| 摘要 |
The invention provides a method for constructing a specific, though temporary, watercourse in a natural or artificial river bed. It consists in placing on the river bottom (5) a number of concrete supports (1) provided with holes (4). Elements (10) can then be placed in the river bed by driving a rod (11) located at their lower end into a corresponding hole (4). Any obstacle can then be created as required, especially if the river can be drained. Application in the construction of watercourses, in particular for canoeing and kayaking.
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