METHOD OF MONITORING THE DEVELOPMENT OF A ZONE OF WATER-CONDUCTING CRACKS OVER A MINED SPACE ON RESERVOIR DEPOSITS Russian patent published in 2019 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: invention relates to mining industry and can be used for evaluation of safe mining operations under water bodies, such as rivers, lakes, artificial reservoirs, water-bearing horizons etc. Method comprises determining content of rocks of clay composition in undermined thickness, boundary curvature of rock layer as a function of content of rocks of clay composition, a relative centre of distribution of thicknesses of rocks of clayey and non-clayey compositions of undermined thickness, edge curvature is corrected by multiplying it by value of relative centre of distribution of thicknesses of rocks of clayey and non-clayey compositions of undermined sequence. On the surface above the future worked out lava space there laid is a profile line of reference points in the main section of the formation displacement strata. Periodic levelling is carried out according to reference points of the profile line located in the zone of influence of the moving face of the lava for each series of observations corresponding to the determined position of the face of the lava relative to the profile line. Obtained distribution of subsidence, inclination, curvature and height of propagation of zone of water-conducting cracks as vertical distance from developed reservoir to profiled line, multiplied by square root from ratio of maximum value of curvature in series of observations along profile line to boundary curvature for given mining-geological conditions.

EFFECT: technical result consists in improvement of accuracy, reliability and efficiency of control over position of upper boundary of zone of water-producing cracks, which varies depending on development of cleaning works.

1 cl, 2 dwg