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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of water jet geometric parameters on rock fracturing
Abstract Fluid-driven rock fracturing has been attempted in the fields of mining and civil engineering. This type of rock fracturing is initiated by applying high-pressure water to target rock. In this study, the fracturing characteristics of hard granite specimens were explored through experimental tests using a high-pressure water jet system. Various tests were performed to evaluate the effects of several geometric parameters: standoff distance, indentation depth, and free surface condition. The fracture depth, radius, volume, and angle were measured, and then analyzed to investigate the fracturing characteristics. In addition, we prepared a theoretical estimate of maximum shear stress via shear stress analysis using a crack-tip stress field model. In these experimental and theoretical studies, efficient rock fracturing was demonstrated with a combination of short standoff distance, deep indentation, and nearby free surfaces. Meanwhile, the fracture angle for infinite free surface boundary specimens was identified as a unique value regardless of the standoff distance and indentation depth.
Effect of water jet geometric parameters on rock fracturing
Abstract Fluid-driven rock fracturing has been attempted in the fields of mining and civil engineering. This type of rock fracturing is initiated by applying high-pressure water to target rock. In this study, the fracturing characteristics of hard granite specimens were explored through experimental tests using a high-pressure water jet system. Various tests were performed to evaluate the effects of several geometric parameters: standoff distance, indentation depth, and free surface condition. The fracture depth, radius, volume, and angle were measured, and then analyzed to investigate the fracturing characteristics. In addition, we prepared a theoretical estimate of maximum shear stress via shear stress analysis using a crack-tip stress field model. In these experimental and theoretical studies, efficient rock fracturing was demonstrated with a combination of short standoff distance, deep indentation, and nearby free surfaces. Meanwhile, the fracture angle for infinite free surface boundary specimens was identified as a unique value regardless of the standoff distance and indentation depth.
Effect of water jet geometric parameters on rock fracturing
Oh, Tae-Min (Autor:in) / Prasidhi, Awlia K. (Autor:in) / Cho, Gye-Chun (Autor:in) / Shin, Jong-Ho (Autor:in)
KSCE Journal of Civil Engineering ; 18 ; 772-779
22.03.2014
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Effect of water jet geometric parameters on rock fracturing
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