volume 12, issue 3, P408-412 1975
DOI: 10.1139/t75-044
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Abstract: Conventional methods of piezometer response testing are unsuitable for analyzing observed data from three piezometers placed in fractured coal and siltstone units. However, these responses correspond closely to the results of pressure tests in fractured limestones (Pollard). Following an extended form of the Pollard analysis, the fracture porosity within fractured coal units is calculated to comprise approximately 3.7% of the total porosity. In the deeper siltstone unit, the fracture porosity makes up only 0.…

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