The difference between geomembrane and composite geomembrane
RELEASE TIME :
2022-01-21 12:03
The anti-seepage layout of geomembrane is roughly divided into two types, one is laid on the upstream surface of the dam, including the seepage of the reservoir, and the other is laid in the middle of the dam, used as an anti-insect core wall, composite geomembrane It is made of hot pressing of earthwork membrane and earthwork fabric. In actual construction, a large number of composite geomembranes in the form of two thousand one membranes are used. The earthwork fabrics on both sides can avoid damage such as penetrating geomembrane, which is better than a single geomembrane. The membrane has greater tensile strength, etc., so let's understand the difference between geomembrane and composite geomembrane!
Geomembranes are especially valued by water conservancy projects in engineering circles because of their good performance in preventing penetration and adapting to deformation. Continuous exploration of composite construction technology in reservoir anti-seepage and reinforcement projects can improve the anti-seepage performance of reservoirs and reduce the cost of reservoir anti-seepage and reinforcement. This paper comprehensively discusses the composite application requirements in the reservoir anti-seepage reinforcement project, discusses the composite construction technology in the reservoir anti-seepage reinforcement project, analyzes the composite quality management in the reservoir anti-seepage reinforcement project, and provides reference and reference for relevant personnel.
Composed of polymer materials, it is often used in the construction of dams, drainage, ditches and other projects. The application in water conservancy anti-seepage engineering is discussed. Landfills generally isolate harmful substances on the slope of the landfill to avoid polluting the surrounding environment. The landfill waste and soil layer have shear stress along the length and will be displaced, and the interior can bear the tension. For safe use, analyze the pulling force and displacement. On the basis of adjusting the stress-strain of the slope material, the differential governing equation of the shear stress of the substratum and soil contact surface is deduced, and then the influencing tension and important parameters are analyzed.
Composite geomembrane is an impermeable geotechnical permeable material, mainly composed of geomembrane and geotextile, which has drainage, protection, anti-seepage and waterproof functions. It is mostly used in water conservancy and hydropower projects such as construction of cofferdams, low earth-rock dams, and channels. field. Generally speaking, the use of composite geomembrane for earth-rock dams can improve the deformation and stress of earth-rock dams, improve the seepage stability of dams, and achieve good anti-seepage effects, but the requirements for installation and construction are high, and quality control work should be done well.
Composite anti-seepage technology has been widely used in water conservancy and hydropower projects, embankment canal engineering, reservoir reinforcement and anti-seepage and other fields, and has achieved good economic and social benefits. In recent years, Henan Province has widely adopted anti-seepage measures for the channels of the South-to-North Water Diversion Project, and achieved good anti-seepage effects. This paper summarizes the quality control in the construction process of the application of composite anti-seepage technology, and conducts a preliminary discussion on the composite selection construction technology, process requirements, joint layout methods, and quality control.
Or composite welding, bonding, slot bonding, perimeter anchoring, top connection placement process, bonding should be avoided as much as possible. Especially in the welding process, it is necessary to minimize the leakage of welding, virtual welding and one welding. With many stops, the two membranes fit as closely as possible if overlapping in the groove. If the chickenpox is high, the membrane is thick, or large displacement may occur, when the membrane is connected to the bedrock or concrete, bolts should be used as much as possible, and the remaining part of the deformation should be left. Pay attention to the quality standards of block construction. Construction personnel can handle various complex situations according to construction conditions. The slope stability analysis adopts the balance method. The choice of slopes is rough. The lower support layer uses weakly permeable materials. Cleaning, packaging, hot-melt welding, and film protection measures should be improved during construction.
In order to further improve the construction quality of the water conservancy anti-seepage project and ensure the anti-seepage performance of the project, the anti-seepage composite geomembrane construction method can be used during construction, and the composite geomembrane can be used to assist the waterproofing of the project and enhance the permeability of the project. In addition, in the construction of composite geomembrane, the quality of installation must be strictly controlled, and the quality of geomembrane material itself as a geomembrane construction and the stability of the maintenance project against penetration must be ensured through evaluation means. Due to the shortage of water resources, the waste of water resources caused by waterways in agricultural production is also very serious. At present, water saving, energy saving and anti-seepage in waterways have been realized in social development. As one of the common material structures in channel engineering, geomembrane is becoming more and more popular. Composite geomembrane is applied to the infiltration reinforcement treatment of rural canals, and the use of composite geomembrane for infiltration reinforcement transformation of rural canals is technically feasible, economical, and has good anti-infiltration effect, which has great promotion and application value.
The above is the difference between geomembrane and composite geomembrane. If you need to know more, please feel free to contact us!
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