The instabilities of the rock mass slope with regular weak intercalated layers are discussed;and a slope of swallowtail catastrophe model with the catastrophe theory is established.

• 针对含软弱夹层岩体边坡失稳问题,考虑软弱夹层的应变弱化特性,运用突变理论方法,建立燕尾型突变模型。