Welmore Lake Sluice
Client: Environment Agency
Approx. value: £3m
Duration: 104 weeks
An Environment Agency commissioned new three-gate tidal sluice featuring both lift gates and mitre gates together with an automatic over- pumping facility and silt jetting equipment on a new location downstream of the former structure at the confluence of the River Delph and The Hundred Foot River in Cambridgeshire.
The works were carried out, in the dry, inside a 46 metre diameter sheet piled cofferdam using 16 metre long steel piles. The cofferdam was restrained by two circular reinforced concrete walings that, in addition, acted as access platforms during construction work. The sluice structure, which contains a total of 3500 cubic metres of reinforced concrete is supported on approximately 170, 18 metre long steel H piles. Upon completion and commissioning of the new structure, the old sluice was demolished and the riverbanks regraded and realigned.
