirring, reacting for 15-30 minutes at room temperature, further rising temperature to 50 DEG C, standing for 3 hours at the constant temperature, and further performing drying, granulation, pulverization and screening, thereby preparing the granular volume expansion profile control agent for oil recovery. Polyacrylamide with low degree of hydrolysis is used as a raw material main agent, thereby having the characteristics of high gel strength, good toughness and effective expansion; and phenols and organic acid are selected as gel combination agents, thereby having the characteristics of stable gel combination, no gel breaking, no hydrolysis, salt resistance and biodegradation resistance. The granular volume expansion profile control agent for oil recovery adopts a formula system which combines the granular volume expansion profile control agent and a gel type profile control agent into a whole, thereby having the characteristics of having high volume expansion coefficient and long effective period, and being applicable to crack oil-bearing structures and pore oil-bearing structures.

The invention relates to an ice cream containing unsaturated fatty acid and beta-carotene, belonging to the field of nutritional health-card food, and aiming at solving the health problems caused by eating a great deal of saturated fatty acid and overcoming the quality detects of the ice cream which is made by taking unsaturated fatty acid oil as a raw material. A making method of the ice cream comprises the following steps of: making emulsified liquid A by solid fat, isolated soy protein powder, spent meal, starch sodium octenylsuccinate and deionized water; mixing the beta-carotene and fluid oil and dissolving; making emulsified liquid B by the mixture, spent meal, a sweetening agent and deionized water; respectively sterilizing, homogenizing and ageing the two phases; before congelation, premixing the emulsified liquid A in advance, and then mixing the emulsified liquid B with the premixed emulsified liquid A to obtain ice cream slurry, wherein the quantity of the emulsified liquid B is equal to that of the emulsified liquid A; and finally, carrying out extrusion congelation operation at low temperature. The ice cream prepared by the invention is good in mouthfeel and shape forming ability, and overcomes the quality defects of the ice cream which is made by taking unsaturated fatty acid oil as raw material; and the ideal texture properties and nutrition-allocated proportion can be obtained.

The invention discloses a preparation method of a shale inhibitor with a filtrate reduction property. The method comprises the following steps: (1) adding an inorganic base to an n-amine solution, and uniformly mixing and stirring the inorganic base and the n-amine solution, wherein n is an integer larger than 1, the dosage of the inorganic base is 0.05-3% of the mass of the n-amine, preferably 0.5-1%; (2) adding an etherifying agent to the mixed fluid of the step (1), carrying out a reaction under 60-100 DEG C for 6-10 hours, preferably under 80-100 DEG C for 8-10 hours, the molar ratio of the etherifying agent to the n-amine is larger than 1.0, preferably 2.0-4.0; (3) reducing the temperature to indoor temperature after the reaction in the step (2) is over, and regulating the pH value of the solution to the neutral value so as to obtain the shale inhibitor with the filtrate reduction property. The preparation method is simple in preparation process and low in cost, the prepared shale inhibitor has good performance of shale inhibition and good filtrate reduction property at the same time, requirements for the performances of the shale inhibitor and a filtrate reducer which are used for a drilling fluid can be satisfied at the same time, one agent integrates multiple functions, and therefore, the actual problems of hydration, dispersion and swelling of clay shales, the collapse of a borehole wall, and the like can be solved.

The invention relates to high-impermeability cement-based repair mortar with a crack self-sealing function and a preparation method, and is suitable for the technical field of building materials. The repair mortar is prepared from the following components in parts by mass: 100 parts of sulphoaluminate cement, 150 to 300 parts of quartz sand, 5 to 16 parts of super absorbent resin SAP, 2 to 9 parts of waterborne epoxy resin emulsion, 1.4 to 6.4 parts of curing agent, 0.5 to 1 part of water reducing agent, 0.1 to 0.3 part of defoaming agent and 20 to 35 parts of water. The super absorbent resin needs to be pretreated by adopting a high-concentration calcium salt solution before being used. The cement-based repairing mortar provided by the invention not only has a good bonding effect with matrix concrete, but also has a crack self-sealing function when underground water permeates, so that a good anti-permeability effect is achieved, and the repairing efficiency of underground engineering concrete under high-water-content geology can be effectively improved.

