| ArticleName |
System of directed loading and rupture of borehole walls for stress assessment in rock mass |
| Abstract |
Reliable information on the stress–strain behavior of rock mass is one of the top-priority tasks within applied geomechanics and geocontrol. This information enjoys wide application at the project stages and during implementation of all process flows included in mine construction, mineral mining and operation of various-purpose underground structures. Intelligence on the quality and quantity characteristics of stresses in the crust takes a perceptible part in prediction of possible dynamic events, as well as in selection and optimization of solutions on the technique and technology in ground control and stability of mining system structures. The developed procedure of directed loading and rupture of borehole walls for the stress assessment in rock mass can decrease labor content of measurements and increase their timeliness, and can provide the objective information on natural stresses to predict hazardous events induced by rock pressure and to backup geomechanical calculations with the required parameters. Considering the fact that the value of pressure applied by the developed system on the borehole walls in appearance of the Kaiser effect conforms with the value of stresses in intact rock mass, the proposed procedure can enable automated processing of data to eliminate errors and reduce the analysis time.
The study was supported by the Foundation for Promotion of Small Businesses in Sci-Tech Environment (Foundation for Promotion of Innovations), Agreement No. 14893GU/2019 dated December 18, 2019, MISIS, Moscow.
The author appreciates participation of the Director of the Research Center for Applied Geomechanics and Convergent Technologies in Mining, College of Mining, NUST MISIS, Doctor of Engineering Sciences, Professor V. A. Eremenko, Consulting Advisor to the Chairman of the Board of Global Asia Management, Kyrgyzstan, Doctor of Physics and Mathematics, Professor V. A. Mansurov and the Head of the Geotechnical Engineering Department of Vertex Gold Company, Kyrgyzstan, E. A. Babkin in this study. |
| References |
1. Shkuratnik V. L., Nikolenko P. V. Methods of identification of deflected mode of rock mass: Science and Education Course. Moscow : MGGU, 2012. 12 p.
2. Sjöberg J., Christiansson R., Hudson J. A. ISRM Suggested Methods for rock stress estimation—Part 2 : Overcoring methods. International Journal of Rock Mechanics and Mining Sciences. 2003. Vol. 40, Iss. 7-8. pp. 999–1010.
3. Haimson B. C., Cornet F. H. ISRM Suggested Methods for rock stress estimation—Part 3: Hydraulic fracturing (HF) and/or hydraulic testing of pre-existing fractures (HTPF). International Journal of Rock Mechanics and Mining Sciences. 2003. Vol. 40, Iss. 7-8. pp. 1011–1020.
4. Neverov S. A., Shaposhnik Yu. N., Neverov A. A., Konurin A. I. Integration of Russian and foreign rock mass stability classifications for validation of mine support systems. Gornyi Zhurnal. 2022. No. 1. pp. 56–61. DOI: 10.17580/gzh.2022.01.10
5. Eremenko V. A. Technical Council for Geomechanics : Outcomes. Gornyi Zhurnal. 2019. No. 4. pp. 97–98.
6. Leontev A. V., Popov S. N. Experience of practical application of measuring hydro-breach. Gornyi Zhurnal. 2003. No. 3. pp. 37–43.
7. Leontev A. V., Rubtsova E. V., Lekontsev Yu. M., Kachalskiy V. G. Measuring-computing complex “Gidrorazryv”. Journal of Mining Science. 2010. Vol. 46, Iss. 1. pp. 89–94.
8. Dymbrenov T. N., Eremenko V. A., Leizer V. I., Nasibullin R. R. Application of automated integrated geotechnical monitoring system in support of rib pillars of large cross-section and length in the Iletsk rock salt field. Gornyi Zhurnal. 2021. No. 9. pp. 36–40. DOI: 10.17580/gzh.2021.09.07
9. Leizer V. I., Yanbekov A. M., Umarov A. R., Vishnyakova K. M. Strength and deformation characteristics of high-accurate 3D printed physical models of honeycomb mine structures. GIAB. 2021. No. 11. pp. 28–36.
10. Contreras L.-F., Brown E. T. Slope reliability and back analysis of failure with geotechnical parameters estimated using Bayesian inference. Journal of Rock Mechanics and Geotechnical Engineering. 2019. Vol. 11, Iss. 3. pp. 628–643.
11. Brandi I. V., Barbosa M. R., Guimarães de Paula, Araújo R. N., Vieira de Moura R. S. et al. Instrumented geotechnical monitoring of a natural cave in a near mine operation—Towards a sustainable approach to mining and preservation of speleological heritage. Journal of Cleaner Production. 2019. Vol. 239. 118040. DOI: 10.1016/j.jclepro.2019.118040
12. Rocchi I., Gragnano C. G., Govoni L., Bittelli M., Gottardi G. Assessing the performance of a versatile and affordable geotechnical monitoring system for river embankments. Physics and Chemistry of the Earth, Parts A/B/C. 2020. Vol. 117. 102872. DOI: 10.1016/j.pce.2020.102872
13. Yong Zheng, Zheng-Wei Zhu, Wang Xiao, Quan-Xiang Deng. Review of fiber optic sensors in geotechnical health monitoring. Optical Fiber Technology. 2020. Vol. 54. 102127. DOI: 10.1016/j.yofte.2019.102127
14. Amadei B., Stephansson O. Rock Stress and its Measurement. Dordrecht : Springer, 1997. 490 p.
15. Leizer V. I., Eremenko V. A. System for oriented point loading and rupture of borehole walls without blasting. Patent RF, No. 2776543. Applied: 28.12.2021. Published: 22.07.2022. Bulletin No. 21.
16. Klishin V. I., Kurlenya M. V., Kokoulin D. I. Slotter. Patent RF, No. 129148. Applied: 22.02.2012. Published: 20.06.2013. Bulletin No. 17.
17. ASTM D4971-16. Standard Test Method for Determining In Situ Modulus of Deformation of Rock Using Diametrically Loaded 76-mm (3-in.) Borehole Jack. ASTM, 2017. 7 p.
18. Asanov V. A., Evseev A. V., T oksarov V. N., Beltyukov N. L. Experience of studying of acousticemission effects in salt rocks with the use of well hydro hoisting jack of Goodman. GIAB. 2010. No. 10. pp. 144–148.
19. Lavrov A. V., Shkuratnik V. L., Filimonov Yu. L. Acoustic-emission memory effect in rocks. Moscow : Izdatelstvo MGGU, 2004. 451 p.
20. Yoshikawa S., Mogi K. A new method for estimation of the crustal stress from cored rock samples: Laboratory study in the case of uniaxial compression. Tectonophysics. 1981. Vol. 74, Iss. 3-4. pp. 323–339.
21. Momayez M., Hassani F. P. Application of Kaiser Effect to measure in-situ stresses in underground mines. Rock Mechanics : Proceedings of the 33rd U.S. Symposium. Rotterdam : A. A. Balkema, 1992. pp. 979–988. |
