23 Jul Underground layered drainage structure and construction method thereof
Abstract
The invention relates to an underground layered drainage structure. A non-cavity drainage ditch is connected with a tubular drainage ditch, and a porous concrete layer is arranged on the non-cavity drainage ditch. The tubular drainage ditch is internally provided with a fiber reinforced polymer plastic perforated pipe and filled with gravel. A sand reverse-filter layer and a sand protective layerare arranged on the upper part of the tubular drainage ditch from the bottom to the top along the outer side of a protective brick wall in sequence. The non-cavity drainage ditch is further filled with gravel. Groundwater in the non-cavity drainage ditch is transferred into a water collection inspection well through the tubular drainage ditch and concentratedly discharged. According to the underground layered drainage structure, the height of the groundwater level can be effectively controlled, the situation that water seepages from the underground structure due to failure of a waterproof coiled material under the long-term action of the groundwater is avoided, the pressure of the groundwater on a lower foundation of the plant is reduced, and the possibility of foundation floating is reduced; and in addition, the drainage structure is applicable to the coastal engineering and further applicable to the tissue discharge of ground seepage, and can be applied to the underground drainage engineering of industrial and civil buildings with high groundwater level and the sponge city to realize rainwater recycling.
Year: 2019
Country: CN
Doc No: 110439014