Evolution Characteristics of Rock Burst Danger Mining in Syncline Environment

DOI

10.2991/coal-18.2018.4How to use a DOI?

Keywords

syncline structure, deflection, energy distribution, rock burst danger, shear instability

Abstract

Based on the theory of Winkler beam on elastic foundation, mechanical model of syncline genesis was established and deflections, bending moment and strain energy were deduced. Meanwhile, stress and energy conditions mining in syncline structure were analyzed from the point of formation mechanism of syncline structure using ground pressure theory and UDEC numerical simulation method. The results show that the formation of syncline is influenced by multiple factors. The larger the buried depth of coal seam, bulk density of overlying strata, characteristic coefficient and tectonic stress, the smaller foundation coefficient, and the easier syncline structure can be formed. Meanwhile, the closer the distance of working face to synclinal axis, the larger the ratio between shear and vertical stress and the surplus energy at the peak of abutment pressure in front of coal wall, and the greater the occurrence possibility of rock burst.

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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TY  - CONF
AU  - Shitan Gu
AU  - Bangyou Jiang
AU  - Ruifeng Huang
AU  - Zhimin Xiao
PY  - 2018/10
DA  - 2018/10
TI  - Evolution Characteristics of Rock Burst Danger Mining in Syncline Environment
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  - 17
EP  - 24
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-18.2018.4
DO  - 10.2991/coal-18.2018.4
ID  - Gu2018/10
ER  -