Features of the non-explosive extraction of a dimension stone during opencast mining

Abstract

In dimension stone extraction technology the basic criteria of the process efficiency is its productive capacity and survival capacity of the extracted blocks. In some scientists’ investigations [1,2] splitting is viewed exclusively as the task of critical stress calculation at which the splitting occurs. Here the borehole model containing holes is considered and to the walls of which splitting force is applied to. Further, the tension intensity between adjacent blast- holes is calculated. The splitting criterion is the stress field between the boreholes, the minimum value of which should be equal to the ultimate solid’s tensile strength.