Kulenich B. A substantiation of parameters of a method of an active preliminary unloading of rock of ground at driving of preparatory developments.

Method of an active preliminary unloads of floor's rock. A raise of an stability of preparatory developments and velocities of their driving by way of a substantiation of geomechanical and technological parameters of a method of an active preliminary unloading. Mathematical modeling (simulation), finite element method, mine reometrical and tool's samplings. The singularities and regularities of distribution of stress in rock massive in a neighborhood of developments are investigated before and after the unloading of floor's rock under face of development. The influence of the form and geometric sizes on regularity of distribution of stresses around of development is detected. The dominating influence of depth of area of an unloading to magnification of astability of supported development and lengths of this area on a raise of effectiveness of drill-explosion's works is established. The new analytical-experimental associations for the definition of depth of an unloading are obtained in view of influe nce of basic mine-technology factors. The techniques of the definition of rational geomechanical and technological parameters of method of an active preliminary unloading of floor's rock ahead of a drift are developed. The new passports drill-explosion's works with a unloading of floor's rock introduced on mines "Krasnodoncoal" and "Antracitcoal" companies are developed. On mines at driving of developments, in research institutes, in the educational process in high schools.