高速岩质滑坡临床弹冲与峰残强降复合启程加速动力学机理  

A STUDY OF COMPLEX ACCELERATED DYNAMICS MECHANISM OF HIGHSPEED LANDSLIDE BY ELASTIC ROCKY IMPULSE AND PEAK-RESIDUAL STRENGTH DROP

作　　者：程谦恭[1] 胡厚田[1] 胡广韬[2] 彭建兵[2] 

机构地区：[1]西南交通大学地质工程系,成都610031 [2]西安工程学院,西安710054

出　　处：《岩石力学与工程学报》2000年第2期173-176,共4页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金!(49872087);中国博士后科学基金;国土资源部岩土工程开放研究实验室基金!(KF012)

摘　　要：运用断裂力学和弹性力学的原理和方法，提出并分析了逆向层状岩体斜坡锁固段突然剪断时出现的“临床弹冲－峰残强降”复合加速动力学效应，推导出二维应力状态下高速岩质滑坡启程速度计算公式。这从理论上定量地论证了具有实际意义的滑坡动力学新机理。Using the principle of fracture mechanics and elastic mechanics, a complex accelerated dynamics mechanism is proposed. This kind of dynamic effect is caused by elastic rocky impulse and peak-residual strength drop on reverse slope of stratified rocks while the locked-up segment of slope rockmass is sharply cut off. The calculating formula is proposed to deal with the acute starting velocity of highspeed rocky landslide under the plane stress condition and a new dynamic landslide mechanism is proved theoretically and quantitatively.

关 键 词：临床弹冲 峰残强降 高速滑坡 剧动启程 

分 类 号：P642.22[天文地球—工程地质学]