Inicio > Term: Holland-Gaddy formula
Holland-Gaddy formula
A coal pillar design formula that predicts the strength of coal pillars based on laboratory tests of coal cube strength combined with pillar height and width specifications. The Holland-Gaddy formula is generally considered to be overly conservative for large pillar width-to-height ratios (over 5).
- Parte del discurso: noun
- Industria/ámbito: Minería
- Categoría: Minería general; Mineral mining
- Government Agency: USBM
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Creador
- ed.young
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(Milwaukee, United States)