Rock ProtectionRiver and Canal Work
Rock Protection for River and Canal frontages
Practically all local river and canal banks have been given additional stability protection by the placement of rockwork in front of damaged or new revetments. The size of the stone required for protection of this bank rockwork is highly variable, and depends on many different factors.
The basic principal is inherently simple. The greater the hydraulic forces to which the armour is exposed, then the larger must be the pieces of rock. But hydraulic forces vary wildly. The most common agencies that can damage estuarine channel rock facings are wind waves, boat wakes, strong eddies and scour erosion through the rockwork, loss of background support and extreme local water velocities during floods and these also vary dramatically in different parts and places of the waterways system.
Ref: When Retaining Walls come Tumbling Down P.316
Loss of existing rock profile was of concern and a safety issue for this project. New rocks were placed with a long term profile in mind. All works done by barge.
Loss of sand behind revetment wall caused pathway that was foundation support to retaining wall showing signs of failure. Before commencement of remedial works, stabilization of revetment wall was required (rock protection).
Major collapse of revetment wall undermining retaining wall after heavy rains can be challenging.
After shows completed works including rock protection to prevent future failure. All works Engineered Certified.
River bank erosion
River bank erosion from floods and boat wakes. This project was causing major loss of property. A re-establishment of bank and rock profile to suit the purpose, all works completed by barge.