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| HIGH PRESSURE PERMEABILITY PROPERTIES OF
FRACTURED ROCK MASSES |
| NI Shaohu1，2，HE Shihai1，WANG Xiaogang2，LU Kang1，BIAN Kang3 |
| (1. HydroChina Huadong Engineering Corporation，Hangzhou，Zhejiang 310014，China；2. China Institute of Water Resources and Hydropower Research，Beijing 100038，China；3. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China) |
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Abstract With rapid construction of hydropower stations and deep underground projects under high water pressure，there are more and more seepage failure risks in these projects. As a result，the in-situ high pressure permeability must be tested and the high pressure permeability properties and seepage stability of rock masses must be systematically and thoroughly studied. In this work，according to the revealed phenomenon in field and the water-rock interactions，the seepage failure mechanisms and failure modes of fractured rock masses under high water pressure are discussed. In addition，based on high pressure packer tests or high pressure permeability tests of several hydropower sataions under high water head，the permeability properties such as hydraulic fracturing，seepage deformation，erosion resistance and long-term seepage stability are studied. The results indicate that：(1) The permeability properties of fractured rock masses can be remarkably changed by high water pressure. (2) The changes of permeability properties are quite correlative with water pressure，supporting environment of stress and fracture fillings.
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Received: 12 April 2012
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| [1] 郭启良，丁立丰，张志国，等. 压力洞室围岩的高压透水率测试技术与应用研究[J]. 岩石力学与工程学报，2005，24(2)：230–235.(GUO Qiliang，DING Lifeng，ZHANG Zhiguo，et al. Study of high pressure permeability measurements and applications for pressure tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(2)：230–235.(in Chinese))
[2] 刘世明，胡宏磊，陈 鼎. 天荒坪抽水蓄能电站岔管区域高压渗透试验[J]. 岩土工程学报，1996，18(6)：31–38.(LIU Shiming，HU Honglei，CHEN Ding. High pressure permeability test at Tianhuangping pumped storage power station[J]. Chinese Journal of Geotechnical Engineering，1996，18(6)：31–38.(in Chinese))
[3] 丁立丰，郭启良，王成虎. 工程岩体裂隙渗透性试验方法研究及应用[J]. 岩土力学，2009，30(9)：2 599–2 604.(DING Lifeng，GUO Qiliang，WANG Chenghu. Research and application of testing methods for engineering rock mass fissure permeability[J]. Rock and Soil Mechanics，2009，30(9)：2 599–2 604. (in Chinese))
[4] 殷黎明，杨春和，罗超文，等. 高压压水试验在深钻孔中的应用[J]. 岩土力学，2005，26(10)：1 692–1 694.(YIN Liming，YANG Chunhe，LUO Chaowen，et al. Application of high water-pressure test to deep borehole[J]. Rock and Soil Mechanics，2005，26(10)：1 692–1 694. (in Chinese))
[5] 徐德敏，黄润秋，虞修竟. 高渗压小水力梯度岩石渗透性测试[J]. 岩土力学，2010，31(4)：1 103–1 107.(XU Demin，HUANG Runqiu，YU Xiujing. Rock permeability test under high pore water pressure and low hydraulic gradient[J]. Rock and Soil Mechanics，2010，31(4)：1 103–1 107.(in Chinese))
[6] CAPPA Y，GUGLIELMI Y，RUTQVIST J，et al. A new in-situ test for determination of rock-fracture hydromechanical properties：the “hydromechanical pulse injection test (HMPIT)”[C]// Proceedings of the GEOPROC 2006 International Symposium：2nd International Conference on Coupled Thermo-hydro-mechanical-chemical Processes in Geosystems and Engineering. Nanjing：[s. n.]，2006：428–433.
[7] CAPPA F，GUGLIELMI Y，RUTQVIST J，et al. Hydromechanical modeling of pulse tests that measure fluid pressure and fracture normal displacement at the Coaraze Laboratory site，France[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(7)：1 062–1 082.
