802 results about "Geomembrane" patented technology

The invention relates to the technical field of engineering, in particular to a geomembrane defect detection system and method under the earth and stone medium coverage condition, and the geomembrane defect detection system comprises a multi-mode adaptive sensing module, an edge calculation module, a data fusion module, a digital twinning module and a decision and application module; compared with the defects that single resistivity or geological radar detection is adopted in the prior art, interference of medium conductivity and metal impurities is likely to happen, and the deep resolution is insufficient, the scheme adopts multi-mode sensor network cooperative work, and a dynamic density layout and time-phased acquisition strategy is combined; through multi-mode complementation of an electrode array, an ultra-wideband radar, a distributed optical fiber and an MEMS vibration sensor, a dominant sensing mode is automatically switched in a conductive clay area, temperature gradient interference is avoided through night acquisition, the penetration depth is increased to 15 meters through multi-band radar fusion, and metal interference is inhibited; the detection precision and the anti-interference capability in a complex medium environment are remarkably improved, and the problems of high false alarm rate and high omission ratio of a traditional method are effectively solved.

The invention provides a half-excavation and half-filling whole reservoir basin seepage-proofing drainage type which comprises an asphalt concrete panel arranged along the peripheral side of a reservoir basin and a geomembrane laid at the reservoir bottom, and the asphalt concrete panel on one side of a reservoir bank is in lap joint with the geomembrane by arranging a reservoir bank concrete gallery. The asphalt concrete panel on the concrete faced rockfill dam is in lap joint with the geomembrane through the concrete connecting plate, and the asphalt concrete panel and the geomembrane are connected and fixed through the concrete connecting plate and the reservoir bank concrete gallery. The problem that a concrete panel adopted by a high dam is easy to extrude and damage and the defect that an asphalt concrete panel at the upper reservoir bottom of a high slag filling body is difficult to adapt to non-uniform deformation are overcome, and a new anti-seepage solution is provided for projects with complex terrain and geological conditions, high dam height, deep reservoir bottom filling and poor filling materials; by arranging the reservoir bank concrete gallery, the reservoir bottom concrete gallery and the forebay concrete gallery, a partition monitoring system is formed, the leakage defect part of the reservoir basin can be quickly and effectively identified, and the engineering operation safety is ensured.

The invention provides a multi-parameter geomembrane leakage damage positioning and monitoring system. The multi-parameter geomembrane leakage damage positioning and monitoring system comprises a plurality of multi-parameter positioning and monitoring sensors, a main anti-seepage geomembrane, a secondary anti-seepage geomembrane, an acquisition control center, a cloud server and a data analysis system, a plurality of multi-parameter positioning monitoring sensors are arranged below the main anti-seepage geomembrane or the secondary anti-seepage geomembrane according to a certain interval; each multi-parameter positioning monitoring sensor comprises an electrical parameter sensing unit, a pollution characteristic value parameter sensing unit and an acquisition switching unit; the acquisition switching unit switches and controls the multi-parameter positioning monitoring sensor according to the acquisition control signal; the acquisition control center transmits the electrical parameter data and the pollution characteristic value parameter data to a cloud server; and the cloud server obtains the position coordinates of leakage damage of the geomembrane and the range and degree of leakage pollution caused by leakage damage through the data analysis system. The leakage damage point coordinates are positioned through multiple parameters, and the pollution range and degree caused by leakage damage are judged at the same time.

The invention discloses a winding device for geomembrane production, which comprises a winding roller used for winding a geomembrane, a guide roller assembly used for guiding the geomembrane and smoothing wrinkles on the geomembrane in the geomembrane winding process, and a vibrating mechanism used for vibrating the geomembrane, the shaking mechanism is used for shaking a geomembrane in a certain amplitude in the Y-axis direction in the geomembrane winding process, the cleaning mechanism is used for cleaning and heating the surface of the geomembrane in the geomembrane winding process, and the driving mechanism is used for driving the geomembrane to rotate. And the driving mechanism is used for driving the cleaning mechanism to suck air or exhaust air in a reciprocating mode, driving the winding roller to rotate and driving the vibrating mechanism to drive the geomembrane to shake by a certain amplitude in the Y-axis direction. When the geomembrane winding device is used for winding a geomembrane, dirt on the surfaces of the two sides of the geomembrane can be cleaned at the same time, and wrinkles on the surface of the geomembrane can be removed in the process of cleaning the dirt on the surface of the geomembrane.

