46results about How to "Improve wind erosion resistance" patented technology

The invention provides a flexible slope protection method for a soft sandstone natural side slope. The method comprises the following steps of (1) slope surface early-stage cleaning; (2) net hanging; (3) micro lubricating system building; (4) spray coating; (5) plant planting and greening; (6) operation and maintenance. The method has the advantages that through a series of measures of the flexible slope protection method, a processed side slope surface layer soft sandstone composite body has the comprehensive performance such as excellent mechanical performance, ultraviolet degradation resistance performance, wind etching resistance performance, water etching resistance performance, gravity etching resistant performance, freeze thawing resistance, water preservation, heat insulation and fertilizer preservation, the soft sandstone can be fixed, meanwhile, the method is combined with plant-growing methods such as a seed spraying method, the vegetation recovery is promoted, and the water and soil maintaining effect is effectively improved. The flexible slope protection method is suitable for ecological control and restoration engineering of the soft sandstone natural side slope and is particularly suitable for soft sandstone regions with the serious water and soil loss.

The invention relates to a sand-fixing agent preparation method field and the environmental protection field, which essentially adopts seed emulsion polymerization technology to synthesize the butyl acrylate-modified polyvinyl acetate emulsion sand-fixing agent and is used for fixing the sand.

The invention discloses a dust suppressing agent prepared on the basis of microorganisms and a use method thereof. The microorganism dust suppressing agent is prepared by mixing a bacterium solution and a calcium-ion solution by proper matching ratio. The use method of the dust suppressing agent comprises the following steps: the dust suppressing agent is uniformly sprayed on the surfaces of raise dusts; according to the actual need, the used amount of the dust suppressing agent for treating the raise dusts with the stacking volume being 1m<3> is 300-400L, and the 1-3 treating times are carried out according to the effect need. The dust suppressing agent has the advantages that the dust suppressing effect is obvious, the evaporative resistance, the wind-erosion resistance and the durability are respectively and greatly superior to those of the sprinkling mode for suppressing dusts when in raise-dust treatment, the greenhouse gas CO2 is absorbed in the reaction process, no toxic and harmful substance is generated, and the environmental friendliness and the economy are good.

The invention provides novel sintering material ginger nut fly ash slurry for earthen site anchoring, which comprises sintering material ginger nut, fly ash and water at a mass ratio of 1:1:(0.8-1.2). An anchoring body formed by grouting the novel sintering material ginger nut fly ash slurry for earthen site anchoring, provided by the invention, has relatively high early strength and strong stability and durability, is highly compatible with the earthen site body, does not interfere in the original appearance of the earthen site body, and avoids the bad impact on physical health and cultural relic safety, thereby being an ideal material for earthen site anchoring grouting, which is suitable for anchoring the earthen site in which the compressive strength of the soil body is 2-3Mpa under the construction technologies such as slit ramming, sand-containing slit ramming, gravel soil ramming and the like.

The invention discloses a starch-grafted waterborne polyurethane sand fixing agent and a preparation method thereof. The sand fixing agent is a starch-grafted waterborne polyurethane dispersion liquid of which the viscosity is 20-500 mPa.s at the temperature of 25 DEG C, the solid content is 30-45 percent by weight, the pH value is 6-8, and the storage stability is higher than six months; and the Shore hardness of a filmed dispersion liquid is 35-45. The sand fixing agent is obtained by undergoing a polymerization reaction on polyether polyol, diisocyanate, dimethylolpropionic acid, a neutralizing agent, starch, a latent solvent and a catalyst for forming a performed polymer and adding into deionized water for emulsifying. The starch-grafted waterborne polyurethane sand fixing agent has the advantages of degradability, nontoxicity, non-flammability, use safety, environmental friendliness, high nutrition and the like, and can be widely applied in the fields of agriculture and forestry as an environmentally-friendly nutritional sand fixing agent.

