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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2009, Vol. 28 ›› Issue (3): 565-568.DOI: 10.3969/j.issn.1674-0696.2009.03.23

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水位降落期间土质岸坡稳定性劣化机理及趋势

刘厚成,唐红梅,谷秀芝   

  1. 重庆交通大学岩土工程研究所,重庆400074
  • 收稿日期:2008-11-14 修回日期:2009-04-20 出版日期:2009-06-15 发布日期:2015-04-15
  • 作者简介:刘厚成(1983—),男,湖北宜昌人、硕士研究生,主要从事边坡稳定,渗流方面的研究。Email:llhhcc126@126.com。
  • 基金资助:
    国家自然科学基金项目( 50678182); 重庆市重点自然科学基金( 2008 BA 0015)

Mechanism?and?Trend?of?Stability?Deterioration?of?Soil?Bank?Slope??during?the?Course?of?Water?Level?Declining

LIU Hou-cheng, TANG Hong-mei, GU Xiu-zhi   

  1. Institute?of?Geotechnical?Engineering,?Chongqing?Jiaotong?University,?Chongqing?400074,?China
  • Received:2008-11-14 Revised:2009-04-20 Online:2009-06-15 Published:2015-04-15

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摘要： 以三峡库区典型的土质岸坡为研究对象,通过GeoStudio软件对库区岸坡进行数值模拟,计算水库蓄水期间, 水位由175m降落到145m的工况下,岸坡的饱和-非饱和渗流场的变化趋势,研究土质岸坡稳定性劣化机理。计 算结果表明:库水位降落期间,随着渗透系数的减小,土质岸坡稳定系数下降得越快,且岸坡稳定系数曲线有相似 的下降趋势。

关键词: 岩土力学, 土质岸坡, 稳定性劣化, 变化趋势, 渗透系数

Abstract: Typical?soil?bank?slopes?of?Three?Gorges?Reservoir?area?are?taken?as?research?object.?Geostduio?software?is?adopted?to?carry?out?the?numerical?simulation?of?soil?bank?slope.?The?trend?of?transformation?of?the?saturation-instauration?infiltration?field?is?calculated?on?the?condition?that?the?reservoir?water?level?is?declining?from?175m?to?145m?during?the?reservoir?operation;?moreover,?the?mechanism?of?stability?deterioration?of?soil?bank?slope?is?studied.?The?calculation?results?demonstrate?that?during?the?course?of?water?level?of?reservoir?declining,?as?the?permeability?coefficients?of?soil?bank?slope?declines,?the?stability?coefficients?of?slope?decline?faster;?and?the?stability?coefficients?has?similar?downward?trend.

Key words: rock mechanics , soil bank slope , stability deterioration , change trend , permeability coefficients

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