Determination of strength of dams and stockpiles: Concept and approaches

Improvement of the stability analyses of soil bodies using advanced computer program products needs methodologies and scientifically justified approaches to the reliable determination of mechanical properties of soils. Currently there are different methods to determine soil strength. Mechanical properties of soils differ essentially subject to methodological approaches and test modes. As the best admissible method to determine strength of soil bodies of dams and stockpiles, we selected the method of soil cutting on a full scale. In this regard, we implemented two different approaches to determining internal friction and cohesion of soil bodies at two mining facilities in Transbaikalia. In the first case, the soil cutting tests were carried out on a bench tester without a circumferencial load device; in the second case, the ring load-applying device was used to simulate pressure of overlying soil. The novelty of the authorial approach consists in the fact that the soil cutting conditions are equivalent to the real-life geomechanical processes in surrounding soil mass around a shear hoop. The results demonstrate essentially different strength characteristics obtained in test soils. The devices and methods used to determine soil strength improve the accuracy and self-descriptiveness of geomechanical tests, which ensures the required reliability and economic efficiency of dam and stockpile designs.

Keywords: damaged structure soil, soil body stability, bench testing, mechanical properties, stress–strain behavior, circumferencial load application, geomechanical tests, soil strength characteristics.
For citation:

Babello V. A., Beydin A. V., Oveshnikov Yu. M. Determination of strength of dams and stockpiles: Concept and approaches. MIAB. Mining Inf. Anal. Bull. 2022;(11):5-19. [In Russ]. DOI: 10.25018/0236_1493_2022_11_0_5.

Acknowledgements:

The study was supported by the Council for Research and Innovation of the Transbaikal State University, Grant No. 328-GR.

Issue number: 11
Year: 2022
Page number: 5-19
ISBN: 0236-1493
UDK: 622.1:550.82
DOI: 10.25018/0236_1493_2022_11_0_5
Article receipt date: 02.12.2021
Date of review receipt: 04.07.2022
Date of the editorial board′s decision on the article′s publishing: 10.10.2022
About authors:

V.A. Babello1, Dr. Sci. (Eng.), Professor, e-mail: chita_bva@mail.ru,
A.V. Beydin, Cand. Sci. (Eng.), Director of Central Research Laboratory, Priargunsky Industrial Mining and Chemical Union, 674673, Krasnokamensk, Russia, e-mail: BeidinAV@ppgho.ru, ORCID ID: 0000-0003-4196-1695,
Yu.M. Oveshnikov1, Dr. Sci. (Eng.), Professor, e-mail: ogr_chitgu@mail.ru,
1 Transbaikal State University, 672039, Chita, Russia.

 

For contacts:

A.V. Beydin, e-mail: BeidinAV@ppgho.ru.

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