I. Product introduction Plastic blind ditch, also known as dark ditch, underdrain, etc., the main role is to set the drainage of water. It is used to reduce groundwater pressure, remove excess water, and protect soil and buildings from damage due to infiltration deformation. Widely used in civil engineering, transportation, water conservancy, workers and miners, environmental protection and other construction projects underground drainage works. With the development of polymer materials, foreign countries developed plastic blind ditch in the 1970s. This product overcomes the shortcomings of traditional blind ditch and has the advantages of high open porosity, strong compressive performance, large displacement, and good durability. It has been widely welcomed by the engineering community and has been widely used. In the 1980s, China began to develop a new generation of plastic blind ditch material, and in the early 1990s, it developed products that could be used in practical engineering applications. Our company has developed and produced plastic blind ditch material products that can be used in practical applications and passed the country. And provincial and municipal scientific and technological achievements appraisal. Second, the characteristics of plastic blind ditch material 1. The surface porosity and porosity are as high as 85%, and the drainage and water seepage properties are excellent. 2. The compressive strength can reach several tens of tons per square meter and the pressure resistance is good. 3, good flexibility, strong ability to adapt to soil deformation. 4, acid and alkali corrosion, anti-ultraviolet radiation, anti-aging and good durability. 5, light weight, easy construction. 6. Various shapes and adapt to the construction requirements in a complex environment. 7, filter membrane can be selected, more targeted and economical. The plastic blind ditch itself is formed by the fusion surface of many root-modified plastic filaments with toughness, and there is no possibility of being broken or destroyed. Under the pressure of 250kpa, the voidage of the section is still maintained at more than 60%. Even if a large pressure is applied, there is always a water-passing void, and there are still 10-15% of pores, and the recovery is good. The average surface porosity of plastic blind ditch reaches 90-95%, which is much higher than other similar products. The most effective way is to collect the seepage water in the soil and gather them in time. Plastic blind ditch made of corrosion-resistant fiber filter and modified polyethylene three-dimensional three-dimensional mesh combination, have the advantages of never degrading in the soil, water, and anti-aging formula, can keep the permanent material without change Features. Plastic blind ditch filter can be selected according to different soil conditions, fully meet the needs of the project, and to avoid the single product of the old shortcomings. The proportion of plastic blind ditch is light, on-site construction and installation are very convenient, and the construction efficiency is greatly accelerated. Over the past two decades, a large number of engineering projects at home and abroad have fully demonstrated the reliability of this product. The product was inspected by the Ministry of Communications, the Ministry of Water Resources, and the Nanjing Institute of Hydroelectric Power of the Ministry of Power Industry. The product quality and performance indicators have reached national standards. Some indicators have surpassed Japan, and the price is far lower than Japan's imports. Third, the application of plastic blind ditch (I) Large-area site drainage 1. Large-area land reclamation projects for airports, ports, docks, etc.: In order to facilitate the construction of site soft ground reinforcement projects, it is often necessary to immediately install a blind ditch drainage system after the completion of recharging to accelerate surface drainage and Horizontal drainage measures for reinforcement of soft ground. 2. Various stations (fields), plazas, and ash dumps: The blind ditch drainage system is usually used as a permanent drainage measure. (B) Highways, Highways, Railways 1. Laying plastic blind ditch on the roadbed and shoulders of highways, highways, and railways can collect and drain accumulated water that penetrates the road surface and accelerate drainage of the road surface. 2. Set up plastic blind ditch under the pavement of the expressway to speed up drainage and prevent road surface water from causing harm to roads and vehicles. 