Pashchenko A. Substantiation of rational technology of rocks destruction in requirements of activity of hydrostatic pressure

The dissertation is devoted to questions of a substantiation parameters and min-ing of rock destruction technology which provide pinch of productivity and a de-crease of power consumption of fracture process on borehole bottom in requirements of activity of hydrostatic pressure. The criterion of rock destruction in conditions of action of hydrostatic pressure - power consumption of separation of an element aside a free surface is chosen and proved. The given criterion is own characteristic of destruction process of a material which displays expenses of energy for separation of the certain volume of rock and depends on physicomechanical properties of soil and process of destruction. On the basis of analytical, bench and industrial examinations recommendations for pinch of efficiency of rock breaking in requirements of activity of hydrostatic pressure are offered, and the design procedure of key parameters of fracture designed: quantities of the enclosed forces and velocities of travel of a rock-breakingtool. Ob-servationally also dependence of power consumption of fracture on quantity of hy-drostatic pressure, such as soil and velocity of a loading of a material theoretically sets. On the basis of analytical examinations mathematical models of processes of fracture and influence on them fluids designed. Results of theoretical examinations have found confirmation in experiments and became basis for a substantiation of parameters and mining of technology of frac-ture of the rock, successfully approved under production conditions.