271 results about "Geomembrane" patented technology

The invention provides a geomembrane on-line leakage detection system and detection method, and relates to the technical field of geomembrane detection, the system comprises a signal monitoring module used for arranging a sensing detection network under a geomembrane in an array, carrying out on-line monitoring, and determining a real-time leakage signal of the geomembrane; the sensing and positioning module is used for executing compressed sensing and positioning based on sparse reconstruction according to a plurality of leakage points corresponding to the plurality of leakage signals, and identifying a source sensing matrix; and the leakage early warning module is used for carrying out leakage point early warning based on the source sensing matrix and carrying out leaked area early warning based on the plurality of leakage signals. The technical problems that in the prior art, geomembrane leakage is difficult to accurately recognize and position, response is not timely, and the anti-seepage safety and the management efficiency are reduced are solved. The technical effects of accurately positioning and early warning the leakage points in real time, effectively improving the sensitivity and response speed of geomembrane leakage detection, and improving the anti-seepage safety and management efficiency are achieved.

The invention discloses a refuse landfill geomembrane leakage detection method and system, and relates to the technical field of leakage detection.The method comprises the steps that a plurality of electrodes are arranged on the basis of the upper portion and the lower portion of a refuse landfill geomembrane, and a membrane upper electrode array and a membrane lower electrode array are constructed; constructing a detection electric field to obtain multiple groups of induction signal data; setting a reference signal, and identifying an abnormal sensing signal according to an analysis result; and mapping the abnormal sensing signal to the under-membrane electrode array according to abnormal data characteristics for positioning, determining electrode position information, and obtaining a leakage detection result. The technical problems that in the prior art, the positioning precision of the leakage point of the geomembrane of the refuse landfill is low, the leakage scale is difficult to evaluate, and the anti-seepage performance is not monitored in time are solved, and the technical effects that accurate positioning and scale evaluation of the leakage point of the geomembrane of the refuse landfill are achieved, and effective monitoring of the anti-seepage performance of the geomembrane is guaranteed are achieved.

The invention provides a special geomembrane for a pumped storage power station and a preparation method of the special geomembrane, and relates to the technical field of geomembrane materials. The special geomembrane for the pumped storage power station comprises an outer layer, a middle layer and an inner layer which are sequentially connected, the outer layer is prepared from the following raw materials: 55 to 65 percent of MDPE, 33 to 40 percent of HDPE, 1 to 5 percent of antioxidant master batch and 1 to 7 percent of double-resistant color master batch; the middle layer is prepared from the following raw materials: 15 to 25 percent of HDPE (High-Density Polyethylene), 35 to 45 percent of LLDPE (Linear Low Density Polyethylene), 25 to 35 percent of POE (Polyolefin Elastomer), 1 to 5 percent of antioxidant master batch and 3 to 7 percent of double-resistant color master batch; the inner layer is prepared from the following raw materials: 35 to 45 percent of MDPE, 40 to 50 percent of LLDPE, 8 to 12 percent of POE, 1 to 5 percent of antioxidant master batch and 3 to 7 percent of double-resistant color master batch. The strength, the fatigue resistance and the aging resistance are balanced on the whole, so that the long-term operation requirement of the pumped storage power station is met.

The utility model discloses a kind of TPO geomembrane seepage prevention detection test devices, specifically related to seepage prevention test technical field, including test shell, the outer wall of test shell is equipped with positioning counterweight sealing assembly, positioning counterweight sealing assembly includes: sealing strip, fixedly connected in the lower surface of counterweight frame, sealing strip is used to contact TPO geomembrane surface and adhere to seal;Multiple guide columns, all fixedly connected in the upper surface of counterweight frame, the top of each guide column is fixedly connected with guide end.The utility model uses positioning counterweight sealing assembly, counterweight cover is guided and inserted on the outer wall of guide column along guide end, multiple counterweight cover realize large-area counterweight extrusion to the upper surface of counterweight frame, so that sealing strip and TPO geomembrane surface realize quick contact seal, quickly realize multi-point synchronous counterweight sealing, sealing seepage prevention detection test processing is more efficient.

