Advanced Search
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊
Volume 34 Issue 9
Turn off MathJax
Article Contents
Abstract
References
DUAN Hong-fei, JIANG Zhen-quan, ZHU Shu-yun, XIAO Wei-guo, LI Dong-lin. Micro-mechanism of water stability and characteristics of strength softening of rock in deep mines[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(9): 1636-1645.
Citation: DUAN Hong-fei, JIANG Zhen-quan, ZHU Shu-yun, XIAO Wei-guo, LI Dong-lin. Micro-mechanism of water stability and characteristics of strength softening of rock in deep mines[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(9): 1636-1645.
shu

Micro-mechanism of water stability and characteristics of strength softening of rock in deep mines

  • School of Resources and Earth Science, China University of Mining and Technology, Xuzhou 221116, China

More Information
  • Received Date: September 01, 2011
  • Published Date: October 09, 2012
    Graphical Abstract
    • Abstract
  • In order to study the properties of water stability and the rules of strength softening of rock, systematic hydrolysis tests are carried out on rock samples from deep mines of Juye Coal Field at depth below one kilometer. The results show six types of hydrolysis deformation and failure. Based on the limit expansion quantity feature, four types of water stability properties are summarized, to demonstrate the rationality of classification by voidage. On this basis, the micro-mechanism of difference in water stability is analyzed, and the main reason lies in the difference in micro-structure and the other reasons include the relative quantitative contents of clay mineral of kaolinite, illite, illite/montmorillonite mixing layer. The strength softening feature of rock samples changes obviously after saturation and is affected by the type of their water stability properties. Moreover, it has good consistency. Layered failure mainly appears in the saturated tensile strength tests. Change in internal friction angle is the key to change in shear strength softening feature. The tensile strength tests on saturated rock samples show that the tensile strength of rock samples decreases with the increase of saturated time with a trend of an exponential decline and has a stable value at the end. The repeated immersion compression tests show that the final failure stress drops on condition of repeated immersion compression of rock samples, and strength fatigue appears. Its value is less than the failure stress of saturated samples under one-time pressure condition, and is much less than the failure stress of natural state samples. This is because the expansion effect of the internal structure of rock samples after immersion makes their internal structure soften, which reduces the connection strength of rock structure.
    • FullText(HTML)
    • References (16)
  • [1]
    肖裕行, 王泳嘉, 卢世宗, 等. 裂隙岩体水力等效连续介质存在性的评价[J]. 岩石力学与工程学报, 1999, 18(1): 75–80. (XIAO Yu-xing, WANG Yong-jia, LU Shi-zong, et al. Assessment of hydromechanically equivalent continuum model for fractured rock masses[J]. Chinese Journal of Rock Mechanics and Engineering, 1999, 18(1): 75–80. (in Chinese))
    [2]
    汤连生, 周翠英. 渗透与水化学作用之受力岩体的破坏机理[J]. 中山大学学报(自然科学版), 1996, 35(6): 95–100. (TANG Lian-sheng, ZHOU Cui-ying. Analysis on mechanism of permeation and hydrochemical action resulting in failure of loaded rock mass[J]. Acta Scientiarum Naturalium Universitatics Sunyatent (Natural Science), 1996, 35(6): 95–100. (in Chinese))
    [3]
    刘长武, 陆士良. 泥岩遇水崩解软化机理的研究[J]. 岩土力学, 2000, 21(1): 28–31. (LIU Chang-wu, LU Shi-liang. Research on mechanism of mudstone degradation and softening in water[J]. Rock and Soil Mechanics, 2000, 21(1): 28–31. ( in Chinese))
    [4]
