Forecast of the stability of the array of gold ore deposits based on the analysis of core material from exploration core drilling wells

During underground mining of gold deposits it is necessary to promptly assess the degree of stability and potential impact hazard of rocks. A common and reliable source of information on the structure of the deposit is photodocumented core material from exploration core drilling wells. In the course of research of geotechnical processes at gold ore deposits, the authors developed a method of analysis of the degree of core material destruction in order to identify high-tension areas of rock masses. The method is based on a synergetic scientific and methodological approach. The fractal structure of tectonic fractal fracturing obtained as a result of core material analysis is considered as a consequence of a self-organizing process, the nature of which is associated with the dynamics of tectonic movements of the deposit region. The areas of anomalously fractured core detected as a result of the analysis are used as a marker of zones of increased tension and instability of the rock mass. The proposed methodology has been tested in a number of fields in Siberia and the Far East. As an example of the use of the technique, the analysis of the field of destructive elements of the Karalveem field is considered illustratively. The method allows to make an assessment of the geomechanical situation in conditions of limited information about the tectonic structure of the gold ore deposit.

Keywords: drilling-hole assay, gold ore veins, fracturing, rock destruction, fractal struture, geotechnical conditions, preminig stresses of rocks, forecast and prediction of initial stresses level.
For citation:

Sosnovskaya E.L., Avdeev A.N. Forecast of the stability of the array of gold ore deposits based on the analysis of core material from exploration core drilling wells. MIAB. Mining Inf. Anal. Bull. 2020;(3-1):216-223. [In Russ]. DOI: 10.25018/0236-1493-2020-31-0-216-223.

Acknowledgements:
Issue number: 3
Year: 2020
Page number: 216-223
ISBN: 0236-1493
UDK: 622.831
DOI: 10.25018/0236-1493-2020-31-0-216-223
Article receipt date: 21.11.2019
Date of review receipt: 21.02.2020
Date of the editorial board′s decision on the article′s publishing: 20.03.2020
About authors:

Sosnovskaya E.L.1, Cand. Sci. (Geol. Mineral.), Senior Research Worker,
Avdeev A.N.1, Cand. Sci. (Eng.), Senior Research Worker, e-mail: avdeev0706@mail.ru,
1 The Institute of Mining of the Ural branch of the Russian Academy of Sciences, 620075, Ekaterinburg, Russia.

 

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