Drainage Material "Moyai Drain ST Type"

For the treatment of spring water in the tunnel arch section! Improved with a flexible structure to enhance adhesion to the ground.

The "Moyai Drain ST Type" is a drainage material designed to quickly handle groundwater and dripping water in the arch section of the primary lining of NATM tunnels. It possesses excellent performance in terms of required functions for back drainage materials, such as compressive strength, water permeability, and workability, clearing the standard of 75 kN/m² or more (according to NEXCO tunnel design guidelines) at a compression rate of 20%. Additionally, it has obtained an eco-mark by using recycled polypropylene, contributing to resource conservation and a circular economy. 【Features】 ■ Clears 75 kN/m² or more at a compression rate of 20% ■ Higher water permeability compared to a water-permeable mat with a gourd structure ■ No need for band iron or other materials for nailing, ensuring good workability (patented) ■ Obtained an eco-mark by using recycled polypropylene ■ Contributes to resource conservation and a circular economy ■ The polypropylene raw material is less likely to adhere to free lime compared to other materials *For more details, please refer to the PDF document or feel free to contact us.

Drainage material