651 results about "Geotextile" patented technology

The invention provides a construction method of a CRTS III type slab ballastless track, and relates to the technical field of high-speed rail construction, and the construction method comprises the following steps: mounting base plate steel bars, side forms, end templates and limiting groove templates, placing foam plates at expansion joints, and reserving track slab pressing and anchoring holes; base plate concrete is poured, and base plate concrete formwork removal, surface finishing, maintenance and expansion joint construction are carried out after pouring; constructing a geotextile isolation layer and an elastic cushion layer; limiting groove steel bars and self-compacting concrete layer steel bar meshes are installed, and track plates are placed; before and after the track plate and the base plate are fastened by the pressing device, the track plate is finely adjusted by the fine adjustment device; and a self-compacting concrete formwork is installed, self-compacting concrete is poured, and post-pouring treatment and curing are conducted. The track plate and the base plate are fastened through the pressing device, so that the track plate, the base plate and the self-compacting concrete layer are tightly attached in the self-compacting concrete pouring period, and the situation that reworking or track laying is difficult due to the fact that the floating amount of the track plate is too large is avoided.

The invention belongs to the technical field of sewage treatment, and particularly relates to an oxygen gradient self-coupling granular sludge partition reactor which comprises a reactor body, the reactor body is of a vertically-arranged tower structure, and an aeration system, a water distribution system, a partition assembly, a three-phase separator, a gas collection assembly, a water outlet assembly and a sludge discharge port are arranged in the reactor body. Wherein at least one layer of separation assembly is arranged, and the separation assembly divides an inner cavity of the reactor body into a first reaction function area and a second reaction function area which are connected in series up and down; the separation assembly comprises PET geotechnical cloth, and grating supporting plates are arranged on the upper side and the lower side of the PET geotechnical cloth. The functions of aeration, reaction, separation, water outlet and the like are integrated through a vertical tower type structure, high efficiency and energy conservation in the sewage treatment process are achieved, nitrification and denitrification reactions are synchronously completed in a single reactor by utilizing an oxygen gradient self-coupling mechanism in aerobic granular sludge, a traditional nitrification liquid internal reflux and sludge reflux system is not needed, and the cost is reduced. And the energy consumption and the operation cost are obviously reduced.

The invention discloses an efficient dehydration treatment device for waste engineering slurry and a dehydration method of the efficient dehydration treatment device. Relates to the technical field of rapid dehydration of high-water-content waste slurry. The dehydration treatment device comprises a waste slurry pipeline conveying module, a precise dosing module, a multi-stage pipeline mixing and dissolving module and a geotextile tube bag dehydration module which are connected in sequence. Accurate dosing can be achieved according to the water content of the slurry in the slurry sedimentation tank, negative effects on the flocculation effect of the slurry due to too much or too little flocculants are avoided, use of flocculant materials is reduced, the material cost is greatly reduced, meanwhile, the flocculants are arranged, the cationic flocculant YAPAM is adopted as the flocculants, and the flocculation effect of the slurry sedimentation tank is improved. The flocculant has the advantages of small dosage, good flocculation effect, environmental protection and the like. In the flocculating settling process of the slurry, soil particles in the slurry can be rapidly gathered and precipitated through the effects of electric neutralization and adsorption bridging, and the formed floc is stable in structure, large in size and not prone to being broken.

The invention discloses an anti-fouling curtain structure for water dredging engineering, and belongs to the technical field of environment protection of dredging engineering, the anti-fouling curtain structure for water dredging engineering comprises a floating body, an anti-fouling curtain and a vertical body, the floating body is arranged at the top end of the anti-fouling curtain, the vertical body is arranged at the bottom end of the anti-fouling curtain, and the anti-fouling curtain is geotechnical cloth; the geotechnical cloth is prepared from the following components in parts by weight: 100 to 150 parts of polyester, 20 to 50 parts of copolyester and 5 to 30 parts of inorganic filler, the copolyester is a copolymer of terephthalic acid, 5-sulfoisophthalic acid sodium salt, ethylene glycol and dihydroxyl-terminated polyvinyl imidazole, and the geotechnical cloth is further prepared by a post-treatment step. According to the invention, the copolyester composed of terephthalic acid, sodium 5-sulfoisophthalic acid, ethylene glycol and dihydroxyl-terminated polyvinyl imidazole and the inorganic filler are added into the polyester fiber, and the polyester fiber is modified through a post-treatment step, so that the alkali resistance and the antifouling property of the antifouling curtain are improved.