3. In areas where there is more rainwater and underground water seepage, blind ditches are usually laid on both sides of the highway and under the highway central isolation zone to reduce the groundwater level. (c) Retaining wall drainage Retaining walls are one of the most widely used buildings in civil engineering, water conservancy, transportation, and mine engineering. Piers, locks, sluice gates, embankments, highways, underground buildings, tunnels, slope protection, etc. are inseparable from retaining walls. No matter what form of retaining wall, the back of the retaining wall is not only subjected to the earth and the loads on it, but also To withstand the pressure of groundwater, in order to promptly remove the groundwater level behind the wall and prevent soil softening, a blind ditch system needs to be installed behind the wall. (4) Drainage of tunnels and underground passages In the development of rock joints, there are fracture zones. When tunnels or underground passages are built in soil layers rich in water seepage or groundwater, they are prone to leakage. For this reason, they are usually required for waterproofing or concrete lining during construction, and There are obvious seepage sites in the stratum, laying plastic blind ditch, forming a network channel for drainage of seepage water, draining the road, and draining the seepage water in time, which can effectively solve the problem of cracks in the concrete lining due to poor handling of concrete structural joint construction joints, etc. Leakage caused by the cause, and to prevent corrosion of reinforced concrete by underground water seepage. (five) slope protection drainage Laying plastic blind ditch in the slope surface to match slope protection. When there is rain and snow, the water is collected and drained by blind ditch in time after seeping into the slope, which can protect the vegetation soil from being washed away, avoid soil erosion, and prevent soil softening and landslides on the slope surface. Especially in places where there is water inflow or piping surges on the slope, plastic blind ditch can be used as a special protection treatment to prevent the further development of water inflow, so as to maintain the stability of the slope. (6) Environmental Engineering 1. Landfill Site Drainage and Exhaust: Landfill of various wastes is the main method of urban waste disposal. If the disposal is not good, the risk to the environment is very great. Plastic blind ditch is a perfect landfill. The important building materials for drainage and exhaust have been widely used abroad. 2. Sewage treatment filter material and microbial attachment base: Specially formulated plastic blind gully material, which can resist acid and alkali and other chemical agents, is placed in a sewage treatment tank, has a lighter specific gravity than water, and has a good affinity with microorganisms. , It is very ideal filter material and biological attachment base. (VII) Drainage by decompression method The decompression method is a new technique popularized in the 1980s. The method is to lay a plastic blind ditch (full-filled or partitioned paving) on ​​the part of the bottom of the building and the side wall, and to cover the earthwork cloth, and to connect the water collection pipe. The infiltrating water is pumped into the water in the building and the water is drained by the water pump. Water is also available for buildings. As the underground seepage water is quickly eliminated, the groundwater level is reduced, the buoyancy and water pressure of the underground water structure are reduced, and the safety and stability of the building are effectively improved. (viii) House garden drainage A layer of plastic blind gauze is laid on the concrete surface of the house garden, a layer of geotextile is laid, and then a layer of soil is laid on the geotextile to plant the flowers and trees on it to form a house garden. In the event of rain seeping into the soil, the waves retain the particles of the soil and drain away excess water. The plants will not rot and the soil will not be lost. (9) Drainage of playgrounds and golf courses 1. In track and field, football stadiums and other venues: Drainage and irrigation plastic blind ditch materials are laid under the turf to form a drainage network system. In the snowfall, the water seeping into the ground can be drained in time to prevent the cement in the ground area. In the dry season, sub-irrigation can be carried out. 2. Golf course: Due to the high requirements on the site, a perfect blind ditch system is also needed to ensure the functions of catchment, drainage, diversion, irrigation and slope protection. (10) Dike construction and embankment engineering 1. Drainage of the dam body and the foot of the dam: In the water conservancy project, a blind ditch drainage system can usually be installed at the dam body and the foot of the dam to collect the seepage water and eliminate the dam body, so as to avoid the damage caused by water seepage to the safety of the dam. 2. Relief wells: In order to prevent the occurrence of piping failures in the dangerous sections of the embankment project, decompression wells (and observing actions) are often installed at the location where the embankment is expected to be likely to have a piping surge to monitor the changes in groundwater pressure and release the seepage pressure after the balance embankment. To protect the safety of the embankment. (11) Underground irrigation drainage system for agriculture and gardening Plastic blind gutters are laid below the roots of crops to form irrigation nets. If plastic films are laid under plastic blind gutters, water penetration can be prevented. Under the capillary action, evenly and slowly plunging into the roots of crops, the evaporation of water in the atmosphere is minimal, which is the most water-saving irrigation method. When rain and snow collect water, the system can be drained and it can serve two purposes. Disposable Forks,Disposable Wooden Fork,Disposable Flatware Wooden Fork,Flatware Wooden Fork Dalian Yongtailong Wood Industry Co.,Ltd , https://www.ytldisposablegoods.com