The utility model belongs to the technical field of geomembrane laying accessories, and particularly relates to a geomembrane joint fastening device. The utility model comprises a slot strip, wherein one side of the slot strip is provided with a slot; one side of the inserting strip is provided with an inserting head, and the inserting head is inserted into the inserting groove; the top face and the bottom face of the connecting plug are each provided with at least one elastic clamping hook, and elastic clamping grooves matched with the elastic clamping hooks are formed in the inserting groove. The utility model is used for solving the technical problems in the prior art that the geomembrane needs to be cleaned in advance and a certain construction environment is needed in the lap welding process of the geomembrane seam, so that engineering delay is caused.

The invention relates to the technical field of slope supporting construction of constructional engineering, and particularly discloses a redundant and safe reinforced soil structure and a construction method. Reinforced soil is of a multi-step structure and is constructed on a weathered rock foundation; the reinforced soil sequentially comprises a plain concrete foundation, multiple layers of integral steel-plastic geogrids, a graded broken stone drainage layer, a clay water-resisting layer, a waterproof geomembrane, a concrete sealing bottom and plain filling soil from bottom to top, and reinforced concrete panels are poured on the outer sides of the integral steel-plastic geogrids. A reinforced concrete foundation is arranged at the bottom of the reinforced concrete face plate, a cement soil cushion layer is laid at the bottom of the reinforced concrete face plate, drainage holes and pre-embedded steel tie bars are arranged in the reinforced concrete face plate, the pre-embedded steel tie bars and the whole steel-plastic geogrids are bundled up, and a gravel inverted filter bag is arranged in each layer of steel-plastic geogrids. The clay water-resisting layer and the gravel drainage layer are laid to achieve redundant safe water prevention and drainage, the construction period is controllable, and the manufacturing cost is relatively low.

This invention discloses a method for fixing a seepage-proof transition section on an irregular rock slope in a mine landfill. A seepage-proof cementitious composite sprayed material is wet-sprayed onto the irregular rock slope (1-2), forming a seepage-proof cementitious composite sprayed material layer (2) on the surface of the seepage-proof transition section. A seepage-proof geomembrane (3) is laid from the regular rock slope (1-1), and then rubber pads (7) and thin steel plates (6) are laid on the geomembrane (3) from the inside out. Hollow grouting anchors (4) are self-drilled through the holes in the thin steel plates (6) and rubber pads (7), and the edges are trimmed with a seepage-proof sealing agent (8). This invention is applied to the reinforcement of seepage-proof transition sections on irregular rock slopes in mine landfills, overcoming the problem of easy damage during the fixing process of seepage-proof transition sections on irregular rock slopes, eliminating potential hazards, and improving the safety and reliability of the seepage-proof system. It not only has good economic benefits but also significant safety and environmental benefits.

This invention discloses a vertical geomembrane laying device and method for landfills. The landfill has an underground trench, including a hanging frame and a geomembrane. The hanging frame is configured to move up and down along the underground trench. The geomembrane is laid on one side of the hanging frame, and interlocking structures are provided on both longitudinal sides of the geomembrane. Two sets of counterweight supports are respectively located at the longitudinal ends of the geomembrane. A detachable fixing component is constructed to connect the hanging frame and the counterweight supports to temporarily fix the geomembrane to the hanging frame. When the geomembrane is lowered, the interlocking structures are interlocked with the interlocking structures of adjacent geomembranes. After the geomembrane is lowered into place, the detachable fixing component can be released to separate the geomembrane from the hanging frame. The two sets of counterweight supports apply longitudinal tension to the geomembrane to keep it in a vertically tensioned state. This invention solves the technical problems of existing geomembranes being easily scratched by sharp objects during the lowering process and the insufficient integrity of the geomembrane after laying.

This utility model provides a clamp for horizontal tensioning of geomembranes in a laboratory, and the device relates to the field of hydraulic engineering technology. The clamp includes an upper clamping plate, a lower clamping plate, and a sliding groove; the upper clamping plate includes an upper plate and a protrusion; the upper surface of the lower clamping plate has a groove, and rollers are fixed to the lower surface, with several pressure devices fixed to the edge; the sliding groove provides a sliding track for the rollers on the lower surface of the lower clamping plate. This utility model can effectively solve problems such as unstable clamping of smooth geomembranes, stress concentration due to clamping effect, and the influence of clamp gravity effect on the horizontal tensile force data of the geomembrane.

The invention provides a high-density polyethylene composite geomembrane and a production process thereof, and the high-density polyethylene composite geomembrane comprises a cast film and geotechnical cloth. The cast film is prepared from the following raw materials: 52 to 68 parts of high-density polyethylene, 6 to 12 parts of modified metallocene polyolefin-graphene compound, 4 to 9 parts of modified polyolefin-ethylene-vinyl alcohol master batch, 5 to 10 parts of alpha-olefin ethylene copolymer, 3 to 7 parts of vinyl elastomer, 1 to 3 parts of polytetrafluoroethylene micro powder, 0.1 to 0.3 part of antioxidant, 0.2 to 0.5 part of ultraviolet stabilizer and 0.1 to 0.3 part of lubricant. And 1.5-3 parts of an ultraviolet screening agent. The composite geomembrane obtained by the invention has the advantages of high strength, high toughness, high impermeability, excellent pollution resistance, excellent weather resistance, high puncture resistance, firm membrane-cloth combination, good thickness uniformity and the like.

The utility model relates to the technical field of hydraulic engineering, in particular to an anti-seepage hydraulic engineering dam which comprises a concrete top plate and a concrete bottom plate, an upper tooth wall is fixedly connected to the upper end of the concrete top plate, and a plurality of upper tooth grooves are formed in the upper end of the upper tooth wall. A filtering assembly is fixedly connected between the concrete top plate and the concrete bottom plate, and the rear end of the filtering assembly is fixedly connected with a protection assembly. According to the anti-seepage water conservancy project dam, double anti-seepage barriers are formed through the composite structure of the inclined anti-seepage wall and the two-cloth-one-membrane anti-seepage geomembrane, the inclined anti-seepage wall can guide water flow to be dispersed along the slope surface, seepage pressure is reduced, and the two-cloth-one-membrane anti-seepage geomembrane can be used for preventing the water flow from entering the water conservancy project dam through the isolation and drainage performance of fabric and the low permeability of membrane materials. A water seepage path is effectively blocked, a fixing frame and a separation net are matched, the geomembrane is protected against damage, impurities can be intercepted, and the dam anti-seepage efficiency is greatly improved.

The frost heaving prevention protection channel for the cold region comprises second geotechnical cloth which is evenly laid on the surface of the channel in an attached mode, a layer of first geomembrane is evenly laid on the upper surface of the second geotechnical cloth, and first geotechnical cloth is evenly laid on the upper surface of the first geomembrane. Protective frames are uniformly attached to the upper surface of the first geotechnical cloth, polyurethane protective layers are arranged on the upper surfaces of the protective frames, and frost heaving resistance layers are embedded in the protective frames; according to the technical scheme, the multiple layers of geotechnical cloth are arranged, the geotechnical membranes are arranged between the geotechnical cloth, the geotechnical cloth and the geotechnical membranes form an inverted filter layer and an anti-seepage layer, the frost heaving problem of the channel slope protection under the negative temperature effect is reduced, workers can adjust the number of the geotechnical cloth and the number of the geotechnical membranes according to the requirements of the workers, and the working efficiency is improved. And the frost heaving prevention capability is further adjusted.

The utility model belongs to the technical field of building engineering, specifically discloses a heavy nonferrous metal smelting engineering existing pool anticorrosive and anti -infiltration structure. The reinforced concrete bottom plate and lateral wall of structure are closed into pool, the surface of reinforced concrete bottom plate is equipped with waterproof coating, geotextile I, high density polyethylene geomembrane, geotextile II, fine stone concrete layer, epoxy glass steel isolation layer and anticorrosive surface layer in proper order, the surface of reinforced concrete lateral wall is equipped with waterproof coating, geotextile I, high density polyethylene geomembrane, geotextile II, polymer cement mortar layer, epoxy glass steel isolation layer and anticorrosive surface layer in proper order, the layer of aforementioned same name of reinforced concrete bottom plate and lateral wall surface, geotextile and geomembrane correspond to head -tail link, and fine stone concrete layer and polymer cement mortar layer correspond to head -tail link. The utility model has the characteristics of simple structure, convenient construction, good anticorrosive and anti -infiltration performance and low cost.

