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Impact Of Horizontal Load On Shield Supports
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Citation (Style = APA)
Barczak, Thomas M. (1984). Impact Of Horizontal Load On Shield Supports. Proceeding of the Fourth Conference on Ground Control in Mining (ICGCM)
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Barczak, Thomas M. (1984). Impact Of Horizontal Load On Shield Supports. Proceeding of the Fourth Conference on Ground Control in Mining (ICGCM)
Citation Downloads
Reference Manager (RIS)
SpreadSheed (CSV)
Organization: International Conference on Ground Control in Mining
Pages: 8
Publication Date:
Jan 1, 1984
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Abstract
Abstract
| A theoretical evaluation of the impact of horizontal load on shield support capacity is made from a static rigid body analysis of the shield structure. Parameters affecting horizontal support resistance are investigated for a typical too-leg shield design. Horizontal forces acting on a roof support element are found to be both roof-generated and shield-generated. The impact of shield-generated horizontal forces on roof strata is also discussed from a theoretical viewpoint in relation to desired ground control. A technique is described whereby horizontal loading of shield supports can be measured underground. Horizontal load measurements from two different longwall faces were found to be significant, ranging from 20-35 pct of measured vertical load. |
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