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.
出处
《岩石力学与工程学报》
CSCD
北大核心
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)
关键词
临床弹冲
峰残强降
高速滑坡
剧动启程
elastic impulse
peak-residual strength drop
highspeed landslide
acute starting