The invention discloses a waterborne polyurethane sand-fixing agent and a preparation method thereof; the sand-fixing agent is inner crosslinking type waterborne polyurethane dispersion agent which contains neutralizer of kali salt of phosphoric acid and ammonium salt, wherein the solid content of the neutralizer is 30-45%, and the pH value of the neutralizer is 6-8. The preparation method comprises the following steps of: forming a prepolymer through the polymerization reaction of polyether polyol, diisocyanate, dihydromethyl propionic acid, the neutralizer, an inner crosslinking agent, a cosolvent and a catalytic agent, and then adding deionized water to the prepolymer for emulsification to obtain the sand-fixing agent. The waterborne polyurethane sand-fixing agent has the advantages ofwide suitable temperature range, non-toxicity, non-combustion, safety in use, free of environmental pollution and richness in nutrition and the like. As the environmental-friendly nutritional type sand-fixing agent, the waterborne polyurethane sand-fixing agent can be applied to the field of agriculture and forestry.

The invention discloses a chemical sand fixing agent application device and method. The application device comprises nozzles (1), a liquid distributing plate (2), a liquid conveying pipe (3), a liquid storage tank (4) and a load bearing vehicle (7), wherein a chemical sand fixing agent is stored in the liquid storage tank (4); the liquid distributing plate (2) is communicated with the liquid storage tank (4) through the liquid conveying pipe (3); the chemical sand fixing agent in the liquid storage tank (4) flows into the liquid distributing plate (2) through the liquid conveying pipe (3); the nozzles (1) are vertically and uniformly distributed at the bottom of the liquid distributing plate (2); the chemical sand fixing agent entering the liquid distributing plate (2) is divided into the nozzles (1), and is injected onto sand through the nozzles (1), so as to be applied onto the sand through point injection. According to the chemical sand fixing agent application device and method, the sand fixing effect can be improved, the effective utilization rate of the sand fixing agent is increased, the application amount of the sand fixing agent is reduced, the condition that a water-proof consolidated layer is formed on the surface of a sand bed can be effectively avoided, the adverse effects on soil infiltration performance are reduced, and resistance on seed germination is reduced, so that the recovery rate of desertification can be greatly improved.

The invention discloses a coal transportation dust suppressant prepared based on microorganisms and a use method thereof. The dust suppressant is composed of a concentrated bacterial solution and a calcium ion solution. The bacterium of the concentrated bacterial solution is Bacillus mucilaginosus and the concentration of the concentrated bacterial solution is 10<10>-10<11>cells / mL, the calcium ion solution is a soluble calcium salt solution and has a calcium ion concentration of 0.1mol / L-2mol / L, and the volume ratio of the Bacillus mucilaginosus concentrated bacterial solution to the soluble calcium salt solution is 1:10-1.5:10. The method includes: mixing the Bacillus mucilaginosus and the soluble calcium salt solution uniformly in proportion, and spraying the mixture to the upper surface of coal evenly. Treatment of coal with a surface area of 1m<2> needs 2.5-4L of the dust suppressant, and according to the transportation needed time, the calcium ion solution concentration can be increased to adapt to the dust suppression time. The microbial dust suppressant provided by the invention has obvious suppression effect on flying dust generated in the coal transportation process, and has good environmental friendliness and economical efficiency.

The invention discloses a side slope protection method for an arid desert area. The side slope protection method comprises the following steps of: 1) prefabricating reinforced concrete grids to form parallelogram lattice structures; 2) arranging the reinforced concrete grids on the foundation layer of a selected side slope, embedding the reinforced concrete grids into a soil body for certain depth, using long anchor bolts to closely connect intersections of the reinforced concrete grids and inserting the anchor bolts into the soil body for certain depth; 3) arranging supporting skeletons on two sides of the parallelogram grids at intervals of certain distance; 4) laying a top beam and a bottom beam through the entire structure at the tops and the bottoms of the grids; and 5) spraying organic and inorganic mixed sand stabilizing materials with certain thickness onto the foundation layer of the side slope in the grids. The side slope protection method for the arid desert area has the advantages that sand dunes can be effectively stabilized and prevented from moving forwards, the driving force resisting effect of the side slope is improved, the bonding strength and the water resistance are improved, the freeze-thaw resisting stability, the wind erosion resistance and the weather resistance are improved, and the goals of stabilizing the sand dunes and preventing sand damages are achieved.

