PROTECTION METHOD OF OPEN PIT AGAINST UNDERGROUND WATER INFLUX Russian patent published in 2014 - IPC E02B11/00 E02B3/16 E02D19/00 E02D31/02 

FIELD: mining.

SUBSTANCE: invention relates to mining industry, and namely to development of flooded mineral deposits, as well as it can be used at unwatering of foundations and in hydraulic engineering. In order to protect an open pit against underground water influx, the main horizontal drain wells 4 are constructed normally to open pit 2 side 1. At least two opposite lying additional side horizontal drain wells are constructed out of each main horizontal drain well 4. Out of points 5, 6, 7 on the main horizontal drain wells 4 there constructed to one side in the direction of adjacent wells 4 to the right are additional side horizontal drain wells 8, 9, 10. Out of the same points 5, 6, 7 on adjacent wells 4 there constructed to the left are additional side horizontal drain wells 11, 12, 13. All the additional side horizontal drain wells are constructed till their mutual intersection and formation of a closed drain circuit. All wells are constructed at the bottom of the drained water-bearing horizon.

EFFECT: providing increase of entrapment degree of breakthrough of underground water to open pit sides and reducing drilling volumes of the main horizontal drain wells owing to enlarging distance between them.

1 dwg, 1 ex