gscienceMining Science and Technology (Russia)Горные науки и технологии2500-0632The National University of Science and Technology MISiIS (NUST MISIS)10.17073/2500-0632-2018-2-3-7gscience-105Research ArticleMINERAL RESOURCES EXPLOITATIONРАЗРАБОТКА МЕСТОРОЖДЕНИЙ ПОЛЕЗНЫХ ИСКОПАЕМЫХDetermination 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 BasinDetermination 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 BasinPhamDuc ThangPhamDuc Thang

Moscow

Quang Ninh, Vietnam

4, Leninsky Prospekt, Moscow, Russia, 119991

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

phamducthangmct@gmail.comVitcalovV. G.VitcalovVictor G.

Moscow

4, Leninsky Prospekt, Moscow, Russia, 119991

Cand. Sci. (Tech.)

vitcalov@yandex.ruNational University of Science and Technology "MISiS" Quang Ninh University of IndustryВьетнамNational University of Science and Technology "MISiS" Quang Ninh University of IndustryViet NamNational University of Science and Technology "MISiS"РоссияNational University of Science and Technology "MISiS"Russian Federation2018090820180238Copyright © Pham D., Vitcalov V.G., 20182018Pham D., Vitcalov V.G.Pham D., Vitcalov V.G.This work is licensed under a Creative Commons Attribution 4.0 License.https://mst.misis.ru/jour/article/view/105

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.

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.

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The authors declare that there are no conflicts of interest present.