Study on the roof-pillar rheological collapse of goaf based on H-K model

DOI

10.2991/icsma-16.2016.32How to use a DOI?

Keywords

goaf collapse; rheological of Pillars; failure in roof; three elements H-K model; monitoring in roof.

Abstract

The existing time could be years or even decades for goafs formed in mining. The rheological property of pillars may cause tensile failure in roof, and finally induce goaf catastrophic accidents which put serious threats to people underground and buildings on ground. Previous studies on goaf safety involving time effect are not much, and have some defects. This paper take three elements H-K model as the constitutive model of rock, considers the time effect, and makes an analysis for the whole process of deforming and failure in roof caused by rheological deformation of pillars. Through a reasonably dividing to the whole process of failure in roof and analysis, the function relationship between roof breakage and time was obtained. Achievements of this paper are expected to provide a new idea for mining goaf safety evaluation.

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  - Haitao Ma
AU  - Hongguang Ji
AU  - Min Zhang
PY  - 2016/12
DA  - 2016/12
TI  - Study on the roof-pillar rheological collapse of goaf based on H-K model
BT  - Proceedings of the 2016 4th International Conference on Sensors, Mechatronics and Automation (ICSMA 2016)
PB  - Atlantis Press
SP  - 162
EP  - 171
SN  - 1951-6851
UR  - https://doi.org/10.2991/icsma-16.2016.32
DO  - 10.2991/icsma-16.2016.32
ID  - Ma2016/12
ER  -