ACCIONA presented the Site C project during a technical conference organised in collaboration with SEPREM, the Spanish Society of Dams and Reservoirs, held in the assembly hall of the Ministry for the Ecological Transition on 21 May.
The event was officially opened by the President of SEPREM together with the General Manager of ACCIONA’s construction business in Spain, Portugal and Africa, Justo Vicente. They were followed by various representatives from ACCIONA who examined different aspects of the project, as well as the construction phases of the works, analysing the technical, environmental, meteorological and scheduling challenges of the project.
Following the general presentation of the project by Joaquín Jiménez, Hydro Projects Manager in the Construction area, Santiago Peña from the Land Engineering Department of ACCIONA’s engineering business analysed the geological and geotechnical setting in which the project is taking place.Mario Andreu, head of the Site C Technical Office, then went on to explain the design and construction process of a loose material dam.Julián Cid, head of the Hydraulic Works Department in ACCIONA’s engineering business, explained the different phases of managing the course of the river during construction, and specifically the twin tunnels for diverting the river flow.Lastly, Joaquín Jiménez spoke again, concluding the session, explaining the most significant aspects related to the foundations of the power plant and the spillways that are being constructed using roller-compacted concrete technology.
THE SITE C CLEAN ENERGY PROJECT
The Site C project consists of an earthfill dam, 1,050 metres long and 60 metres high, across the bed of the Peace River in northwest British Columbia, Canada.
ACCIONA will also construct a 70-metre high foundation structure from roller-compacted concrete with a total volume of 1.8 million cubic metres, to support the hydroelectric power plant and the spillway, which are also part of the project.
In addition to the principal civil engineering contract, the project includes important auxiliary works such as construction of five kilometres of cofferdams and two 800-metre river diversion tunnels with a diameter of nearly 11 metres, as well as various temporary access roads and bridges.
Once completed, Site C will be the third hydroelectric dam and power plant on the Peace River and will be one of Canada's largest dams.When it comes into operation, it will ensure the supply of clean and renewable energy for more than 100 years, to an average of 450,000 homes, providing huge stimulus to economic development and job creation in the region.