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Study of shield support characteristics and their influence on the roof behaviour in coal longwalls

Authors
Journal
Mining Science and Technology
0167-9031
Publisher
Elsevier
Publication Date
Volume
13
Issue
3
Identifiers
DOI: 10.1016/0167-9031(91)90571-s
Disciplines
  • Design
  • Mathematics

Abstract

Abstract To ensure good roof control in coal longwalls, the correct handling of a shield support is of equal importance with the correct design of the support. This paper summarizes an underground survey of the performance of shield supports. The distributions of geometrical parameters as well as of parameters of support resistance were characterized by a wide scatter in the data. The effect of these parameters on the frequency of falls of ground showed a significant correlation.

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