Determination of rock filtration coefficient in the massif at regulated water release from flooded excavations

Abstract

From flooded mine workings the regulated descent of water with a large hydrostatic head can be ensured at reliable determination of the size of the target left between the flooded mine workings and the face of the slipway, through which the water is planned to be discharged. To calculate the size of the pillar it is necessary to know the compressive strength of rocks, which is usually determined by samples at natural moisture.