Generation of Granulometric Composition of Broken Rocks in Fragmentation by Bench Blasting

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A physical model is created to describe stage-by-stage fracture of rock mass by deep-hole blasting. The analytical dependences are presented for main parameters of massive blasting. The zones of intense and passive crushing are identified in a blasted bench. The formulas are obtained to calculate volumes of different size particles in these zones. The automated determination procedure of particle size distribution is proposed. The program in Microsoft Visual Studio 2017 environment allows the automated analysis of blasthole pattern in a bench and particle size distribution in broken rock mass depending on initial data.

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The study was supported by the Ministry of Science and Education in the Republic of Kazakhstan within the framework of the Targeted Program of Technological and Production Modernization in the Mining and Processing Industries in Kazakhstan in 2018–2020, No. 2018/BR05235618.

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Correspondence to B. R. Rakishev.

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Russian Text © The Author(s), 2020, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2020, No. 1, pp. 41–53.

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Rakishev, B.R. Generation of Granulometric Composition of Broken Rocks in Fragmentation by Bench Blasting. J Min Sci 56, 36–46 (2020).

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  • Physical model of rock blasting
  • main blasting parameters
  • intense and passive crushing
  • rock volumes
  • automated analysis of granulometric composition
  • software