Journals →  Gornyi Zhurnal →  2021 →  #10 →  Back

FROM THE OPERATIONAL EXPERIENCE OF THE MINING COMPANIES AND THE ORGANIZATIONS
MAYAK MINE, NORNICKEL’S POLAR DIVISION
ArticleName Comparative analysis of spatial locations of defects detected in rock mass by different methods
DOI 10.17580/gzh.2021.10.02
ArticleAuthor Marysyuk V. P., Sergunin M. P., Kuzmin S. V., Nevolin I. S.
ArticleAuthorData

Geodynamic Safety Center, NorNickel’s Polar Division, Norilsk, Russia:

V. P. Marysyuk, Chief Geotechnical Engineer—Director, Candidate of Engineering Sciences, marysyukvp@nornik.ru
M. P. Sergunin, Head of Department of Geotechnical Supervision of Mining

 

NorNickel Technical Services, Saint-Petersburg, Russia:
S. V. Kuzmin, Chief Geomechanic, Head of Geomechanics Group, Candidate of Engineering Sciences
I. S. Nevolin, Senior Geomechanic in Geomechanics Group

Abstract

The accurate analysis and assessment of the rock mass behavior reduce geotechnical risks in deeplevel mining and critical civil engineering. The most wide-spread method of engineering investigation is the core analysis, including core orientation. The acoustic methods (ATV) are unchallengeably advantageous over the conventional core analyses. NorNickel’s Polar Division implements geological surveys using all methods available. The authors compare the spatial locations of rock mass defects determined by the method of acoustic scanning of well walls and by the core orientation analysis. The conclusions are verified using the data of surveys implemented by the two methods in the same well. The authors arrive to a conclusion on the higher reliability of the acoustic scanning as against the core orientation analysis. The ATV method more reliably detects more defects, and the total difference in the number of the detected joints is 36 %. The standard deviation in the number of joints in 5 m-long intervals is on the average 3.42. The calculated values of the global joint system show erroneous determination of location of the main joint system. The range of the accurate location error of the main joint system makes 4° for the dip angle and 27° for the dip azimuth. The ATV method offers more accurate interpretation and detection of induced defects, and eliminates errors of coring depth determination.

keywords Oriented drilling, well walls, acoustic scanning method, joint system
References

1. Trofimov A. V., Kirkin A. P., Rumyantsev A. E., Yavarov A. V. Use of numerical modelling to determine optimum overcoring parameters in rock stress-strain state analysis. Tsvetnye Metally. 2020. No. 12. pp. 22–27. DOI: 10.17580/tsm.2020.12.03
2. Kalmykov V. N., Strukov K. I., Kulsaitov R. V., Esina E. N. Geomechanical features of underground mining at Kochkar deposit. Eurasian Mining. 2017. No. 2. pp. 12–15. DOI: 10.17580/em.2017.02.03
3. Zuev B. Yu., Zubov V. P., Fedorov A. S. Application prospects for models of equivalent materials in studies of geomechanical processes in underground mining of solid minerals. Eurasian Mining. 2019. No. 1. pp. 8–12. DOI: 10.17580/em.2019.01.02
4. Yuezheng Zhang, Hongguang Ji, Wenguang Li, Kuikui Hou. Research on Rapid Evaluation of Rock Mass Quality Based on Ultrasonic Borehole Imaging Technology and Fractal Method. Advances in Materials Science and Engineering. 2021. Vol. 2021. DOI: 10.1155/2021/8063665
5. Wang P., Feng X. L., Cai Y. S. Distribution of borehole joints by borehole ultrasonic technology in Pulang copper deposit. Mining & Metallurgy. 2019. Vol. 28, No. 2. pp. 1–5.
6. Wang J. C., Tao D. X., Huang Y. Q. Borehole imaging method based on ultrasonic synthetic aperture technology. Rock and Soil Mechanics. 2019. Vol. 40, No. S1. pp. 557–564.
7. Mao Jizhen. Ultrasonic imaging borehole TV and its application to rock engineering. Chinese Journal of Rock Mechanics and Engineering. 1994. Vol. 13(3). pp. 247–260.
8. Su R., Zong Z.-H., Jchwang Wang. Acoustic borehole televiewer with high resolution and its application to deep formation for geological disposal of nuclear waste. Chinese Journal of Rock Mechanics and Engineering. 2005. Vol. 24, No. 16. pp. 2922–2928.
9. Wang Chuan-ying, Law K. T. Review of borehole camera technology. Chinese Journal of Rock Mechanics and Engineering. 2005. Vol. 24, No. 19. pp. 42–50.
10. Xiyong Wang, Dongwei Li, Gong Cheng, Pengcheng Luo. Study on Structural Plane of Deep Rock Mass in Xinchang Preferred Site for Undergro und Research Laboratory on Geological Disposal of High-Level Radioactive Waste in China. IOP Conference Series: Earth and Environmental Science. 2018. Vol. 170. DOI: 10.1088/1755-1315/170/3/032097
11. Tagnon B. O., Assoma T. V., Mangoua J. M. O., Douagui A. G., Kouamé F. K. et al. Contribution of SAR/RADARSAT-1 and ASAR/ENVISAT images to geological structural mapping and assessment of lineaments density in Divo-Oume area (Côte d’Ivoire). The Egyptian Journal of Remote Sensing and Space Science. 2020. V ol. 23, Iss. 2. pp. 231–241.
12. Sabyanin G. V., Balandin V. V., Trofimov A. V., Kuzmin S. V. Geomechanical survey procedure for Oktyabrsky mine. Gornyi Zhurnal. 2020. No. 6. pp. 11–16. DOI: 10.17580/gzh.2020.06.01
13. Geomechanical core documentation manual. SRK Consulting, 2009. 46 p.
14. Sergunin M. P., Darbinyan T. P., Shilenko S. Yu., Grinchuk I. P. Digital surface modeling of an ore pass to reveal orientation of principal stresses and effect of rock fracturing. Gornyi Zhurnal. 2020. No. 6. pp. 28–32. DOI: 10.17580/gzh.2020.06.04
15. Dips. Rocscience Inc., 2021. Available at: https://www.rocscience.com/software/dips (accessed: 12.09.2021).
16. Goodman R. E. Block theory and its application to rock engineering. Englewood Cliffs : Prentice-Hall, 1985. 338 p.

Language of full-text russian
Full content Buy
Back