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DEVELOPMENT OF DEPOSITS
ArticleName Underground mining of multiple coal seams: Problems and solutions
DOI 10.17580/em.2016.02.03
ArticleAuthor Sidorenko A. A., Sishchuk J. M., Gerasimova I. G.
ArticleAuthorData

Saint-Petersburg Mining University, Saint Petersburg, Russian Federation:

Sidorenko A. A., Associate Professor, Candidate of Technical Sciences, sidorenkoaa@mail.ru
Sishchuk J. M., Associate Professor, Candidate of Philology, julia.sishchuk@spmi.ru
Gerasimova I. G., Associate Professor, Candidate of Pedagogical Sciences, irishkags@ya.ru

Abstract

The foreign and Russian practices of mining of closely spaced coal seams are reviewed. The outcomes of the research accomplished by the USA National Institute for Occupational Safety and Health are generalized. It is found which geological and geotechnical factors govern safety and efficiency of mining of closely spaced coal seams. It is shown that the majority of accidents are connected with the influence of high stress zones generated by coal pillars left between longwalls. Methods to ensure stability of longwalls, assembling and disassembling chambers in mining of closely spaced coal seams in USA are described. The emergency situations due to destruction of longwalls in the influence zones of high stresses generated by pillars left in the upper seams are analyzed. For validation of the layout of underground excavations, in terms of Kirov Mine and using the Guidelines on Rock Bolt Support Design and Application in Coal Mines in Russia, the values of roof subsidence are calculated and plotted for different layouts of excavations with rock bolt support. Numerical investigation of stress state of overmined rock mass is presented for the conditions of Kirov Mine. It is shown that the most hazardous situation takes place when it is required to ensure safety of longwalling in the lower lying seam under the joint influence of previously mined out longwall and pillar in the upper lying seam. It is concluded on possible arrangement of longwall in the zone of high stresses in Kirov Mine, and it is recommended to shift headings beyond the high stress zone influence. Also, recommendations are given on economically efficient and safe mining of closely spaced coal seams. The areas of the further research are specified.

keywords Underground mining, multiple seams, longwall, undermining, overmining, interaction, ground control, gob solid, pillar
References

1. Mark C, Tuchman R. J. Multiple-seam longwall mining in the united states: lessons for ground control. New Technology for Ground Control in Multiple-Seam Mining. Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2007 May. pp. 45–53.
2. Mark C., Chase F. E., Pappas D. M. Multiple-seam mining in the United States: design based on case histories. Proceedings on the New Technology for Groung Control in multiple seam mining. 2007. pp. 15–27.
3. Mark C. Multiple-seam mining in the Central Appalachian coalfields. Proceedings of the New Technology for Ground Control in Multiple-Seam Mining. IC 9495. National Institute for occupational Safety and Health. Washington, DC. 2007.
4. Piscor S. US Longwall Operators Ramp Up Production. Coal-Age. The Magazine for Coal Mining and Processing Professionals. 2015. pp. 30–38.
5. Suchowerska A. M. Geomechanics of singleseam and multiseam longwall coal mining. University of Newcastle, University of Newcastle, submitted PhD thesis for examination. 2014.
6. Chase F. E., P. Worley and C. Mark. Multiple seam mining interactions: Case histories from the Harris No.1 mine. Proceedings of the 24th International Conference on Ground Control in Mining, Morgantown, WV: West Virginia University, 2005 August. pp. 79–86.
7. Heasley K. A., Worley P., Zhang Y. Stress analysis and support design for longwall mine-through entries (a case study). Proceedings of the 22nd International Conference on Ground Control in Mining, West Virginia University, Morgantown, WV. 2003.
8. Kazanin O. I., Ermakov A. Yu., Vanyakin O. V., Sidorenko A. A. Obosnovanie parametrov podgotovki vyemochnykh uchastkov pri otrabotke svit plastov dlinnymi zaboyami (Substantiation of the parameters of extraction districts preparation during the mining of multyseam systems by long face). Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2014. No. 10 (special issue). 12 p.
9. Ermakov A. Yu., Vanyakin O. V. Issledovaniya vzaimnogo vliyaniya ochistnykh rabot pri odnovremennoy otrabotke vyemochnykh stolbov plastov Baykaimskiy i Breevskiy na shakhtakh OAO “SUEK-Kuzbass” (Investigations of the interference of actual mining during the simultaneous mining of extraction pillars of Baykaimsky and Breevsky seams on the mines of the JSC «SUEK-Kuzbass»). Energeticheskaya bezopasnost Rossii: novye podkhody k razvitiyu ugolnoy promyshlennosti: Sbornik trudov XVI mezhdunarodnoy nauchno-prakticheskoy konferentsii 7–10 oktyabrya 2014 (Russian energetic safety: new approaches to the development of coal industry: collection of proceedings of the XVI international scientific-practical conference (October 7–10, 2014). Kemerovo, 2014. pp. 109–111.
10. Kazanin O. I., Ermakov A. Yu., Vanyakin O.V. Otsenka vliyaniya zon povyshennogo gornogo davleniya na effektivnost otrabotki ugolnykh plastov na shakhte imeni kirova OAO “SUEK-Kuzbass” (Estimation of the higher stress concentration zones influence onto coal seams mining at mine «Kirova» JSC «SUEK-Kuzbass»). Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2014. No. 4. pp. 18–22.
11. Sidorenko A. A., Sidorenko S. A., Vanyakin O. V. Obespechenie ustoychivosti uchastkovykh vyrabotok v zonakh povyshennogo gornogo davleniya (Provision of stability of section excavations in the areas of increased rock pressure). Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2015. No. 60(1) (special issue). pp. 277–287.
12. Sidorenko A. A. Analiz metodicheskikh podkhodov k opredeleniyu parametrov zon vliyaniya pri razrabotke sblizhennykh ugolnykh plastov (Analysis of methodical approaches to the definition of parameters of areas of influence during the mining of superimposed coal seams). Gornyy informatsionno-analiticheskiy byulleten = Mining informational and analytical bulletin. 2015. No. 60(1) (special issue). pp. 253–264.
13. Ukazaniya po ratsionalnomu raspolozheniyu, okhrane i podderzhaniyu gornykh vyrabotok na ugolnykh shakhtakh (Guidance for rational placing, protection and support of mining excavations on coal mines). Moscow : Gornoe delo (et al), 2011. 216 p. (in Russian)
14. Avaialble at: http://www.consultant.ru/document/cons_doc_LAW_159591/ (in Russian)
15. Sui W., Hang Y., Ma L., Wu Z., Zhou Y., Long G., Wei L. Interactions of overburden failure zones due to multiple-seam mining using longwall caving. Bulletin of Engineering Geological Environment. 2015. No. 74. pp. 1019–1035.
16. Xu Z., Sui W. Statistical prediction of overburden failure due to coal mining under sea area. In: Huang Y et al (eds). New frontiers in engineering geology and the environment. Springer, Berlin, 2013. pp. 255–258.
17. Xu Y., Li S., Zhao X., Zhang Q., Wang H. Overburden failure laws in working face of short distance thick coal seams group. Journal of Mineral Safety Engineering. 2013. No. 30. pp. 506–511.

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