Block Collapse Risk Management

Abstract

Book DOI: 10.21467/abstracts.93 1-in the specimen С = 6 MPa 2-rock grip in the specimen С = 5,12MPa 3-rock grip in the specimen С = 4 MPa Figure. Change in adhesion in the dash array of the open pit, depending on the ratio of the pit side height h to the linear dimensions of the elementary block l. An equally important factor in managing the risks of collapse during the development of deposits by an upland quarry in a block massif is the parameters of drilling and blasting operations and the speed of movement of the face. In the off-site massif of the upland quarry during blasting operations, it is necessary to carry out blasting with preliminary slitting. In order to reduce the seismic effect on the array, the deceleration interval should be assigned in a series of charges for preliminary gap formation. 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 0 20 40 60 80 100 120 140 160 180 200 220 roc k gr ip in to m acc iv M Pa