NATM tunnel groundwater response type back drainage material Moyai Drain NSB type

Even during times of abundant spring water, reliable water diversion is possible! Environmentally friendly NATM tunnel back drainage material.

The "Moyai Drain NSB Type" is a drainage material for the back side of NATM tunnels that suppresses water leakage into the tunnel interior. The core material features a unique three-dimensional mesh spiral structure, providing high compressive strength and drainage performance. Made of polypropylene with a high void ratio, it is less likely to clog due to free lime and other substances. By inserting it into the waterproof sheet that covers the non-woven fabric on the back side of the waterproof sheet, it effectively captures water from the sprayed surface and directs it to the back side drainage material. 【Features】 ■ Less likely to clog due to free lime and other substances ■ Effectively captures water from the sprayed surface and directs it to the back side drainage material ■ Eliminates the need to wrap the waterproof sheet around the back side of the drainage material ■ No need for band steel, allowing for easy installation by directly nailing concrete nails ■ Made from recycled materials and certified with an eco-mark, considering the environment *For more details, please refer to the PDF document or feel free to contact us.

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