The development of a technological complex in deposits of dimension facing stone
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2016, Vol 78, Issue 3
Abstract
One of the main problems in the Ukrainian dimension stone sector is the distribution problem. A typical quarry exploits up to 1000–1500 m3/y of trade blocks. Thus, it is very difficult to perform a standard foreign order of 500-1000 m3. This is often due to improper exploitation technique planning and management. The aim of the study is to identify the best exploitation technique for the Ukrainian shield conditions in terms of the highest technical and economic applicability. The data were collected at several Ukrainian and Italian quarries. Performance data of dimension stone exploitation techniques was measured in order to determine which of them are the most economic and the least labour-intensive. Unit costs for the monolith explosive separation (using detonating cord) are more than 3 times lower than the use of the combination of diamond wire sawing and dynamic splitting in terms of 1 m3 of trade blocks. The combination of diamond wire saw with «hydrorocksplitters» is slightly cheaper; it justifies its widespread use in Ukrainian quarries. To preserve the rock mass integrity and block surface quality all of the techniques are suitable. Among the tipping techniques the use of wheel loaders is disseminating nowadays. Hydraulic jacks are used at this stage sometimes. Block separation on trade units is often carried out by splitting with manual or hydraulic wedges. Expensive rock blocks can be also splitted by a diamond wire saw. A wheel loader can be used for block handling under short trips condition. While long trip the use of dump trucks for block and waste products transportation is required.
Authors and Affiliations
N. P. Filipova
Keywords
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