The invention discloses a dredged mud upper and lower part double-face combined vacuum consolidation drainage method, which comprises the following specific implementation processes: laying a horizontal sand bag containing a PVC (Polyvinyl Chloride) pipe and a vertical drainage pipe at the bottom of a cofferdam foundation pit to serve as a bottom drainage system, blowing and filling dredged mud in a layered manner, controlling the thickness and the water content of each layer, and when the water content of a soil body is lower than twice liquid limit, stopping drainage; starting the bottom vacuum water pumping device to perform preliminary water drainage, inserting straw bundles into the soil body through hollow pipes with bottom covers to form a vertical water drainage structure after the strength of the soil body meets the requirement, sequentially laying geotechnical cloth, a straw woven blanket, a PVC water drainage pipe network and a sealing film on the top to construct a top vacuum system, and finally synchronously starting the top vacuum water pumping device and the bottom vacuum water pumping device. The vacuum difference is controlled by adjusting the ventilation device, and upper and lower double-face combined vacuum consolidation drainage is achieved. The drainage consolidation of the dredged mud is effectively accelerated, the treatment efficiency is improved, and the drainage effect is enhanced through precise control over the vacuum degree and application of materials such as straw.

Permafrost thawing prevention may involve deploying a cooling geotextile onto a permafrost soil. The geotextile may include a biomass scaffold comprising natural plant-based fibers. The geotextile may further include a cellulose layer comprising cellulose fibers laminated onto the biomass scaffold such that the cellulose fibers are physically entangled with the plant-based fibers. The geotextile may further include a hydrophobic and biodegradable coating which defines at least one surface of the geotextile. The geotextile may be optically opaque, exhibits high solar reflectivity, and maintains high mid-infrared emissivity to enable passive radiative cooling.

The invention discloses a ground surface settlement prevention and control method based on mold bag grouting. The ground surface settlement prevention and control method comprises the following steps that geological investigation is conducted, and pile positions are arranged; drilling at the pile position to form a pile hole; the method further comprises the following steps that the main grouting pipe and the geotextile bag on the main grouting pipe are placed into the pile hole together, and backfilling is conducted between the pile hole and the main grouting pipe; pressure grouting is conducted in the main grouting pipe, the grout in the main grouting pipe rises gradually, meanwhile, the grout in the main grouting pipe is pressed into the geotextile mold bag through the secondary grouting pipe, and the geotextile mold bag expands gradually in the radial direction and extrudes the surrounding soil body; and grouting is stopped, and after the grout in the main grouting pipe and the soil engineering mold bag is hardened, the main grouting pipe and the soil engineering mold bag jointly form a mold bag pile body. The construction method has the beneficial effects that the grouting pipes are arranged underground, the expandable mold bags are installed at the preset positions of the grouting pipes, after grout is injected, the mold bags expand directionally and evenly extrude the surrounding soil body, and therefore active compaction of the soil body is achieved, and the rigidity and integrity of a foundation are remarkably improved.

The invention belongs to the technical field of geogrids, and discloses a geogrid with a drainage function and a manufacturing device and method.The geogrid comprises a plurality of grid strips, the grid strips are divided into drainage strips and common strips, each drainage strip comprises a groove-shaped strip body, a drainage groove is formed in the groove-shaped strip body in the length direction of the groove-shaped strip body, and the common strips are arranged in the drainage groove. Geotextile is arranged on the groove-shaped strip body and located on the notch side of the drainage groove, the common strip comprises a rectangular strip body and a groove-shaped strip body, a plurality of fiber tows are arranged in the rectangular strip body at intervals, drainage strips are adopted as the longitudinal grid strips, and drainage strips or common strips are adopted as the transverse grid strips. The design of the longitudinal drainage strips is adopted, the drainage channel penetrating in the longitudinal direction is formed, free water in the soil body can be rapidly collected and directionally drained out of an engineering area, the soil body saturation degree is effectively reduced, the residence time of water in the soil body is shortened, and the problems that due to water accumulation, the dead weight of the soil body is increased, and the bearing capacity is reduced are solved.