The invention discloses a finish coat material and a preparation method thereof. The finish coat material is prepared from the following components in parts by weight: 20-40 parts of hot melting resin, 10-30 parts of a silicone acrylic emulsion, 5-10 parts of an inorganic thickener, 5-15 parts of anti-crack fibers, 2-8 parts of a foaming agent, 3-10 parts of a polycarboxylic acid high performance water reducer, 5-15 parts of silica powder, 2-8 parts of an ultraviolet absorbent, 2-10 parts of a flame retardant, 1-4 parts of a defoamer, 3-12 parts of hydroxypropyl methyl cellulose, 2-8 parts of lignocellulose and 5-15 parts of kaolin. The preparation method disclosed by the invention is simple, low in cost and good in environment-friendly performance, has the advantages of good high-temperature resistance and weather resistance, and can prevent a cracking phenomenon.

The invention relates to the technical field of wicker plaiting crafts, and discloses a method for prolonging the service life of the wicker plaiting crafts. The method for prolonging the service life of the wicker plaiting crafts comprises the following steps that (1) a plaiting raw material that is salix integra is treated first, the condition that the position of salix integra epidermis connected with branches is not damaged is taken into account during the peeling process, the epidermis can be removed cleanly and harmlessly with alternated heating and cooling temperature, toughness of the salix integra can be improved at the same time, tissue damage caused by excessive force in plaiting is prevented, so that the service life of plaiting products is improved; (2) the wicker plaiting crafts after plaiting are wrapped with plastic film and are placed on a baking rack for baking, on the one hand, moisture in products can be slowly released, and bright color can be maintained, on the other hand, used fumigation materials have mildew-proof and insect-proof effects so that mildew and moth-eaten of the products can be prevented; and (3) the wicker plaiting crafts are sprayed with a setting agent, so that the shape of crafts can be stabilized, and loose, swelling and distortion caused by external force and temperature changing are prevented.

The invention discloses environment-friendly wood processing sawdust treatment equipment for forestry engineering and belongs to the technical field of wood processing equipment. The environment-friendly wood processing sawdust treatment equipment for forestry engineering comprises a sawdust machine body, wherein a first rotating shaft is rotationally connected onto a feeding port; an L-shaped frame is connected onto the first rotating shaft; a first conveying roller and a second conveying roller are rotationally arranged on the L-shaped frame; a mounting cavity is formed in the L-shaped frame; a first belt pulley and a second belt pulley are rotationally connected; a first driving part is arranged in the mounting cavity; a first swinging plate is connected onto the first rotating shaft; aconveying mechanism is arranged at the bottom of the feeding port; a driving shaft is rotationally connected into a driving roller; a second swinging plate matched with the first swinging plate is connected onto the driving shaft; a snail-shaped pattern is arranged on the driving shaft; an expansion belt pulley is slidably arranged on a positioning disc; a pattern groove is formed in the expansion belt pulley; and a second driving part is arranged at the bottom of the feeding port. According to the environment-friendly wood processing sawdust treatment equipment, the conveying rollers positioned at the top are utilized for adjusting the conveying speed and strength of a conveyor belt according to the diameter of wood, so that the wood can be crushed smoothly.

The invention discloses an expandable low-density cement paste and a preparation method thereof. The expandable low-density cement paste includes components in the following proportion: 60-90% of cement, 10-40% of composite lightening admixture and clean water with water-solid ratio of 0.70-1.1. The preparation method of the expandable low-density cement paste comprises the following steps of: a, primarily mixing dry ash: uniformly mixing the cement and the composite lightening admixture according to the proportion requirements to form mixed dry ash; b, carrying out secondary paste mixing: adding industrial fresh water into the dry ash material which is primarily mixed in the water-solid ratio of 0.70-1.1; mixing the water and the material to form a uniform cement paste. The expandable low-density cement paste provided by the invention has certain expandability, thereby having volume expansion under loss and pressure difference conditions. Through the expandability of the volume, the density of the paste is firstly reduced, and then flow friction of the annular space of a well wall is increased due to the expansion; and two functions have the effect of preventing loss and achieve and realize the aim of preventing loss.

