Construction method of artificial lake bentonite waterproof blanket
GCL non-woven geotextile, that is, white surface punching, laying, and then use 300mm thick compacted clay, medium sand, or with 60mm---100mm thick plain concrete cover, also can use 50mm thick cement mortar, embedded in the diameter of 50--80 pebbles. When the slope angle of the slope and the slope wall is more than 1:3, the 100mm thick concrete is covered on the slope of the slope wall.
Lap should be flat and the lap length is greater than or equal to 300mm.3, the overlap evenly sprinkle 0.4kg---0.6kg/m bentonite powder.4, considering the settlement, when necessary, can GCL in the bottom crease 1~2, wrinkle length is 100mm.
Based on the requirements, laying waterproof blanket should be smooth along the flow direction of the lap, the first bank (bank) after the bottom of the order, namely the upstream GCL lap in the downstream of the GCL.
If a pipe or a pile is passed through the GCL first, use a complete GCL, according to its diameter, plus the circumference of 300mm, to do a bottom strengthening treatment, after the whole roll is laid, and then use water to mix the bentonite powder into a slurry, coating the side of the pipe.