The invention discloses a multifunctional composite waterproof blanket suitable for roadbed engineering. The multifunctional composite waterproof blanket sequentially comprises anti-skid convex strips, a first waterproof layer, a leakage monitoring layer, a second waterproof layer, a water guide and drainage layer, a protection layer, a drainage line and anti-skid protrusions from top to bottom. The waterproof layer is formed by uniformly mixing super-hydrophobic soil and fibers and then clamping and sealing the mixture between two layers of non-woven geotechnical cloth according to a preset compaction degree; the water guide and drainage layer is composed of an upper layer of high-suction geotextile, water absorption and drainage yarn and a lower layer of permeable geotextile. The multifunctional composite waterproof blanket suitable for the roadbed engineering is used for solving the problems that an existing waterproof blanket cannot effectively block the migration path of water and rapidly discharge water accumulated in a roadbed in the water-rich roadbed engineering, and meanwhile, the situation of water leakage and waterproof material damage cannot be monitored in real time, so that roadbed diseases occur frequently and deterioration is accelerated; and the engineering waterproof and drainage quality is difficult to guarantee.

The utility model belongs to the technical field of retaining wall, disclose a water conservancy building retaining wall, including retaining wall, backfill and concrete bottom plate, the retaining wall inside is equipped with the water outlet pipe, backfill inside is equipped with the drainage blind ditch, drainage blind ditch inside is equipped with the filter structure, drainage blind ditch is connected with the water outlet pipe through the connecting structure, set up drainage blind ditch and water permeable geotextile when backfilling backfill, reduce the water level of backfill layer upper end to drainage blind ditch lower end, the water of upper end is through drainage blind ditch and flows to water permeable net pipe, the silt that enters water permeable net pipe is reduced through the filtration of blind ditch gravel and geotextile, again due to the water of inside flow of water permeable net pipe can take away trace silt, thereby avoid the deposition of silt and cause the blockage, the water in water permeable net pipe is taken away through the water outlet pipe that is preburied in retaining wall, thereby reduce the hydrostatic pressure of backfill to retaining wall.

The utility model discloses a building toilet seepage water integral isolation drainage drainage waterproof device which comprises a drainage pipe arranged at the upper end of a sewage drainage pipe, a PVC (polyvinyl chloride) floor sealing plate is arranged on the inclined surface of a floor, a stainless steel filter plate is arranged on the PVC floor sealing plate, an accumulated water overflow cover is fixedly arranged in the middle of the PVC floor sealing plate, and the drainage pipe is arranged on the drainage pipe. Grid holes are formed in the upper end of the accumulated water overflow cover, a geotechnical cloth layer is arranged in a cavity between the accumulated water overflow cover and the stainless steel filter plate, a PVC side face sealing plate is arranged on the inner side face of the wall body, the lower end and the side face of the PVC side face sealing plate are integrally provided with bent connecting edges, and the connecting edges enable the PVC side face sealing plate and the PVC floor sealing plate to achieve electric melting sealing connection at the wall corner. The utility model not only has a simple structure and is convenient to manufacture and construct, but also can effectively prevent seepage water from seeping into the floor of the toilet, and effectively solves the hidden danger of water leakage and the difficult problem of water prevention at the place where the toilet of the building is contacted with the pipe and at the corner.

This invention provides a construction method for improving the drainage capacity of road structures, relating to the field of drainage function technology for the renovation and upgrading of old roads. It separates water bodies between the upper and lower structural layers and the original ground surfaces on both sides of the road structure layer by forming an emulsified asphalt layer and waterproof geotextile. A rapid drainage structure is formed using a concrete pavement crushed stone layer, filled with crushed stone, drainage geogrids, sidewalk rubble, a filter layer, and drainage pipes. This achieves rapid drainage of the road structure, ensuring the stability of the road structure layer in the renovation of old pavements, reducing differential settlement caused by groundwater and other factors, and avoiding disturbance to the road and the resulting reflective cracks. This invention improves the drainage performance at the junction of sidewalks and roads, reducing water disturbance problems.

