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.

Bibliography:

1. Babenko V. A., Funikova V. V. Methodological features of true triaxial compression testing of coarse-grained soil. Inzhenernaya geologiya Severo-Zapadnogo Kavkaza i Predkavkaz'ya: sovremennoe sostoyanie i osnovnye zadachi. Materialy Vtoroy regional'noy nauchno-prakticheskoy konferentsii [Engineering Geology of the Northwest Caucasus and Ciscaucasia: Existing Conditions and Major Challenges. The 2nd Regional Conference Proceedings], Krasnodar, 2015, pp. 114—118. [In Russ].

2. Asanov V. A., Udartsev A. A., Kablinov O. S., Kuz'minykh V. S. Geotechnical support of sinking design engineering at new sites of the Upper Kama Potash Salt Deposit. Innovatsionnye napravleniya v proektirovanii gornodobyvayushchikh predpriyatiy: geomekhanicheskoe obespechenie proektirovaniya i soprovozhdeniya gornykh rabot. VIII Mezhdunarodnaya nauchnoprakticheskaya konferentsiya, sbornik nauchnykh trudov [Innovative Trends in Mine Planning and Design: Geomechanical Support and Supervision of Mining. VIII International Scientific and Practical Conference. Collection of scientific papers], Saint-Petersburg, 2017, pp. 111—117. [In Russ].

3. Prosenya A. G., Verbilo P. E. Numerical modeling-based assessment of strength of block rock mass. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal. 2016, no. 4, pp. 47—54. [In Russ].

4. Gogolin V. A. Deformation characteristics and strength properties of brittle rocks in compression. Bulletin of the Kuzbass State Technical University. 2016, no. 3, pp. 3—7. [In Russ].

5. Makarov V. V., Golosov A. M., Ksendzenko L. S., Opanasyuk N. A. Reverse deformations of highly compressed rock samples: Mechanism and precursors. Nelineynye geomekhaniko-geodinamicheskie protsessy pri obrabotke mestorozhdeniy poleznykh iskopaemykh na bol'shikh glubinakh. Materialy 4-y Rossiysko-Kitayskoy nauchnoy konferentsii [Nonlinear Geomechanics and Geodynamics in Deep-Level Mining. The 4th Sino-Russia Conference Proceedings], Vladivostok, 2014. [In Russ].

6. Korshunov V. A., Petrov D. N., Yastrebova K. N. Computational method for rock failure envelope plotting based on the test data with spherical indenters. Innovatsionnye napravleniya v proektirovanii gornodobyvayushchikh predpriyatiy: geomekhanicheskoe obespechenie proektirovaniya i soprovozhdeniya gornykh rabot. VIII Mezhdunarodnaya nauchno-prakticheskaya konferentsiya, sbornik nauchnykh trudov [Innovative Trends in Mine Planning and Design: Geomechanical Support and Supervision of Mining. VIII International Scientific and Practical Conference. Collection of scientific papers], Saint-Petersburg, 2017, pp. 256—264. [In Russ].

7. Brotons V., Tomas R., Ivorra S., Grediaga A., Martinez-Martinez J., Benavente D., GomezHeras M. Improver correlation between the static and dynamic elastic modulus of different types of rocks. Materials and Structures. 2016, vol. 49, no. 8, pp. 3021—3037. DOI: 10.1617/ s11527-015-0702-7.

8. Trushko V. L., Protosenya A. G., Ochkurov V. I. Prediction of the ge-omechanically safe parameters of the stopes during the rich iron ores development under the complex mining and geological conditions. International Journal of Applied Engineering Research. 2016, vol. 11, no. 23, pp. 11095—11103.

9. Trushko V. L., Protosenya A. G., Trushko O. V. Stress-strain behavior of the workings during the rich iron ores development under the confined aquifers. International Journal of Applied Engineering Research. 2016, vol. 11, no. 23, pp. 11153—11164.

10. Wagner H., Ladinig T., Blaha H. Design considerations for pillar systems in deep mines. Geomechanics and Tunnelling. 2016, vol. 9, no. 5, pp. 524–528. DOI: 10.1002/geot.201600045.

11. Verbilo P. E. Numerical investigation of the scale effect and REV of jointed rock masses to conditions of apatite-nepheline ore «Plateau Rasvumchorr» JSC «Apatit». Scientific Reports on Resource Issues. 2016, vol. 1, pp. 117—124.

12. Yang Jian Ping, Chen Wei Zhong, Yang Dian Sen, Yuan Jing Qiang Numerical determination of strength and deformability of fractured rock mass by FEM modeling. Computers and Geotechnics. 2015, vol. 64, pp. 20—31.

13. Ivars D. M., Pierce M. E., Darcel C., Reyes-Montes J., Potyondy D. O., Young R. P., Cundall P. A. The synthetic rock mass approach for jointed rock mass modelling. International Journal of Rock Mechanics and Mining Sciences. 2011, vol. 48, no. 2, pp. 219—244. DOI: 10.1016/j.ijrmms.2010.11.014.

14. Wittke W. Rock mechanics based on an anisotropic jointed rock model (AJRM). Berlin: Wiley Ernst & Sohn, 2014. 865 p.

15. Tianhong Yang, Peitao Wang, Tao Xu, Qinglei Yu, Penghai Zhang, Wenhao Shi, Gaojian Hu Anisotropic characteristics of jointed rock mass. A case study at Shirengou iron ore mine in China. Tunneling and Underground Space Technology. 2015, vol. 48, pp. 129—139.

16. Kouakou N. M., Cuisinier O., Masrouri F. Estimation of the shear strength of coarsegrained soils with fine particles. Transportation Geotechnics. 2020, vol. 25. DOI: 10.1016/j. trgeo.2020.100407.

17. Popov V. N., Shpakov L. S., Yunakov Yu. L. Upravlenie ustoychivost'yu kar'ernykh otkosov [Pitwall slope stability control], Moscow, Izd-vo «Gornaya kniga», 2008, 683 p.

18. Babello V. A. Improvement of strength assessment procedure for rocky ground on a full scale. News of higher educational institutions. Construction. 2004, no. 5, pp. 115—118. [In Russ].

19. Chernyak E. R., Kal'bergenov R. G., Chulanov V. V. Field techniques for studying strength properties of soils. Issledovanie inzhenerno-geologicheskikh svoystv gruntov: sbornik nauchnykh trudov [Study of geotechnical properties of soils: Collection of scientific papers], Moscow, PNIIS GOSSTROYA SSSR, 1986, pp. 8—16.

20. Kubetskiy V. L., Korolev M. V. Improvement of self-descriptiveness of hoop loading tests. Inzhenernye izyskaniya. 2018, vol. 12, no. 7-8, pp. 26—35. [In Russ].

21. Babello V. A. Patent RU 2276343. 10.05.2006. [In Russ].

22. Berezantsev V. G. Raschet osnovaniy sooruzheniy [Structure base design], Leningrad, Stroyizdat, 1970, 207 p.

Подписка на рассылку

Раз в месяц Вы будете получать информацию о новом номере журнала, новых книгах издательства, а также о конференциях, форумах и других профессиональных мероприятиях.