CC Channel Lining | Parc Slip Mine, Margam, Wales | Hero – Video

750m² lining a channel as part of restoration works

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Background

In September 2017, Concrete Canvas^® GCCM* (CC) was used to line an overspill channel on the site of the former Parc Slip opencast mine in Margam, near Port Talbot in Wales.

The installation was part of the Margam Restoration works on the site, and was required to control water levels in the void and to prevent flooding of the nearby communities in Kenfig Hill and Cornelly.

Parc Slip site prior to works

Channel prior to works

750m²

of CC8^™ used to provide erosion control

70m

installed in 4 hours in bad weather conditions

17 days

to install by a team of 4

Solution

Alternatived considered for the project include concrete slabs, placed stonework and precast concrete channel sections. The advantages of CC over these solutions include reduced labour, reduced preparation work both off and on-site, reduced time on site and installation times, a significant reduction in material usage, which not only reduces costs, but also logistical requirements and is more beneficial to the environment as a result of lower CO2 emissions.

Channel excavated

CC8^® deployed transverse

Jointing CC overlaps, securing edges within anchor trenches using pegs, CC hydrated, anchor trenches backfilled

Design & Installation

Channel excavated prior to works
CC8^® Bulk Rolls specified
Transverse layup
Screwed joint
Edges secured within anchor trenches
CC hydrated

Upstream view of channel leading towards the void

Downstream view of channel leading towards the void

Conclusion

A total of 750m² of CC8^® were installed in 17 days by four people in wet, inclement weather. The CC was installed at rates of 70m in 4 hours in bad weather conditions. This project was the first installation using CC for PT Civils, and they were very impressed with the result, speed of install and low logistical footprint of the material compared to the concrete slab alternative.

CC was recognised as an environmentally friendly solution, allowing for safe overtopping of the lake void in the event of storm event, protecting local communities.

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