NDLI: Numerical Simulation of Squeezing Failure in a Coal Mine Roadway due to Mining-Induced Stresses

Content Provider	Springer Nature Link
Author	Gao, Fuqiang Stead, Doug Kang, Hongpu
Copyright Year	2014
Abstract	Squeezing failure is a common failure mechanism experienced in underground coal mine roadways due mainly to mining-induced stresses, which are much higher than the strength of rock mass surrounding an entry. In this study, numerical simulation was carried out to investigate the mechanisms of roadway squeezing using a novel UDEC Trigon approach. A numerical roadway model was created based on a case study at the Zhangcun coal mine in China. Coal extraction using the longwall mining method was simulated in the model with calculation of the mining-induced stresses. The process of roadway squeezing under severe mining-induced stresses was realistically captured in the model. Deformation phenomena observed in field, including roof sag, wall convexity and failed rock bolts are realistically produced in the UDEC Trigon model.
Starting Page	1635
Ending Page	1645
Page Count	11
File Format	PDF
ISSN	07232632
Journal	Rock Mechanics and Rock Engineering
Volume Number	48
Issue Number	4
e-ISSN	1434453X
Language	English
Publisher	Springer Vienna
Publisher Date	2014-09-27
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Squeezing Coal mine Roadway Discrete element method Mining-induced stress Geophysics/Geodesy Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology Civil and Structural Engineering

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Numerical Simulation of Squeezing Failure in a Coal Mine Roadway due to Mining-Induced Stresses