Volume 15 Issue 6
Apr.  2011
Turn off MathJax
Article Contents
HUANG Qiangbing, LIU Yue, Peng Jianbing. 2007: TRIAXIAL TEST STUDY ON THE DEFORMATION AND FAILURE MECHANISM OF LOESS CUT SLOPE. JOURNAL OF ENGINEERING GEOLOGY, 15(6): 806-811.
Citation: HUANG Qiangbing, LIU Yue, Peng Jianbing. 2007: TRIAXIAL TEST STUDY ON THE DEFORMATION AND FAILURE MECHANISM OF LOESS CUT SLOPE. JOURNAL OF ENGINEERING GEOLOGY, 15(6): 806-811.

TRIAXIAL TEST STUDY ON THE DEFORMATION AND FAILURE MECHANISM OF LOESS CUT SLOPE

Funds:

  • Received Date: 2006-12-25
  • Rev Recd Date: 2007-03-23
  • Publish Date: 2007-11-29
  • The stress-strain relationship of loess with different depth and water content of loess slope is studied with the reduced triaxial compress test of undisturbed loess and compared with the results of conventional triaxial compress test of undisturbed loess. It is pointed that the deformation and failure process of loess slope under excavation and unloading can be reasonably explained by the reduced triaxial compress test. The test results show that the surface unsaturated loess of loess slope with toe excavation is easy to appear strain softening or plastic flow, and strength reduction, the deep layer saturated loess appears strain softening under the condition of mid-lower confining pressure and strain hardening and strength increase under high confining pressure. Then, based on the results of reduced triaxial compress test, deformation mechanism analysis of loess cut slope is made. It is considered that the particular engineering geological conditions of loess slope leads to a disadvantageous combination of water content and confining pressure to the strength of soil. Then the disadvantageous combination causes deformation and failure of soil mass and slope. The deformation and failure mechanism of loess slope under excavation belongs to creeping slide and crack arising from pressing or retrogressive slide.
  • loading
  • [1] 雷祥义.陕西关中人为黄土滑坡类型的研究
    [J].水文地质工程地质,1996,23(3):36~42.Lei X iangyi. S tudy on the types loess lands lides caused by hum an activities in area of G uanzhong Shannx.i H yd rogeology and Engineering G eo logy,1996,23(3):36~42.

    [2] 王恭先.滑坡防治方案的选择与优化
    [J].岩石力学与工程学报,2006,25(Supp.2):3867~3873.W ang G ongx ian.Choice and op tmi izat ion of land slid e con trol p lan.Ch inese Jou rnal of R ock M ech an ics and E ngineering,2006,25(supp.2):3867-3873.

    [3] 王传仁.公路工程与滑坡灾害
    [A].滑坡文集(第十四集)
    [C].北京:中国铁道出版社,2000.W ang C hu anren.H ighway eng ineering and lands lide h azards.Lands lide Sym pos ium(V o.l 14).B eijing:C h ina R a iwl ay Publ ishing H ou se,2000.

    [4] D erbysh ire Ed.G eological hazards in loess terrain,w ith part icu larreference to the loess reg ions of C h ina
    [J].E arth-Science R eview s,2001,54(1~3):231~260.

    [5] D i jkstra T A.G eotechn ical threshold s in the Lanzhou loess of Ch in a
    [C].Q uatern ary In ternationa,l 2001,76~77,21~28.

    [6] Sassa K yoji. U nd rain ed dynam ic-load ing ring-shear apparatus and its app licat ion to lands lide dynam ics
    [J].Landslides,2004,1,7~19.

    [7] Baum ler Rup ter.Pedogen ic s tud ies in A eolian d epos it in th e high m oun tain area of eastern N epal
    [J].Q uaternary Intern at ion a,l 2001,93~102.

    [8] 王家鼎,肖树芳,张倬元.灌溉诱发高速黄土滑坡的运动机理
    [J].工程地质学报,2001,9(3):241~246.W ang J iading,X iao Shufang,Zhang X huoyu an.The m echan ism for m ovem en t of irrigation-indu ced h igh-speed loess landsl ides.Jou rnal of Engin eering G eo logy,2001,9(3):241~246.

    [9] 王家鼎,张倬元.地震诱发高速黄土滑坡的机理研究
    [J].岩土工程学报,1999,21(6):670~674.W ang J iading,Zhang Zhuoyuan.A study on them echan ism of high-speed loess land slid es induced by earthqu ake.Ch inese Jou rnal of G eotechn ical Engin eering,1999,21(6):670~674.

    [10] 吴玮江,王念秦.黄土滑坡的基本类型与活动特征
    [J].中国地质灾害与防治学报,2002,13(2):36~40.W u W eijiang,W ang N ianq in.Bas ic typ es and act ive features loess lands lides.Ch in ese Jou rnal of G eo log ical H azard and C ontro,l 2002,13(2):36~40.

    [11] 程谦恭,张倬元,崔鹏.平卧!支撑拱?锁固滑坡动力学机理与稳定性判据
    [J].岩石力学与工程学报,2004,23(17):2855~2864.Ch eng Q iangong,Zhang Zhuoyuan.Cu i Peng.D ynam icalm echa nism and stab ility criterion of land slide under lockup of soil arching.Ch inese Jou rnal of R ock M echan ics and Eng ineering,2004,23(17):2855~2864.

    [12] 党进谦,李靖.非饱和黄土的结构强度与抗剪强度
    [J].水利学报,2001,32(7):79~83.D ang Jinq ian,L i J ing.Th e stru ctural strength and sh ear strength of unsatu rated loess.Jou rn al of H yd rau lic E ngineering 2001,32(7):79~83.

    [13] 邵江,李仁成,周德培,谢红强.近水平红层路堑边坡滑动机理和防治对策
    [J].工程地质学报,2005,13(2):174~178.Shao Jiang,et al..Prel mi in ary study of th e s lip m echan ism and the s top ing m ethod on the land slide of the approxmi ately horizon tal excavated s lope in red beds.Journal of E ngineering G eology,2005,13(2):174~178.

    [14] 赵建军,黄润秋,巨能攀,涂国祥,肖华波.下伏软弱层黄土边坡变形机制分析及治理对策研究
    [J].工程地质学报,2006,14(6):743~748.Zhao Jian jun,et al..D eformat ion m echan ism of loess s lope w ith w eak in terlayer and its stab ilizat ion m easu res.Journ al of E ngineering G eology,2006,14(6):743~748.

  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views (3476) PDF downloads(1078) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint