Combined embankment edge covering structure and construction method thereof

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 preventi