The invention relates to the technical field of soil remediation, and discloses a preparation method and an application method of geotechnical cloth for remediation or barrier of heavy metal contaminated soil. The graft modified keratin geotextile is prepared through pretreatment, cleaning, geotextile processing preparation and modification treatment. When the graft modified keratin geotextile is used for repairing the heavy metal contaminated soil, the graft modified keratin geotextile is laid below or inside the contaminated soil, and heavy metal ions in the soil are released into a liquid phase through leaching treatment and are adsorbed and fixed by the graft modified keratin geotextile. The method is efficient in treatment, can adsorb and remove heavy metals in the soil within a week, solves the problem of heavy metal migration and diffusion in a traditional remediation technology, is free of secondary pollution, can guarantee the original physicochemical properties of the soil, treats pollution with waste, and is low in cost. In addition, the composite material can also be used as an isolating layer, effectively avoids diffusion of heavy metal in soil, and has a wide application prospect.

The invention belongs to the technical field of water conservancy anti-seepage reinforcement, and discloses a flexible composite water conservancy slope anti-seepage reinforcement device which comprises a water conservancy slope body, an anti-seepage mechanism is installed at the top end of the water conservancy slope body, a reinforcement mechanism is arranged in the water conservancy slope body, and a pouring fixing mechanism is installed at the top end of the anti-seepage mechanism. Through cooperation of the shoreside fixing blocks, the high-strength plastic partition shed geotechnical cloth, the balance weight columns and other structures, the device can be rapidly laid to form a foundation impermeable layer to meet the water conservancy slope surface protection requirement, the shoreside fixing blocks are fixed to the top end of a water conservancy slope body to provide stable supporting, the high-strength plastic partition shed geotechnical cloth is laid to cover the slope surface, and the water conservancy slope surface protection requirement is met. The counterweight columns are inserted into the slope body through the self weight and the spine-shaped limiting columns, the connecting joints of the geotechnical cloth and the cement blanket are fixed, a pouring area is formed after the counterweight columns and the cement blanket are folded, a composite anti-seepage structure is formed in cooperation with follow-up pouring, and finally the effects of rapidly constructing a large-area slope anti-seepage foundation and improving the anti-seepage stability are achieved.

The application discloses a kind of anti-frost heaving and thawing subgrade and its construction method, blind ditch and aeolian sand layer are arranged at the bottom of the subgrade, from bottom to top, pebble layer, soil replacement layer, semi-rigid structure layer, anti-freezing temperature insulation layer, waterproof layer and pavement layer are sequentially arranged in the subgrade, the pebble layer is embedded with ventilation layer, which is used to ventilate and cool the lower part of the subgrade to prevent thawing and sinking, the semi-rigid structure layer is embedded with heat pipe in the anti-frost heating system, and geotextile drainage layer extending to the outside of the slope is arranged above and below the heat pipe, which is used to heat the upper part of the subgrade and drain water to prevent frost heaving.The application uses solar energy to heat the inside of the subgrade, and effectively improves the absorption rate of solar energy by setting heat collector and heat absorption cavity, which improves the heating effect of the upper part of the subgrade to prevent frost heaving, and at the same time, strengthens the heat dissipation of the lower part of the subgrade to prevent thawing and sinking.

The utility model discloses a geotechnical cloth fixing device for roadbed construction, including bottom fixed block, the top fixed block is installed to the top of bottom fixed block through screwdown assembly, be provided with clamping positioning assembly between bottom fixed block and top fixed block, the bottom of bottom fixed block is provided with the rolling groove, and the side of bottom fixed block is fixedly installed with the side support, and the rolling shaft is rotatably installed on the side support, this geotechnical cloth fixing device for roadbed construction, set up the rolling shaft, can set up the geotextile of extra and wind around, avoid the problem that the edge is long and is accumulated together, inconveniently fixed, set up screwdown assembly, can drive top fixed block to move down, cooperate clamping positioning assembly, can be tightly fixed with geotextile, through double compression, can realize the stable fixing of geotextile, avoid the problem that geotextile is blown away with the wind when meeting strong wind weather.

