Shulgin P. Substantiation the design and parameters of straight cylinder burn cut for the mine working drifting

Object - explosive destruction of rocks at the mine face of mine working. Purpose: to study construction and parameters of direct cylindrical cut to increase the efficiency of construction of mine working. Research methods: review and generalization of literature and patent sources; theoretical research with the use of the probability theory, mathematical statistics, theory of similarity and dimension, mechanics of continua; physical simulation on equivalent materials; laboratory modeling by means of electro-hydrodynamic analogy method; computer design of distribution of energy at blasting charge interaction. Results obtained: the construction of direct cylindrical cut and calculation procedure of its parameters have been developed. The modeling method of mechanical action of explosion on equivalent materials has been suggested, the construction of laboratory bedstead and technical instruments for blast data have been developed. Technological operations have been grounded, the devices for marking and directional drilling of borehole at the mine face in the mine working have been suggested. The computer algorithm and application package for the calculation of parameters of blasting passport with the use of direct cylindrical cut have been developed . The procedure of calculation is introduced to State Design Institute SPJSC "Luganskgiproshakht" and in university academic planning of DonSTU (c. Alchevsk) and TUKE (Slovak Republic). As a result of speed increase of mine working drifting, decline of drill footage and material consumption, expected economic effect can come to 3 - 6% from the cost of mine working drifting. Sphere (branch) use - at mines for drifting of mine workings, in scientific-research and design institutions of mining direction, in higher educational.