Study on the abutment pressure distribution in top coal caving

The investigation on the deformation and failure of top coal and its roof strata is the key topic of fundamental research of the fully mechanized top coal caving method. In this paper, the mechanical model of continuous damage and failure of top coal is established based on damage mechanics and stat...

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Bibliographic Details
Published inArabian journal of geosciences Vol. 13; no. 4
Main Authors Yu, Bin, Zhang, Lingfan
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2020
Springer Nature B.V
Subjects
Coal
Damage
Deformation
Distribution
Earth and Environmental Science
Earth science
Earth Sciences
Mechanics
Original Paper
Pressure
Pressure distribution
Stress concentration
Top coal caving method
The three dimensional constitutive equation
The distribution of the abutment pressure
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Summary:The investigation on the deformation and failure of top coal and its roof strata is the key topic of fundamental research of the fully mechanized top coal caving method. In this paper, the mechanical model of continuous damage and failure of top coal is established based on damage mechanics and statistical strength theory. Owing to the declining of horizontal pressure in top coal during caving, the distribution of the abutment pressure is also studied. The theoretical results are in agreement with the experimental data.
ISSN:1866-7511
1866-7538
DOI:10.1007/s12517-020-5157-7