Africa-Press – Angola. Preliminary repair work on the Cunene River Water Transfer System, through the Cafu conduit, in Cunene province, which started last February, was completed in March of this year.
The channel showed displacement of the plates and some cracks at the beginning of February, as a result of the rains that fell for 12 consecutive days.
In a statement this Monday to ANGOP, the director of the National Institute of Water Resources (INRH), Narciso Ambrósio, said that the landfill and soil sanitation sessions had been restored.
The person in charge highlighted that the canal sections were blocked, to allow the damaged section to be removed from silt and to fill some cracks, as well as to compact the land along the canal.
According to the person in charge, in this process the 20 damaged points were intervened along the entire length of the canal, whose work carried out will not have additional costs as it is within the guarantee period of the work, which is three years.
After concluding the preliminary works, he said that the sustained solution process will be developed, taking place from May to August, which will be preceded by the photogrammetric survey.
He clarified that the photogrammetric survey will be carried out after the lowering of the water levels, in order to allow the definition of the level curves and the delineation of the chanas.
Narciso Ambrósio highlighted that a monitoring brigade will be created, which will carry out weekly, along the entire length of the channel, checking the compaction of the service areas, use of crossings, drinking fountains and characteristics of the slabs of the channel.
He added that the creation of a channel management unit is also planned to ensure the sustainability of the hydraulic structure.
Structure of Cafu
The Cafu hydro project is the first of a series of five projects created by the Angolan Government as part of the program of structuring actions to combat drought in the region, which will benefit 235,000 people.
Valued at 44 billion, 358 million and 360 thousand 651 kwanzas, it will also allow the watering of 250 thousand animals and the irrigation of five thousand hectares of agricultural fields.
In this system, metallic structures were installed for the aspiration chamber and water intake area, the electrical substation building, with three generator sets with a capacity of one megawatt and a one-dimensional reservoir, in addition to solar panels capable of generating 1.5 megawatts of energy.
The project has an open-air channel, extending for about 160 km, derived from the Cafu session reservoir, on the Cunene river, includes 30 chimpacas, 100 meters long, 50 meters wide, five to six meters deep. and the water storage capacity ranging from 25,000 to 30,000 cubic meters.
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