The invention relates to the technical field of experimental devices for testing diffusion coefficients, in particular to an experimental device for testing the gas diffusion coefficient of a geomembrane and a testing method.The experimental device comprises a gas supply mechanism, a testing mechanism and a stretching mechanism, the testing mechanism comprises a reaction testing cylinder, and the reaction testing cylinder comprises an upper cavity and a lower cavity; one side of the lower cavity communicates with the air supply mechanism, a containing assembly is arranged between the upper cavity and the lower cavity, and the clamping assembly of the stretching mechanism is detachably connected to the middle of the containing assembly. The problem that the gas diffusion coefficient test of the geomembrane under the coupling action of aging and tensile stress cannot be simulated in the prior art is solved, and a reliable experimental device is provided for evaluating the long-term anti-seepage performance of the geomembrane under the actual working condition.

The invention discloses a preparation method of composite geotechnical cloth, belongs to the technical field of geotechnical material processing, and solves the problems of insufficient interlayer bonding strength, poor permeation stability and incapability of adapting to regional differentiation mechanical requirements in the traditional process. According to the method, two layers of synthetic fiber geotextile and a layer of polymer geomembrane are selected, and a gradient needling machine is adopted to implement a double-station gradient needling process, specifically, thick needle needling pre-reinforcement is synchronously conducted on the upper side and the lower side till the membrane thickness is 50-60% of the depth, then fine needle needling finishing is conducted till the membrane thickness is 70-80% of the depth, the needling density is preset to be 20-70 needles / cm according to different stress areas of a membrane material, and the needling density is 20-70 needles / cm according to different stress areas of the membrane material; in the process, data of needling depth, needling density and membrane material tension are collected in real time through a dynamic monitoring system, parameters are automatically adjusted, and finally a stable structure is formed through heat setting treatment at 120-140 DEG C for 8-12 minutes. The composite geotextile prepared by the method has a high-strength bonding interface and excellent anti-seepage performance, and is suitable for the engineering fields of water conservancy project anti-seepage, road base reinforcement, refuse landfill isolation and the like.

The novel geomembrane double-track sweat soldering process comprises the steps that the surface of a reservoir bottom is subjected to leveling and roughening treatment, so that the roughness depth of the surface of the reservoir bottom is 3-5 mm; cutting the geomembrane into proper sizes, numbering and recording the geomembrane piece by piece, and pressing and covering the exposed edge of the geomembrane through a sand bag; the TPO geomembrane, the novel geomembrane and the HDPE geomembrane are in lap joint in sequence in a staggered mode and welded through a double-track automatic hot melting welding machine, and the edges of the adjacent geomembranes are fused; marking the detected defects on the geomembrane, and arranging repair until the retest is qualified; the novel geomembrane comprises a base material layer and an anti-skid layer, the lower surface of the base material layer is coated with the anti-skid layer, and the thickness ratio of the base material layer to the anti-skid layer is 1: (0.1-0.3). The frosted surface of the novel geomembrane can be tightly attached to the rough surface of the reservoir bottom, the frosted surface and the rough surface are not prone to relative sliding, the service life of the geomembrane is prolonged, and the engineering anti-seepage requirement is met.

The invention discloses a laying device and laying method for a rain and sewage diversion covering material in a fly ash landfill reservoir area, and relates to the technical field of laying of landfill reservoir area covering materials.The laying device comprises a bottom plate and a fixing frame, main wheels are arranged on the two sides of the fixing frame, and a winding roller is arranged in the fixing frame; and the geomembrane material is wound on the circumferential outer wall of the winding roller. In the rotating process of a second rotating column, multiple sets of cams on the outer wall of the second rotating column can be driven to rotate together, at the moment, through extrusion between the cams and rolling wheels, pressure can act on a rotating frame and a pressing roller, and then secondary pressing on a geomembrane material can be achieved through the pressing roller; the stability of geomembrane materials laid in a reservoir area is guaranteed, the faster the device rolls, the larger the centrifugal force borne by the cam is, then the larger the pressing force applied to the rolling wheel is, and therefore the pressing force of the pressing roller on the geomembrane materials changes along with the rolling speed of the device.

