461results about How to "Improve anti-seepage effect" patented technology

The invention discloses a tunnel connection channel construction method of a shield interval, which comprises the following steps: 1. an enclosed plain concrete continuous wall which is used as a water sealing curtain is arranged at the periphery of the connection channel ; 2. a mixing pile or grouting is adopted inside of the connection channel area to reinforce soil body; 3. excavating vertical well construction is carried out within the range of a reinforce area; 4. a subsurface excavation method is adopted to carry out excavation and lining construction for the connecting channel from both sides of the vertical well. 5. after the construction of the connecting channel interval is completed and a shield machine entirely passes through a reinforce body, a tube sheet positioned at the connecting channel portal is cut off, the portal waterstop and the portal structure of the connecting channel are constructed; the lining structure of the connecting channel positioned at the vertical well is also constructed and the vertical well is refilled, finally the connecting channel is completed; the stratum reinforce construction method of the connecting channel is high in efficiency and safe, can be promoted and applied to the construction of reinforcing stratum for changing the tool bits of the shield machine, thereby providing reliable guarantee for changing the tool bits of the shield machine.

The invention discloses a method for controlling leakage of a grouting treatment vertical type asphalt concrete core wall earth-rock dam. The method comprises the steps of first collecting, arranging and analyzing dam technical data, and drawing up a grouting range, grouting hole arrangement and grouting curtain body design indexes; carrying out slurry tests and on-site grouting tests; selecting a device according to slurry test results, manufacturing grouting slurry, performing segmentation and row drilling on an upstream transition layer at a dam crest, and sequentially drilling upstream row grouting holes, middle row grouting holes and downstream row grouting holes in the upstream transition layer from one side of an upstream rockfill material dam shell to an asphalt concrete core wall; and finally performing hole sealing treatment after quality inspection. The method has simplicity in arrangement; under the conditions that a reservoir cannot be emptied, the problem of the leakage of the vertical type asphalt concrete core wall earth-rock dam can be effectively solved, the reservoir can run normally, and dam body safety is guaranteed. Engineering project implementation treatment proves that the method is feasible, safe, reliable and good in leakage treatment effect.

The invention discloses a crack-resistant waterproof cement-based permeable composite repairing material and a method for preparing same. The crack-resistant waterproof cement-based permeable composite repairing material of the invention comprises the following components by the mass fraction: 20% to 40% of Portland cement clinker, 3% to 20% of fly ash, 2% to 10% of gypsum, 2% to 10% of high-alumina cement, 1% to 4% of sodium silicate, 0.1% to 1.5% of high-efficiency naphthalene-based water-reducing agent, 0.1% to 2.0% of sodium carbonate, 40% to 70% of shaping quartz sand, 0.1% to 3.0% of polypropylene staple fiber and 0.05% to 1.0% of sodium carboxymethyl cellulose. The high-performance material of the invention is free from toxicity and pollution, and further has the characteristics of solid cementation, good penetration depth, good waterproof, anti-permeability and crack-resistant effects and the like; and meanwhile, the invention has the advantages of low production cost, simple preparation process and construction method and wide applicable range.

The present invention belongs to a building brick made of fly ash, mortar and their production method. The raw material composition of brick includes (by wt%) fly ash 70-80, lime 7-13, gypsum 0-1.3, cement 0-5 and the rest is aggregate, and the raw material composition of mortar includes fly ash 70-80, lime 7-13, cement 0-5 and the rest is aggregate. Besides, said invention also provides the concrete steps of their production method.

The invention discloses a synchronous grouting material used for a tunnel and a preparation method thereof. The grouting material is the grout which is prepared by taking sediment grout as a main raw material, wherein the sediment grout comprises 30 to 65 percent of clay and fine sand totally and the weight ratio of soil to sand in the sediment grout is 0.1-0.18:1; and adding 80 to 120 kg of cement, 300 to 450 kg of coal ash, 200 to 500 kg of water or mud water and 3 to 10 kg of sodium carboxymethyl cellulose into per cubic meter of the sediment grout, wherein the grout density is between 1.85 and 2.05 g/cm<3> and the grout consistency is between 10.5 and 12 cm. In the preparation method, sediment and the mud water generated in a construction process are adopted as grouting materials, so that the sediment and the mud water can be changed into treasure from waste; and therefore, the preparation method has the characteristics of great reduction of the dosage of high-energy consumption cement, capability of working inside and outside tunnels, and convenient construction.

