2019-5-1

УДК 622.272.5
DOI: 10.21440/0536-1028-2019-5-5-13

Valiev N. G., Berkovich V. Kh., Propp V. D. Substantiating the parameters of open pit minetechnical system for Olympiadinsky goldfield exploitation. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal = News of the Higher Institutions. Mining Journal. 2019; 5: 5–13 (In Russ.). DOI: 10.21440/0536-1028-2019-5-5-13

Formulation of the problem. A new variant of horizontal slicing system with hydraulic filling and descending extraction of ore under flexible overlap.
Research aims to investigate the possibility to mine steeply pitching ore bodies of low thickness with a horizontal slicing system with hydraulic filling and descending extraction of ore under flexible overlap.
Methodology. Laboratory and analytical researches have been carried out on the influence of the moisture content of backfill material on its stability, density, internal friction coefficient, and, finally, the size of load from the part of the backfill array on the flexible overlap.
Results. It has been stated that the developed method of slicing under the flexible overlap is structurally simple and usable at steeply pitching ore bodies of low thickness mining in rockbump hazardous conditions.
Summary. The proposed technology can be used to mine steeply pitching ore bodies of low thickness in rockbump hazardous conditions. The use of the technology will make it possible to increase the safety of stoping and stop using expensive and scarce material – cement.

Key words: horizontal slices; descending extraction; flexible overlap; hydraulic filling; physical modeling; curvilinear prism; moisture content of a massif.

 

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Received 8 April 2019

 

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