Transient pulse test and morphological analysis of single rock fractures

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• 作者：Yanlin Zhao^a ; ^b ; Lianyang Zhang^c ; ^{lyzhang@email.arizona.edu} ; Weijun Wang^a ; Jingzhou Tang^a ; Hang Lin^d ; Wen Wan^a
• 关键词：Single fracture ; Permeability ; Transient pulse test ; Surface morphology ; Hydro-mechanical coupling
• 刊名：International Journal of Rock Mechanics and Mining Sciences
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：91
• 期：Complete
• 页码：139-154
• 全文大小：2911 K
• 卷排序：91

文摘

A new method based on polynomial fitting is introduced to analyze the pulse decay data. The permeability first remarkably decreases with higher confining pressure and then at a much slower speed. The effect of fracture roughness on the permeability is related to the confining pressure. The hydro-mechanical coupling reduces the roughness of rock fractures.