AWMA DLF Downwards Opening Penstock
AWMA DLF Downwards Opening Penstock for automated water control at weir, with SA Water.
AWMA DLF Decant Weir Gates and Fishway for SA Water
York Civil Pty Ltd engaged AWMA to custom design vertical water control gates, fishway gates and hydraulic actuation systems for SA Water’s Pipeclay and Slaney Weirs.
Manual Operation of AWMA Segmented Stopboards with Lifting Device
View manual operation of AWMA Segmented Stopboards via Lifting Ladder. Designed for safe and effective replacement of drop bars in water ways and irrigation channels.
York Civil Pty Ltd engaged AWMA to custom design vertical water control gates, fishway gates and hydraulic actuation systems for SA Water’s Pipeclay and Slaney Weirs.
Five large AWMA Fixed Base Overshot (decant) gates were developed to simulate overshot flow patterns of the existing stoplogs, whilst Segmented Stopboards were supplied for the new environmental fishways.
The Pipeclay Weir requires a three gate regulator whilst Slaney’s is a two gate regulator.
The largest water control gate provides a clear water opening of 5800mm, has a gate leaf height over 2m high and is subject to 10tn of water pressure plus environmental debris loading.
The overshot gate leaves were manufactured from marine grade aluminium with grade 316 stainless steel embedded frames and stainless steel dual cylinder actuation systems.
Extensive engineering and testing was undertaken on the dual hydraulic re-phasing cylinders supplied by Queensland Hydraulics, which maintain synchronisation without the need for expensive electronic transducers.
This project is subject to isolation issues with the Slaney regulator accessible only via boat. SA Water will operate these gates using AWMA’s petrol driven Hydraulic Power Pack, designed to allow easy operation of remote sites. The portable device will be quick coupled to the control manifold via hydraulic hosing for ‘plug and play’ operation. Additionally, this option limits the asset investment permanently required on-site, reducing the risks of vandalism and system damage.
Marine grade aluminium segmented stopboards and AWMA lifting ladders were supplied for the fishway gates. Design features include overshot flows with low velocities for safe fish passage.
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