Brusnik S. Development of methods of definition a land surface state at mass explosions in open-cast.

The dissertation is devoted to the problems of defining, accounting and forecasting of mass explosions influence in open-cast on the state of a land surface in the remotes zones and on the results of survey-geodetic measurements. The analysis of modern methods of definition of stability of a land surface, engineering constructions and the process equipment has allowed to establish, that reliability of the received results is influenced mainly by accuracy of measurements and stability of initial reference points which blasting significally influence at open-cast mining deposits of minerals is executed. Dependence of displacement of reference points on weight of explosives, distances from a place of explosion, duration of explosion and acoustic rigidity of rocks between an anchor of a reference point and host rocks is established. The technique of carrying out survey-geodetic supervision in conditions of intensive mining works is developed.