The bank protection cofferdam structure comprises a first pile row and a second pile row which are arranged in parallel, the first pile row and the second pile row are driven in soil, the upper end of the first pile row and the upper end of the second pile row are connected through an opposite-pulling mechanism, a first bamboo raft sheet layer and an anti-seepage geomembrane are arranged on the inner side of the first pile row, and a second bamboo raft sheet layer and an anti-seepage geomembrane are arranged on the inner side of the second pile row. A second bamboo raft piece layer and geotechnical cloth are arranged on the inner side of the second pile row, backfill soil is arranged between the first pile row and the second pile row, and bagged soil is evenly laid on the top of the backfill soil. The anti-seepage performance and the stability of the revetment cofferdam structure can be improved.

The present invention relates to a double-layer geomembrane core wall rockfill dam structure and a construction method. The purpose of the present invention is to provide a double-layer geomembrane core wall rockfill dam structure and a construction method with superior anti-seepage performance and reliability. The technical solution of the present invention is: a double-layer geomembrane core wall rockfill dam structure, characterized in that: the rockfill dam has a double-layer geomembrane anti-seepage core wall structure; the double-layer geomembrane anti-seepage core wall structure is sequentially provided with an upstream sand cushion layer, an upstream geomembrane, a middle silt layer, a downstream geomembrane and a downstream sand cushion layer from upstream to downstream. The present invention is applicable to the field of water conservancy and hydropower engineering.

The utility model relates to a hemming system for seaming a geomembrane on a building protective net, which comprises a first tensioning device, a sewing device and a monitoring tensioning device for the building protective net to enter in sequence, and an edge folding device for folding the edge of the building protective net is further arranged between the first tensioning device and the sewing device. A folding guide device for folding the geomembrane and then feeding the geomembrane into the folded edge of the building protective net is further arranged between the edge folding device and the sewing device, and the monitoring tensioning device is electrically connected with the first tensioning device. When the folding device is used, a geomembrane is folded through the folding device and then fed into a folded edge, meanwhile, the tensioning degree of the building protective net at the sewing device is monitored in real time through the monitoring tensioning device, and when the building protective net is too tight, a signal is transmitted to the first tensioning device to drive the first tensioning device to loosen the building protective net; therefore, the tensioning effect of the building protective net is adjusted, and the needle head is prevented from being broken.

The invention belongs to the technical field of side slope geomembrane laying, and particularly relates to an automatic side slope geomembrane laying machine and a laying method thereof.The automatic side slope geomembrane laying machine comprises a base, a first limiting device is installed above the base, a sliding groove is formed in the upper portion of the base, a second limiting device is slidably connected into the sliding groove, and a geomembrane roll is placed between the first limiting device and the second limiting device; a power device is mounted above the base, and a geomembrane roll is in contact with the power device. Compared with the prior art, the geomembrane roll mounting device has the advantages that a first limiting device is mounted above the base, a sliding groove is formed above the base, a second limiting device is slidably connected into the sliding groove, and the geomembrane roll is mounted on the base through adjustment between the second limiting device and the first limiting device; according to the geomembrane laying device, geomembrane rolls with different breadths can be met, the geomembrane rolls are driven by the first motor to rotate, geomembranes are automatically laid, no extra rail needs to be installed, cost is saved, the geomembrane laying efficiency is improved, and geomembrane laying can be conducted on side slopes with different gradients and different slope lengths.