The invention discloses a magnesium high-performance anti-cracking agent for concrete as well as a preparation method and application thereof. The magnesium high-performance anti-cracking agent is prepared from the following raw materials of: 50 to 63 weight percent of light calcined magnesia clinker, 21 to 34 weight percent of phosphorus slag, 5 to 10 weight percent of coal slag, 1 to 3 weight percent of quartz sand, 1 to 2 weight percent of early strength agent and 0.5 to 1.3 weight percent of novel hydration heat absorbent. The light calcined magnesia clinker is formed by calcining magnesite, an iron material and bauxite at high temperature. The preparation method of the novel hydration heat absorbent comprises the following steps of: mixing maleic anhydride and sodium thiocyanate in a molar ratio of (7-9): 1; adding water to form a solution; dropwise adding a sodium benzenesulfonate solution in a nitrogen atmosphere; heating to 55-65 DEG C, carrying out heat preservation reaction for 2 hours; and cooling and drying to obtain the novel hydration heat absorbent. The anti-cracking agent disclosed by the invention has the functions of compensating concrete shrinkage, enhancing the mechanical property of concrete and absorbing cement hydration heat, and fundamentally improves the anti-cracking performance of the concrete material.

The invention provides multi-purpose cake liquid, cakes, puff pastries and preparation methods thereof. The multi-purpose cake liquid is mainly prepared by mixing the following components: 63 to 84 percent of sugar / sugar alcohol by weight, 9 to 36 percent of plant oil by weight and 1 to 7 percent of an emulsifier by weight. The total sugar content of the multi-purpose cake liquid is 85 percent by weight or lower, and the total oil content is 35 percent by weight or lower; the sugar is selected from saccharose / maltose; the sugar alcohol is selected from maltitol / sorbitol. The multi-purpose cake liquid disclosed by the invention is milky liquid containing water, sugar and oil, has the functions of swelling and puffing, can be widely applied to preparation of desserts such as all types of cakes and puff pastries, is stable in form and high in dispersivity, and cannot generate deposition and the like when stored for a long time.

The invention relates to the technical field of cables for rail transit, in particular to a comprehensive water-blocking ultraviolet-proof power cable for rail transit. The power cable comprises a plurality of conductors, and a semi-conductive conductor shielding layer, an insulating layer, water-blocking yarns, a first wrapping layer, a metal shielding layer and a second wrapping layer are sequentially arranged at the outer sides of the conductors. The outer side of the second wrapping layer is provided with a water-blocking isolation layer, and the water-blocking isolation layer comprises aninner-layer double-sided aluminum-plastic composite belt and a polypropylene layer bonded with the aluminum-plastic composite belt. A water absorbing belt is arranged at the outer side of the water blocking isolation layer and is made of polyester non-woven fabric added with water absorption expansion powder, a plurality of pieces of water absorption test paper are wound on the outer side of thewater absorption band, and an outer sheath layer is extruded on the outer side of the water absorption band. The comprehensive water-blocking ultraviolet-proof power cable for rail transit is simple in structure and has the comprehensive water-blocking characteristic in the radial direction and the longitudinal direction of the cable, and is good in water-blocking effect and high in economical efficiency, and the maintenance personnel can easily observe the water immersion amount of the cable.

The invention discloses artificial mudstone and a method for sealing and blocking oil-gas well casing tube outer cross-flow by using the artificial mudstone. The artificial mudstone is formed by film coated resin under the conditions that the temperature is 45 to 150 DEG C, the pressure is 2 to 5 MPa, and the acting time is not shorter than 1 hour; the film coated resin comprises the following ingredients in percentage by weight: 30 to 50 percent of polyvinyl alcohol water-absorbent expanding resin, 10 to 20 percent of rosin resin, 10 to 20 percent of phenolic resin, 5 to 10 percent of urea resin, 2 to 5 percent of methenamine and 10 to 30 percent of nanometer calcium carbonate. The method for sealing and blocking the oil-gas well casing tube outer cross-flow by using the artificial mudstone comprises the following steps that: (1) the nanometer calcium carbonate and carrying fluid are injected, and non-permeability sealing and blocking is formed; (2) activated water is injected; and (3) the film coated resin and the carrying fluid are injected, and the artificial mudstone is formed. The artificial mudstone and the method provided by the invention have the advantages that the effect of fast sealing and blocking well shaft annuluses of the oil-gas well casing tube outer cross-flow at the horizontal sections of a horizontal well in one step is achieved; the artificial mudstone has a long sealing and plugging lasting period, and is applicable to the well repair operation after the hydrajet fracturing modification of the horizontal well in petroleum extraction; and the construction success ratio of the later-stage horizontal well water blocking process can be favorably improved.

