Composite blind drainage channel

Abstract

A composite blind drainage channel, characterized in that it comprises a main body (1) and a filter and protection structure (2), wherein the main body (1) comprises a base (101); an outer end of the base (101) is sheathed with a first geotextile (105); a blind channel pipe (102) is inserted into an inner part of the base (101); a water-permeable layer (104) is filled between the inner part of the base (101) and the outer side of the blind channel pipe (102); the filter and protection structure (2) comprises an outer frame (201) which is sheathed at an outer end of the base (101); an arc-shaped filter mesh (208) is arranged at an inner lower end of the outer frame (201); a pair of slots (204) is fixedly connected to both sides of the inner part of the outer frame (201); two pairs of slots (204) are arranged inside with a grid plate (205); the grid plate (205) is arranged above the arc-shaped filter mesh (208);and a second geotextile (207) is arranged at an upper end of the grid plate (205).