Advantages of Laying Bentonite Waterproof Blanket on the River Bottom

　　Firstly, lay a bentonite waterproof blanket at the bottom of the river, and backfill and compact 30cm thick soil on the waterproof blanket.

　　Next, choose HDPE geomembrane on the side slope. Bentonite waterproof blanket is a type of impermeable material that fills high expansion sodium based bentonite between specially made composite geotextiles and non-woven fabrics. People use special needle punching technology to evenly weave high sodium based bentonite between two layers of geotextile, forming a blanket like anti-seepage material.

　　The anti-seepage of bentonite waterproof blanket refers to the fact that after the bentonite in the middle of the material absorbs water, it is ultimately confined to a certain space and expands under the pressure of the upper and lower layers of geotextile and backfill protection layer, forming a tight cementitious body to achieve the function of water stop and anti-seepage.

　　Based on the actual situation of the river, it is recommended to lay bentonite waterproof blanket (GCL) in a top-down order. For slopes with small angles, they can be directly uncoiled and laid on the slope bank, and the protective layer should be prepared as soon as possible.

　　The bottom bentonite waterproof blanket (GCL) of the revetment should be overlapped and fixed with the bottom bentonite waterproof blanket (GCL) to form a complete waterproof system.

　　When laying bentonite waterproof blanket (GCL), one side of the woven fabric should face the wall and the other side of the non-woven fabric should face the water surface. Bentonite waterproof blanket (GCL) should be avoided as much as possible from overlapping on the facade and slope bank.