Research on large section and broken coal roadway in Zhaozhuang Coal Mine

DOI

10.2991/ifeesm-15.2015.189How to use a DOI?

Keywords

Large section broken coal roadway; large deformation; FLAC3D numerical simulation software; optimization support

Abstract

The Third mining area 33073 roadway of Zhaozhuang Coal Mine is a large section and broken coal roadway, after tunnel excavation, the emergence of large deformation surrounding rock phenomenon. By using simulation software roadway FLAC3D original support scheme simulation analysis, we found the original support scheme to control deformation of the roof and floor have a good effect, but the effect is poor with ribs of the roadway, then put forward three kinds of optimization support program, and its roadway displacement cloud for analysis. The results show that the Option 1 and Option 2 cannot support effectively to put roadway into good control. Support Schemes 3 through the tunnel roof support mode from full length anchor support to anchor and anchor combined support, to help reduce inter-row spacing of Bolt, change to help the Department of the top corner angle and anchor help section anchor arrangement allows the deformation of surrounding rock have been a more effective control, not only reduces the cost of support, but also reduces the time needed to support and improve the efficiency of support.

Copyright

© 2015, 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  - Hanjun Wang
PY  - 2015/09
DA  - 2015/09
TI  - Research on large section and broken coal roadway in Zhaozhuang Coal Mine
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 1025
EP  - 1028
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.189
DO  - 10.2991/ifeesm-15.2015.189
ID  - Wang2015/09
ER  -