Conference Proceedings
COAL98 - First Australasian Coal Operators' Conference, Wollongong, NSW, February 1998
Conference Proceedings
COAL98 - First Australasian Coal Operators' Conference, Wollongong, NSW, February 1998
Prediction of Strata Caving Characteristics and its Impact on Longwall Operation
Recent advances in computer simulation together with field measurements of caving and microseismic activity about
longwall panels, has allowed a much better understanding of the caving process and the variability due to geology. The
joint research between SCT Operations and CSIRO Division of Exploration and Mining has initiated new methods of
computational modelling predicting various caving patterns and strata failure far ahead of the longwall face. This work
was validated by field measurements of caving and microseismic activity at the longwall face.
The rock fracture distribution and the caving characteristics of a range of strata sections have been simulated by computer
methods. Validation studies of the method were addressed together with case studies. The interaction of caving with
support convergence and face control is presented. The method allows the simulation of longwall support behaviour under
various geological conditions. The system also allows a prediction of the monitoring data, which is best suited to give an
early warning of weighting events or signal various key caving characteristics.
longwall panels, has allowed a much better understanding of the caving process and the variability due to geology. The
joint research between SCT Operations and CSIRO Division of Exploration and Mining has initiated new methods of
computational modelling predicting various caving patterns and strata failure far ahead of the longwall face. This work
was validated by field measurements of caving and microseismic activity at the longwall face.
The rock fracture distribution and the caving characteristics of a range of strata sections have been simulated by computer
methods. Validation studies of the method were addressed together with case studies. The interaction of caving with
support convergence and face control is presented. The method allows the simulation of longwall support behaviour under
various geological conditions. The system also allows a prediction of the monitoring data, which is best suited to give an
early warning of weighting events or signal various key caving characteristics.
Contributor(s):
W J Gale, J A Nemick
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- Published: 1998
- PDF Size: 2.538 Mb.
- Unique ID: P199806053