method of fixing and tensioning an impermeable cover and suitable device for fixing and tensioning an impermeable cover to the ground surface of a loose material hydraulic work

摘要

suitable method and device for securing and tensioning an impermeable cover for loose material hydraulic works a suitable method and device for securing and tensioning an impermeable cover comprising a plurality of geotips (20) for the protection of hydraulic structures (10) of loose material such as dam, canal, and / or water basin. a plurality of ditches or grooves (14) are excavated in the ground (12, 13) of the hydraulic structure (10), all rotating in a predetermined direction; each trench (14) is shaped to have a finished surface suitable for contacting the geotracks (20) is provided by an inert compactable loose material with a fine particle size, for example less than 0.6-0.5 mm . In the case of soils containing rocky or inert materials with high particle size, each trench (14) may optionally include a layer of drainage material (15). The fixing of the waterproof cover consists of a plurality of geotips (20) is performed by placing the geotips (20) in contact with the soil surface, connecting the trenches (14); the geotracks (20) are sealed along the overlapping edges leading to a first set of alternative spaces (14a) and blocked by a first ballast material (22) leading the geotracks (20) to a second set of alternate ditches (14b) adjacent to the above. the geotaps (20) are tensioned by pushing and locking them in the second trench set (14b) by a second ballast material (22).