The utility model relates to a geomembrane production laminating device which comprises a geomembrane base material, a conveying roller, a conveying base, a laminating assembly and a spraying assembly, and a geomembrane enters a composite die after passing through the laminating assembly and the spraying assembly; the film covering assembly is fixedly installed on the conveying base, at least one set of protective films are installed on the film covering assembly, and the protective films are located on the outer portions of the edges of one side or / and the two sides of the geomembrane base material respectively; the spraying assemblies are located outside the edges of the two sides of the geomembrane, each spraying assembly comprises a spraying pipe and a spraying head, and the spraying heads are arranged towards a protective membrane of a geomembrane base material; the geomembrane laminating device is reasonable in structural design, protective membranes can be laid on the surface of a geomembrane base material in the geomembrane base material production process by adding the laminating assembly and the spraying assembly, meanwhile, the protective membranes are prevented from being bonded together in the compounding process in a water spraying mode, and therefore a geomembrane with the protective membranes or a composite geomembrane can be machined and formed.

The invention discloses a cellulose-based radiation refrigeration mulching film and a preparation method thereof.The refrigeration mulching film comprises a cellulose matrix and radiation refrigeration nano-particles mixed in the cellulose matrix, and the mass of the radiation refrigeration nano-particles accounts for 10%-60% of the total mass of the cellulose matrix and the radiation refrigeration nano-particles; the radiation refrigeration nano-particles are composed of hexagonal boron nitride and inorganic oxide particles, and the mass ratio of the hexagonal boron nitride to the inorganic oxide particles is (1-3): 1. The preparation method comprises the following steps: mixing and dispersing the cellulose matrix and the radiation refrigeration nano-particles, and carrying out molding and hot pressing treatment to obtain the radiation refrigeration mulching film. The prepared radiation refrigeration mulching film has a good refrigeration effect and mechanical performance, can block solar radiation for a long time and reduce evaporation, and further has the advantage of being degradable.

The invention relates to the technical field of civil engineering equipment, and discloses a geomembrane welding device which comprises a supporting bottom plate, and outer plates are arranged on the two sides of the bottom of the supporting bottom plate; moving parts are arranged on the outer walls of the outer plates; power parts are arranged on the inner walls of the outer plates; a middle plate is arranged in the center of the bottom of the supporting bottom plate, side plates are arranged on the two sides, located on the inner side of the outer plate, of the middle plate, second rails are arranged at the bottoms of the side plates, a set of matched second sliding blocks are arranged on the second rails on the two sides, a moving plate is arranged between the bottoms of the two sets of second sliding blocks, and the two sides of the moving plate are mechanically linked with the power part through second clamping blocks; a supporting rod is inserted into the middle of the movable plate, a second electrostatic adsorption plate is arranged at the bottom of the supporting rod, a shaft is inserted into the upper portion of the supporting rod, a limiting pulley is arranged at one end of the shaft, and a hollow-out convex guide groove matched with the limiting pulley is formed in the middle plate. The method has the beneficial effect that the two geomembranes can be welded in an overlapped mode.

