TECHNOLOGY AND EQUIPMENT FOR BOOSTING COAL EXTRACTION BY ROOM-AND-PILLAR MINING

In terms of a coal mine of Mezhegei Coal Company in the Republic of Tyva, Russia, the technology of room-and-pillar mining with coal extraction from rooms and then from pillars is described. It is shown that this mining system involves high mineral loss (up to 30–40%). The potential of improving efficiency of coal extraction from pillars using import equipment—mobile roof support—is revealed. The structure and operation of MRS in foreign mines is described. This technology allows extracting coal from pillars with people and equipment positioned in a safe zone, with controllable roof caving, which prevents large-scale deformation of ground surface. The international practice proves extractability of up to 85–90% of coal from rib pillars under protection of this support type. The purchase of import equipment by Russian mines involves high expenses connected with shipment and customs dues. This article proposes a simpler, safer and chipper MRS structure. In the new design, the system of hydraulic hoist of the roof canopy is replaced by the pneumatic hoist. The basic parameters of MRS are presented. The use of the pneumocylinder in the capacity of the expansion element simplifies the whole structure, reduces injury risk and saves purchase cost of MRS. The put forward engineering solution enables mines using room-and-pillar to extract coal at high efficiency and comparatively low operating cost.

For citation: Sementsov V. V., Ludzish V. S., Prokopenko S. A. Technology and equipment for boosting coal extraction by room-and-pillar mining . MIAB. Mining Inf. Anal. Bull. 2019;(10):65-78. [In Russ]. DOI: 10.25018/0236-1493-2019-10-0-65-78.

Keywords

Mine, seam, coal loss, room-and-pillar mining, pillar, extraction, structure, roof canopy, pneumocylinder.

Issue number: 10
Year: 2019
ISBN: 0236-1493
UDK: 622.271.3
DOI: 10.25018/0236-1493-2019-10-0-65-78
Authors: Sementsov V. V., Ludzish V. S., Prokopenko S. A.

About authors: V.V. Sementsov, Cand. Sci. (Eng.), Head of Laboratory, e-mail: v.sementsov@nc-vostnii.ru, V.S. Ludzish, Dr. Sci. (Eng.), Professor, Leading Researcher, S.A. Prokopenko, Dr. Sci. (Eng.), Professor; Leading Researcher, National Research Tomsk Polytechnic University, 634050, Tomsk, Russia, e-mail: sibgp@mail.ru, Scientific Centre «VostNII» for Industrial and Environmental Safety in Mining Industry JSC, Kemerovo, 650002, Russia, Corresponding author: S.A. Prokopenko, e-mail: sibgp@mail.ru.

REFERENCES:

1. Tekhnicheskoe perevooruzhenie shakhty ugol'noy na period stroitel'stva ugledobyvayushchego kompleksa OOO «UK «Mezhegeyugol'». 1 ochered'. Puskovoy kompleks. Dopolnenie No 2. Poyasnitel'naya zapiska [Technical re-equipment of the coal mine for the period of construction of the coal mining complex LLC «UK «Mezhegeyugol'». 1 turn. Starting complex. Supplement No. 2. Explanatory note], Novokuznetsk, ZAO «Promugleproekt», 2016, 162 p. [In Russ].

2. Bulgakov E. S., Vormsbekher S. A., D'yachuk V. N., Khazhiev V. A. Improvement of the system of operation and repair of mining equipment. Ugol'. 2016, no 2, pp. 83—85. [In Russ].

3. Prokopenko S. A., Kurzina I. A., Lesin Yu.V. Prospects for improvement of mining machines’ cutting picks. IOP Conference Series: Materials Science and Engineering. 2016. Vol. 124. No 1, Article number 012134. pp. 1—5. doi: 10.1088/1757-899X/124/1/012134.

4. Makarov A. M. Development of the system to ensure the efficiency of mining and transport equipment. Ugol'. 2016, no 1, pp. 38—40. [In Russ].

5. Baskakov V. P., Rozenbaum M. A., Kalinin S. I., Sementsov V. V., Dobrovol'skiy M. S. Working off of powerful coal seams dangerous on gas-dynamic phenomena by system of short faces. Ugol'. 2015, no 11, pp. 17—20. [In Russ].

6. Sementsov V. V., Dobrovol'skiy M. S., Nifanov E. V., Shabalin M. P. Application of the shortface system in mining coal seams prone to dynamic phenomena. Vestnik NTS VostNII. 2017, no 2, pp. 27—31. [In Russ].

7. Vartanov A. Z., Petrov I. V., Fedash A. V. Scientific and methodological basis for making design decisions on the combined development of formations with long and short faces at coal mining enterprises. Ugol'. 2015, no 10, pp. 30—34. [In Russ].

8. Ryl'nikova M. V., Vladimirov D. Ya., Pytalev I. A., Popova T. M. Robotic Geotechnology as a way to improve efficiency and greening of subsoil development. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2017, no 1, pp. 92—101. [In Russ].

9. Lushnikov V. N., Eremenko V. A., Sendi M. P., Kosyreva M. A. The choice of roof bolting for mines, tend to the mountain blows. Fiziko-tekhnicheskiye problemy razrabotki poleznykh iskopayemykh. 2017, no 3, pp. 86—96. [In Russ].

