Low energy precision flooding irrigation apparatus and method

E - Fixed Constructions – 02 – B

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Details

E02B 13/00 (2006.01) A01G 25/06 (2006.01)

Patent

CA 2262416

An irrigation conduit (10) includes a plurality of emitters (11) spaced apart along its length. A conveyance channel (12) is connected to each emitter (11) and is long enough so that a distal end (14) of the conveyance channel (12) may be positioned at or just above the soil surface with the conduit (10) buried below the soil surface. Each emitter (11) or each conveyance channel (12) includes associated with it a flow control arrangement (30) to control the rate of flow through the conveyance channel (12) when water is applied to the conduit (10) at a desired pressure and flow rate. The flow rate through each conveyance channel (12) exceeds the local hydraulic loading rate of the soil adjacent to the conveyance channel (12). The rate in excess of the local hydraulic loading rate causes localized flooding and allows the water to spread out substantially across the soil surface prior to moving downwardly into the soil.

Conduite d'irrigation (10) qui comporte une pluralité d'émetteurs (11) espacés sur sa longueur. Un canal d'adduction (12) est connecté à chaque émetteur (11) et est assez long pour que l'extrémité distale (14) du canal d'adduction (12) puisse être placée au niveau ou juste au-dessus de la surface du sol, la conduite (10) étant enterrée. Chaque émetteur (11) ou canal d'adduction (12) est associé à un dispositif de régulation (30) de flux destiné à réguler l'écoulement du flux dans le canal d'adduction (12) lorsque de l'eau est envoyée dans la conduite (10) à une pression et un débit désirés. Le débit dans chaque canal d'adduction (12) dépasse le taux local de charge hydraulique du sol adjacent au canal d'adduction (12). Le débit en excès par rapport audit taux local entraîne une inondation localisée et permet à l'eau de se répandre au niveau de la surface du sol avant de s'introduire dans le sol.

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