Numerical Survey on the Destabilization Mechanism of Weakly Cemented Soft Rock Roadway Considering Interlayer Effect

Numerical Survey on the Destabilization Mechanism of Weakly Cemented Soft Rock Roadway... One of the major challenges facing coal mines in western China is occurrence of large deformation and hanging roof falls when roadway contains weak interlayer. To determine the effect of the thickness, stiffness and strength of the weak mudstone interlayer on the deformation of the weakly cemented soft rock roadway, two numerical models were built aiming to clarify the mechanism of roof fall and large deformation in Hongqingliang coal mine, China. The results show that the thickness and stiffness of the weak mudstone interlayer have a great influence on the subsidence of the roof. With the increase of the thickness of the weak mudstone interlayer or the decrease of stiffness, the subsidence of the roof increases obviously, but the strength of the weak mudstone interlayer has little effect on the deformation of the roof. The results can be used as a reference for the study of deformation and destabilization of surrounding rock in weakly cemented soft rock roadway with weak mudstone interlayer. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geotechnical and Geological Engineering Springer Journals

Numerical Survey on the Destabilization Mechanism of Weakly Cemented Soft Rock Roadway Considering Interlayer Effect

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Hydrogeology; Terrestrial Pollution; Waste Management/Waste Technology; Civil Engineering
ISSN
0960-3182
eISSN
1573-1529
D.O.I.
10.1007/s10706-018-0593-9
Publisher site
See Article on Publisher Site

Abstract

One of the major challenges facing coal mines in western China is occurrence of large deformation and hanging roof falls when roadway contains weak interlayer. To determine the effect of the thickness, stiffness and strength of the weak mudstone interlayer on the deformation of the weakly cemented soft rock roadway, two numerical models were built aiming to clarify the mechanism of roof fall and large deformation in Hongqingliang coal mine, China. The results show that the thickness and stiffness of the weak mudstone interlayer have a great influence on the subsidence of the roof. With the increase of the thickness of the weak mudstone interlayer or the decrease of stiffness, the subsidence of the roof increases obviously, but the strength of the weak mudstone interlayer has little effect on the deformation of the roof. The results can be used as a reference for the study of deformation and destabilization of surrounding rock in weakly cemented soft rock roadway with weak mudstone interlayer.

Journal

Geotechnical and Geological EngineeringSpringer Journals

Published: Jun 2, 2018

References

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