The invention discloses a soft rock side slope soil ecological protection method. The soft rock side slope soil ecological protection method comprises the steps that soft rock is sprayed with a layerof curing agent, the curing agent penetrates into the soft rock to prevent the soft rock from weathering and disintegration, then slope surface cleaning and leveling are carried out, the anchor rod positions are determined according to a design drawing, and drilling construction and installation of anchor rods are carried out; iron gauzes are laid along the slope surface according to the trend ofthe slope surface, the iron gauzes are tightened, and the anchor rods are used for fixing after flat and smooth laying is carried out; a planting matrix and the curing agent are evenly mixed to be sprayed to the slope surface at three times, the first-time spraying thickness is 2 to 3 cm, and the total thickness obtained by spraying three times is 11 to 14 cm, and after spraying of the matrix is completed, nutrient mud mixed with grass seeds is evenly sprayed onto the matrix by a hydraulic hydroseeder; the anti-scour ability and the wind erosion resistance of a soil body are improved; and theadopted curing agent can interact with soil so that the growth and development of vegetation are facilitated, and replaced soil spraying can be carried out for ecological protection on the basis of soft rock slope solidifying.

The invention discloses a composite sand fixation model, and a preparation method and applications of same. In the method, fiber filaments are spray-spread on a field and a microbial-fixation solution is sprayed on the surface of the fiber filaments, so that the microbial-fixation solution is hardened on the surface layer of and inside sand; and with the fiber filaments, a rib reinforcing structure is formed. The structure overcomes the defects that a conventional microbial sand fixation method is high in brittleness of surface layer, is poor in durability and is liable to cause wind erosion, and the problems that a conventional geotechnical fiber mesh sand fixation method is high in cost and labor intensity consumption. When the fiber filaments are spray-spread, surface roughness of sand is improved and wind speed on ground surface is reduced, so that movement of sand is effectively inhibited or reduced and anti-wind erosion property is improved. Sand, which is reinforced by means of the composite sand fixation model, in a desert area is improved in bearing performance and tensile strength and compressive strength, wherein anti-deformation capability of soil body is improved and brittleness is weakened.

The invention relates to a soil structure stabilizer and a preparation method thereof, and belongs to the technical field of soil conditioning. The soil structure stabilizer comprises the following components in percentage by weight: 30%-50% of an adhesive, 30%-50% of a curing agent and 5%-30% of an ion exchanger. The soil structure stabilizer provided by the invention can change the soil structure of an earth-rock slope, improves the properties of soil mechanical strength, water stability, scouring resistance, wind erosion resistance and the like, and has little influence on the growth of vegetation.

The invention provides a chemical curing agent as well as a preparation method and application thereof and belongs to the field of curing agents. The chemical curing agent is prepared from a first component and a second component, wherein the first component is mainly prepared from water, polyvinyl alcohol, polyacrylamide and acrylate; the second component is a solution containing sodium silicate with the percentage concentration of 2 to 5 percent. The preparation method of the curing agent comprises the following steps: mixing the polyvinyl alcohol, the polyacrylamide and the acrylate with water, and carrying out heating reaction at the temperature of 60 to 80 DEG C for 30 to 120 minutes to obtain the first component; preparing the sodium silicate solution with the mass concentration of 2 to 5 percent, thus obtaining the second component. The chemical curing agent has bionic performance, i.e., the chemical curing agent can form chemical crust on the sand surface; the chemical crust is similar to biological crust, and can be used for long-acting immobilized governance on sand grains, so that the weather-proof capability and the water erosion resistance of desert are improved.

The invention relates to a dust suppressant for mineral powder and a preparation method of the dust suppressant. The dust suppressant is obtained by preparing a polymer hydrosol through a copolymerization technique by using an ionic monomer and a nonionic monomer as raw materials, and performing mixing on the polymer hydrosol and a silica sol. According to the dust suppressant provided by the invention, the polymer hydrosol has a low particle size and better bonding ability to the mineral powder; and the silica sol improves cohesive force of the organic polymer, and the shell layer formed by the silica sol has better weathering resistance.

The invention provides a novel structure of a coal injection pipe head. The castable of the front head of a coal injection pipe is thickened, clasp nails are added, and a reinforcing rib structure is added in the inner pipe at the rear head, so that the strength and the wind erosion resistance of the coal injection pipe are increased, and the service quantity and the maintenance frequency are reduced. The use value is high, and the abrasion resistance and impact resistance effects are obvious.

The invention discloses an environment-friendly flame-retardant composite material, which is prepared from the following raw materials in parts by weight: 30 to 50 parts of adsorption resin, 5 to 10 parts of flame-retardant filler, 1 to 3 parts of ammonium polyphosphate, 10 to 20 parts of carboxymethyl starch, 5 to 10 parts of nano cellulose, 60 to 80 parts of acrylic acid, 60 to 80 parts of dimethyl diallyl ammonium chloride, 0.5-1 part of N, N'-methylene bisacrylamide, 60 to 80 parts of glycerol, 130 to 150 parts of absolute ethanol, 1 to 3 parts of ammonium persulfate and 1 part of a coupling agent. The invention also discloses a prepration method of the environment-friendly flame-retardant composite material, and the environment-friendly flame-retardant composite material not only has a compact three-dimensional network structure, and is good in flame retardance and adsorption property, and due to high adhesion, high wettability and wind erosion resistance, the environment can be effectively protected and dust pollution can be effectively reduced when being used in the fields of dust and coal dust treatment.

The invention disclose a soft rock slope soil preventing curing agent which is prepared from the following raw materials: compound resin, chloroprene rubber, maize straws, polyacrylic acid, cement, polyvinyl amine, polyoxyethylene, polyvinyl acetate, polyasparaginic acid, ammonium sulfate and a curing auxiliary agent. The curing agent is good in adhesive property, curing property, flowing propertyand peaceability. Being in contact with a soil mass, high molecular chains diffuse, permeate and wind the surfaces of soil particles and inside of pores to from a netty membrane structure. Meanwhile,a lot of functional groups on the high molecular chains are combined with soil particles through action of chemical bonds, so that the water stability of the soil particles is improved, and meanwhile, the hydrophilic nature on the surfaces of the soil particles are changed to form an effective water repellent ability, so that the erosion resistibility and the weather-proof ability of the soil mass are improved. The curing agent can interact with the soil to bring the benefit of growth and development of vegetations, and can be sprayed and sowed in soil replacement for ecological protection based on curing of the soft rock slope.

The invention relates to the field of mine ecological restoration and environmental governance, in particular to a large tailing pond side slope heavy metal ecological restoration system and application. By arranging a slope restoration module and a constructed wetland restoration module and limiting the specific structures of the slope restoration module and the constructed wetland restoration module and the length relation between the slope restoration module and the constructed wetland restoration module, a tailing pond side slope and slope bottom extension area ecological restoration system is established. After the dam body side slope is safely reinforced and land is renovated, subsequent plant planting is facilitated; the bottom mud and soil of the constructed wetland restoration module is subjected to ecological remediation in a specific period, and a remediation agent is biochar prepared from plants. The ecological system function of the tailing pond side slope and the buffer area of the tailing pond side slope is improved while migration of heavy metal pollutants of the tailing pond side slope is inhibited, ecological resources are recycled, the remediation cost is saved,and the effects of ecological remediation and pollution treatment of the tailing pond are further improved.

