| 摘要 |
PROBLEM TO BE SOLVED: To provide a water intake device having always stable water intake capacity, and capable of freely setting a water quantity for water intake, regardless of performance of direct water intake from a river. SOLUTION: A device is constituted so that a wall surface of a water tank gathers river-bed water from a surrounding gravel layer, by arranging the water tank 1 composed of a water permeable wall body in a tip position of an intake pipe. Next, a land well 2 provided for pumping water, is arranged outside the river, and the water tank 1 and the land well 2 are connected by the intake pipe 3. When filling water in the intake pipe 3 in this state, the land wall 2 becomes a well having a water level in the same height as a river water level. Irrigation is performed by providing the river-bed water stably supplied to the land well 2 from the water tank 1. COPYRIGHT: (C)2005,JPO&NCIPI
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