摘要
针对坠落式危岩,考虑自重和裂隙水压力影响因素作用下,建立危岩崩落激振效应物理模型。联合断裂力学和波动理论从能量角度量化危岩体之间的相互作用,获取崩塌体崩落瞬间的启程速度计算式,根据危岩崩落激振波在岩体内的传播机理,构建了激振波作用下岩体介质质点位移速度计算方法。通过实例分析,建立的坠落式危岩剧动式崩落与激振效应分析结论和实际情况基本一致,对进一步实施危岩破坏及演化机制研究提供了科学依据。
The physical model of perilous rock avalanche excitation effect is deudofed based on the effect of the main factors,such as weight and fissure water pressure.It quantizes the interaction of perilous rock masses through the energy point of fracture mechanics and wave theory,and gains the departure rate formula of landslide body at momentary avalanche.The particle displacement rate calculation method of perilous rock medium under the action of excitation waves is developed based on the formation of perilous rock avalanche excitation waves and the spread mechanism in slope rock formation.The example shows that the analysis results established are coincident with actual situation.Some scientific basis is provided for the further research of perilous rock damage and evolutionary mechanisms.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第10期39-45,共7页
Journal of Chongqing University
基金
国家自然科学基金资助项目(50678182)
关键词
岩石力学
激振波
应变能
危岩
主控结构面.
rock mechanics
excitation wave
strain energy
perilous rock
dominant fissure
