Ural Division, VNIMI, Yekaterinburg, Russia:

S. V. Morin, Head of Laboratory, Candidate of Engineering Sciences, info@ufvnimi.ru

The article presents the research data on rock movement and safe operation of buildings and structures in the influence zones of mineral mining in the Ural. The influence exerted by mining operations on the buildings and structures of the processing infrastructure at the Malyshev emerald deposit and on the guarded objects on the ground surface above the Gaya Mine is estimated. The author proposes the assessment procedure for stresses and strains on the ground surface in the area of guarded objects in the territories of base metal ore deposits. The procedure enables determining the maximum subsidence and displacements in downfolds, as well as horizontal deformations and tilting with regard to the applied systems of mining with backfill and caving, and with allowance for steeply dipping faults or open pit mines. Based on the calculations by the proposed procedure, safety of buildings is evaluated in the town of Uchaly subject to underground mining of the Novo-Uchaly deposit. Considering the instrumental monitoring and estimation of displacements and deformation of the ground surface, precautionary measures for civic buildings are prescribed. The spacing of ore body and boundary of dangerous stoping zone on a mine level is recommended to be determined with regard to the rock hardness ratio if the dip angle of tectonic faults is less than 60° and from the geometrical correlation of parameters with allowance for angles of displacements and dip of the ore body in case that faults have dip angles more than 60°. Deformation potential on construction sites above old underground excavations is evaluated. The recommendations on construction of residential and industrial buildings in the undermined areas are developed subject to the presence of voids in rock mass as well as depending on the rate of displacements and deformations on the ground surface.

1. Samarin V. P., Barsukov I. V., Morin S. V. Surveying to ensure safety of mining at the Malyshev emerald deposit. Bezopasnost truda v promyshlennosti. 2005. No. 7. pp. 14–16.
2. Barsukov I. V., Morin S. V., Samarin V. P. Geomechanical assessment of undermined rock mass based on instrumental monitoring data to maintain operability of guarded objects at mineral deposits in the Ural. Mining geomechanics and mine surveying : collection of scientific proceedings. Saint-Petersburg : VNIMI, 2009. pp. 204–210.
3. Morin S. V., Barsukov I. V. Geomechanical assessment of rock mass to prevent hazardous displacements and strains in hybrid coal mining. Izvestiya vuzov. Gornyi zhurnal. 2005. No. 3. pp. 27–32.
4. PB 07–269–98. Safety rules for structures and natural objects to be protected from hazardous influence of underground coal mining. Saint-Petersburg : VNIMI, 1998. 291 p.
5. Guidance on conservation of constructions and natural objects from harmful impact of underground mining during copper-ore deposits mining in the Urals. Moscow : Ministerstvo tsvetnoy metallurgii SSSR, 1978. 42 p.
6. Kuznetsov M. A., Gromov V. V., Kuznetsova E. I., Zelentsov S. N., Lukin G. P. Temporal safety regulations to protect structures and natural objects from impact of underground mining of base metal ores during unstudied process of movement in rocks. Leningrad, 1986. 76 p.
7. Instructions to protect objects and excavations from harmful influence of underground mining at the Berezovsky gold deposit in the Ural. Irkutsk, 1986. 58 p.
8. Temporal regulations to protect structures, natural objects and excavations from impact of underground mining at gold deposits. Irkutsk : Irgiredmet, 1996. 76 p.
9. Trofimov A. V., Vilchinskaya O. V., Breus K. E., Amosov I. V. Comprehensive study of physical and mechanical properties of rocks by modern methods and means for optimisation of mining and metallurgical operation s. Tsvetnye Metally. 2014. No. 9. pp. 16–23.
10. Cheskidov V. V., Lipina A. V., Melnichenko I. A. Integrated monitoring of engineering structures in mining. Eurasian Mining. 2018. No. 2. pp. 18–21. DOI: 10.17580/em.2018.02.05
11. Akimov A. G., Gromov V. V., Boshenyatov E. V., Zelentsov S. N., Kuznetsova E. I. et al. Geomechanical aspects of rock movement in underground mining of coal and ore. Saint-Petersburg, 2003. 166 p.
12. Kuznetsov M. A., Akimov M. G., Kuzmin V. I. et al. Rock movement at ore deposits. Moscow : Nedra, 1971. 224 p.
13. Kratch G. Rocks Movement and Protection of Anthropogenic Structures. Moscow : Nedra, 1978. 494 p.
14. Panzhin A. A., Sashurin A. D., Panzhina N. A., Efremov E. Yu. Practice of ground surface deformation monitoring at copper ore deposits. Gornyi vestnik Uzbekistana. 2017. No. 4(71). pp. 35–43.
15. Mukhamedgaliev A. F., Imansakipova B. B., Baigurin Zh. D., Milev I. Radar interferometry for monitoring ground subsidence. Gornyi Zhurnal. 2015. No. 4. pp. 76–81. DOI: 10.17580/gzh.2015.04.14
16. Aydan Ö., Ulusay R., Tokashiki N. A New Rock Mass Quality Rating System: Rock Mass Quality Rating (RMQR) and Its Application to the Estimation of Geomechanical Characteristics of Rock Masses. Rock Mechanics and Rock Engineering. 2014. Vol. 47, Iss. 4. pp. 1255–1276.
17. Cheskidov V. V., Lipina A. V., Melnichenko I. A. Integrated monitoring of engineering structures in mining. Eurasian Mining. 2018. No. 2. Р. 26–31. DOI: 10.17580/em.2018.02.05
18. Guo G.-L., Zhu X.-J., Zha J.-F., Wang Q. Subsidence prediction method based on equivalent mining height theory for solid backfilling mining. Transactions of Nonferrous Metals Society of China. 2014. Vol. 24, Iss. 10. pp. 3302–3308.
19. Kaizong Xia, Congxin Chen, Hua Fu, Yucong Pan, Yangyang Deng. Mining-induced ground deformation in tectonic stress metal mines: A case study. Engineering Geology. 2016. Vol. 210. pp. 212–230.