摘要
对深圳水库高边坡的局部和整体稳定性、边坡滑动位移以及边坡失稳的突变特性进行了分析,并着重分析了地下水及土体水弱化性质对边坡稳定性的影响。边坡失稳突变特性的分析采用突变理论模型。边坡的稳定性分析和位移计算结果表明,边坡失稳主要是由地下水的影响及土的水致弱化性质引起的。突变理论模型分析也表明,水的作用使土的强度降低为某一数值时,边坡的滑动位移将突然增大,发生突变性失稳现象。理论分析结果与现场监测结果相符,可为边坡的整治提供科学依据。
Analyses on local and global stability,slip displacements and catastrophic property of landslide of Shenzhen reservoir slope are given,and effect of groundwater and soil weakening property by water on slope stability is emphatically studied. Catastrophe of landslide of slope is analyzed by the use of catastrophic theory model. The calculated results of stability and displacements indicate that unstability of slope is mainly caused by groundwater affection and soil weakening by water,and catastrophic analysis also indicates that slip displacements increase sharply and slope unstability arises suddenly when shear strength of soil is reduced to certain value due to soil weakening. The theoretical results are in good agreement with those of in-situ test and are able to provide scientific basis for slope protection.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第6期906-910,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
广东省自然科学基金(010054)
关键词
深圳水库
高边坡
稳定性
工程地质
应力软化
位移突变
engineering geology,Shenzhen reservoir,slope stability,stress softening,soil weakening by water,suddenly jumping of displacement
