Proceedings of the 2016 4th International Conference on Management Science, Education Technology, Arts, Social Science and Economics (msetasse-16)

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Research on Stability of Coal Pillars in Wongawilli Mining Area of Ganhe Colliery

Authors
Liang Tian, Minzu Li, Shaopeng Jiao, Dongsheng Yang, Xianghui Kang
Corresponding Author
Liang Tian
Available Online November 2016.
DOI
10.2991/msetasse-16.2016.113How to use a DOI?
Keywords
bound coal; Wongawilli mining method; coal pillars; numerical simulation
Abstract

In order to find a suitable technology for recovery of bound coal in China's Shanxi province, the Wongawilli mining method is applied in Ganhe colliery. Recovery rate depends on reasonable deign of rooms and pillars. Geological conditions of pilot area is complex, such as great burial depth, poor integrality and latent underground water. In consideration of that, the study was carried out in 2013. Site sampling, SEM (scanning electron microscope), XRD (X-Ray Diffraction) and some other mechanical equipment were used to test physical and mechanical parameters of surrounding rocks. The RQD (rock quality designation) is lower than 30%, so the integrality of rocks is quite poor, the compressive strength is of high discrete. Then theory of simply supported beam and theory of clamped beam were used to acquire the reasonable span of roof rock. Finally, numerical models were founded to analyse deformation, plastic zone and stress evolution by FLAC3D. Three different size of coal pillar were compared. We come to a conclusion that the suitable width of little pillar is 1.5 m in this mining area, it can guarantee stability of stope, meanwhile recovery rate is the highest.

Copyright
© 2016, 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 2016 4th International Conference on Management Science, Education Technology, Arts, Social Science and Economics (msetasse-16)
Series
Advances in Social Science, Education and Humanities Research
Publication Date
November 2016
ISBN
10.2991/msetasse-16.2016.113
ISSN
2352-5398
DOI
10.2991/msetasse-16.2016.113How to use a DOI?
Copyright
© 2016, 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

risenwbib
TY  - CONF
AU  - Liang Tian
AU  - Minzu Li
AU  - Shaopeng Jiao
AU  - Dongsheng Yang
AU  - Xianghui Kang
PY  - 2016/11
DA  - 2016/11
TI  - Research on Stability of Coal Pillars in Wongawilli Mining Area of Ganhe Colliery
BT  - Proceedings of the 2016 4th International Conference on Management Science, Education Technology, Arts, Social Science and Economics (msetasse-16)
PB  - Atlantis Press
SP  - 505
EP  - 510
SN  - 2352-5398
UR  - https://doi.org/10.2991/msetasse-16.2016.113
DO  - 10.2991/msetasse-16.2016.113
ID  - Tian2016/11
ER  -