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 utility model relates to the technical field of geomembrane laying assistance, and provides a geomembrane flattening structure which comprises a pair of supports and a pair of moving wheels, the moving wheels are arranged at the lower ends of the supports, shaft seats are rotatably connected in the supports, a bulldozing assembly is arranged on the supports, a locking assembly is arranged on one side of each support, and the bulldozing assembly comprises a fixing column. The fixed column is arranged on the side surface of the support, the fixed column is rotationally sleeved with a swing frame, an extension rod is movably sleeved with the swing frame, and a long hole is formed in the surface of the swing frame. By means of the technical scheme, the problems that in the prior art, when a geomembrane is flattened, a traditional geomembrane flattening mode is usually adopted, a geomembrane roll is rotated and flattened by manually pulling a roller body, the defects still exist in the operation process, the needed labor intensity is large, the working efficiency is low, wrinkles are likely to occur in the flattening process, and the working efficiency is high are solved. The flattening device is not attached to the laid ground, and the flattening effect is poor.

The invention discloses a novel single-rail extrusion welding process for a geomembrane. The process comprises the following steps: carrying out leveling treatment and drying treatment on the surface of a reservoir bottom; the geomembrane is cut into a proper size and laid on the surface of the reservoir bottom, and the lap joint area is kept in a flat state; the TPO geomembrane, the novel geomembrane and the HDPE geomembrane are sequentially lapped in a staggered joint mode and welded through a single-rail extrusion welding machine, so that intersection points formed among membrane blocks are in a T shape; testing the geomembrane, and marking and repairing the found defect part until the retest is qualified; the novel geomembrane comprises a base material layer and an anti-ultraviolet layer, the upper surface of the base material layer is coated with the anti-ultraviolet layer, and the thickness ratio of the base material layer to the anti-ultraviolet layer is 1: (0.1-0.5). The construction is convenient, the adopted novel geomembrane has the excellent deformation adaptive capacity of an elastic material and the weldability of a plastic material, and when the geomembrane is used for seepage control of a reservoir area, leakage damage to a reservoir bottom connecting part can be avoided.

The invention discloses a polyethylene composite geomembrane and a processing technology thereof in the field of geosynthetic materials. The polyethylene composite geomembrane is prepared from the following raw materials: high-density polyethylene, polyethylene grafted maleic anhydride, a nano montmorillonite / low-density polyethylene composite modifier, an antioxidant, a light stabilizer and a lubricant calcium stearate. Wherein the polyethylene grafted maleic anhydride is prepared by drying high-density polyethylene, mixing the dried high-density polyethylene with maleic anhydride, an initiator and an antioxidant, and performing melt extrusion through a double-screw extruder, so that the surface polarity is improved; the nano-montmorillonite / low-density polyethylene composite modifier is prepared by ultrasonically dispersing Na-montmorillonite, adding hexadecyl trimethyl ammonium bromide, stirring, centrifugally drying to obtain organic modified montmorillonite, mixing the organic modified montmorillonite with low-density polyethylene, performing intercalation reaction, and performing twin-screw extrusion and blending, so that the barrier property is enhanced. The processing technology comprises the steps of raw material mixing, twin-screw extrusion granulation and calendaring molding, and finally the polyethylene composite geomembrane with remarkably improved interface cohesiveness, weather resistance and barrier property is prepared.

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 discloses a high-puncture-resistance polyethylene geomembrane as well as a production device and a production process thereof, and belongs to the technical field of geomembranes. The high-puncture-resistance polyethylene geomembrane comprises an upper-layer membrane, a first middle-layer membrane, an inner-layer membrane, a second middle-layer membrane and a lower-layer membrane from top to bottom, each of the upper-layer film and the lower-layer film comprises the following components in parts by weight: 90-100 parts of modified linear low-density polyethylene resin and 2-10 parts of double-resistance black master batch; each of the first middle-layer film and the second middle-layer film comprises 40-60 parts of medium-density polyethylene resin, 35-55 parts of metallocene high-density polyethylene resin and 2-10 parts of double-resistance black master batch; and the inner-layer film comprises 60-80 parts of medium-density polyethylene resin, 15-35 parts of linear low-density polyethylene resin and 2-10 parts of double-resistance black master batch. The polyethylene geomembrane is of a symmetrical five-layer membrane structure with the inner layer membrane as the center, the components of all the layers and the proportional relation between the components are specifically limited, the puncture resistance and the environmental stress cracking resistance of the polyethylene geomembrane are synchronously improved, and the requirements of severe environment anti-seepage engineering are met.

