The geotextile (large grain trails, distribution, density, and consistency) of building materials having different physical properties (such as soil and sand, sand and gravel, soil and concrete, etc.) to isolate the function of geotextile, a role. Isolated by . Make a variety of materials between the two is not lost, not mixed, maintaining the overall structure and function of materials, so that the load bearing capacity of the structure to strengthen the two. Filter inflow of coarse material from fine soil when the soil material, the use of acupuncture geotextile good air and water permeability so that water flows through, and effective closure of soil particles, sand, small stones, etc., in order to maintain a stable soil and water engineering. 3. Drainage geotextile material is good water conductivity, it can form drainage channels in the soil inside the body, the inner structure of the soil excess liquid and gas efflux. 4 acupuncture geotextile reinforced soil enhanced tensile strength and resistance to deformation, increase the stability of the building structure in order to improve soil quality. 5. Protection to the concentrated stress diffusion, transfer, or decomposition, to prevent the destruction by external force body diagram. 6. Closed geotextile and other materials (primarily asphalt or plastic film) with the formation of an impermeable barrier in the soil. (For road resurfacing repair, etc.) geotextile uses: 1, hydraulic: seawalls, river bank, Hudi standard works; reservoir reinforcement project; reclamation project; flood control. 2, road and rail project: Soft Foundation Treatment; slope protection; pavement cracks in the structure of the anti-reflection layer; drainage system; greenbelt. 3, electrical engineering: basic engineering of nuclear power plants; thermal power ash dam project; Hydropower Project. 4, Port Channel Project: Port staple fiber geotextiles index (GB/T17638-1998) Item Unit Unit Area g/m2 100 150 200 250 300 350 400 450 500 600 800 1000 Thickness mm ≥ 0.9 1.3 1.7 2.1 2.4 2.7 3.0 3.3 3.6 4.1 5.0 5.9 Tensile strength KN / m ≥ 2.5 4.5 6.5 8.0 9.5 11.0 12.5 14.0 16.0 19.0 25.0 28.0 Elongation% ≥ 25 ~ 100 CBR bursting strength KN ≥ 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.2 4.0 4.5 Equivalent Aperture (O90) mm 0.07 ~ 0.2 vertical permeability coefficient cm / s KX (10-9 ~ 10-12) K = 1.0 ~ 9.9 tearing strength KN ≥ 0.08 0.12 0.16 0.20 0.24 0.28 0.33 0.38 0.42 0.46 0.60 0.70 laying of geotextile Methods: Human rolling shop; cloth to smooth and proper deformed left margin. Filament or staple fiber geotextile installation usually lap, sewing and welding in several ways. Sealing and is generally the width of 0.1m or more, than the overlapping width is generally 0.2M. Possible long-term exposure of geotextile should welding or stitching. All stitching must be continuous (e.g., point stitch is not allowed). Before overlap geotextile must overlap at least 150mm. The minimum distance from the needle selvage (material exposed edges) is at least 25mm. Geotextile sewn seams and most include a line-shaped wire locking chain stitch. Line should be the minimum for suture tension than 60N resin material, and resistance to chemical corrosion and UV resistance and geotextile comparable or exceeded. On any sewn geotextile "drain pin" must be re-stitched in places affected. Must take appropriate measures to avoid after installation, soil, particulate matter or foreign substances into the geotextile layer. Cloth according to the terrain and the use of overlapping functions can be divided into natural lap, stitched or welded. In construction, the use of geotextile geomembrane above natural lap, upper geotextile geomembrane seam or using hot air welding. Hot air welding is the first filament geotextile connection method, which uses hot air gun to connect two pieces of cloth instant high heat to melt part of the state to achieve, and immediately use some force to make it firmly bonded together . In the wet (rain and snow) weather can be hot sticky connections, the geotextile should take another approach a suture ligation method, which uses special sewing machine stitching wire connections, and the use of anti-chemical UV sutures. Suture minimum width 10cm, the minimum width of the overlapping nature of 20cm, the minimum width of the hot air welding 20cm. For the seam, to adopt the same quality and geotextile sutures, sutures to be used against chemical damage and UV radiation stronger material. After completion of the laying of geotextile-site supervision engineer approved by the laying of the geomembrane, geotextile geomembrane geomembrane by the Party in ibid supervision after laying approved geotextile membrane in the upper and lower parts of the anchoring groove should have with geotextile membrane with embedded anchor slot. Basic requirements laid geotextile: a, seams must intersect with the slope line; and toe balancing or where there may be