Method and arrangement for automatic mixing of water and...

B - Operations – Transporting – 28 – C

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B28C 7/04 (2006.01) B28C 7/12 (2006.01) E21D 20/02 (2006.01)

Patent

CA 2563383

Method and arrangement for automatic mixing of water and concrete for rock bolting including adding water and concrete to a mixing vessel (1), mixing the water and concrete, and transferring the water and concrete to a drill hole(2). Water amount and concrete amount for the mixture of water and concrete is calculated in a control unit (3), that the calculated water amount is added to the mixing vessel (1), that the in the reality added water amount is weighed (4), that the calculated concrete amount is corrected considering the in the reality added water amount to obtain a correct mixture of water and concrete, that concrete and water are mixed during a predetermined time, and in that the mixture of water and concrete is transferred to a drill hole (2).

Cette invention concerne un procédé et une installation de mélange automatique d'eau et de béton en vue d'opérations de vissage dans la roche, consistant: à ajouter de l'eau et du béton dans un récipient mélangeur (1), à mélanger l'eau et le béton et à transférer le mélange d'eau et de béton dans un trou de forage (2). Cette invention se caractérise en ce que la quantité d'eau et la quantité de béton pour le mélange eau-béton sont calculées dans une unité de commande (3), le volume d'eau calculé est ajouté dans le récipient mélangeur (1), la quantité d'eau effectivement ajoutée est pesée (4), la quantité de béton calculée est corrigée en fonction de la quantité d'eau effectivement ajoutée, ce qui donne le mélange correct d'eau et de béton, le béton et l'eau sont mélangés pendant un laps de temps déterminé et le mélange eau-béton est transféré dans le trou de forage (2).

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