Use of highwall mining systems is discussed. Some problems connected with more comprehensive study into geology of coal seams and enclosing rock mass in Elegesta coal field are solved. The most critical objectives are confirmation of coal seam thickness and occurrence condition, tectonic structure, physical and mechanical properties of exposed rocks in roof and floor, width of rib pillars, water inflow rate in underground excavations, limits and quality of power-generating and coking coal, ignitability and explosion hazard of coal dust. Useful quality and process properties of produced coal are analyzed, and potential product delivery to consumers is discusses. Basic parameters of mining with highwall systems are determined. From calculations, the minimum parameters for pillars in highwalls to 180 m long (average mining depth is to 60 m below ground surface) are: rib pillar width is 3.1 m; barrier pillar width is 5.8 m; spacing of barrier pillars is 70.0 m. On Ulug seams, the highwall miner cuts 14 rooms and produces 115.65 thou t of gas-fat and fat coal. On seam 6.11, the highwall miner cuts 10 rooms and produces 47.5 thou t of gas-fat and fat coal. The process properties of coal in their bulk treatment by operating preparation plants are determined, and their useful quality for chemical recovery industry are refined.

For citation: Demchenko A. V., Derevyashkin I. V. Field experience of highwall mining system in Elegesta coal field, Republic of Tuva. MIAB. Mining Inf. Anal. Bull. 2019;(6):79-87. [In Russ]. DOI: 10.25018/0236-1493-2019-06-0-79-87.


Highwall mining system, coal, Elegesta coal field, coal seam, extraction block, barrier pillar, rib pillar.

Issue number: 6
Year: 2019
ISBN: 0236-1493
UDK: 622.27.326
DOI: 10.25018/0236-1493-2019-06-0-79-87
Authors: Demchenko A. V., Derevyashkin I. V.

About authors: A.V. Demchenko, Cand. Sci. (Eng.), Assistant Professor, e-mail:, I.V. Derevyashkin, Dr. Sci. (Eng.), Professor, e-mail:, Moscow polytechnic university, 107023, Moscow, Russia. Corresponding author: A.V. Demchenko, e-mail:


1. Netsvetaev A. G., Grigoryan A. A., Pruzhina D. I. Development of technology of uninhabited coal mining with the use of SMH complexes. Gornaya promyshlennost'. 2015, no 4 (122), pp. 87.

2. Netsvetaev A. G., Grigoryan A. A., Pruzhina D. I. Equipment and technology for uninhabited coal mining from open pit mining. Ugol'. 2015, no 10 (1075), pp. 36—40.

3. Dixit S., Manoj P. Highwall Mining in India. Mine planning and equipment selection. Springer International Publishing Switzerland, 2014, pp. 175—187.

4. Shen B., Duncan Fama M. E. Review of highwall mining experience in Australia and a case study. ISRM International Symposium, Melbourne; Australia, 2000.

5. Matsui K., Sasaoka T., Shimada H., Ueda J. T., Kramadibrata J. S., Sulistianto B. Highwall mining systems at surface coal mines in Indonesia. Coal International, 2008, No. 256 (3), pp. 28—31.

6. Chandar K. R., Kumar B. G. Effect of width of gallery of highwall mining on stability of highwall. A numerical modelling approach. International Journal of mining and mineral engineering2014, No. 5 (3), pp. 212—228.

7. Shen B. Highwall mining stability. Project of mine disaster prevention and control, 2014, No. 17, pp. 25—37.

8. Sasaoka T., Karian T., Hamanaka A., Shimada H., Matsui K. Application of highwall mining system in weak geological contidion. International journal of coal science and technology, 2016, No. 3 (1), pp. 311—321.

9. Netsvetaev A. G., Grigoryan A. A., Pruzhina D. I. The estimated and the actual parameters of the technology SMH for testing Kirgizki layer 63 on the cut «Kuprinsky». Gornaya promyshlennost'2014, no 5 (117), pp. 50. [In Russ].

10. Netsvetaev A. G., Grigoryan A. A., Pruzhina D. I. The algorithm of calculation of geome-chanical parameters, ensuring the safety of unmanned mining technology coal using SMH. Ugol'2015, no 1 (1066), pp. 25—29. [In Russ].

11. Rekomendatsii po obespecheniyu geomekhanicheskoi bezopasnosti pri razrabotke mestorozhdenii poleznykh iskopaemykh kompleksom glubokoi razrabotki plastov (KGRP) [Recom-mendations to ensure the geomechanical safety during the highwall mining (SMH)], Kemerovo, UF VNIMI, 2005, 29 p.

12. Tipovye tekhnologicheskie skhemy otrabotki ugol'nykh plastov s primeneniem KGRP (SMH), utverzhdennymi Kuznetskim upravleniem Rostekhnadzora RF [Typical technological schemes of coal seam mining with the use of SMH, approved by the Kuznetsk office of Rostekhnadzor of the Russian Federation], Kemerovo: NTTs-NII OGR, 2004, 27 p.

13.Grigoryan A. A. The theoretical basis of the technology parameters a deserted coal mining and industrial testing of the coal plant. Ugol'. 2014, no 9 (1062), pp. 26—29. [In Russ].

14. Grigoryan A. A. Application of the highwall mining formed in the marginal wall of the quarry in terms of the Kuznetsk coal basin. Gornyy informatsionno-analiticheskiy byulleten’. 2014, no 8, pp. 40—44. [In Russ].

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