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 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 resistant to clogging from free lime and other substances. By inserting it into the waterproof sheet that covers the non-woven fabric on the back of the waterproof sheet, it effectively captures water from the sprayed surface and directs it reliably to the back drainage material. 【Features】 ■ Resistant to clogging from free lime and other substances ■ Effectively captures water from the sprayed surface and directs it to the back drainage material ■ Eliminates the need to wrap the waterproof sheet around the back 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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basic information
【Specifications】 ■Standard: T30×W200 ■Compressive Strength: 75kN/m2 with a compression of 10% or less (based on NEXCO tunnel design standards) *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Yoshihara Chemical Co., Ltd. has developed a unique structure of permeable material called "Moyai Drain," which improves compressive strength and permeability compared to conventional loofah-structured permeable materials. This product is supplied to the Ministry of Land, Infrastructure, Transport and Tourism, NEXCO, the Railway Construction and Transport Facilities Development Support Organization, various local governments, prefectural road public corporations, and other public institutions.