The invention discloses a water stop method for an upper-soft and lower-hard water-rich stratum foundation pit engineering retaining structure. The method includes the steps that firstly, a cast-in-situ bored pile is constructed; secondly, on the outer side of the cast-in-situ bored pile, a high-pressure jet grouting pile or a three-shaft stirring pile is constructed; thirdly, a hole is drilled in the center of the high-pressure jet grouting pile or the three-shaft stirring pile, and high-pressure jet grouting or sleeve valve pipe grouting is performed; fourthly, deep hole curtain grouting is performed; fifthly, a first-layer small guiding pit is excavated; sixthly, preliminary-stage supporting is performed on an upright excavation face of the first-layer small guiding pit; seventhly, core soil is reserved during excavation of a first-layer foundation pit; eighthly, a first-layer transverse steel purlin is arranged, and a steel cross brace is erected; and ninthly, when the pre-designed strength of the retaining structure is achieved and the monitored and measured result is accurate, next circulation is performed, and the fourth step, the fifth step, the sixth step, the seventh step and the eighth step are repeated till construction ends. The method is good in main water stop effect and good in flexibility. The technology is simple, the construction risk is small, influences on the environment are small, and adaptability to a complicated stratum is high.

The invention provides a seepage-proof thermal insulation wall material containing a fibrous material, which belongs to the technical field of building materials. The wall material comprises, by weight, 10 to 20 parts of vegetable fiber, 2 to 3 parts of carbon fiber, 2 to 3 parts of glass fiber, 3 to 5 parts of carboxymethyl cellulose, 1 to 2 parts of potassium titanate whisker, 3 to 6 parts of aluminum sol, 3 to 4 parts of silica sol, 5 to 8 parts of diatomite, 2 to 3 parts of paraffin, 2 to 3 parts of stearic acid, 5 to 7 parts of montmorillonite, 3 to 6 parts of expanded perlite powder, 4 to 6 parts of talcum powder, 2 to 4 parts of a polystyrene particle, 4 to 6 parts of urea formaldehyde resin, 2 to 4 parts of epoxy resin, 3 to 6 parts of phenolic resin and 5 to 10 parts of fly ash. The thermal insulation wall material containing a fibrous material provided by the invention has a small coefficient of heat conductivity, about 0.1 W/m.k, and has good seepage-proof performance.

The invention discloses an impermeable material for a refuse landfill, which is prepared by stirring, paving and rolling a raw material. The thickness of the impermeable material for the refuse landfill is 30 to 50 centimeters, the compactness of the impermeable material for the refuse landfill is more than 90 percent, and the raw material consists of the following components by mass percentage: 60 to 80 percent of semi-rigid material, 3 to 20 percent of bentonite, and 10 to 20 percent of water. Compared with the prior art, the impermeable material for the refuse landfill has the advantages of good impermeable effect, strong anti-puncturing capability, low preparation energy consumption and cost, and simple and convenient construction.

The invention discloses a construction method of an anti-seepage wall of a hydropower station. The construction method comprises the steps that first-stage groove section construction and second-stage groove section construction are sequentially carried out on a wall base; first-stage groove sections and second-stage groove sections are arranged in a staggered manner; each groove section is divided into totally three single holes, namely, main holes in the two sides and an auxiliary hole in the middle, and in order to guarantee groove hole type construction, the main holes in the two sides of each groove section are firstly grabbed, and then the auxiliary hole in the middle of each groove section is grabbed; and after hole grabbing is completed, a concrete wall body is poured. Through the adoption of the method, construction difficulty can be reduced, the construction period can be shortened, and manpower and material resource waste can be avoided.

The present invention relates to a construction method by which grout curtains are combined with reinforced concrete cages. The construction of a grout curtain is carried out by an engineering driller and a grouter as the construction of drilled piles is carried out, a foundation ditch is dug layer by layer while the reinforced concrete cages are constructed, the soil body on the periphery of a cofferdam is concreted, stepped excavation and stepped shoring are carried out till the bottom of the foundation ditch, and after the construction of the drilled piles is finished, the construction of a bearing platform is carried out. The curtain formed by grouting is waterproof, the reinforced concrete cages are constructed while the bearing platform foundation ditch is dug, so the soil pressure, water pressure and unbalanced construction load generated by the excavation of the foundation ditch are resisted. The construction of the grout curtain can be carried out as the construction of drilled piles is carried out, the foundation ditch is dug layer by layer while the reinforced concrete cages are constructed, consequently, the construction period is effectively shortened and the construction equipment which is put into use is reduced. The construction by reinforced concrete caissons, steel cofferdams and steel plate piles is difficult, the present invention can easily resolve the problem, and meanwhile, according to the geological conditions, the construction of the bearing platform can apply non-bottom sealing construction, thus saving the cost.

This invention discloses one red earth bump level anti-transparency layer and discharge shaft connection method and its structure, which comprises the following steps: setting concaved tank on discharge shaft and ring edge in concaved tank; then processing level anti-transparency pad layer with top part align to ring edge; then paving compound geomembrane; then drilling concrete into concaved tank; finally processing anti-transparency protection layer.