stress from the horizontal joints must be greater than 1.5m. b, on the slope of the geotextile anchored at one end, then roll down the slope must be maintained to ensure the geotextile taut state. c, are subject to all of the geotextile sand bags to suppress, and sand bags will be used to keep the top layer of material laid during laying. Geotextile Installation note: geotextiles can only be cut with a knife geotextiles (hooks), such as cutting in the venue, other materials required to take special protective measures to prevent because the cutting geotextiles and inflicting unnecessary damage; laying of geotextile, we must take all necessary measures to prevent material damage to the floor below; while laying geotextile, care must be taken not to let the stones, and so have a lot of dust or moisture may damage the geotextile, it is possible blocked drains or filters, or is likely to create difficulties for the next connection the following substances into the geotextile or geotextile; After the installation, all the geotextile surface damage visually to make sure that all landowners for the markers and repair, paved surface is not possible to determine the damage caused by foreign substances, such as broken needles and other foreign matter; connection geotextile must comply with the following requirements: Under normal circumstances, can not have the level of connection (the connection is not required contours along the slope on the slope intersect), except where the patch. Such as the use of sutures, sutures with geotextile material shall be the same as or more than the material, sutures are required to prevent the timber holding the chemical UV. Sutures and geotextile should be obvious color difference, in order to check. Special attention to suture the installation to ensure that no dirt or gravel covered with gravel into the middle layer of geotextile. Geotextile damage and repair in the suture junction, subject to re-suture repair, and to ensure that the end portion of the jumper has been re-stitched in all regions, in addition to lots of rocky slopes, holes or torn parts should be the same patch of geotextile material suture repair in the bottom of the landfill, if the gap is longer than the web width of 10%, the damaged portion shall be cut off, and then connect the two parts of the geotextile geotextile bottom protection of water into the accounting methods. Liushi hug when using the car to occupy the construction, before accounting for the body to increase the flow rate, sediment-carrying capacity increased, representing a serious precursor river erosion, increasing the difficulty of construction, increasing the use of materials engineering, account for body parts covered with geotextile to solve accounting body scour the river, representing the body of grasping the bottom water blocking played a role, with a geotextile cover your occupied the site of the river, so the water flows over the geotextile, the river is not deformed due to water erosion, which can be Material things can be saved in advance to occupy the time, decided dongbatou control under the guidance of the extension 13 into the water dam construction accounted for using geotextile bottom protection. Bottom protection geotextile production: first crop will become tied geotextile, a length of 26m, width geotextile 3.8m, cut 7, suture using suture, stitch width and amplitude width of 15cm, with a nylon suture 3, at a 15cm, 10cm at 1, 5cm at one, the entire width of the suture after a good geotextile is 24.8m. In a good piece of suture geotextile a folded 50cm, folded two, leaving 1m each rope is not tied with a suture, 1m outside sewn into the bag-like, with a tape measure and chalk line, 50cm intervals, manually 50cm grid suture left port to prepare for loading gravel. After post-production destined for the construction site collapsed. Throwing cage point: 20t iron required only three boats, boat equipment strapped each lead wire cage mounted two stone, two rescue rope will be tied with chains on the lead wire cage with a wire cage three boats will throw to account for the upstream body 15m office, parallel accounting bodies dumped in rows, spaced 25m, in order to locate the vessel and fixed geotextiles used. Also in the lower corner of each geotextile throw a wire cage, so that the water after geotextile positioning. Geotextile placed on board: the suture good geotextile on the ground dam shore spread, the rope tied good, the upstream geotextile bags have an edge chain rope tied three, two corners of each bolt a middle tied one, two corners of each bolt a downstream must be tied securely. After the rope tied, never side began to roll the bag, and roll into strips, be sure to roll out of the bag sewn to prepare equipment for rubble stone pillow with. The rolled geotextile placed on board, with good stitching ready gravel into the geotextile bag, the bag stitched with artificial tight. Vessel