Analysis on the supporting technology of the gob-side entry retaining

DOI

10.2991/meic-15.2015.68How to use a DOI?

Keywords

the gob-side entry retaining; fracture location; combination support; superpower roof cutting; anchor bolt

Abstract

The research established a mechanical model which could reflect the basic features of rock stratum and made a profound investigation on the form and conditions of the fractures on main roofs. Based on mechanical analysis, the fracture location is difference when lane offshoot care is difference, cutting possibly the immediate roof even the main roof through superpower roof cutting, which can reduce the influence of roadway. The engineering detection and data analysis showed that a stable structure could be formed by the application of appropriate bolts (anchors) when the retained roadway is under the influences of the mining. In this manner, enough resisting forces will be provided to cut the roof. Then actual observation of fracture lines on the mined-out side demonstrates that the combination support is effective to form rational overhang length of the roof.

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  - Jian-jun Song
PY  - 2015/04
DA  - 2015/04
TI  - Analysis on the supporting technology of the gob-side entry retaining
BT  - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 287
EP  - 290
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-15.2015.68
DO  - 10.2991/meic-15.2015.68
ID  - Song2015/04
ER  -