Concrete Cloth Ditch Lining
Concrete Cloth Ditch Lining
Concrete Cloth Ditch Lining
Concrete Cloth Slope Protection

Central Vancouver Island, BC, Canada
Concrete Cloth™: Diversion Ditch for an Underground Mine

Project Overview

In August of 2016, 11,125 square meters of Concrete Cloth GCCM CC8 was used as a protective liner for a large diversion ditch at an underground zinc and copper mine on Central Vancouver Island in Canada. The diversion ditch, which conveys clean water from the hillside above to a lower creek, was originally lined with shotcrete. The material, however, started to degrade.

It was recommended that the diversion ditch should be enlarged and realigned to effectively handle the high water volumes and velocities.

Alternative options such as new shotcrete were considered, but CC8 was specified due to its ability to cope with high water velocities, accommodate the variance of profile and the ease of repair if future damage occurred due to falling trees or large boulders from the above hillside. Since the water was diverted away from the ditch during installation, the speed of installation was key as the diversion pipes wouldn’t be able to handle the high water volume expected to begin in early October.

The use of Concrete Cloth GCCM meant measures could be in place much faster than using conventional concrete or shotcrete. The ditch was designed to handle water velocities up to 20m/sec with slopes as steep as 16% and 20% in some sections.

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