Research on D Section Steel Tube Filled with Concrete Used for High Stress Roadway Support in Deep Mines

DOI

10.2991/coal-18.2018.35How to use a DOI?

Keywords

D section steel tube filled with concrete, high stress roadway, deep mines, numerical simulation, field application

Abstract

In view of large deformation of return air roadway in No. 10 coal mine, this paper puts forward a new support of D section steel tube filled with concrete. In this paper, method of numerical simulation has been used to analyze the effect of this support. Based on compression simulation of circular ring, according to fractal geometry, the section of steel tube is designed as D section. By comparison, it is determined that the compressive strength of D section short steel tube filled with concrete is greater than that of circular section one and square section one. When lateral pressure coefficients are 1.0 and 1.5, the stress state in D section support is better than that of circular section support. By simulation, it is demonstrated that D section support is effective in roadway supporting. Through field application, it is verified that D section support is effective in high stress roadway supporting in deep mines.

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  - Qinghai Li
AU  - Limin Liu
AU  - Jing-kai Li
AU  - Zhen Li
PY  - 2018/10
DA  - 2018/10
TI  - Research on D Section Steel Tube Filled with Concrete Used for High Stress Roadway Support in Deep Mines
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  - 190
EP  - 196
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-18.2018.35
DO  - 10.2991/coal-18.2018.35
ID  - Li2018/10
ER  -