1170 results about "Geotextile" patented technology

A geotextile fabric includes a first weft yarn woven in a weft direction and a first warp yarn and a second warp yarn woven in a warp direction, the first warp yarn being a wicking yarn, and the second warp yarn being a wicking yarn or a non-wicking yarn, the first warp yarn forming a first loop that is woven through and extends from a first face of the woven geosynthetic fabric and across at least two of the first weft yarns to form a first gap between the first loop and first the face of the woven geosynthetic fabric.

The invention provides a composite tension sand blocking and silt reducing facility and method.The facility is composed of one or more units, each unit comprises a floating body, a composite tension curtain and an anchor point located at the bottom of a water body, one end of the composite tension curtain is connected to the floating body, and the other end of the composite tension curtain is connected to the anchor point; the composite tension curtain forms a sand blocking surface in the water between the bottom of the water body and the floating body by virtue of the buoyancy of the floating body, and the floating body is positioned on the water surface or suspended in the water; the composite tension curtain is formed by sewing two layers of geotechnical cloth together, a plurality of steel cables are inserted between the two layers of geotechnical cloth, a composite tension structure is formed to serve as a sand blocking and silt reducing curtain face, and main water flow force and wave force are borne by the steel cables. The flexible sand blocking curtain structure facility is economical, convenient to construct, suitable for large flow velocity and wave conditions and capable of blocking sand and reducing silt.

The invention discloses a testing device and a testing method for a permeability coefficient characteristic curve of wicking geotextile, and belongs to the technical field of permeability coefficient testing. A to-be-tested wicking geotextile and a soil layer are laid between an upper plate body and a lower plate body of a test unit of the test device; the two sealing covers are located at the two ends of the upper plate body and the two ends of the lower plate body respectively. Each of the first hollow column and the second hollow column comprises a hollow column section positioned above the upper plate body and below the lower plate body, the hollow column sections distributed up and down are communicated with a gap between the upper plate body and the lower plate body, and each hollow column section is filled with a soil body and forms a test soil column; the load output end of the load applying unit is used for applying a vertical load to the top of the test soil column and the upper plate body. The test device disclosed by the invention can really simulate the occurrence condition of the wicking geotechnical cloth in the roadbed engineering; the testing method based on the testing device can rapidly test the permeability coefficient of the wicking geotextile, and a characteristic curve of the permeability coefficient of the wicking geotextile is obtained.

The embodiment of the invention discloses a geotextile laying speed and geotextile laying ship moving speed control method. The method comprises the steps that the ship speed and environment data of a geotextile laying ship are obtained in real time; determining an arrangement speed based on the ship speed, the environmental data and a preset speed matching calculation formula; and generating a control signal of a driving device of the arrangement equipment based on the arrangement speed, and controlling the equipment speed of the arrangement equipment according to the control signal. The arrangement speed matched with the ship speed is calculated in real time, so that the central controller can adjust the speed of the arrangement equipment in real time according to the arrangement speed, changes of different sea conditions, ship body states and the like are flexibly coped, the system adapts to complex and changeable marine environments, the speed of the arrangement equipment is matched with the moving speed of the arrangement ship, and the arrangement efficiency is improved. The situation of operation interruption caused by speed mismatching is avoided, and the continuity and efficiency of arrangement operation are improved.

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 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 utility model provides a superhigh reinforced body preloading structure. The treatment structure comprises a reinforced body working cushion layer, a water separation and drainage reinforced layer and an ultrahigh reinforced body stacking structure layer. The reinforced body working cushion layer comprises machine-made sand and an A-type geocell, the water insulation and drainage reinforced body structure comprises non-woven geotextile, a seepage insulation film and multiple layers of composite drainage grids, the composite drainage grids are adopted to replace a medium-coarse sand drainage layer, a vertical drainage plate is directly connected with the middle layer of composite drainage grids, and the vertical drainage plate is directly connected with the middle layer of composite drainage grids. The ultrahigh reinforced body stacking structure layer comprises non-woven geotextile, construction waste, B-type geocells and mineral powder. The foundation treatment effect is good, the sand consumption is reduced, the manufacturing cost is saved, design and engineering application are facilitated, and the engineering application prospect is very wide.

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 belongs to the technical field of crossing of artificial intelligence and computational mechanics, and particularly relates to an artificial intelligence-based MPM simulation method and system for a mold bag sand cofferdam, a three-dimensional simulation system of the mold bag sand cofferdam is constructed in combination with an MPM method, and the penetration state of sand and geotechnical cloth is detected in an accelerated manner by utilizing a penetration tracking algorithm and spatial Hash. An artificial intelligence algorithm is introduced, a reward function is designed with minimum penetration depth and penetration times as targets, penetration prediction of MPM particles is driven, the speed and stress of the MPM particles are further dynamically regulated and controlled on the basis of a predicted contact model and the artificial intelligence algorithm, penetration is prevented, numerical stability is ensured, and the prediction accuracy of the MPM particles is improved. The calculation precision is improved by adopting implicit integration and gradient descent methods; and bidirectional coupling of the sand and the geotechnical cloth is realized through a visualization module. The problems that in a traditional method, coupling simulation of sandy soil and a flexible structure is low in efficiency, easy to penetrate, unstable in numerical value and the like are solved, and the accuracy and reliability of simulation analysis of the mold bag sand cofferdam structure under the complex working condition are remarkably improved.

The invention discloses an expansive soil roadbed drainage anti-seepage structure and a construction method, and relates to the technical field of expansive soil roadbed construction.The expansive soil roadbed drainage anti-seepage structure comprises a roadbed body and geotechnical cloth and further comprises a laying mechanism arranged on a moving vehicle and used for laying the geotechnical cloth, and the laying mechanism comprises an L-shaped plate slidably connected to the moving vehicle; the end, away from the moving trolley, of the L-shaped plate is connected with a U-shaped frame, the U-shaped frame is rotationally connected with a rotating shaft, the geotechnical cloth is wound around the rotating shaft, and a first motor used for driving the rotating shaft to rotate is arranged on one side of the U-shaped frame. According to the expansive soil roadbed drainage anti-seepage structure and the construction method, through the arrangement of the laying mechanism, an operator does not need to conduct manual laying operation on the inclined side wall of the side ditch, then the safety of geotechnical cloth laying is improved, and meanwhile under the cooperation effect of the pressing assembly and the driving assembly, the anti-seepage performance of the side ditch is improved.

The invention provides a phase change-moisture absorption and drainage composite roadbed structure in a seasonal frozen region and an intelligent regulation and control method, and relates to the technical field of roadbed design and renovation. The roadbed structure is characterized in that a plurality of gradient phase change material layers are arranged on the top surface of a roadbed surface layer; the multi-layer gradient phase change material layer, the high moisture absorption and drainage geotextile layer and the drainage pipe system are arranged from top to bottom; the phase change temperature intervals and the phase change latent heat of the phase change layers in the multiple gradient phase change material layers are different; the high moisture absorption and drainage geotextile layer is used for guiding water in the soil body into the drainage pipe system; the drainage pipe system is of a porous structure with the inclination angle within the set angle range and is used for guiding water in the soil into the drainage ditch. And the intelligent regulation and control system is used for dynamically regulating the thermal resistance of each phase change layer and the opening degree of the drainage pipe. According to the invention, the time of the roadbed in a relatively stable physical state can be prolonged, so that the purpose of preventing and treating winter frost heaving, frost boiling and mud rising in a spring melting period and other diseases caused by temperature change of the roadbed in severe cold areas is achieved.

The invention relates to a construction method for a roadbed penetrating through a V-shaped valley area, and belongs to the technical field of foundation engineering and foundation treatment. The problems of low foundation drainage efficiency, filling side slope instability and differential settlement control in V-shaped valley roadbed construction are solved. According to the technical scheme, a groove is dug along the bottom of a valley, a gravel drainage blind ditch wrapped by permeable geotextile is laid, and a foundation drainage system is formed; during layered filling, a vibratory roller with a piezoelectric sensor embedded into a steel wheel is adopted; after every two layers are filled, one-way geogrids are laid along the slope and vertically anchored into the compaction layer through U-shaped anchoring parts; a transverse drainage pipe is pre-buried when filling is conducted to a foundation bearing capacity sudden change point threshold value; and after filling is completed, a settlement monitoring array is arranged. According to the method, through system integration of foundation drainage structure optimization, filling body intelligent compaction and differential settlement dynamic treatment, the bearing stability of the fill roadbed under the complex terrain is remarkably improved, and the method is suitable for foundation construction and disaster prevention and control of the V-shaped canyon section of the mountain road.

