Groove basis drainage structures is let out to embankment dam bank spillway

The utility model relates to a groove basis drainage structures is let out to embankment dam bank spillway, especially a groove basis drainage structures is let out to embankment dam bank spillway who is applied to hydraulic and hydroelectric engineering technical field. The utility model provides a simple structure, reasonable, reliable, the infiltration of groove basis is let out to the spillway of can effectively discharging, reduces the groove basis drainage structures is let out to embankment dam bank spillway who lets out tank bottom board osmotic pressure. Groove basis drainage structures is let out to embankment dam bank spillway, including the escape canal, the both sides in escape canal are provided with and grout the stone walling. The both ends of geotechnique's cloth through the bolt with grout the stone walling and be connected. Building earlier the stone masonry parapet by laying bricks or stones, spreading between the stone masonry parapet and fill out cobble drainage material, the adaptable different escape canal basement rock excavation size of construction is arranged with the cobble drainage to the stone masonry parapet, and the anti-effect of straining of drainage has been expected in the cobble drainage. Geotechnique's cloth can prevent to let out tank bottom board concrete thick liquid infiltration cobble drainage material, can make the osmotic flow emit into cobble drainage material, plays filter sand drainage effect.