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Rock Mechanics and Rock Engineering

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13.10.2015 | Original Paper

Determination of Abutment Pressure in Coal Mines with Extremely Thick Alluvium Stratum: A Typical Kind of Rockburst Mines in China

verfasst von: Sitao Zhu, Yu Feng, Fuxing Jiang

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 5/2016

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Abstract

This paper investigates the abutment pressure distribution in coal mines with extremely thick alluvium stratum (ETAS), which is a typical kind of mines encountering frequent intense rockbursts in China. This occurs due to poor understanding to abutment pressure distribution pattern and the consequent inappropriate mine design. In this study, a theoretical computational model of abutment pressure for ETAS longwall panels is proposed based on the analysis of load transfer mechanisms of key stratum (KS) and ETAS. The model was applied to determine the abutment pressure distribution of LW2302S in Xinjulong Coal Mine; the results of stress and microseismic monitoring verified the rationality of this model. The calculated abutment pressure of LW2302S was also used in the terminal mining line design of LW2301N for rockburst prevention, successfully protecting the main roadway from the adverse influence of the abutment pressure.

Vorheriger Artikel Analysis of Mining-induced Valley Closure Movements

Nächster Artikel Mechanism of Rock Burst Occurrence in Specially Thick Coal Seam with Rock Parting

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Titel: Determination of Abutment Pressure in Coal Mines with Extremely Thick Alluvium Stratum: A Typical Kind of Rockburst Mines in China
verfasst von: Sitao Zhu
Yu Feng
Fuxing Jiang
Publikationsdatum: 13.10.2015
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 5/2016
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-015-0868-x

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