The invention belongs to the field of gold tailing treatment, and particularly relates to a method for fully utilizing gold tailings. The method mainly comprises the following steps that multi-elementtailings are subjected to swirler grading, are further screened through a sand washer, are further graded by a grader, and are screened after being dried to obtain fine sand with different levels; meanwhile, an overflow part with smaller specific gravity graded by the grader is dehydrated and precipitated through a high-efficiency thickener, then layer-by-layer screening is carried out through amulti-stage desliming hopper, finally dehydrating is carried out on the most fine overflow part by using a dewatering sieve to obtain silicon micropowder which is excellent in performance and is widely applied; and a bottom flow which is precipitated by the high-efficiency thickener can be stored in an air-inflation type slurry storage tank, and is used for producing an aerated brick. According tothe method, the multi-element tailing treatment method is more refined, the gold tailings can be thoroughly utilized, no harmful gas is emitted to the environment, the method can be applied to different fields and occasions, maximum utilization of the tailings can be achieved, and the method is the most environment-friendly and most economical tailing treatment method.

The invention discloses an ice cream with high expansion rate without food additives and a preparation method thereof. The ice cream is formed by mixing emulsified liquid phase A and solution phase B according to a weight ratio of 1:1~3, wherein the emulsified liquid phase A is composed of 20% to 40% of fat, 0.40% to 1.40% of whey protein powder, and the balance It is composed of water, and the solution phase B is composed of 14-21% of skimmed milk powder, 3-5% of soybean protein powder, 20-32% of white granulated sugar, and the balance is water. The invention adopts a two-phase method combined with high-pressure homogenization to prepare ice cream slurry, avoids potential safety hazards caused by improper use of additives, is natural and green, greatly saves production costs, and significantly improves ice cream processing using conventional methods without adding food additives When there are quality defects, the product has high expansion rate, good taste and formability, and reasonable nutritional mix. The content of each component is similar to that in conventional ice cream slurry. Other natural main ingredients, such as fruits, can be freely matched.

The invention discloses a shield end wellhead surrounding building foundation reinforcement structure, comprising a pipeline inside a wellhead foundation, wherein a concrete pouring layer is fixed between the wellhead foundation and the pipeline and a stuffing layer made from extruded polystyrene boards is arranged between the concrete pouring layer and the pipeline. The structure has the advantages that expansion after pouring of the concrete pouring layer is prevented through the arrangement of a buffer layer; the inner wall of the wellhead foundation is protected by the concrete pouring layer so that the wellhead foundation is prevented from tilting or cracking; fixing structures and the pipeline are arranged to protect the concrete pouring layer to prevent the same from collapsing, thereby keeping the overall structure stable, protecting the wellhead foundation, and preventing the foundation from tilting or cracking to affect people's life and buildings.

The invention relates to an ice cream containing unsaturated fatty acid and beta-carotene, belonging to the field of nutritional health-card food, and aiming at solving the health problems caused by eating a great deal of saturated fatty acid and overcoming the quality detects of the ice cream which is made by taking unsaturated fatty acid oil as a raw material. A making method of the ice cream comprises the following steps of: making emulsified liquid A by solid fat, isolated soy protein powder, spent meal, starch sodium octenylsuccinate and deionized water; mixing the beta-carotene and fluid oil and dissolving; making emulsified liquid B by the mixture, spent meal, a sweetening agent and deionized water; respectively sterilizing, homogenizing and ageing the two phases; before congelation, premixing the emulsified liquid A in advance, and then mixing the emulsified liquid B with the premixed emulsified liquid A to obtain ice cream slurry, wherein the quantity of the emulsified liquid B is equal to that of the emulsified liquid A; and finally, carrying out extrusion congelation operation at low temperature. The ice cream prepared by the invention is good in mouthfeel and shape forming ability, and overcomes the quality defects of the ice cream which is made by taking unsaturated fatty acid oil as raw material; and the ideal texture properties and nutrition-allocated proportion can be obtained.

The invention provides a preparation device of a functional microbial inoculum for water treatment, which comprises a culture cabinet body, a culture chamber is located in a thermal insulation layer, the front side of the culture cabinet body is provided with a thermal insulation cabinet door, the top of the culture cabinet body is provided with a control device, and the thermal insulation cabinet door is in separable sealing connection with a lock catch on the culture cabinet body through a door lock mechanism. A push-pull frame, a convection device, a temperature measuring device and an electric heating device are mounted in the culture chamber; the plurality of push-pull frames are sequentially arranged from high to low and are mounted in a sliding manner through a sliding rail, and a plurality of culture containers are arranged on the push-pull frames; the convection device is arranged below the installation area of the push-pull frame, the multiple temperature measuring devices are arranged above and below the installation area of the push-pull frame, and the electric heating device is arranged above the convection device. The device not only facilitates the daily operation of workers, but also can ensure that the temperature is within the optimal range required by flora expanding culture, thereby improving the expanding culture effect of the functional microbial inoculum.

