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ArticleName Geotechnical prerequisites for safe and efficient accessing and mining of thick coal seam in highlands
DOI 10.17580/gzh.2021.01.18
ArticleAuthor Mansurov V. A., Zhakanov K. K., Ermoshkin N. N.

Vertex Gold Company LLC, Bishkek, Kyrgyzstan:

V. A. Mansurov, Geotechnical Advisor, Professor, Doctor of Physical and Mathematical Sciences,
K. K. Zhakanov, Deputy Head of Geotechnical Department—Chief Geotechnical Engineer in Open Pit Mining


Global Dzhamgyr Mining LLC, Bishkek, Kyrgyzstan:
N. N. Ermoshkin, CEO


Bel-Alma deposit is located in the Batken region in Kyrgyzstan. Orographycally, the deposit occurs on the south shoulder of the Kichik–Alai ridge, 1–1.5 km away from the cognominal river. The local relief is high-mountain, rocky and heavily broken. Geologically, the deposit is composed of the Upper Paleozoic rocks, which underlay the stratified Meso-Cenozoic deposits, and amorphous loose overburden. The productive strata is the bottom range of the Sogul series of the Jurassic system. The total thickness of the series in the cross-section is 102.7 m. The Sogul series rocks feature erosion and distinct structural unconformity in the Paleozoic residuum. The overlying strata are represented by red conglomerates and sandstone of the Upper Cretaceous age. The geotechnical estimation of the properties of rocks composing the study area in Bel-Alma deposit is performed. The rock mass structure is determined using geological exploration cores. The parameters of stable pit wall and benches are preliminarily optimized and will be included in the ultimate pit limit design.

keywords Coal deposit, pit walls, stability estimation, geotechnical data, structural modeling, fault

1. Karzulovic A., Sepúlveda R. Open Pit Problems in Engineering Practice. Proceedings of the 2007 International Symposium on Rock Slope Stability in Open Pit Mining and Civil Engineering. Perth : Australian Centre for Geomechanics, 2007. pp. 201–211.
2. Eremenko V. A., Neguritsa D. L. Efficient and active monitoring of stresses and strains in rock masses. Eurasian Mining. 2016. No. 1. pp. 21–24. DOI: 10.17580/em.2016.01.02
3. Smirnov N. A. New capabilities of the sonic logs set for oil well logging. Karotazhnik. 2016. No. 9(267). pp. 64–72.
4. Pleshkov L. D., Burmistrov A. D., Kostytsin V. I., Gershanok V. A. Possibilities of scanning acoustic logging for evaluating the state of a well casing. Geologiya i poleznye iskopaemye Zapadnogo Urala. 2020. No. 3(40). pp. 168–172.
5. Shumilov A. V. Geophysical monitoring the technical condition of the lining operating horizontal wells. Geofizika. 2019. No. 5. pp. 72–80.
6. Alifov S. G. Borehole drilling analysis in a mineral field. Akademicheskiy zhurnal Zapadnoy Sibiri. 2016. Vol. 12, No. 6(67). pp. 27–28.
7. RocLab 1.0: Rock Mass Strength Analysis using the Generalized Hoek-Brown failure criterion. Rocscience. Available at: (accessed: 15.06.2020).

8. Hustrulid W. A., McCarter M. K., Van Zyl D. J. A. Slope Stability in Surface Mining. Colorado : Society for Mining, Metallurgical and Exploration, 2000. 442 p.
9. RocData Overview. Rocscience. Available at: (accessed: 15.06.2020).
10. Hoek E., Brown E. T. Empirical Strength Criterion for Rock Masses. Journal of the Geotechnical Engineering Division. 1990. Vol. 106. pp. 1013–1035.
11. Hoek E., Brown E. T. Practical estimates of rock mass strength. International Journal of Rock Mechanics and Mining Science. 1997. Vol. 34, No. 8. pp. 1165–1186.
12. Shu-Qian Duan, Xia-Ting Feng, Quan Jiang, Guo-Feng Liu, Shu-Feng Pei, Yi-Lin Fan. In Situ Observation of Failure Mechanisms Controlled by Rock Masses with Weak Interlayer Zones in Large Underground Cavern Excavations Under High Geostress. Rock Mechanics and Rock Engineering. 2017. Vol. 50, Iss. 9. pp. 2465–2493.
13. Behnia M., Masoud Cheraghi Seifabad. Stability analysis and optimization of the support system of an underground powerhouse cavern considering rock mass variability. Environmental Earth Sciences. 2018. Vol. 77, Iss. 18. 645. DOI: 10.1007/s12665-018-7835-2
14. Karampinos E., Hadjigeorgiou J., Turcotte P. Discrete Element Modelling of the Influence of Reinforcement in Structurally Controlled Squeezing Mechanisms in a Hard Rock Mine. Rock Mechanics and Rock Engineering. 2016. Vol. 49, Iss. 12. pp. 4869–4892.
15. Weijian Yu, Genshui Wu, Baifu An. Investigations of Support Failure and Combined Support for Soft and Fractured Coal-Rock Tunnel in Tectonic Belt. Geotechnical and Geological Engineering. 2018. Vol. 36, Iss. 6. pp. 3911–3929.

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