Study on influence of excavation sequence on the stability of coal pillar under final highwall with auger mining

ZENG Qianbang; CHENG Guoming; LIU Huanyu

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Volume 27 Issue 7

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Chinese Journal of Geotechnical Engineering > 2005 > 27(7): 768-771.

ZENG Qianbang, CHENG Guoming, LIU Huanyu. Study on influence of excavation sequence on the stability of coal pillar under final highwall with auger mining[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(7): 768-771.

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Study on influence of excavation sequence on the stability of coal pillar under final highwall with auger mining

1. Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China 2. Chinese Institute of Geological Environment Monitoring Beijing 100083 China 3. Hohai University Nanjing 210098 China

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Published Date: July 14, 2005

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Abstract

Abstract

The fracturing process induced by different excavation sequence under final highwall with auger mining was numerically simulated. The simulation results reproduced the effect of different excavation sequence on the fracture of coal pillar and indicated that different excavation sequence in different levels exerts great effect on the stability of coal pillars, but in the same level the effect of excavation sequence is not obvious. The study results provided theoretical basis for optimum design and excavation technology of coal pillar.
- auger mining,
- excavation sequence,
- coal pillar,
- stability,
- numerical simulation