The invention discloses a quick blocking system for a dike breach, which belongs to the field of hydraulic engineering equipment and comprises a pushing support fixed on a dike through a positioning anchor rod and a fixed arm slidably arranged along the length direction of the dike, and the pushing support is connected with the fixed arm through hydraulic pushing translation equipment. One end of each fixed arm extends to the position above the dike breach, the two fixed arms are parallel to each other, a longitudinal supporting arm is arranged at the end, away from the pushing support, of each fixed arm, the longitudinal supporting arms are arranged between the two fixed arms, and positioning guide seats are arranged on the longitudinal supporting arms and the fixed arms correspondingly; the positioning guide seats are used for positioning the blocking anchor rods, the blocking anchor rods are downwards anchored into a foundation of the embankment breach along the positioning guide seats, and the breach is blocked by throwing geotechnical cloth sandbags or large stones or steel mesh gabions into an area formed by the blocking anchor rods. The problem that when a blocking medium is directly fed into the breach, the blocking medium is not stable under the impact of water flow and is directly washed away is solved.

The invention discloses a three-dimensional visual monitoring system for a geotextile laying ship, and the system comprises a data transmission module which is used for collecting and storing the monitoring data of the geotextile laying ship in real time through a sensor; the somatosensory module is used for capturing limb actions of the user through various hardware devices and recognizing user voice; the virtual environment generation module is used for receiving the transmission data of the data transmission module and the somatosensory module and constructing a virtual arrangement environment highly similar to the operation site of the arrangement ship; the user interaction monitoring module is used for enabling monitoring personnel to control the virtual arrangement environment, check all angles and details of the arrangement ship, judge whether the arrangement ship is abnormal or not and record the abnormality on the basis of the virtual environment generation module; and the exception handling module is used for recording and reporting exception information when the user interaction monitoring module inspects the exception. According to the invention, visual, efficient and safe three-dimensional visual monitoring experience is provided for arrangement construction.

The invention discloses a river and lake sludge dewatering and curing ecological bank protection process. Ecological bank protection construction is achieved through in-situ resourceful treatment of sludge. The process comprises the following steps: firstly, pressing natural wood piles into the bottom of a bank slope to form a comb-shaped anti-sliding bent frame, and paving high-strength permeable geotextile pipe bags between the piles and the bank slope; bottom mud is extracted by adopting mud suction equipment, is modified by a flocculating agent and then is injected into a tubular bag in a layered manner, and gravity dehydration is completed by utilizing the permeable characteristic of tubular bag fabric; the tops of the pipe bags are backfilled with stacking materials for graded stacking, and solidification is accelerated through external pressurization to form a stable bank protection filling body; and finally, the surface layer is covered with planting soil, moisture-proof plants are planted, and the composite revetment with the permeation drainage function and the ecological function is constructed. Compared with a traditional technology, the technology effectively solves the problems of bottom mud outward transportation pollution and resource waste through triple synergy of geotextile tube bag gravity dehydration, natural timber pile stability enhancement, building body strength improvement through graded stacking and loading and the like, and the formed revetment has ecological restoration and landscape functions. The method is suitable for ecological restoration of rivers and lakes, wetland reconstruction and waterfront environment treatment, and has the comprehensive advantages of convenience in construction, environmental friendliness, economy and high efficiency.

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-crack construction method for a concrete pavement. The anti-crack construction method comprises the steps that a high-pressure water gun with the pressure ranging from 15 MPa to 18 MPa is adopted to conduct scouring on the surface of a roadbed to form latticed grooves with the depth ranging from 3 mm to 5 mm; laying a double-layer isolating layer composed of a polyethylene film and polypropylene geotechnical cloth, and coating an organic silicon interface agent of 1-1.5 mm in the middle; erecting a three-dimensional steel reinforcement framework; during layered pouring, the thickness of lower-layer concrete is 60 + / -2% of the total thickness, inserting quincunx PVC exhaust pipes with the diameter of 25mm, and controlling the temperature difference between the upper-layer concrete and the lower-layer concrete to be less than or equal to 5 When the concrete strength reaches 5MPa-7MPa, the cutting depth of the shrinkage joint is 1 / 4-1 / 3 of the total thickness, and the length difference of the adjacent sections is less than or equal to 10%. The method can significantly improve the crack resistance of the pavement, and is suitable for concrete pavement projects such as highways and municipal roads.

