The examination of leznykivskoho granite deposit fracturing with prospects of block products mining
DOI:
https://doi.org/10.15587/1729-4061.2013.19208Keywords:
crack, tectonic situation, vector diagrams of cracks, granite blockingAbstract
In order to study natural blocking the structural investigation on the existing crashed stone Leznykivskyy career were conducted and the records of 50 exploratory wells drilled to the east of the quarry were studied. In the process of this examinations there were solved some problems connected both with searching cracks, fractured zones and tectonic faults and with the study of their spatial orientation.
Regular changes in dip subhorizontal cracks are marked. A pie diagram which is the basis for building structural diagrams of crack density isolines was constructed. The assessment of granite fracturing and of the output units was performed by two techniques: 1) the study of granite fracturing in the quarries within the I and the III of mining ledges on the eastern area and within the I mining ledge on the western area; and 2) the study of wells’ fracturing (a measure of the specific fracturing rocks Utr., which is the sum of specific fracturings of subvertical, oblique (diagonal) subhorizontal cracks). The spatial crack orientation, fractured zones and tectonic disturbances were studied. Units of the II-IV classes considering their specific fracturing measured in wells are practically absent, while, considering the distance between the cracks measured in the quarry, the output data of the block is about 50-60%.References
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