compound drainage net work for landfills
Compound drainage network for landfills
The composite drainage network used in landfill site has high drainage performance, which can eliminate surface seepage in time and ensure the stability of sealed slope. Sealing field gas exhaust layer The gas exhaust layer of the sealing field system in landfill is not enough or there is no plane gas exhaust layer, and the gas pressure imposed on the impermeable layer is too large, which may lead to the destruction of the sealing field system. A three-dimensional composite drainage network with high drainage performance can be used in the gas drainage layer of sealing field system. The gas guide layer of landfill sealing system is composed of high guide and discharge composite drainage net or three-dimensional composite drainage net combined with sand and gravel. In the sealing system of landfill site, the three-dimensional composite drainage network is used as the surface water and gas drainage layer, which can be applied to the steep slope, and its high drainage performance can timely exclude water and gas, so as to ensure the stability of slope.
DRAINAGE NETWORK
DRAINAGE NETWORK LINE
The purpose of landfill final cover sealing system is to limit the infiltration of precipitation into the landfill and minimize the production of leachate that may invade the water source. In a sealed field system, the function of the surface water drainage layer is to drain water from the overburden layer and avoid accumulation on the impermeable layer. The water will produce excess pore water stress on the impermeable layer of sealing field, which may lead to the sliding of vegetation-covered soil layer and the destruction of sealing field slope. Traditionally, sand and gravel are used as the surface water guide layer for sealing site, but it is difficult to stack sand and gravel cushion layer for slope with large slope. However, using three-dimensional composite drainage network can be applied to steeper sealing site slope, and can also increase landfill volume.