10. Pozolotin A. S., Grechishkin P. V., Opruk G. Yu., Zayatdinov D.f., Chugaynov S. S.Improving the design of anchor support elements. Ugol'. 2016, no 5, pp. 68—71. [In Russ].

11. Grechishkin P. V., Pozolotin A. S., Zayatdinov D. F., Sharov V. N. Estimation of efficiency of two-level anchor fastening of interfaces of mine workings of coal mines. Gornyy zhurnal. 2015, no 8, pp. 48—52. [In Russ].

12. Cherepov A. A., Shiryaev S. N., Kulak V. Yu. Study of the distribution of stresses and strains of geomassiv in the chamber-column system of mining a powerful shallow coal seam. Gornyy informatsionno-analiticheskiy byulleten’. 2017, no 9, pp. 170—178. [In Russ].

13. Kornilkov S. V., Yakovlev V. L. On the methodological approach to research in the field of subsoil development on the basis of system, complexity, interdisciplinary and innovative orientation. Gornyy zhurnal. 2015, no 1, pp. 4—9. [In Russ].

14. Prokopenko S. A., Ludzish V. S., Kurzina I. A., Sushko A. V. An alternative source of energy in the operation of mechanized treatment plants in coal mines. Gornyy zhurnal. 2015, no 11, pp. 75—77. doi: 10.17580/gzh.2015.11.15. [In Russ].

15. Prokopenko S. A. Coal energy — advanced technologies. Ugol'. 2005, no 7, pp. 55—57. [In Russ].

16. Howe L. A Decade of Mobile Roof Support Application in the United States. Paper in Proceedings, 17th International Conference on Ground Control in Mining, ed. by S.S. Peng (Morgantown, WV, Aug. 4—6, 1998). Dept. of Mining Engineering, WV Univ., pp. 187—201.

17. Lind G. H. Key success elements of coal pillar extraction in New South Wales. Journal of the South African Institute of Mining and Metallurgy. 2002. рр. 199—205.

18. K. McTyer, T. Sutherland. The Duncan Method of Partial Pillar Extraction at Tasman Mine. 11th Underground Coal Operators' Conference, University of Wollongong & the Australasian Institute of Mining and Metallurgy, 2011, рр. 8—15.

19. Howe L. Two Decades of Mobile Roof Support Applications. http://www.jhfletcher.com/ articles/TwoDecadesOfMobileRoofSupports.pdf (accessed 17.11.2017). 20. Maleki H., Owens J., Endicott M. Field evaluation of mobile roof support technologies (pp. 67—77). Paper presented at the 20th international conference on ground control in mining, 2001, Morgantown, W.V. West Virginia University// https://www.cdc.gov/niosh/mining/UserFiles/works/pdfs/feomr.pdf (accessed 03.12.2017).

21. Stepanovich G. Ya. Shakhtnye pnevmaticheskie krepi [Coal mine pneumatic roof supports], Kiev, Tekhnika, 1981, 158 p.

22. Rozental' M. B. Opyt sozdaniya obolochek pnevmaticheskikh shakhtnykh krepey [Experience in creating pneumatic shaft supports shells], Moscow, Ekspress-inform, TSNIEIugol', 1990, 32 p.

23. Rakhutin V. S. Pnevmaticheskie konstruktsii v gornom dele [Pneumatic structures in mining], Kiev, Donetsk, Vishcha shkola, Golovnoe izd-vo, 1983, 152 p.

24. Sitnikov G. A., Shakhurdin S. A., Buynyy N. S. Patent RU 2119584, MKP E21D 23/04, no 96118587/03. 27.09.1998.

25. Kostyuk S. G., Sitnikov G. A., Bedarev N. T. Modeling of mining processes to justify the parameters of the development of a deserted coal excavation using pneumatic support. Rozrobka rodovishch. 2013, no 2013, pp. 153—158. http://nbuv.gov.ua/UJRN/rr_2013_2013_23 (accessed 12.12.2017).

26. Sitnikov G. A. Razrabotka tekhnicheskikh trebovaniy k sozdaniyu sredstv i sposobov bezopasnogo upravleniya krovley pri otrabotke ugol'nykh plastov v slozhnykh gorno-geologicheskikh usloviyakh [Development of technical requirements for the creation of tools and methods for safe management of the roof during mining of coal seams in difficult geological conditions], Candidate’s thesis, Kemerovo, 2002, 18 p.

27. Shirokov A. P., Pislyakov B. G. Raschet i vybor krepi sopryazheniy gornykh vyrabotok [The calculation and selection of supports mates of mine workings], Moscow, Nedra, 1978, 304 p.

28. SHirokov A. P., Lider V. A., Pislyakov B. G. Raschet ankernoy krepi dlya razlichnykh usloviy primeneniya [Calculation of anchorage for different application conditions], Moscow, Nedra, 1976, 208 p.

29. Federal'nye normy i pravila v oblasti promyshlennoy bezopasnosti «Instruktsiya po raschetu i primeneniyu ankernoy krepi na ugol'nykh shakhtakh». (Zaregistrirovano v Minyuste Rossii 19.02.2014g, № 31354). Seriya 05, Vyp. 42 [Federal rules and regulations in the field of industrial safety «instructions for the calculation and use of anchorage in coal mines». (Registered in the Ministry of Justice of Russia 19.02.2014 No 31354). Series 05, Issue 42], Moscow, ZAO «NTTS PB», 2015, 186 p. [In Russ].

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