The invention relates to a method for improving a single-layer oil tank into a double-layer oil tank. On the basis that the inner wall of the buried single-layer steel oil tank in service is derusted, an anti-corrosion reinforcing coating, a 3D through gap layer and a glass steel inner tank are sequentially manufactured, and the single-layer oil tank is quickly improved into the glass steel double-layer oil tank with a through gap layer space. The 3D through gap layer is communicated with a tank top monitoring well, and sealing performance of the inner tank and the steel outer tank in service can be monitored all day long. The inner surface of the glass steel inner tank is coated with an anti-static layer which makes direct contact with stored liquid, the anti-static layer is connected with an original steel storage tank, and the original steel single-layer storage tank is grounded so that electrostatic hazards can be avoided. The inner tank is made from a glass steel material formed by mixing resin and glass fiber. The oil tank improvement method has the advantages of being good in safety, high in strength, convenient to manufacture and the like, corrosion resistance of the oil tank is improved, the overhaul frequency is reduced, the service life is prolonged, and improvement cost is reduced.

The invention discloses a GCL vertical anti-seepage wall and a preparation method thereof. The GCL vertical anti-seepage wall comprises a vertical anti-seepage wall body, wherein a sodium-based geosynthetic clay liner is fixed at the outer side of the vertical anti-seepage wall body, and the sodium-based geosynthetic clay liner comprises a vertical anti-seepage structure and a top fixation structure. The anti-seepage wall disclosed by the invention has a low permeability coefficient, and is good in bonding with a soil mass, and high in anti-seepage effect.

The invention discloses a composite barrier for preventing horizontal diffusion and migration of underground water layer pollutants and application thereof. The composite barrier is formed by encapsulating expansion clay by a water-soluble polymer film. During the application, the composite barrier is placed into a vertical open groove with a watertight layer arranged at the groove bottom, the filling height of the composite barrier in the vertical open groove is not lower than the upper plane of the underground water layer, wall protecting slurry is removed, and then, soil is filled back into the vertical groove until the vertical groove is flatly filled. The composite barrier has the advantages that the construction is simple, the engineering manufacturing cost is low, the anti-seeping effect is good, and the like. The horizontal migration of pollutants in the underground water layer can be better prevented.

The invention discloses a rainwater collecting and processing device. The rainwater collecting and processing device comprises supports, a defouling tank body, a disinfecting tank, a pH-value adjusting tank and a clean water tank, wherein the defouling tank body is connected with a rain water collecting pipe network through a rainwater pipe, the defouling tank body, the disinfecting tank, the pH-value adjusting tank and the clean water tank are all mounted on the supports, and communicate with one another in sequence through a pipeline, a valve is mounted on the pipeline, an impermeable layer is arranged at the bottom of the defouling tank body, a drain outlet is formed in the outer wall of the defouling tank body, a filtering screen is fixedly arranged inside the defouling tank body and in a position below the drain outlet, a mounting plate is arranged on the outer wall, far away from the drain outlet, of the defouling tank body, a telescopic pole is mounted on the mounting plate, a defouling plate is arranged on the filtering screen, the output shaft of the telescopic pole penetrates through the defouling tank body to be connected with the defouling plate, mud and impurities in rainwater can be effectively removed, the rainwater pH-value is adjusted, and the structure is reasonable.

The invention discloses an underground impermeable membrane inserting connector and a construction method thereof. The underground impermeable membrane inserting connector comprises a connector body,one or more grouting grooves or one or more grouting rooms are formed in the connector body, an opening is formed in the side end of the connector body and runs through the grouting grooves, insertingparts are arranged in the grouting grooves and comprise linking segments and installing segments, the linking segments extend out of the connector body from the opening, and the installing segments are movably inserted into the lateral portion of the opening, then extend into impermeable membranes or permeating membranes through the opening, and are connected with the impermeable membranes or thepermeating membranes through the linking segments. The aim that the impermeable membranes are applied to underground anti-seepage treatment construction through inserting is realized, construction quality and efficiency are further improved, and possible pollution caused by construction is reduced.

The invention relates to a continuous wall forming machine of an underground cement soil impermeable wall. A machine chassis and a hydraulic support form a walking travel mechanism, a frame and an oblique adjusting rod are arranged on the machine chassis, the frame is adjusted to be in a perpendicular or oblique position through the oblique adjusting rod, and a vertical guide rod and a horizontal drive cylinder are arranged on the frame. A cutter drive mechanism and a cutter combination box are connected with a cutter combination chain and a cutter head, and move up and down along the vertical guide rod through a vertical drive cylinder. The cutter combination chain surrounding the two sides of the cutter combination box moves around a position between the cutter drive mechanism and the cutter head. Soil layers are cut and agitated by blades fixed on the cutter combination chain. A non-fence impermeable wall having excellent impermeable effect is really built through the machine, and the continuous impermeable wall has the advantages of uniform texture, accurate advance direction, better impermeable effect and simple technology. The continuous wall forming machine can be used for digging downwards, cutting soil layers and building the cement soil wall in one step.