Positioning: The cast of lead wire cage with each vessel positioning the boat dumped in the whole fitness fixed position, the lead wire rope from the rope on the cage bottom boat with geotextile on the phase and do all the preparatory work. Dumped geotextile: upstream water depth 3m, representing precursor depth 6m, a flow rate of 1.5m / s, Jiahetan flow 570m3 / s. Commander's order, all persons on board while holding a pillow rubble dumped in the river upstream side of a gravel pillow geotextile fall forward, first sinking river, with the river Wembley momentum geotextile rolls rapidly, due to by hydrodynamic pressure effect of geotextile slowly paste it into the river, keep following the river into the accounting body not being washed. The whole process: the vessel in place - Exhibition geotextile Tether - geotextile rolls boat loaded gravel - dumping vessel positioning - start dumping - gravel pillow into the water - into the water geotextile all time with 57 minutes. Be accounted for body parts of the river are protected from water can flow through the geotextile above, and the river will not be affected by erosion. Staple acupuncture geotextile Specifications: 100g/m2-1500g/m2 Features: good flexibility, good permeability, filtration isolation, and convenient construction. Use role: for roads, railways, dams, reclamation projects such as filter, isolation drainage, conservation. Packing: W 2-6m, length 50-100m (or by user request) technical characteristics of a geotextile, high strength, due to the use of plastic flat, in the dry state can maintain adequate strength and elongation. 2, corrosion, at different pH of the soil and water can be permanently resistant to corrosion. 3, permeability Fortunately there is a gap between the flat yarn, it has good water permeability. 4, anti-microbial resistance to microorganisms, insects are not compromised. 5, construction convenient, because the material is light, soft, so transporting, laying, to facilitate construction. 6, the complete specifications: width up to 6 m. Is currently the widest product, mass per unit area :100-600g / ㎡. Role: high breaking strength up to 20KN / m or more, good creep resistance, corrosion resistance. Used in water conservancy, dams, roads, airports, construction, environmental engineering, and can act as a filter, drainage, isolation, protection, reinforcement effect. Polyester spunbond nonwoven production acupuncture high speed, low raw material consumption, small energy saving equipment footprint, compact structure, in recent years a great staple fiber geotextile gradually replaced trend. The reporter learned from the application sector, polyester spunbond needle with high strength and geotextile reinforcement, isolation, filtering, drainage and seepage features, can be widely used in water conservancy construction, road construction, building waterproofing facilities, is a species better user acceptance of the superiority of geosynthetic products. Highway Maintenance geotextile 500g / 350g reinforced geotextile / GB geotextile Price Also known as geotextile fabric, which is made of synthetic fibers woven by needle or permeable geosynthetics. Geotextile into woven geotextiles and nonwoven geotextiles. Geotextile with excellent filtration, isolation, reinforced protective effect, high tensile strength, good permeability, high temperature, anti-freeze, anti-aging, corrosion-resistant. Conservation geotextile / reinforced geotextile / GB geotextile geotextiles in the role of project A, filtration effect: do dams, canals, coastal, concrete slope, retaining walls and other filter layer in preventing soil while particles by allowing water or gas to pass freely. B, isolation: do railroad ballast and subgrade, embankment and soft ground, the surface layer and the foundation of the airport and the parking lot, isolate different damming material between two different sediment particle size, and the foundation stone or isolated from other buildings. C, reinforcement effect: for road, railway, dam, breakwater, airport, backfill retaining walls, slope and other projects, the distribution of stress in soil, prevent soil sway and improve soil stability. D, protective effect: for the embankment to prevent wind erosion wave of rain, and for revetment, bottom protection, erosion control high strength geotextile reinforcement warp gluten was grid-like, not only increasing the tensile woven strength, and excellent retention of the nonwoven fabric filtration function. High strength and warp woven geotextile reinforced nonwoven composite fabric feature comparison woven composite nonwovens Although acupuncture has a certain tensile strength and maintaining the filtration function, but non-woven composite fabric is woven Non-woven and woven composite made of acupuncture, acupuncture complex process due to reduced fiber strength composite fabric stabbed, and the complex is easy to peel and impact of project quality