The utility model discloses an automatic geotechnical cloth laying and fixing device belongs to geotechnical cloth laying technical field, including the vehicle body, the geotechnical cloth roll of winding state is placed on the base layer, and the vehicle body is pressed in the geotechnical cloth roll end, the groove of being located the both sides of vehicle body is set up on the base layer, and the geotechnical cloth roll both ends are hanging in the groove, and the base layer is piled up with the soil heap corresponding to the groove, and the push laying assembly is fixedly arranged in the front side of vehicle body, and the push laying assembly can push the geotechnical cloth roll to roll and lay, and the geotechnical cloth roll corresponds, the pusher assembly that can push the soil of soil heap into the groove is arranged on the both sides of vehicle body, and the pusher assembly corresponds with the soil heap. The application can replace the manpower to carry out the quick laying and fixing to the geotechnical cloth through setting up the groove, setting up the soil heap and setting up the push laying assembly and the pusher assembly on the vehicle body.

The invention belongs to the technical field of box girder construction, and particularly relates to a small box girder industrial intelligent construction method which comprises the steps that S1, a bottom die and side dies are installed; s2, binding bottom plate and web reinforcing steel bars: binding a bottom plate and a web reinforcing steel bar framework of the box girder on the bottom template, meanwhile, pre-burying a prestressed pipeline, reserving a mud jacking hole and an exhaust hole, and arranging a horizontal vibrator in the prestressed pipeline; s3, mounting an inner mold and binding top plate steel bars; s4, end formworks are installed; a bottom plate, a web plate and a top plate are sequentially poured, vertical vibration is conducted through an insertion type vibrator, horizontal vibration is conducted through a horizontal vibrator, self-adaptive traction is conducted on the prestressed pipeline while vibration is conducted, after pouring is completed, geotextile or a plastic film covers the prestressed pipeline, and moisturizing maintenance is conducted; s6, the formwork is dismantled; s7, prestress tensioning is conducted; and S8, duct grouting and anchor sealing are conducted. The problem that the prestressed pipeline deforms due to the fact that concrete is vibrated unevenly manually can be solved.

The application provides a kind of slurry shield mud high-efficiency green zero-discharge construction method, relating to slurry shield technology field, and the construction method includes slurry bucket groove construction, high-quality mud mixing, slurry separation treatment, new slurry preparation, slurry emergency treatment, by screening treatment to waste mud, solid particles in mud can be separated, treated mud can be recycled, effectively avoiding the generation of waste mud; geotextile tube can handle waste mud when slurry treatment equipment fails or runs overload, when shield machine passes through risk source, ensure continuous tunneling of shield machine and rapid passing, improve the reliability of shield; by adopting assembled bucket groove structure, construction is convenient and material can be reused, avoiding the risk of slurry leakage; the application realizes efficient continuous uninterrupted tunneling of slurry shield in complex environment by combining module bucket groove structure + slurry green treatment process + geotextile tube treatment.

The application discloses a kind of suitable for mass concrete film laying maintenance device and method, including the first drag frame of laying plastic film, laying geotextile second drag frame and water spraying conduit valve for watering, second drag frame is equipped with cast-in-place concrete, cast-in-place concrete below is equipped with water spraying position, the rear portion of first drag frame is equipped with first cutting die, and the rear portion of second drag frame is equipped with second cutting die.The application is suitable for mass concrete film laying maintenance device and method, once complete laying film, geotextile and the whole maintenance process of watering, improve work efficiency, save a lot of manpower, improve maintenance and cooling effect, can more quickly realize accurate control, improve mass concrete film laying maintenance efficiency, ensure that cast-in-place mass concrete can be timely laid film and watered and cooled.

This utility model discloses an adaptive protective pad for preventing soil erosion on riverbanks, relating to the field of soil and water protection pad technology. It includes a pad fabric with a sandbag mechanism pressed onto its upper end. A reinforcing mechanism is connected through the sandbag mechanism. This utility model solves the problems of poor adaptability and inconvenience for long-term fixation on riverbanks with high humidity in existing soil and water protection devices. The pad fabric design makes each pad small in size, easy to transport, and highly efficient in emergency situations. Before use, the pad fabric is laid out to adapt to the terrain. The sandbag mechanism and reinforcing mechanism work together to enhance safety and resilience. The separate design of the high-strength geotextile bags provides a channel for the eroding water flow and also increases friction during personnel movement, ensuring high safety.

