Analysis of global and local stress changes in a longwall gateroad
| Autor: | Ted Klemetti, Gabriel S. Esterhuizen, Daniel W.H. Su, Khaled M. Mohamed, D. F. Gearhart, Ihsan Berk Tulu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:TN1-997
0211 other engineering and technologies Gateroad design Energy Engineering and Power Technology 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Article Mining engineering Rock fragment Back analysis Geochemistry and Petrology Bed Coal lcsh:Mining engineering. Metallurgy 021101 geological & geomatics engineering 0105 earth and related environmental sciences Shearing (physics) business.industry Horizontal angle Flac3D Longwall mining Gob loading Geotechnical Engineering and Engineering Geology Hollow inclusion cells business Geology |
| Zdroj: | International Journal of Mining Science and Technology, Vol 28, Iss 1, Pp 127-135 (2018) International journal of mining science and technology |
| ISSN: | 2095-2686 |
| Popis: | A numerical-model-based approach was recently developed for estimating the changes in both the horizontal and vertical loading conditions induced by an approaching longwall face. In this approach, a systematic procedure is used to estimate the model’s inputs. Shearing along the bedding planes is modeled with ubiquitous joint elements and interface elements. Coal is modeled with a newly developed coal mass model. The response of the gob is calibrated with back analysis of subsidence data and the results of previously published laboratory tests on rock fragments. The model results were verified with the subsidence and stress data recently collected from a longwall mine in the eastern United States. Keywords: Longwall mining, Gateroad design, Flac3D, Horizontal angle, Gob loading, Hollow inclusion cells |
| Databáze: | OpenAIRE |
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