A three-dimensional anti-seepage structure under the sandy loam geological condition is of a three-dimensional closed structure formed by vertical anti-seepage walls, a horizontal anti-seepage layer and a drainage protection system in a cooperative mode, the drainage protection system is arranged in an anti-seepage space, the vertical anti-seepage walls are continuously arranged in the circumferential direction of the anti-seepage space, the vertical anti-seepage walls are stirring pile walls, and the horizontal anti-seepage layer is arranged on the horizontal anti-seepage layer. The horizontal anti-seepage layer is laid at the bottom of the anti-seepage space, a strong permeable stratum is arranged below the horizontal anti-seepage layer, the horizontal anti-seepage layer comprises a composite geomembrane, the composite geomembrane covers the upper portion of the strong permeable stratum in the anti-seepage space, and the drainage protection system comprises a soft longitudinal water collecting concealed pipe and a transverse communicating pipe which are arranged below the composite geomembrane. In conclusion, the anti-seepage device has the advantages that the anti-seepage efficiency is high, the capacity of adapting to differential settlement of a sandy loam foundation is high, pressure is effectively guided, drained and released, the underground water uplift pressure uplift damage risk is reduced, and the stability is high.

This application discloses an electrostatic dustproof geomembrane and its application, belonging to the field of geomembrane technology. The electrostatic dustproof geomembrane includes a geomembrane body and an electrostatic dustproof membrane. The electrostatic dustproof membrane covers the surface of the welded overlap area of ​​the geomembrane body, and the width of the welded overlap area is 8-15 cm. The electrostatic dustproof membrane is bonded to the welded surface of the geomembrane body primarily through electrostatic adsorption, supplemented by micro-heating. The electrostatic dustproof geomembrane provided by this application achieves long-term electrostatic adsorption through the electrostatic dustproof membrane, ensuring a tight bond with the welded surface of the geomembrane and easy peeling at high temperatures without leaving any residue. It effectively blocks dust accumulation in the welded overlap area, ensuring welding quality, preventing seepage failure, facilitating construction, and is suitable for various fields such as environmental protection seepage prevention, water conservancy and hydropower, significantly improving project durability and reducing rework costs.

The invention discloses a reverse vacuum preloading reinforcing system and a construction method. The system comprises a reverse vacuum preloading unit and a closed operation cavity unit. The reverse vacuum preloading unit comprises a prefabricated horizontal drainage body arranged at the bottom of the soft soil layer, a vacuum main pipe arranged in the prefabricated horizontal drainage body and led out upwards, a plurality of vertical drainage plates and a geotextile and geomembrane sealing layer covering the surface of a treatment area. The bottom end of each vertical drainage plate and the prefabricated horizontal drainage body are bound in advance to form a grid-shaped integrated drainage structure. The closed operation cavity unit is integrally sunk or constructed in a soil body, a plurality of vacuum pumps are arranged in the deep part in the closed operation cavity unit and connected with a vacuum main pipe through a quick connection structure, and a water suction pump is arranged at the top and used for timely draining accumulated water in the cavity. According to the system, negative pressure acts on a bottom drainage channel in a deep near field, the negative pressure transmission distance is shortened, on-way attenuation is reduced, and the consolidation efficiency and vacuum stability of deep saturated soft soil are improved through bottom short-path drainage.

The utility model relates to the technical field of geomembrane production, and discloses a stretching device for geomembrane production, which comprises a bottom plate and a geomembrane, the left side and the right side of the bottom of the bottom plate are respectively provided with a support plate, the top of the bottom plate is provided with a U-shaped frame, and the left side and the right side of the U-shaped frame are respectively provided with a mounting shaft with one end extending into the U-shaped frame. According to the stretching device for geomembrane production, a servo motor is started to drive a sliding block, two second electric telescopic rods and a pressing plate to move leftwards, and therefore extrusion stretching operation can be conducted on different positions of the top of a geomembrane; a double-shaft servo motor can be started to drive the two mounting shafts, the two U-shaped plates and the geomembrane to rotate by 180 degrees, so that the geomembrane is turned over, the upper side and the lower side of the geomembrane can be extruded and stretched, finally, the purpose of wide detection range is achieved, the stretching resistance of the geomembrane is comprehensively detected, and the detection efficiency is improved. And the accuracy of the detection result is improved.