The invention relates to an adjustable attached type breast cushion which is held between underclothes such as brassiere, and the like and breasts of breastfeeding mothers and can effectively absorb the overflowing or spraying latex of breastfeeding women. The foldable breast cushion is arranged on a plane circular main body formed by an absorbing body for absorbing latex, a ventilating waterproof material arranged at the outer side of the absorbing body, and a breast protecting and moisture absorbing material arranged on the inner layer of the absorbing body. The center of the circle is taken as reference, and N commissures are cut from the center of the circle to the circumference. The length of each commissure L is less than or equal to the radius R of the plane circular main body, the N commissures are folded inwards to be jogged, tape or glue is adopted to stick the abutted seam, and the adjustable attached type breast cushion is formed. The foldable breast cushion has the advantages that the breast cushion has good texture, has no seepage leak, and is good in anti-leaking property; and the size of the breast cushion can be adjusted by wearers when the breast cushion is used.

The invention belongs to the technical field of water control of mine shafts, and particularly relates to a grouting method of a waterproof curtain of burnt rock covering on a working surface to be mined of a coal mine so as to solve the problems existing in the prior art that slurry between grouting holes is difficult to sufficiently diffuse and overlap, the leakproof effect of a grouting curtainof the burnt rock is poor, and the water shutoff rate is not high. The technical scheme adopted by the invention lies in that the grouting method comprises the steps of (1) performing hole drilling arrangement on the curtain; (2) grouting inner-row curtain holes; and (3) grouting outer-row curtain holes.

The invention relates to a three-dimensional multilayer-hollow fiber-reinforced concrete blanket capable of achieving lap joint and belongs to the technical field of building materials. The three-dimensional multilayer-hollow fiber-reinforced concrete blanket comprises a three-dimensional hollow-multilayer fabric, a top layer packaging fabric and active dry powder concrete; one side edge or multiside edges of the three-dimensional hollow-multilayer fabric are manufactured into a U-shaped lap-joint part, and the three-dimensional hollow-multilayer fabric comprises a first layer, a second layerand a middle layer; the first layer forms a two-dimensional structure through warp and weft intertwining, and the second layer forms a three-dimensional multilayer structure through warp and weft intertwining; a plurality of grid holes are formed in the first layer, and a three-dimensional hollow structure is formed on the middle layer; vertical warps weave the first layer, the second layer and the middle layer into a three-dimensional integral structure; and the three-dimensional hollow structure is filled with the active dry powder concrete through the grid holes, and the top layer packaging fabric and a first layer package are composited into a whole. The three-dimensional multilayer-hollow fiber-reinforced concrete blanket is a composite concrete blanket which is of a reinforced structure and is high in integrality, reinforced, toughed, resistant to bending and cracking, convenient to use and capable of quickly achieving high-property and low-cost lap joint in the construction process.

The invention provides a closed isolation composition applied to the treatment of a gangue hill and an implementation method thereof, and belongs to the technical field of environmental treatment andmine ecological restoration. The closed isolation composition comprises inorganic substances, a polymer, fiber, an additive and water, the weight ratio of the inorganic substances is 20-75%, the weight ratio of the polymer is 0.2-5%, the weight ratio of the fiber is 0.05-5%, the weight ratio of the additive is 0.05-2%, and the weight ratio of the water is 20-75%; the above materials are mixed according to a certain ratio to prepare a mixed slurry, the slurry is sprayed on the surface of the gangue hill for sealing of the gangue hill and isolation from a vegetation area to completely eliminatethe hazard of the gangue hill, and the disturbance influence of vegetation on the gangue hill is eliminated. The closed isolation layer has the advantages of airtightness, seepage resistance, heat insulation, firmness and durability, the used materials are all environmentally friendly, the construction is simple, the efficiency is high, and the cost is low.

The invention discloses a nano material modified fluorocarbon stone stone waterproof coating. The coating includes the following raw material components: resin raw material consisting of vinylidene fluoride resin and acrylic resin, multi-layer graphene oxide, a silane coupling agent, dibutyltin dichloride and solvent oil. The hardness, wear resistance and permeability resistance of the nano material modified fluorocarbon stone stone waterproof coating can be greatly improved by two-dimensional nanomaterial technology on the premise of guaranteeing of the transmittance and glossiness of the stone waterproof coating, and the protection life and the protection effect of the stone waterproof coating are greatly improved.