Research on Secondary Support Time of Soft Rock Roadway

DOI

10.2991/coal-16.2016.2How to use a DOI?

Keywords

soft rock roadway; secondary support time; rheological model Introduction

Abstract

In order to determine accurately secondary support time, the adjustment process of surrounding rock stress and strength in the course of supporting is analyzed based on the support principle of soft rock roadway. Based on the rheological model of soft rock roadway and the corresponding relationship between the mechanics behaviors of elastic zone, plastic zone and fractured zone and rock complete stress-strain process, the theoretical formula of secondary support time is proposed. Then the influential factors and rules of secondary support time are analyzed. To validate the study, the secondary support time theory is applied to engineering practice. Results show the roadway maintains a good stability according to the proposed secondary support time.

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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TY  - CONF
AU  - Wu Duohua
AU  - Qiao Weiguo
AU  - Song Weijie
AU  - Vladimir Pershin
PY  - 2016/10
DA  - 2016/10
TI  - Research on Secondary Support Time of Soft Rock Roadway
BT  - Proceedings of the 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"
PB  - Atlantis Press
SP  - 5
EP  - 10
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-16.2016.2
DO  - 10.2991/coal-16.2016.2
ID  - Duohua2016/10
ER  -