DETERMINATION OF OPTIMAL BLOCK LENGTH ALONG THE STRIKE TO PROVIDE SAFETY AND EFFICIENCY WHEN EXTRACTING MEDIUM-THICK IN-CLINED COAL SEAMS USING ROOM-AND-PILLAR METHOD IN QUANG NINH COAL BASIN


https://doi.org/10.17073/2500-0632-2018-2-3-7

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Abstract

An analysis of appropriateness of room-and-pillar method for extracting medium-thick inclined coal seams in Quang Ninh Coal Basin taking into account existing mining and geological conditions was carried out. Corresponding foreign experience of applying room-and-pillar method was considered in relation to the mines of Vietnam. Process flow sheet of first mining and extraction of medium-thick inclined coal seams by room-and-pillar method in complicated mining and geological conditions was developed, and optimal block length along the strike to provide the production safety and efficiency was determined.

About the Authors

Duc Thang Pham
National University of Science and Technology "MISiS" Quang Ninh University of Industry
Russian Federation

4, Leninsky Prospekt, Moscow, Russia, 119991

Yên Thọ, tx. Đông Triều, Quảng Ninh, Vietnam



Victor G. Vitcalov
National University of Science and Technology "MISiS"
Russian Federation

4, Leninsky Prospekt, Moscow, Russia, 119991

Cand. Sci. (Tech.)



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Supplementary files

For citation: Pham D., Vitcalov V.G. DETERMINATION OF OPTIMAL BLOCK LENGTH ALONG THE STRIKE TO PROVIDE SAFETY AND EFFICIENCY WHEN EXTRACTING MEDIUM-THICK IN-CLINED COAL SEAMS USING ROOM-AND-PILLAR METHOD IN QUANG NINH COAL BASIN. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2018;(2):3-8. https://doi.org/10.17073/2500-0632-2018-2-3-7

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