DEVELOPMENT METHOD OF WATER-BEARING MINERAL DEPOSITS Russian patent published in 2014 - IPC E21C41/26 

FIELD: mining.

SUBSTANCE: according to the proposed method, an open-pit field is developed with a trench; the open pit is filled with water and an extraction device is installed in it; the open-pit field is developed in downward horizontal layers with water level control after development of layers. The water-filled open-pit field is divided into the following zones: working deposit zone prepared for development and developed deposit zone; in each of the above zones there installed are water-nonpermeable screens fenced from the common open-pit field. In addition, each zone is restricted with partition walls and water level is controlled, thus providing its increase in the working zone provided that H_l>H_w+ H_s.max, where: H_l - height of horizontal layer, m; H_w - height of water column, m; H_s.max - maximum scooping height, m; and under the condition of H_w > H_ds.max, there provided is water level decrease in the working zone, where H_ds._max - maximum scooping depth, m; and as the extraction device is being moved to a new working zone, installation of partition walls in the prepared zone and removal from the developed zone is performed.

EFFECT: improving development efficiency of water-bearing deposits.

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