Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)

Extension of Water Flowing Fractured Zone during Coal Seams Mining in No.1 Mine of Tashendian Area

Authors
Qinghai Li, Tongbin Zhao, Zhen Li, Jingkai Li
Corresponding Author
Qinghai Li
Available Online October 2018.
DOI
https://doi.org/10.2991/coal-18.2018.21How to use a DOI?
Keywords
coal seams, water flowing fractured zone, waterproof coal (rock) pillar, theoretical analysis, numerical simulation, physical simulation
Abstract

In coal seams mining in No. 1 mine of Tashendian area, three methods of theoretical analysis, UDEC numerical simulation, and physical simulation test were used in this research to analyze the extension height of water flowing fractured zone and the height of waterproof coal (rock) pillar. By calculation, it was obtained that, after each coal seam mined out, the height of water flowing fractured zone is about 33.7 m above 8-1 # coal seam, and the size of waterproof coal (rock) pillar greater than 44.06 m was reasonable; after upper and lower groups coal seam mined out, the height of water flowing fractured zone is about 81 m above 8-1# coal seam, and the size of waterproof coal (rock) pillar greater than 91.36 m was reasonable; after all coal seams mined out simultaneously, the height of water flowing fractured zone is about 95.1 m above 8-1 # coal seam, and the size of waterproof coal (rock) pillar greater than 105.46 m was reasonable. By numerical simulation, it was obtained that, after upper and lower groups coal seam mined out, the height of water flowing fractured zone is about 46.0 m above 8-1 # coal seam, and the size of waterproof coal (rock) pillar greater than 56.36 m was reasonable; after all coal seams mined out simultaneously, the height of water flowing fractured zone is about 76.0 m above 8-1# coal seam, and the size of waterproof coal (rock) pillar greater than 86.36 m was reasonable; By physical simulation, it was obtained that, after upper and lower groups coal seam mined out, the height of water flowing fractured zone is about 40.0 m above 8-1 # coal seam. And the waterproof coal (rock) pillar was about 70.0 m between and the aquifer. In situ production, each coal seam was mined out orderly.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
Series
Advances in Engineering Research
Publication Date
October 2018
ISBN
978-94-6252-570-2
ISSN
2352-5401
DOI
https://doi.org/10.2991/coal-18.2018.21How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Qinghai Li
AU  - Tongbin Zhao
AU  - Zhen Li
AU  - Jingkai Li
PY  - 2018/10
DA  - 2018/10
TI  - Extension of Water Flowing Fractured Zone during Coal Seams Mining in No.1 Mine of Tashendian Area
BT  - Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
PB  - Atlantis Press
SP  - 122
EP  - 130
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-18.2018.21
DO  - https://doi.org/10.2991/coal-18.2018.21
ID  - Li2018/10
ER  -