裂隙岩体水力学特性研究

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摘要基于裂隙中的水流运动规律，通过现场压水试验，研究裂隙岩体的渗透特性及其高压渗透特性，重点分析其水力学特性的应力相关性。试验研究表明，裂隙岩体的渗透性与应力赋存环境密切相关，且对应力十分敏感；裂隙岩体的应力环境、水力劈裂压力及裂隙充填情况不同，其高压渗透特性有较大差异。同时，通过总结前人的研究成果并结合数值试验分析，从裂隙岩体渗流的非连续性、非均质性、各向异性、优势水力特性及尺寸效应等多方位描述裂隙岩体的水力学特性，对其水力学特性及其成因进行综合评述。

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关键词 ：岩石力学, 裂隙岩体, 应力相关性, 高压渗透, 水力学特性

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

收稿日期: 2011-08-27

引用本文:

倪绍虎1，2，何世海1，汪小刚2，吕慷1. 裂隙岩体水力学特性研究[J]. 岩石力学与工程学报, 2012, 31(3): 488-498.
NI Shaohu1，2，HE Shihai1，WANG Xiaogang2，LU Kang1. HYDRAULIC PROPERTIES OF FRACTURED ROCK MASS. , 2012, 31(3): 488-498.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I3/488

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