The utility model relates to a soil pressure gauge embedding structure for short pipe replacement construction, which comprises a probe hole arranged at the top and the side edge of a pipeline, a paddle binding bag arranged at the bottom of the probe hole, slurry in a soft plastic state filled in the paddle binding bag, and a soil pressure gauge arranged in the paddle binding bag and perpendicular to the radial direction of the pipeline. The soil pressure gauges in the probe holes right above the pipeline are horizontally arranged, and the soil pressure gauges in the probe holes on the two sides of the pipeline are laterally arranged, so that the formation pressure change can be effectively conducted to the soil pressure gauges, and the accuracy of monitoring results of the soil pressure gauges is ensured; the bottom of the water pumping pipe is wrapped with geotechnical cloth to prevent the sand from entering the water pumping pipe and blocking the water pumping pipe; the top of the water pumping hole is backfilled with clay to prevent surface water from entering a soil layer around the pipeline through the water pumping hole; the bearing capacity of the soil layer is reduced; and the pipeline structure safety is influenced.

The invention discloses biological self-repairing geotechnical cloth suitable for a soil slope and a construction method.The biological self-repairing geotechnical cloth is fixed to the soil slope surface through anchor rods and comprises two layers of biological composite fiber geotechnical cloth arranged up and down and a layer of polypropylene fiber geotechnical cloth arranged between the two layers of biological composite fiber geotechnical cloth; the biological self-repairing geotextile is formed by connecting biological composite fiber geotextile, polypropylene fiber geotextile and biological composite fiber geotextile from top to bottom in sequence through needling. According to the invention, the biological composite fiber geotextile, the polypropylene fiber geotextile and the biological composite fiber geotextile are connected into the biological self-repairing geotextile by adopting a needling technology; batch production of the biological self-repairing composite geotextile can be realized, the production cost is reduced, and the production efficiency is improved; and the biological self-repairing geotechnical cloth is fixed on the soil slope surface in a step shape, so that the soil slope in the application environment can be prevented from sliding and eroding.

The utility model discloses a dike ecological anti-seepage panel structure which comprises geotechnical cloth, a graded broken stone cushion layer, a plain concrete cushion layer, a reinforced concrete anti-seepage panel and a reinforced concrete wave wall. The geotechnical cloth, the graded broken stone cushion layer, the plain concrete cushion layer and the reinforced concrete anti-seepage panel are sequentially arranged on the surface-cleaned current embankment body from bottom to top; the reinforced concrete anti-seepage panel is divided into a horizontal section reinforced concrete anti-seepage panel and a slope section reinforced concrete anti-seepage panel, horizontal and longitudinal parting seams are arranged between the horizontal section reinforced concrete anti-seepage panel and the slope section reinforced concrete anti-seepage panel, and water stop copper sheets are arranged between the parting seams; the top of the reinforced concrete anti-seepage panel is connected with the reinforced concrete wave wall, and a water stop copper sheet is arranged between the top of the reinforced concrete anti-seepage panel and the reinforced concrete wave wall; the horizontal section reinforced concrete anti-seepage panel is provided with a tooth wall extending into the foundation; the reinforced concrete anti-seepage panel is provided with a notch, planting soil is laid on the notch, and green plants are planted on the notch for slope protection. The anti-seepage ecological landscape structure has the advantages of seepage prevention, ecological landscape, strong structural durability, and land and investment saving.

The invention provides an ecological reinforcing structure of a river channel grouted rubble retaining wall revetment, the ecological reinforcing structure takes double-row pile foundations and a planting platform as a core design concept, the first pile foundation is located at the foot of an existing grouted rubble retaining wall, the top of the pile foundation is provided with a reinforced concrete guide beam, and the second pile foundation is located at the foot of the existing grouted rubble retaining wall; the newly-built guide beam is connected with an existing grouted rubble retaining wall base into a whole through embedded steel bars, the integrity and the anti-sliding capacity of the retaining wall are remarkably enhanced, and base emptying and wall body deformation are effectively restrained. The second pile foundation structure is a planting pile and backfill soil behind the planting pile to construct an aquatic plant planting platform, geotechnical cloth is laid between the planting pile and the backfill soil, soil particle loss can be prevented, water is allowed to freely permeate, and normal exchange between water and soil is maintained. The stability of an existing retaining wall is guaranteed, an aquatic plant planting platform is constructed, the whole reinforcing system is hidden under the normal water level, the natural form of a river channel is maintained, and deep integration of ecology and safety is achieved.