The invention relates to a preparation method of a high-molecular chemical sand stabilization material with a continuous structure. The preparation method comprises the following steps: 1, preparing a calcium phosphate oligomer; 2, preparing a free radical initiation system; and 3, preparing the high-molecular sand stabilization material with a continuous structure. The mechanical property of the high-molecular chemical sand-fixing material is improved by weakening the interface repulsion between organic and inorganic materials, and the high-molecular chemical sand-fixing material is characterized in that (1) the mutual fusion of the organic material and the inorganic material is ensured through the cross-linking polymerization of unsaturated monomers / inorganic oligomers at the molecular level and the acting force between multiple molecules; (2) the internal structure of the sand stabilization material is continuous and uniform, and the sand stabilization material has higher mechanical property and wind erosion resistance; and (3) the calcium phosphate oligomer can provide nutrition supply for plant growth.

The invention provides a desert control method. The desert control method comprises the following steps of: after flattening a sand land in a desert area to be treated, taking earthworks with the height of less than or equal to 3m and forming a square-structure basin; constructing windproof dams around the square-structure basin; paving anti-curing layers on the surfaces of the windproof dams and the square-structure basin, wherein the anti-curing layer comprises an ash-mixed sand layer, a first modified soil layer, a paper material layer and a second modified soil layer; and after paving, spraying nutritive water on the anti-curing layers, wherein the ash-mixed sand layer comprises the following components in parts by weight: 1-12 parts of plant ash and 100 parts of aeolian sandy soil; the first modified soil layer and the second modified soil layer and the second modified soil layer comprise the following components in parts by weight: 2-8 parts of cement, 100 parts of aeolian sandy soil and 3.1-13.2 parts of plant ash; and planting green plants on the anti-curing layers sprayed with the nutritive water. The desert control method provided by the invention is simple in process and good in practicability, can realize large-scale engineered and mechanized construction and is wide in application range.

The invention relates to the technical field of sand-fixing soil-repairing agents, in particular to a wind erosion-resistant modified polyurethane sand-fixing soil-repairing agent and a preparation method. The sand-fixing soil-repairing agent is composed of a component A comprising diatomite modified lignin nitrate and a component B comprising a linear polyurethane pre-polymer. The component A isprepared by taking water and polyethylene glycol according to the weight percentage, adding polyethylene glycol into water, performing even stirring to obtain a lignin derivative solvent, dispersing diatomite into the lignin derivative solvent, adding lignin nitrate, and performing stirring at room temperature for 1-2 h. The component B is prepared by adding an oligomer diol into diisocyanate, performing even stirring and mixing, introducing an inert gas, and adding a hydrophilic chain extender and a non-hydrophilic chain extender for carrying out a reaction. When the sand-fixing soil-repairing agent is used, the two components A and B are thoroughly mixed and sprayed onto a flowing sand surface to carry out a reaction, and thus a polyurethane material for sand-fixing and repairing with high strength and high toughness is formed.

The invention discloses a binder for the surface of raw soil construction. The binder comprises components in the following proportions: water glass with a Baumé degree of 35-45 degrees: construction sand: a curing agent of 1 :2.3‑3.0:0.05‑0.22. The adhesive of the invention can firmly stick the reinforcing material on the surface of the raw soil wall, improve the seismic resistance of the raw soil structure, suppress the development of cracks in the wall during earthquakes, and improve the wind erosion resistance of the wall.

The invention aims to provide a construction method for a sand barrier with a narrow sand-fixing net, which belongs to the technical field of sand control engineering. In the control of desertification, grid sand barriers, sandbag sand barriers, and grass grid sand barriers have been widely used to fix the mobile desert. The above sand barriers have many shortcomings, and it is difficult to achieve convenient construction, low cost and sand fixation effect. it is good. According to the excellent wind erosion resistance function of the narrow sand-fixing net, a construction line with an interval of 40cm to 120cm is drawn on the desert, and the center line of the flattened narrow sand-fixing net overlaps and is spaced parallel to the construction line. Spread a narrow sand-fixing net at 10cm to 12cm, take the sand-fixing net inserter, and insert the narrow sand-fixing net on the desert along the construction line, so that the narrow sand-fixing net is inserted along the construction line, and the construction is narrow Sand-fixing nets and sand barriers achieve the purpose of convenient construction, low cost and good sand-fixing effect.