[8] 中华人民共和国行业标准编写组. DL/T 5331—2005水电水利工程钻孔压水试验规程[S]. 北京：中国电力出版社，2005.(The Professional Standards Compilation Group of People?s Republic of China. DL/T 5331—2005 Code of water pressure test in borehole for hydraopower and water resources engineering[S]. Beijing：China Electric Power Press，2005.(in Chinese))
[9] 郭启良，丁立丰，王海忠，等. 钻孔高压压水测试在深埋与承压洞室工程中的应用研究[J]. 岩土力学，2003，24(增1)：99–102.(GUO Qiliang，DING Lifeng，WANG Haizhong，et al. Application research of high water pressure test for deep buried and pressuring chamber projects[J]. Rock and Soil Mechanics，2003，24(Supp.1)：99–102.(in Chinese))
[10] 张春生. 混凝土衬砌高压水道的设计准则与岩体高压渗透试验[J]. 岩石力学与工程学报，2009，28(7)：1 305–1 311.(ZHANG Chunsheng. Design criteria for concrete-lining high pressure hydropower tunnel and high pressure permeability test on rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(7)：1 305–1 311.(in Chinese))
[11] 蒋中明，冯树荣，傅 胜，等. 某水工隧洞裂隙岩体高水头作用下的渗透性试验研究[J]. 岩土力学，2010，31(3)：673–676.(JIANG Zhongming，FENG Shurong，FU Sheng，et al. Test study of osmotic behavior of fractured rock mass of water tunnel under high water pressure[J]. Rock and Soil Mechanics，2010，31(3)：673–676.(in Chinese))
[12] 李喜安，黄润秋，彭建兵，等. 关于物理潜蚀作用及其概念模型的讨论[J]. 工程地质学报，2010，18(6)：880–886.(LI Xi?an，HUANG Runqiu，PENG Jianbing，et al. Establishment of conceptual models of physical sub-ground erosion[J]. Journal of Engineering Geology，2010，18(6)：880–886.(in Chinese))
[13] 张有天. 岩石水力学与工程[M]. 北京：中国水利水电出版社，2005：31–32.(ZHANG Youtian. Rock hydraulics and engineering[M]. Beijing：China Water Power Press，2005：31–32.(in Chinese))
[14] 蒋中明，傅 胜，李尚高，等. 高压引水隧洞陡倾角断层岩体高压压水试验研究[J]. 岩石力学与工程学报，2007，26(11)：2 318–2 323. (JIANG Zhongming，FU Sheng，LI Shanggao，et al. High pressure permeability test on hydraulic tunnel with steep obliquity faults under high pressure[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(11)：2 318–2 323. (in Chinese))
[15] 唐红侠，周志芳，王文远. 水劈裂过程中岩体渗透性规律及机制分析[J]. 岩土力学，2004，25(8)：1 320–1 322.(TANG Hongxia，ZHOU Zhifang，WANG Wenyuan. Permeability of rock and mechanism analysis during hydraulic fracturing[J]. Rock and Soil Mechanics，2004，25(8)：1 320–1 322.(in Chinese))
[16] 倪绍虎，何世海，汪小刚，等. 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 Shaohu，HE Shihai，WANG Xiaogang. Hydraulic properties of fractured rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：488–498.(in Chinese))
[17] 熊义泳，孙忠明，姚文武. 清江水布垭电站现场帷幕灌浆试验与分析[J]. 岩石力学与工程学报，2004，23(9)：1 558–1 563.(XIONG Yiyong，SUN Zhongming，YAO Wenwu. Testing and analysis of grouting curtain in site of Qingjiang Shuibuya hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(9)：1 558–1 563.(in Chinese))
[18] 刘世明. 天荒坪抽水蓄能电站输水系统岔管区域现场高压渗透试验研究报告[R]. 杭州：华东勘测设计研究院，1994. (LIU Shiming. High pressure permeability tests of Tianhuangping pumped storage power station[R]. Hangzhou：HydroChina Huadong Engineering Corporation，1994.(in Chinese)) |
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2013, Vol. 32 
