Assessment of rock mass behavior based on its geology analysis and stress state modeling

Authors: Бабелло В. А., Бейдин А. В., Овсейчук В. А., Смолич С. В.

Influence of determination error of physical and mechanical properties on stress calculation results in rock mass is discussed. The stress state of rock mass is estimated and justified with results of its structure and tectonics studies. The numerical modeling results on natural stresses in the Streltsov ore field, obtained using finite-element program analysis are presented. The modeling results are compared with in-situ measurements in the elements of underground excavations by the method of borehole slotter. The effect of change in parameters of mechanical properties of rocks on the value of calculated stresses is assessed. The geomechanical model reveals nonuniform zones of vertical and horizontal natural stresses, their nonlinear distributions at different depths and distinctions from the conventional knowledge on stress state of rock mass. The mechanism of horizontal tectonic stresses at great depths is validated, which allows prediction of rockburst hazard by geological signs. As a result, the scheme of the stress–strain behavior of the test rock mass is presented. The three-stage process is proposed for the numerical modeling of stress state in rocks mass, which makes it possible to take into account geotechnical situation at different moments of time.

Keywords: Rock mass, natural stresses, physical and mechanical properties of rocks, numerical modeling, geomechanical model, tectonic scheme of rock mass.
For citation:

Babello V. A., Beydin A. V., Smolich S. V., Ovseychuk V. A. Assessment of rock mass behavior based on its geology analysis and stress state modeling. MIAB. Mining Inf. Anal. Bull. 2019;(12):41-54. [In Russ]. DOI: 10.25018/0236-1493-2019-12-0-41-54.

Acknowledgements:
Issue number: 12
Year: 2019
Page number: 41-54
ISBN: 0236-1493
UDK: 622.1:550.82
DOI: 10.25018/0236-1493-2019-12-0-41-54
Article receipt date: 17.10.2019
Date of review receipt: 04.11.2019
Date of the editorial board′s decision on the article′s publishing: 11.11.2019
About authors:

V.A. Babello1, Dr. Sci. (Eng.), Professor,
A.V. Beydin1, Cand. Sci. (Eng.), Assistant Professor,
e-mail: beydin@mail.ru,
V.A. Ovseychuk1, Dr. Sci. (Eng.), Professor,
e-mail: mks3115637@yandex.ru,
S.V. Smolich1, Cand. Sci. (Eng.), Assistant Professor,
1 Transbaikal State University, 672039, Chita, Russia.

For contacts:

A.V. Beydin, e-mail: beydin@mail.ru.

Bibliography:

1. Balek A., Sashourin A. In-situ rock mass stress-state measurements in scales of mineral deposits: problem-solving. E3S Web of Conferences. 2018. Vol. 56, no 02004. DOI: 10.1051/e3sconf/20185602004.
2. Yakovlev V. L., Yakovlev A. V. Estimate of stress state in rock masses adjacent to open pit walls. Journal of Mining Science. 2007;43(3);247—253.
3. Zubkov A. V., Zoteev O. V., Smirnov O. Yu., Lipin YA. I., Khudyakov S. V., Krinitsyn R. V., Selin K. V., Ershov A. A., Valiullov L. R. Regularities of formation stessed-deformed state of the Urals Eath’s crust in time duration. Litosfera. 2010, no 1, pp. 84—93. [In Russ].
4. Reznikov M. A. Variatsionnyy metod v raschetakh ustoychivosti otkosov gornykh porod [The variational method in calculation of slope stability rock mass], Moscow, Nedra, 1991, 104 p.
5. Eremin G. M. Increasing of accuracy and reliability of definition of strength characteristics of rocks and their properties during rock massif deformations. Gornyy informatsionno-analiticheskiy byulleten’. 2000, no 9, pp. 31—33. [In Russ].
6. Kurlenya M. V. Tekhnogennye geomekhanicheskie polya napryazheniy [Man-made geomechanical stress fields], Novosibirsk, Nauka, 2005, 264 p.
7. Kodama J., Miyamoto T., Kawasaki S., Fujii Y., Kaneko K., Hagan P. Estimation of regional stress state and Young’s modulus by back analysis of mining-induced deformation. International Journal of Rock Mechanics and Mining Sciences. 2013;63:1—11. DOI: 10.1016/j. ijrmms.2013.05.007.
8. Figueiredo B., Cornet F. H., Lamas L., Muralha J. Determination of the stress field in a mountainous granite rock mass. International Journal of Rock Mechanics and Mining Sciences. 2014;72:37—48. DOI: 10.1016/j.ijrmms.2014.07.017.
9. Gushchenko O. I. Kinematic principle of reconstruction of the princi-pal stresses direction (by geological and seismic data). Doklady Akademii nauk SSSR. 1975. Vol. 225, no 3, pp. 56—67. [In Russ].
10. Savchenko S. N. To the problem of estimating the value of horizontal tectonic stresses in the Eurasian litohospheric plate. Problemy razrabotki mestorozhdeniy poleznykh iskopaemykh i osvoeniya podzemnogo prostranstva Severo-Zapada Rossii. Ch. 3 [On the estimation of horizontal tectonic stresses in the Eurasian lithospheric plate. Problems of development of mineral deposits and development of the underground space of the North-West of Russia. Part 3], Apatity,
GoI KNTS RAN, 2001, pp. 26—33.
11. Zborshchik M. P., Nazimko V. V. Calculation by the finite element method of stresses and strains around a mine protected in collapsed rocks. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 1980, no 3, pp. 32—36. [In Russ].
12. Vlokh N. P. Upravlenie gornym davleniem na podzemnykh rudnikakh [Control of mining pressure in underground mines], Moscow, Nedra, 1994, 208 p.
13. Zubkov A. V. Geomekhanika i geotekhnologiya [Geomechanics and geotechnology], Ekaterinburg, UrO RAN, 2001, 335 p.
14. Lizunkin V. M., Lizunkin M. V., Sosnovskaya E. L., Beydin A. V. The research of natural stresses in Streltsovsky ore field deposit. Gornyy informatsionno-analiticheskiy byulleten’. 2014, no 4, pp. 207—215. [In Russ].

15. Lizunkin M. V. Determination of initial (natural) voltages rock mass in the Streltsovsky and Antey deposits. Gornyy informatsionno-analiticheskiy byulleten’. 2016, no 3, pp. 290—296. [In Russ].
16. Ovseychuk V. A., Medvedev V. V., Beydin A. V., Podoprigora V. E., Pirogov G. G. Kompleksnaya tekhnologiya otrabotki skal'nykh uranovykh rud s elementami podzemnoy rudopodgotovki [Complex technology of mining urani-um ore rock with elements of underground ore preparation], Chita, ZabGU, 2018, 343 p.
17. Mel'nikov I. V. Mineralogo-geokhimicheskie osobennosti protsessa formirovaniya gidrotermal'nykh uran-molibdenovykh mestorozhdeniy. Geokhimiya protsessov migratsii rudnykh elementov [Mineralogical and geochemical characteristics of the process of forming the hydrothermal uranium and molybdenum deposits. Geokhimiya protsessov migratsii rudnykh elementov], Moscow, Nauka. 1977, pp. 47—64.
18. Ishchukova L. P., Igoshin YU. A., Avdeev B. V. Geologiya Urulyunguevskogo rudnogo rayona i molibden-uranovykh mestorozhdeniy Strel'tsovskogo rudnogo polya [Geology of the Urulyunguevsky ore region and molybdenum-uranium deposits of the Streltsovsky ore field], Moscow, Geoinformmark, 1998, 526 p.
19. Golubev A. I., Seletskiy A. V. On the selection of soil model for ge-otechnical calculations. Nauchno-prakticheskie i teoreticheskie problemy v geotekhnike: mezhvuzovskiy tematicheskiy sbornik trudov. T. 2 [Scientific-practical and theoretical problems in geotechnics: interuniversity thematic collection of works. Vol. 2], Saint-Petersburg, SPbGASU, 2009, pp. 6—10.
20. Bokiy I. B., Zoteev O. V., Pul V. V., Pul E. K. Selection of basic data for numerical modeling of rock mass stress state at Mirny Mining and Processing Works, Alrosa Group of Companies. IOP Conference Series: Earth and Environmental Science, 2018, Vol. 134, no 012008. DOI: 10.1088/1755-1315/134/1/012008.
21. Strokova L. A. Opredelyayushchie uravneniya dlya gruntov [Сonstitutive equation for soils], Tomsk, TPU, 2009, 150 p.

Mining World Russia
Subscribe for our dispatch