The invention aims to provide a method for constructing a sand-fixation net grid by inserting and embedding narrow strip-shaped sand-fixation nets at intervals, and belongs to the technical field of sand control engineering. In desertification control, net grid sand barriers, sandbag sand barriers and grass grid sand barriers are widely used for fixing drifting deserts, however, the barriers have various defects and cannot achieve convenient construction, low cost and good sand fixing effect easily. According to the method for constructing the sand-fixation net grid by inserting and embedding narrow strip-shaped sand-fixation nets at intervals, a plurality of construction lines which are spaced from one another by 40 cm-120 cm are scribed on a desert, the narrow strip-shaped sand-fixation nets with the lengths of 10 cm-12 cm and the widths of 20 cm-36 cm are sequentially inserted into the desert along the construction lines at the intervals of 10 cm-12 cm; narrow strip-shaped sand-fixation net sand ridges are constructed; and meanwhile, the narrow strip-shaped sand-fixation nets which are perpendicular to the center line between every two narrow strip-shaped sand-fixation net sand ridges are inserted and embedded in the center line every 1 m-2m, and thus the sand-fixation net grid is formed. By adoption of the method for constructing the sand-fixation net grid by inserting and embedding the narrow strip-shaped sand-fixation nets at intervals, the purposes of convenient construction for engineering sand fixation, low cost and good sand-fixation effect are achieved.

The invention discloses a high-efficiency high-energy light photoelectric conversion material and a manufacturing method thereof. The photoelectric conversion material comprises a glass cover plate, asolar cell with the upper surface tightly glued with the bottom of the glass cover plate by EVA, and an installation groove for fixing the glass cover plate and the solar cell, wherein the glass cover plate is double-layer glass, the lower layer glass is high-light dense glass with refractive index nd value of 1.80-1.81 made of lead oxide, silicon dioxide, sodium carbonate, potassium nitrate andstrontium oxide as raw materials, the upper layer glass is low-light dense glass with refractive index nd value of 1.50-1.53, and one side, which is not in contact with the high-light dense glass, ofthe low-light dense glass is in an eccentric convex lens structure; sound insulation cotton is fixed in the inner region, matched with the solar cell, of the installation groove, and a heat-conductingsilicone grease sealing structure is arranged in the outer region, matched with the glass cover plate and the solar cell, of the installation groove. The high-efficiency high-energy light photoelectric conversion material is suitable for areas with high light energy density, and has high energy conversion efficiency, heat resistance, cold resistance and weathering resistance.

The invention belongs to the technical field of soil restoration, and especially relates to a soil conditioner used for controlling soil phosphorus element loss, and a preparation method and applications thereof. The soil conditioner used for controlling soil phosphorus element loss comprises following raw materials: 80 to 100 parts of a porous carbon base, 30 to 50 parts of ferrous sulfate, 25 to40 parts of aluminum sulfate, 10 to 20 parts of polyacrylamide, and 45 to 60 parts of modified loofah sponge; the porous carbon base is prepared through immersion of peanut shell powder in a phosphoric acid solution, a hydrochloric acid solution, and a bicarbonate solution successively under oxygen-free conditions; the modified loofah sponge is prepared through loofah sponge oxidation pretreatment, and plasma treatment and microwave intermittent radiation treatment. The soil conditioner is excellent in phosphorus loss controlling effect, is capable of reducing discharge of soil phosphorus element into water body, increasing soil effective phosphorus, reducing fertilizer cost of farmers, and can be used for soil restoration of slope cropland.