EXAMINATION OF FRACTURING OF LEZNYKIVSKIY GRANITE DEPOSIT WITH PROSPECTS OF MINING BLOCK PRODUCTS.

For the purpose of the examination of natural blockiness, structural studies on the operating Leznikivskiy crushed-stone quarry were carried out, and documentation of 50 test pits, drilled eastwards from the quarry was studied. During these researches, the problems, associated, first of all, with the detection of fractures, fracturing areas, tectonic faults and examination of their spatial orientation were solved. Regular changes in the deposit elements of sub-horizontal fractures were noted. The circular diagram, which is the basis for the construction of the structure diagram with the fracture density isolines was built. The estimation of granite fracturing and block output was carried out using two techniques: 1) examination of granite fractioning in the quarry within the I and III benches on the Eastern area and I bench on the Western area; 2) examination of fracturing on boreholes (index of specific rock fracturing U_fr, which is the sum of specific fractioning of subvertical, inclined (diagonal) and subhorizontal fractures). The spatial orientation of fractures, fracturing areas, tectonic faults, etc. was also examined. According to the specific fracturing, estimated in terms of boreholes, the blocks of the II-IV grades are practically absent, while in terms of the distance between the fractures, measured in the quarry, the output of these blocks approximates to 50-60%. [ABSTRACT FROM AUTHOR]