    刘 镇, 周翠英, 朱凤贤, 等. 软岩饱水软化过程微观结构演化的临界判据[J]. 岩土力学, 2011, 32(3): 661–666. (LIU Zhen, ZHOU Cui-ying, ZHU Feng-xian, et al. Critical criterion for microstructure evolution of soft rocks in softening process[J]. Rock and Soil Mechanics, 2011, 32(3): 661–666. (in Chinese))
    [5]
    周翠英, 邓毅梅, 谭祥韶, 等. 饱水软岩力学性质软化的试验研究与应用[J]. 岩石力学与工程学报, 2005, 24(1): 33–38. (ZHOU Cui-ying, DENG Yi-mei, TAN Xiang-shao, et al. Experimental research on the softening of mechanical properties of saturated soft rocks and application[J]. Chinese Journal of Rock Mechanice and Engineering, 2005, 24(1): 33–38. ( in Chinese))
    [6]
    MARCEL ARNOULD. Discontinuity networks in mudstones: A geological approach[J]. Bulletin of Engineering Geology and the Environment, 2006, 65(4): 413–422.
    [7]
    RISNES R, HAGHIGHI H, KORSNES R I, et al. Chalk fluid interactions with glycol and bries[J]. Tectonophysics, 2003, 370(1/2/3/4): 213–226.
    [8]
    周瑞光, 曲永新, 成彬芳, 等. 山东龙口北皂煤矿软岩力学性质特性试验研究[J]. 工程地质学报, 1996, 4(4): 55–60. (ZHOU Rui-guang, QU Yong-xin, CHENG Bin-fang, et al. The mechanical properties of soft and weak rock in Longkou Coal Mine, Shangdong[J]. Journal of Engineering Geology, 1996, 4(4): 55–60. (in Chinese))
    [9]
    罗鸿禧. 南海海洋土的成份结构和物化性质[J]. 岩土力学, 1989, 10(4): 6–9. (LUO Hong-xi. The compostion microsture and physico-chemical properties of marine soil in South China Sea[J]. Rock and Soil Mechanics, 1989, 10(4): 6–9. (in Chinese))
    [10]
    杨春和, 冒海军, 王学湖, 等. 板岩遇水软化的微观结构及力学特性研究[J]. 岩土力学, 2006, 27(12): 2090–2098. (YANG Chun-he, MAO Hai-jun, WANG Xue-hu, et al. Study on variation of microstructure and mechanical properties of water-weakening slate[J]. Rock and Soil Mechanics, 2006, 27(12): 2090–2098. (in Chinese))
    [11]
    朱建明, 任天贵, 高 谦, 等. 小官庄铁矿软岩微观特性的试验研究[J]. 中国矿业, 1997, 6(4): 56. (ZHU Jian-ming, REN Tian-gui, GAO Qian, et al. Tests and research of the micro-characteristics of soft rocks of Xiaoguanzhuang Iron Mine[J]. China Mining Magazine, 1997, 6(4): 56. (in Chinese))
    [12]
    周翠英, 谭祥韶, 邓毅梅, 等. 特殊软岩软化的微观机制研究[J]. 岩石力学与工程学报, 2005, 24(3): 394–400. (ZHOU Cui-ying, TAN Xian-shao, DENG Yi-mei, et al. Research on softening micro-mechanism of special soft rocks[J]. Chinese Journal of Rock Mechanice and Engineering, 2005, 24(3): 394–400. (in Chinese))
    [13]
    周翠英, 邓毅梅, 谭祥韶, 等. 软岩在饱水过程中微观结构变化规律研究[J]. 中山大学学报（自然科学版）, 2004, 42(4): 98–102. (ZHOU Cui-ying, DENG Yi-mei, TAN Xiang-shao, et al. Research on the variation regularities of microstructures in the testing of interaction between soft rocks and water[J]. Acta Scientiarum Naturalium Universities Sun Yatsen, 2004, 42(4): 98–102. (in Chinese))
    [14]
    李 鹏, 刘 建, 朱杰兵, 等. 软弱结构面剪切蠕变特性与含水率关系研究[J]. 岩土力学, 2008, 29(7): 1865–1871. (LI Peng, LIU Jian, ZHU Jie-bing, et al. Research on effects of water content on shear creep behavior of weak structural plane of sandstone[J]. Rock and Soil Mechanics, 2008, 29(7): 1865–1871. (in Chinese))
    [15]
    乔丽苹, 刘 建, 冯夏庭. 砂岩水物理化学损伤机制研究[J]. 岩石力学与工程学报, 2007, 26(10): 2117–2124. (QIAO Li-ping, LIU Jian, FENG Xia-ting. Study on damage mechanism of sandstone under hydro-physico-chemical effects[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(10): 2117–2124. (in Chinese))
    [16]
    黄宏伟, 车 平. 泥岩遇水软化微观机制研究[J]. 同济大学学报（自然科学版）, 2007, 35(7): 866–870. (HUANG Hong-wei, CHE Ping. Research on micro-mechanism of softening and argillitization of mudstone[J]. Journal of Tongji University (Natural Science), 2007, 35(7): 866–870. (in Chinese))
    • Related Articles
  • Supplements (0)

Catalog

    Get Citation
    PDF
    XML
    Article views (1056) PDF downloads (499) Cited by()
    Related
    Copyright © 2010 Editorial By Chinese Journal of Geotechnical Engineering 苏ICP备05007122号-11公安联网备案号：32010602011255
    Editorial Office address：34 Hujuguan,Nanjing 210024,ChinaPostal Code：210024Tel：025-85829534，85829556E-mail: ge@nhri.cn

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return