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Название Methodology for determining displacement zone parameters in mining diamond deposits in Yakutia using systems with cemented backfill
DOI 10.17580/gzh.2020.01.18
Автор Bokiy I. B., Zoteev O. V., Pul V. V., Fedyanin A. S.
Информация об авторе

Yakutniproalmaz Institute, ALROSA, Mirny, Russia:

I. B. Bokiy, Head of Laboratory, Candidate of Physico-Mathematical Sciences, bokiyb@alrosa.ru

V. V. Pul, Advanced Manufacturing Engineer


Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia:

O. V. Zoteev, Chief Researcher, Professor, Doctor of Engineering Sciences


ALROSA, Mirny, Russia:
A. S. Fedyanin, Chief Geomechanic, Candidate of Engineering Sciences


The geological structure of the Aikhal kimberlite pipe developed by ALROSA is characterized. The Aikhal deposit was discovered in 1960. Mining with open pit method was started in 1961 and finished by the end of 1997. The mined-out pit had the actual elevation of +235 m in the south west and +194.5 m in the north east (the surface elevation was +500 m). The mined-out Aikhal pit has the west-eastward extension in plan view, with the actual elevations of the bottom at +235 m in the south west, +230 – +205 m in the center and +195 m in the north east. The most of the strain–strain modeling data are interpreted in terms of composite stresses and strains, which allow judging on failure conditions. As a rule, these data poorly agree with classical calculation and in-situ observation results. This article proposes the solution to this problem and hypothesizes that prediction of displacements requires interpretation of additional strains (strains at unloading) governed by mineral mining processes and represented by opening of existing fractures, which results in weakening and failure of rock mass. The boundaries of hazardous deformation zones can be estimated based on the isolines of additional strains. The composite strains characterize alterations in enclosing rock mass, i.e. the change in the rock mass shape and volume, as well as the capability of new fractures to form.

Ключевые слова Kimberlite pipe, mined-out space, movement processes, cemented backfilling, strains
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