The invention relates to a metal bead gasket (11) comprising a sealing area (12) having at least one bead (9); having at least one recess (21) for receiving a support at least one support region (13) of a device (5), in particular a screw; and at least one intermediate region (14) connecting the sealing region (12) to the support region (13), wherein the intermediate region (14) is Configured to be more deformable and less stable perpendicular to the support direction (4) than the sealing area (12) and / or the support area (13).

The invention discloses a urethral dilator used for men. The urethral dilator comprises a handle and a sleeve, wherein the sleeve is fixed at the front end of the handle; a first passage and a second passage which are mutually communicated are arranged in the handle; a rotating switch is arranged on the second passage. The urethral dilator is structurally characterized by being also provided with a catheter; one end of the catheter is fixed in the handle through the sleeve; the other end of the catheter is provided with a ball bag; a ball bag passage and a urethral passage which are mutually independent are arranged inside the catheter; one end of the ball bag passage communicates with the second passage; the other end of the ball bag passage communicates with the inside of the ball bag; one end of the urethral passage communicates with the first passage; the other end of the urethral passage communicates with the outside. The urethral dilator has the advantages that the structure design is reasonable; the use is convenient; the effective dilation and flushing is realized; minimally invasive and non-injury effects are achieved.

The invention discloses an inner sunken chamfer hole type feed granulator ring die, which belongs to the field of granulator ring dies, and is provided with an inner sunken chamfer die hole, so that materials can form a mutual extrusion state after entering the inner sunken chamfer die hole, the inner sunken chamfer die hole is gradually filled with the materials densely, the materials are not easy to throw off, and the material shape is controlled to be attractive. Therefore, the granular material with higher density, strength and hardness is formed. In addition, when the coagulation force of the materials is insufficient, the liquid storage bag, the flexible liquid guide pipe and the liquid storage soft ball are used, so that the materials in an extrusion state in the inner sinking chamfering die hole synchronously and uniformly apply pressure to the flexible liquid guide pipe and the liquid storage soft ball, the liquid adhesive in the liquid storage soft ball overflows into the material and is formed in the inner sinking chamfering die hole along with the material, so that the formed granular material is uniformly mixed with the liquid adhesive, the coagulation force in the material is greatly improved, and the granular material is not easy to break and break in the later processing process.

The invention discloses a flexible pulverized coal foam concrete and a preparation method thereof, relating to concrete. The main components of this concrete include: (by weight percentage) cement, 10-15; coal powder, 35-65; medium coarse sand, 20-45; water, 3-4.5; , 1~1.5. The method of using the concrete to block the wall of the coal seam roadway is either a shotcrete method, a lining concrete method, or a concrete curtain grouting method. The invention obtains materials locally, makes full use of the pulverized coal accumulated in the roadway drilled underground, reduces the transportation and construction costs of supporting materials, improves the efficiency and progress of coal mine excavation, and has little impact on the dilution of coal products; the structure is impermeable Good performance, good sealing and integrity; can be widely used in gas displacement coalbed methane roadway wall sealing and anti-seepage in coal mines, and complex rock formations or other dynamic pressure roadways with characteristics of softness, expansion, rheology, etc. Surrounding rock support.

The invention discloses an anti-aging facing layer material and a preparation technology thereof. The anti-aging facing layer material is prepared from the following components in parts by weight: 25to 45 parts of heat-melting resin, 12 to 28 parts of modified phenolic resin, 8 to 14 parts of inorganic thickener, 10 to 20 parts of mineral fiber, 3 to 9 parts of foaming agent, 2 to 8 parts of organosilicone water repellent, 10 to 20 parts of diatom ooze, 1 to 6 parts of titanium dioxide, 3 to 12 parts of flame-retardant agent, 2 to 8 parts of defoaming agent, 4 to 14 parts of calcium and zincstabilizer, 3 to 9 parts of aluminum silicate, and 6 to 16 parts of kaolin. The anti-aging facing layer material has the advantages that the preparation method is simple, the cost is low, and the environment-friendly property is good; the anti-aging, high temperature-resistant and weather-resistant properties are good, and the cracking can be prevented.