Abstract
This paper analyzes technological schemes of mining blocks of granite dimension stone in Finland, Italy, Portugal, Spain, and Russia. It contains an idea of increasing the yield of commercial blocks from rock mass by minimizing processing loss of block products in deposits with a complicated bedding of natural joints limited by systems of steeply and flat dipping fissures. The authors developed methods to calculate reasonable process parameters of combined preparation for dimension high-strength stone mining in deposits with a complicated mining and geological bedding of minerals, using a high-stepped two-stage scheme of mass mining, when at the first stage blocks were cut with a diamond wire saw, and at the second stage blocks tilted on an operating platform were cut into commercial blocks with tophammer drilling rigs.
Keywords
Diamond wire saw, performance, blocks of granite dimension stone, primary block, secondary block, damping filling, horizontal cut, block parameters, bench height, block fissuring.
1. Pershin G.D., Karaulov G.A., Karaulov N.G., Karaulov A.G. The influence of the height of the bench on the output of commercial marble blocks. Gornyj zhurnal [Mining journal]. 2008, no. 1, pp. 25-26.
2. Sinelnikov O.B. Norwegian labradorite quarries near the city of Larvik. Kamen' vokrug nas [Stone around us]. 2009, pp. 21-25.
3. Dubrovsky A.B., Ulyakov M.S. Selection of equipment when developing the Nizhne-Sanarsly granodiorite deposit. Gornyj zhurnal [Mining journal]. 2011, no. 5, pp. 67-70.
4. Pershin G.D., Karaulov N.G., Ulyakov M.S. The research of high-strength dimension stone mining technological schemes in Russia and abroad. Sbornik nauchnykh trudov SWorld [Collection of scientific papers SWorld]. Iss. 2. Vol. 11. Odessa: Kuprienko, 2013, pp. 64-73.
5. Pershin G.D., Karaulov N.G., Ulyakov M.S., Sharov V.N. Features of diamond-wire saws application for rock overburden removal at marble quarry construction. Sbornik nauchnykh trudov SWorld [Collection of scientific papers SWorld], 2013, vol. 14, no. 3, pp. 39-42.
6. Bychkov G.V., Kokunin R.V. Optimum ways of stripping mining horizons in prospective and operating natural stone deposits. Dobycha, obrabotka i primenenie prirodnogo kamnya: sbornik nauchnykh trudov [Mining, processing and application of natural stone: collection of scientific papers]. Magnitogorsk: MGTU, 2007, pp. 83-92.
7. Pershin G.D., Ulyakov M.S. Rationale for ways to prepare dimension high-strength natural stone for mining. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universi-teta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University], 2010, no. 4 (32), pp. 14-19.