A device for trigger the destruction of a selected portion of a hydraulic structure such as a levee, an embankment dam or dike, and hydraulic structure comprising such a device

摘要

The invention concerns a device for triggering the destruction of a selected part (1, 11) of a hydraulic structure, such as a levee, dike or backfilled dam, the selected part comprising erodable materials such that it can be destroyed by hydraulic erosion. The device comprises at least one solid section (5) which is disposed at the top of the selected part (1, 11) of the structure and is held there by gravity. The size and weight of the solid section (5) are such that it can be expelled by water when the water reaches a predetermined level (N). The vertical dimension of the solid section measured below this predetermined level (N) is such that the outflow released when the solid component has been expelled is of a depth (z) which ensures that the selected part (1, 11) of the hydraulic structure is destroyed reliably and rapidly.