The geomembrane unfolding device comprises a bottom frame, a first supporting column is arranged above the rear end of the bottom frame, the top of the first supporting column is connected with a U-shaped supporting block, and a rolling shaft is movably arranged in an inner cavity of the U-shaped supporting block; the feeding rollers and the rubber sleeve are used in cooperation, the geomembrane is clamped between the two feeding rollers, when the geomembrane is cut off, the cut-off position of the geomembrane cannot be thrown away, the use safety is high, due to the arrangement of the rubber sleeve, the rotation damping of the rolling shaft is increased, and when the first motor stops working, the rolling shaft cannot rotate, so that the service life of the geomembrane is prolonged, and the service life of the geomembrane is prolonged. And the rotation amplitude of the rolling shaft influenced by inertia can be reduced, so that the situation that the geomembrane is scattered after the equipment is stopped is avoided, and the overall practicability is improved.

The invention relates to the technical field of geomembranes, and discloses an anti-static composite geomembrane and a preparation method of the anti-static composite geomembrane. Comprising the following raw materials: high-density polyethylene, linear low-density polyethylene, maleic anhydride grafted high-density polyethylene, an ultraviolet light absorber, an antioxidant, a plasticizer, a lubricant, anti-static composite rubber and an anti-corrosion reinforcing filler. The prepared geomembrane has the advantages of excellent antistatic capability, corrosion resistance, impact resistance, high mechanical strength, good wear resistance, high temperature resistance and small crack repairing capability, can meet the use requirements in various environments, and has a long service life.

The utility model discloses an edge cutting device for geomembrane production, which relates to the technical field of geomembrane production and comprises a bottom plate, a support frame is fixedly mounted in the middle of the top of the bottom plate, four connecting blocks are fixedly mounted on two sides of the support frame, one side of each connecting block is movably connected with a guide roller, and the other side of each connecting block is movably connected with a guide roller. An electric two-way sliding groove is fixedly formed in the top of the interior of the supporting frame, a center block is fixedly installed in the middle of the interior of the electric two-way sliding groove, a measuring scale is fixedly installed on one side of the electric two-way sliding groove, and telescopic columns are fixedly installed on the two sides of the top of the bottom plate. According to the edge cutting device for geomembrane production, tooth washing guiding can be conducted on a geomembrane through guide rollers on one sides of two connecting blocks, two moving blocks can be driven to move towards the two sides or the middle at the same time through operation of an electric two-way sliding groove, the cutting width can be adjusted accordingly, the width can be measured through a measuring ruler, and the cutting efficiency is improved. And therefore, the width can be conveniently adjusted.

The invention discloses an anti-settlement subgrade layered filling structure and a construction method, the anti-settlement subgrade layered filling structure comprises soft rock filler layers, a silty sand layer is filled every other soft rock filler layer with a fixed thickness, and a composite geomembrane is laid on the silty sand layer; the composite geomembrane sequentially comprises a curing layer and a drainage layer from bottom to top, the curing layer comprises a plurality of reinforcing units distributed in an array mode, each reinforcing unit comprises an upper layer and a lower layer which are filled with urease and cementing liquid respectively, the urease and the cementing liquid are sealed through the geomembrane, a trigger device is arranged in the upper layer, and the drainage layer is arranged in the lower layer. When the roadbed is settled, the trigger device moves downwards along with the roadbed to solidify the settled part; the drainage layer comprises a capillary drainage structure and is used for transversely guiding water out to the side slope. All the structural layers are matched with one another, outside water is prevented from entering a soft rock filling layer, meanwhile, the drainage capacity of the soft rock roadbed is greatly improved, the disintegration and softening effects of rainwater on soft rock are reduced, the service life of the soft rock roadbed is prolonged, the long-term stability of the roadbed is improved, and applicability is high.

