裂隙岩体水力学特性研究

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Abstract Based on flow law of fracture water，the permeability and high pressure permeability are studied by Lugeon test，and focusing on the stress relativity of hydraulic property. The results indicate that：(1) The permeability of fractured rock mass is correlative with supporting environment of stress，and very sensitive to stress. (2) Under different stress environments，hydraulic fracturing pressures and fracture fillings，the differences of high pressure permeability properties are large. In addition，based on predecessors′ studies and numerical analysis methods，the hydraulic properties of fractured rock mass such as discontinuity，heterogeneity，anisotropy，preferential flow and size effect are discussed synthetically. Moreover，the hydraulic property and its possible causes are summarized.

Key words： rock mechanics fractured rock mass stress relativity high pressure permeability hydraulic property

Received: 27 August 2011

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