Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam

WANG Shuren; WANG Jin'an; DAI Yong

doi:10.13374/j.issn1001-053x.2005.01.002

Volume 27 Issue 1

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WANG Shuren, WANG Jin'an, DAI Yong. Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam[J]. Chinese Journal of Engineering, 2005, 27(1): 5-8. doi: 10.13374/j.issn1001-053x.2005.01.002

Citation:

WANG Shuren, WANG Jin'an, DAI Yong. Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam[J]. Chinese Journal of Engineering, 2005, 27(1): 5-8. doi: 10.13374/j.issn1001-053x.2005.01.002

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Distinct element analysis on coal movement law and failure mechanism during mechanized top-coal caving in steep thick seam

doi: 10.13374/j.issn1001-053x.2005.01.002

Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2004-03-01
Rev Recd Date: 2004-09-08

Available Online: 2021-08-17

Abstract

Abstract

By using UDEC2D technique, this paper analyzed coal and rock movement laws, the deformation and failure characteristics of coal and the major principal stress in the process of top-coal caving in steep thick seam. The failure mechanism of coal and the movement trend of rock on the top-coal caving working face were discussed. The results showed agreement with the field conditions, which is of important theoretical meaning to direct the practice in the similar engineering.
- steep thick seam,
- coal and rock movement,
- mechanized top-coal caving,
- mumerical simulation