The invention relates to the field of water conservancy construction, and particularly discloses channel or river concrete lining plate construction repairing equipment and a repairing method thereof in a running water state, and the equipment comprises a truss, an operation module, an underwater non-dispersive concrete regeneration mixing module, a power system and an automatic control system, wherein the operation module comprises a cutting module, a grabbing module, a geomembrane repairing module and an underwater non-dispersive concrete printing module, and the cutting module, the grabbing module, the geomembrane repairing module and the underwater non-dispersive concrete printing module are selectively arranged on the crane beam according to operation content; and the automatic control system is respectively in electric signal connection with the power system, the underwater non-dispersible concrete regeneration mixing module and the operation module. The scheme can adapt to different channel bank slope surface or river channel slope surface conditions, and concrete lining plates at different damaged positions can be subjected to automatic cutting, dismantling, regeneration mixing, geomembrane repairing and underwater non-dispersive concrete printing operation.

The invention discloses a method for sealing phosphogypsum by using an underground goaf. The method comprises the following steps: S1, forming an outermost anti-seepage flexible support layer through a hollow grouting anchor rod, a grouting body and roadway surrounding rock; s2, a hanging net is woven and hooked on the hollow grouting anchor rod, slurry is sprayed for reinforcement, and a concrete guniting layer is formed; s3, an anti-seepage geomembrane is laid, and an inner anti-seepage membrane flexible layer is formed; s4, after phosphogypsum slurry is pumped and injected into the goaf, a grouting inlet is sealed; and S5, pouring concrete partition wall plugging. By reasonably utilizing the characteristics of the goaf and the ardealite, two major hazard factors are organically combined together to form alternate resources for use, large-capacity safe storage of the ardealite can be realized, the risks of occupying a large amount of land and polluting surface soil water are avoided, the resource utilization of the goaf is realized, and the resource utilization rate of the goaf is increased. And a good recovery condition is created for phosphogypsum resource utilization in the future.

The utility model relates to a high-pressure jet grouting cutoff wall clay core wall earth rock cofferdam construction structure which comprises the following steps: S1, surveying and lofting by a surveying ship, and determining a block stone throwing and filling area; s2, rubble embankment riprap filling and dynamic elevation re-checking are carried out; s3, filling construction of a clay core wall in a central area; s4, construction of the high-pressure jet grouting expansion diaphragm wall; and S5, anti-seepage construction of the composite geomembrane of the upper slope section is conducted. According to the construction method of the clay core wall earth rock cofferdam of the high-pressure jet grouting cutoff wall, the construction speed is high, the anti-seepage effect is good, and the construction technical defects that in the construction process of an existing deepwater earth rock cofferdam, the riprap precision is low, the high-pressure jet grouting cutoff wall leaks slurry, the anti-seepage effect of an upstream slope is poor and the like are overcome; the construction method has the construction advantages of high stability, high efficiency, high benefits and the like during implementation, and the technical benefits are remarkable.

The geomembrane welding machine with the folding handle comprises a geomembrane welding machine body and a handle body, a containing mechanism is arranged at the top of the geomembrane welding machine body, and the containing mechanism comprises a containing groove, a U-shaped plate, a reset spring, an insertion rod, a through groove, a pull rod and a through hole. The handle body is movably connected to the rear side of an inner cavity of the storage groove through a bearing, and a pull rod is pulled outwards to drive a fixing plate to extrude a first telescopic rod and a reset spring, so that the first telescopic rod is compressed, the reset spring is deformed, and an insertion rod is driven to move outwards; and when the pull rod is loosened, the reset spring deforms again due to the action of losing force, the insertion rod is driven to be inserted into the insertion hole, the handle body is stored and fixed, when the handle body does not need to be used, folding and storage are convenient, and the occupied space is reduced.