The utility model discloses a welding device for geomembranes, which relates to the technical field of geomembrane welding and comprises a welding moving machine, a main controller is fixedly mounted at the top end of one side of the welding moving machine, and an electric power connecting box is fixedly mounted at the top end of one side of the welding moving machine. A welding controller is fixedly mounted on the surface of the bottom end of the side, close to the electric power connecting box, of the welding moving machine, and a control connecting wire is fixedly connected to the top end of one side of the welding controller. By setting position movement of a welding moving machine and the position of a control device, a main controller is used for directly controlling an electric power connecting box and a welding controller, starting operation of a welding mounting disc and spray welding operation between a welding device and a welding gun head are controlled, and welding operation is achieved at the connecting position of a geomembrane; welding comprehensiveness is improved through the welding devices at multiple positions, the control setting disc on the main controller can control the welding devices at different positions to be started, and meanwhile the welding use time can be directly controlled.

The invention discloses a geomembrane material service life prediction method and system, and relates to the technical field of geomembrane service life prediction.The geomembrane material service life prediction method comprises the steps that the real-time service state, historical environment exposure records and material formula and process parameter data of a geomembrane to be tested are obtained; carrying out fusion and alignment processing on the three types of multi-source heterogeneous data to generate a space-time associated material service panoramic data map; identifying and dividing three stages of stable, slow change and accelerated degradation of material performance degradation, and extracting typical damage evolution data fragments of each stage; constructing a causal inference network model associated with performance degradation and environmental load by using a mapping relationship between the fragment and a historical environmental exposure record; tracing a key environment load combination chain causing the current degradation stage; and generating a degradation path deduction instruction set according to the combined chain, and calculating to obtain a life prediction result. The method can improve the precision of life prediction, and meets the actual requirements of engineering.

The utility model provides a kind of geotechnical membrane heat sealing edge press, it is related to geotechnical construction equipment technical field, including heating device, the bottom of heating device is fixedly connected with support frame in both sides before and after.The knob drives transmission screw rod to rotate in the utility model, because transmission screw rod is connected with S type support thread, so transmission screw rod will drive sliding baffle to slide in connecting slide, to this can accurately control the distance of geotechnical membrane and be inserted in connecting slide, simultaneously, rotating handle one makes threaded sleeve column rotate, threaded sleeve column is connected with threaded column thread, to promote threaded column drive push plate and limit wheel movement, make geotechnical membrane and the surface of double-sided heating plate closely adhere, so it can be according to the splicing demand of different geotechnical membrane, accurately adjust the position of geotechnical membrane between adhesion, ensure that splicing position is accurate, effectively improve heat sealing quality, avoid the influence of splicing deviation to anti-seepage effect.

The utility model relates to the technical field of wading structure cofferdams, in particular to a double-row steel pipe pile cofferdam accurately positioned through guide frames, which comprises transverse cofferdams, longitudinal cofferdams, outer guide frames, steel pipe pile groups and inner guide frames. The outer guide frames making contact with the transverse cofferdam and the longitudinal cofferdam are arranged on the inner sides and the outer sides of the transverse cofferdam and the longitudinal cofferdam. Inner guide frames in contact with the steel pipe pile group are arranged on the inner side and the outer side of the steel pipe pile group; water-proof geomembrane is arranged on the inner sides of the transverse cofferdams and the longitudinal cofferdams, anti-filtering geotechnical cloth is arranged on the outer sides of the steel pipe pile sets, and a cavity used for being filled with clay is formed between the anti-filtering geotechnical cloth and the water-proof geomembrane. The cofferdam, the waterproof geomembrane and the waterproof clay can be formed for water stopping, the waterproof quality is guaranteed, the water stopping effect is remarkable, the technology is simple, the number of needed devices is small, the labor and formwork turnover cost is low, and the construction accuracy and efficiency are greatly improved.