This utility model relates to the field of permeable pipe technology and discloses an anti-clogging permeable pipe, comprising a permeable pipe body: both ends of the permeable pipe body are equipped with mounting rings, a fine filter layer is sleeved on the outer surface of the permeable pipe body, both ends of the fine filter layer are fixed to the mounting rings, a coarse filter layer is sleeved on the outer surface of the mounting rings, both ends of the coarse filter layer are fixed to the mounting rings, and the fine filter layer is made of polypropylene filter mesh. This anti-clogging permeable pipe, by combining the polypropylene filter mesh and non-woven geotextile into a double-layer filtration structure, can fully utilize the synergistic advantages of the two materials, significantly improving the overall protective performance of the permeable pipe. This clearly defined layered filtration design avoids rapid clogging caused by excessively fine single materials and solves the problem of insufficient interception of fine particles by a single coarse filter material. In addition, the double-layer structure can buffer soil stress, adapt to foundation deformation, and extend the service life of the permeable pipe.

The utility model relates to the technical field of dam building reinforcement construction, in particular to a dam foundation reinforcement protection structure which comprises a female template mechanism, and the female template mechanism is provided with an open type interval opening and a closed type grid opening. According to the arrangement of the sub-template mechanism, the sub-template mechanism is used for laying the sub-template mechanism from top to bottom in a seasonal rainy season area, particularly in a rainy area, the bottom of the sub-template mechanism is placed on the upper edge of a slope surface to be fixed, and then the sub-template mechanism is released along the slope surface, so that elasticity exists among a plurality of trapezoidal splicing parts of the sub-template mechanism; the geotextile is specifically adopted for connection, in this way, the geotextile can be released in the length direction, after a plurality of geotextile bodies draw close, rods are inserted into the round holes for fixation, and the shadow area in the figure is capillary needle-punched geotextile used for drainage.

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 utility model discloses an environment-friendly geotextile laying machine, which relates to the technical field of geotextile laying and comprises a base, one side of the base is fixedly connected with a T-shaped side plate, the front side of the side plate is fixedly connected with a first limiting side plate, the outer end of the inner side of the side plate is fixedly connected with a guide plate, and the surface of the guide plate is fixedly connected with a second limiting side plate. A guide roller is embedded between the first limiting side plate and the second limiting side plate, a mounting seat is fixedly connected to the inner side surface of the first limiting side plate, a telescopic rod and an adjusting plate are fixedly connected to the bottom end of the mounting seat, and a mounting assembly is fixedly connected to the top of the side plate. The effect of driving a guide cylinder to rotate and adjust is achieved through a driving shaft, and the effect of driving a first sliding ring seat and a second sliding ring seat which are arranged in a sliding manner relative to the guide cylinder to slide and adjust is achieved through a hydraulic rod; and the first sliding ring seat and the second sliding ring seat drive the first limiting arm and the second limiting arm which are correspondingly and movably connected to perform lifting adjustment.

The present application relates to the technical field of soil remediation, and discloses a preparation and application method of geotextile for heavy metal contaminated soil remediation or isolation. The present application prepares grafted and modified keratin geotextile through pretreatment, cleaning, geotextile processing and modification treatment. When the grafted and modified keratin geotextile is used for heavy metal contaminated soil remediation, it is laid under or in the contaminated soil, and leaching treatment is used to release heavy metal ions in the soil into liquid phase and be adsorbed and fixed by the grafted and modified keratin geotextile. The present application is efficient, can adsorb and remove heavy metals in the soil within one week, solves the problem of heavy metal migration and diffusion in traditional remediation technology, has no secondary pollution, can guarantee the original physicochemical properties of the soil, uses waste to treat pollution, and is low in cost. In addition, the present application can also be used as an isolation layer to effectively avoid the diffusion of heavy metals in the soil, and has a wide application prospect.

A vertical sidewall effluent dispersal system and method for narrow trench installations. A plurality of soil absorption modules are connected in series. Each system of multiple modules receives a balanced distribution of effluent. The modules comprise a conduit segment and an elongated grid body, both contained within a geotextile envelope. An orifice in the conduit segment emits effluent onto the underlying grid body. The grid body has a first flanking side and an opposite second flanking side. The first flanking side comprises a rectilinear pattern of horizontal steps and vertical dividers. The second flanking side comprises a diamond pattern of diagonally crisscrossing spreader fins. The first and second flanking side overlap at an interior switch-back zone that directs effluent laterally back-and-forth in a downward and longitudinally spreading cascade. Each soil absorption module is isolated from the next adjacent soil absorption module by an earthen barrier of trench backfill.

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.