Combined embankment edge covering structure and construction method thereof

Abstract

The invention discloses a combined embankment edge covering structure and a construction method thereof. According to the combined soil embankment edge covering structure, cement modified soil is combined with a geogrid reinforcement soil sandwich structure, and therefore the embankment protection structure capable of preventing waterlogging damage caused by slope surface water washing and slope soil infiltration is formed; and the embankment protection structure comprises the four parts of a cement modified soil cushion layer 1, a geogrid reinforcement soil sandwich slope layer 2, a cement modified soil cover layer 3 and a slope plant loam layer 4. Compared with a traditional geogrid reinforcement soil embankment edge covering structure, the combined embankment edge covering structure has the significant advantages of being easy and rapid to construct, capable of saving geogrid materials, low in cost, good in waterlogging damage prevention and stability and the like, and is particularly suitable for prevention of embankment slopes composed of sandy soil, floury soil, granite residual soil and the like which are prone to subjected to waterlogging damage.

Description

technical field [0001] The present invention relates to an embankment wrapping structure, in particular to a combined embankment wrapping structure, and also relates to a construction method of the embankment combined wrapping structure. Background technique [0002] Under the action of rainfall, the embankment built with granite residual soil will infiltrate the rainwater, which will cause the water content of the granite residual soil to increase and the shear strength to decrease, which will cause the embankment to collapse and easily cause water damage. Therefore, for the filling of granite residual soil The embankment can be equipped with a clay-enclosed structure or an embankment-enclosed structure of geogrid-reinforced soil to prevent water damage to the embankment slope caused by rainfall erosion and humidification. However, if the clay-enclosed structure is used, the clay is often tens of kilometers away, and the transportation distance is large, resulting in high c...

AI Technical Summary

Problems solved by technology

However, if the clay-enclosed structure is used, the clay is often tens of kilometers away, and the transportation distance is large, resulting in high costs, which is difficult to be accepted by the builder; if the conventional geogrid reinforced soil embankment-enclosed structure is used, the existing geogrid In the grid-reinforced soil filling process, the geogrid needs to be fixed by "U" nails, and the upper and lower geogrids need to be connected with connecting rods, which not only increases the complexity of the geogrid-reinforced soil filling process, The construction time is prolonged, the construction cost is increased, and the rainwater seeps down into the geogrid reinforced soil-encased structure due to the water permeability of the top platform, which causes the bottom of the reinforced soil-encased layer to soften and affects the reinforcement of the embankment slope Stability of the hemming structure

Images