The invention discloses a bridge pile karst cave section semi-flexible sleeve wrapping structure and a construction method, and belongs to the technical field of bridge pile construction.The bridge pile karst cave section semi-flexible sleeve wrapping structure comprises a steel reinforcement cage, a steel reinforcement support lantern ring is arranged on the outer side of the steel reinforcement cage, a geomembrane is arranged on the outer side of the steel reinforcement support lantern ring, and a concrete protection layer is arranged between the steel reinforcement cage and the geomembrane; the mounting mode of the geomembrane comprises a local mounting mode and a full-wrapping mounting mode. According to the bridge pile karst cave section semi-flexible sleeve wrapping structure and the construction method, the restraint strap is arranged to prevent the geomembrane from being broken due to excessive deformation, excessive external expansion can be avoided, loss of cast-in-place pile slurry is reduced, materials are saved, the bearing capacity of a pile foundation is improved, the construction efficiency of the pile foundation is improved, the reinforcement cage provides restraining force for concrete, and the construction efficiency of the pile foundation is improved. Concrete is prevented from puncturing the geomembrane, the geomembrane can be supported, and the situation that the size of the geomembrane on the outer side is expanded into a pile body due to collapse of the hole wall is prevented.

The utility model relates to the field of geomembrane processing equipment, in particular to a device for reducing membrane surface scratches and bright lines of a blow-molded geomembrane, which comprises a protective cover, the protective cover comprises a flexible cover body and connecting ropes arranged on two sides of the cover body, and one end of each connecting rope extends to the outer side of the cover body to form a traction section; the upper rotating roller can be mounted at the upper end of the herringbone plate, and the upper rotating roller can wind or release the traction section of the connecting rope; and the lower rotating roller can be mounted at the lower end of the herringbone plate, and the lower rotating roller can wind or release the protective cover. Through the arrangement of the protective cover, the upper rotating roller and the lower rotating roller, the existing problems are effectively solved.

The present disclosure pertains to recyclable multilayered polymeric structures comprising a number N of layers. Said recyclable multilayered polymeric structures comprise an outer surface layer N1, an inner surface layer N2, and optionally one or more layers between N1 and N2. Said recyclable multilayered polymeric structures comprise at least two different layers. The outer surface layer N1 is a barrier layer comprising a first polymer P1, P1 is polyethylene-based polymer with an ethylene content of at least about 50 mol% functionalized with polar groups and having an oxygen transmission rate (OTR) below 30 cc•20µm / m2•atm•day; a melting temperature above 160°C; a moisture resistance characterized by a water vapor transmission rate (WVTR) of less than 2 g•mm / m2•atm•day; and a density below 1.10 g / cm3. Said recyclable multilayered polymeric structures are for use in packaging applications, such as food packaging, building liners, geomembranes, pipes or containers for liquids.

The invention relates to the technical field of water conservancy and hydropower and geotechnical engineering, and particularly discloses a silt solidification silt dam structure based on composite reinforcement and a damming method.The silt dam structure comprises a silt dam body formed by artificial aggregate layered filling formed by solidified silt crushing and screening; the geomembrane, the geogrid, the geobag, the ecological bag and the inverted filter drainage layer are arranged in a composite mode. The damming method comprises the steps that reservoir dredged sludge and an industrial solid waste curing agent are mixed, cured, crushed and screened into artificial aggregate; artificial aggregates are filled in a layered mode, geogrids are laid synchronously, the geogrids are used for reversely wrapping and fixing the soil bags of the downstream slope, and meanwhile ecological bags are laid; and finally, geomembranes are laid to complete seepage prevention and slope protection. According to the dam body, efficient resource utilization of desilting silt is achieved, the stability, seepage-proofing performance and ecological adaptability of the dam body are remarkably improved through the composite reinforcement and ecological protection technology, and the dam body is particularly suitable for loess plateau areas.

The invention discloses a construction method for quickly forming a site on sludge, which is applied to the field of sludge curing technical engineering, and comprises the following steps: firstly, placing a geomembrane and a geogrid on the sludge, placing a geomembrane bag on the geomembrane along a construction side line, and connecting the geomembrane bag with the geogrid; then the geomembrane bag is filled with a flow state solidification mixed material to form membrane bag solidification soil, a closed pouring space is formed through the membrane bag solidification soil, and finally the flow state solidification mixed material is poured into the closed pouring space to form a solidification soil structure layer; wherein the flow-state curing mixed material is formed by mixing field sludge and a curing material through a mixing and stirring system, the field sludge is fully utilized by adopting the flow-state curing mixed material, outward transportation and pollution of the sludge are reduced, the environment is protected, the construction period is shortened, and the manufacturing cost is reduced.