DOI 10.21440/2307-2091-2017-2-43-46 Publication Date 11.07.2017
Regularities of the tectonic stress field in the geological environment of the Krasnoturinsky ore district pdf
S. N. Tagil'tsev, T. N. Kibanova
For many years, the deposits of a number of minerals were developed and explored on the territory of the Krasnoturinsky ore district. The Severo-Peschansky iron ore deposit is located 4 km north of the Vorontsovsky gold deposit. All the objects on which the authors conducted the study of the orientation of cracks are at the top part of the geological section. Analysis of the elements of occurrence of fracture systems makes it possible to determine the orientation of the main maximum stresses in this part of the geological section. The authors carried out a large number of measurements of the stress-strain state (SSS) of rock massifs in the mines of the North-Peschansky deposit. These data allows analyzing the relationship between the values of the main stresses, the orientation of the axes of the main stresses, and the position of the measurement points in depth. Analysis of data on ore deposits suggests that the complex use of geological-structural and geomechanical methods for studying the stress-strain state of rock massifs allows reliable determining of the regularities of the SSS. The main directions of the main maximum stress (MMS) have sublatitudinal orientations (260°-270° and 280°-290°). In the near-surface part of the geological section, the stress field is transformed, and one can observe different directions of the SSS in different blocks of rocks. Basic SSS during the unloading of tectonic stresses often change their orientation by 90° and acquire a submeridional orientation. The remaining directions of the effect of maximum stresses are fixed in local areas and have an auxiliary type.
Keywords: stress-strain state; rock massifs; geological-structural and geomechanical methods; main directions of maximum stress.
REFERENCES
1. Abaturova I. V., Afanasiadi E. I. 2001, Opyt inzhenerno-geologicheskogo rayonirovaniya territorii stroitel'stva Vorontsovskogo GOKa s tsel'yu ratsional'nogo ispol'zovaniya i okhrany geologicheskoy sredy [Experience in engineering-geological zoning of the construction site of Vorontsovsky Mining and enrichment plant with the purpose of rational use and protection of the geological environment]. Izv. UGGGA. Geologiya i geofizika [News of the Ural State Mining University. Series Geology and Geophysics], pp. 241–246.
2. Abaturova I. V. 2011, Otsenka i prognoz inzhenerno-geologicheskikh usloviy mestorozhdeniy tverdykh poleznykh iskopaemykh gorno-skladchatykh oblastey [Estimation and forecast of engineering-geological conditions of deposits of solid minerals of mountain-folded areas], Ekaterinburg, 226 p.
3. Abaturova I. V., Afanasiadi E. I. 2003, Metodicheskie aspekty izucheniya karsta pri razvedke Vorontsovskogo zolotorudnogo mestorozhdeniya na Severnom Urale [Methodical aspects of karst exploration during exploration of the Vorontsovsky gold deposit in the Northern Urals]. Problemy sovremennoy inzhenernoy geologii: zapiski Gornogo instituta [Problems of modern engineering geology: Journal of Mining Institute], vol.153, pp. 43–45.
4. Gzovskiy M. V. 1975, Osnovy tektonofiziki [Fundamentals of tectonophysics], Moscow, 535 p.
5. Tagil'tsev S. N., Luk'yanov A. E. 2012, Gesmekhanicheskaya rol' tektonicheskikh razlomov i zakonomernosti ikh prostranstvennogo raspolozheniya [The gemechanical role of tectonic fractures and patterns of their spatial location]. Geomekhanika v gornom dele: dokl. nauch.-tekhn. konf. (12–14 okt. 2011 g.) [Geomechanics in mining: reports of scientific-technical conference(12-14 October 2011)], Ekaterinburg, pp. 26–39.
6. Hachay O. A., Khachay A. Yu. 2010, Construction of dynamical Model for Evolution of Rock Massive State as a Response on a Changing of stress-deformed State. Geophysical Research abstracts, vol. 12, p. 2662.
7. Tagil'tsev S. N., Luk'yanov A. E. 2010, Gidrogeologicheskoe rassloenie skal'nogo massiva v usloviyakh sovremennogo napryazhennogo sostoyaniya [Hydrogeological stratification of the rock massif in the conditions of the current stress state]. Litosfera [Litosfera], no. 2, pp. 122–129.
8. Sashurin A. D. 1995, Geomekhanicheskie modeli i metody rascheta sdvizheniy gornykh porod pri razrabotke mestorozhdeniy v skal'nykh massivakh: dis. ... d-ra tekhn. nauk [Geomechanical models and methods for calculating the movements of rocks in the development of deposits in rock massifs: dissertation of Doctor of technical sciences], Ekaterinburg, 357 p.
9. Vlokh N. P. 1994, Upravlenie gornym davleniem na podzemnykh rudnikakh [Control of mining pressure in underground mines], Moscow, 208 p.