The utility model provides a quick greening structure suitable for a plateau slag piled body, which comprises a protective structure positioned at a slope toe of the slag piled body, an outer side guard formed by splicing reinforced concrete prefabricated members left and right is arranged on the side, close to a river, of the protective structure, and a planting groove is formed by the outer side guard and the top surface of the protective structure; a composite geomembrane is laid on the inner surface of the planting groove, and the composite geomembrane is filled with planting soil; the reinforced concrete prefabricated part comprises a front wall soil retaining section, a rear wall stabilizing section and a middle connecting section used for connecting the front wall soil retaining section and the rear wall stabilizing section. The front wall soil retaining section, the rear wall stabilizing section and the middle connecting section are I-shaped, and the front wall soil retaining section is thin-walled; the front wall soil retaining section is located on the lower side of the slope, and the rear wall stabilizing section is located on the upper side of the slope. At least the rear wall stabilizing section is embedded into the planting soil. The rapid greening structure is high in construction speed, good in greening effect in the plateau area, high in safety, low in investment, durable and reliable in structure and good in greening effect.

The invention relates to the technical field of geomembranes, and discloses a high-strength durable composite geomembrane and a preparation method thereof.The high-strength durable composite geomembrane is composed of a non-woven fiber cloth layer and a base material layer; wherein the base material layer comprises the following raw materials: linear low-density polyethylene, high-density polyethylene, an anti-aging additive, a heat dissipation reinforcing filler, a dispersing agent, an initiator and a flame retardant; the anti-aging additive and the heat dissipation reinforcing filler are prepared and added into the preparation process of the geomembrane base material layer, so that the prepared geomembrane has excellent mechanical strength, wear resistance and impact resistance and also has a long-term anti-aging effect, the durability of the geomembrane is remarkably enhanced, and the service life of the geomembrane is prolonged. And the use requirements in long-term engineering in various complex environments can be met, and the service life is long.

The utility model relates to a structure for treating permeation stability of a double-layer embankment foundation, which comprises the embankment foundation, an embankment body is arranged above the embankment foundation, a clay inclined wall is arranged on the upstream side of the embankment body, the bottom of the clay inclined wall is connected with the top of a high-pressure-spraying anti-seepage wall, the bottom of the high-pressure-spraying anti-seepage wall extends into an impervious layer, and the bottom of the high-pressure-spraying anti-seepage wall is connected with the top of the high-pressure-spraying anti-seepage wall. The slope toe of the clay inclined wall is provided with a concrete interlocking block and a grouted rubble foot protection part, the top elevation of the concrete interlocking block protection part is higher than the embankment foot backfill ground line, a geomembrane is arranged at the top of the high-pressure-spraying anti-seepage wall and is laid in the geomembrane tooth groove laying direction, and one end of the geomembrane is fixed in the geomembrane tooth groove fixing direction. The embankment body adopts the clay inclined wall, so that the anti-seepage effect is good, and the embankment foundation deformation adaptability is high. The high-pressure spraying anti-seepage wall is adopted in the embankment foundation, seepage can be effectively blocked, the seepage path can be effectively prolonged, and seepage damage is prevented.

The utility model discloses a deep covering layer foundation high earth rock cofferdam anti-seepage structure which comprises a concrete anti-seepage wall, curtain grouting is connected to the lower portion and the side portion of the concrete anti-seepage wall, and composite geomembrane inclined walls are arranged on toe boards on the upper portion of the concrete anti-seepage wall and the upper portion of the curtain grouting. The composite geomembrane inclined wall comprises a rock-fill layer, a supporting layer, a lower cushion layer, a lean cement mortar fixed slope, a composite geomembrane, an upper cushion layer, a geotechnical cloth inverted filter layer and a five-twisted steel wire gabion protective layer which are sequentially arranged from bottom to top. According to the cofferdam anti-seepage structure, combined anti-seepage of the composite geomembrane inclined wall, the concrete anti-seepage wall and the curtain grouting is adopted, on-site construction is facilitated, the multiplicity and safety of combined anti-seepage are utilized to the maximum extent, the situation that the whole cofferdam is unstable due to the fact that anti-seepage treatment is not in place is avoided, and the cofferdam anti-seepage structure has the advantages of being simple in structure and convenient to use. And the integrity and effectiveness of the whole anti-seepage structure of the cofferdam are ensured, the anti-seepage effect is improved, and the anti-seepage quality is