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.

The invention discloses natural fiber geotextile and a preparation method thereof, and relates to the field of environment-friendly materials.The preparation method comprises the following steps that natural fiber fabric is placed in chemical treatment liquid to be subjected to dipping-compression roller treatment to obtain treated fabric, and the treated fabric is subjected to irradiation treatment; the chemical treatment liquid is prepared by mixing asphalt emulsion, bisphenol A epoxy resin, unsaturated polyester resin, a curing agent and an initiator. The asphalt emulsion, bisphenol A epoxy resin and unsaturated polyester resin are used for filling pores of the natural fiber fabric, cross-linking is carried out to form a three-dimensional cross-linked network, and irradiation treatment is carried out. Under the comprehensive action, the mechanical strength of the natural fiber geotextile is improved, the moisture absorption rate is reduced, and the antibacterial rate is improved.

The invention relates to the field of roadbed engineering design, in particular to SiO2 aerogel composite geotechnical cloth for a road and a manufacturing method. The composite geotechnical cloth comprises a geotechnical cloth base layer and SiO2 aerogel layers, and the SiO2 aerogel layers are located on the upper face and the lower face or the single face of the geotechnical cloth base layer. The aerogel and the geotechnical cloth are combined, the novel aerogel composite geotechnical cloth can be formed, the material not only has the isolation and reinforcement functions of traditional geotechnical cloth, but also has the functions of heat preservation, heat insulation and seepage prevention, the structural integrity and the mechanical property of the aerogel can be spontaneously recovered in the repair cycle through the self-repair function of the aerogel, and the aerogel composite geotechnical cloth can be used as a composite material. The service life can be prolonged and the maintenance cost is reduced.

A system suitable for protecting shoreline or other target area / zone includes a geotextile sheet having an upper edge and a lower edge, the upper edge including a first channel through which a first draw cord is threaded, and the lower edge including a second channel through which a second draw cord is threaded. A flap has a lower portion affixed to the geotextile sheet proximal to its lower edge. The flap can further include un upper portion affixed to the geotextile sheet proximal to its upper edge, where the flap and the geotextile sheet form an enclosure.

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 an efficient maintenance method for a cement stabilized macadam base, and relates to the technical field of buildings. According to the efficient maintenance method for the cement stabilized macadam base, the water-retaining property of the covering device is guaranteed through the geotechnical cloth water-retaining layer, so that the covering object is better kept wet in the maintenance process; the cement stabilized macadam base is well prevented from being influenced by water shortage during maintenance due to the toughness and the water conveying capacity of the polyethylene water distribution pipe; the reserved connecting port of the water distribution pipe has the effects of connecting a water supply pipe and connecting a plurality of covering device units, sufficient water maintenance of a cement stabilized macadam base layer in a covering area is guaranteed as far as possible, and meanwhile, the performance of convenient disassembly and assembly provides the effects of being suitable for maintenance of areas with any area and recycling of the device during maintenance of the cement stabilized macadam. Due to the water sealing performance of the polyethylene water sealing layer and the water supplementing holes formed in the water distribution pipe, only a small amount of water in the cement stabilized macadam base is evaporated.

The invention discloses an intelligent roadbed soil moisture content self-adaptive control system and method based on hydrothermal coupling. Comprising a vegetation layer, a silt layer, a wicking geotextile layer and a gravel layer which are sequentially laid from top to bottom; the roadbed inner wicking geotextile layer is embedded in the lower part of the roadbed, and the roadbed inner wicking geotextile layer is connected with the wicking geotextile layer; the part, paved in the drying chamber, of the wicking geotextile layer forms a drying part, the drying module conducts drying treatment on the drying part through an air pump and a heater, and the temperature and humidity of the drying part are monitored in real time through an air temperature and humidity sensor; the soil body temperature and humidity sensors are arranged above the roadbed inner core geotextile layer; and the solar panel is used for supplying power to the self-adaptive control system. The device is suitable for various climates and soil conditions, and external moisture can be prevented from entering the roadbed in rainy weather.