应用随机振动理论分析岩块的起动过程  

Analysis of lifting process for a rock block in a plunge pool by use of the theory of random vinbration

作　　者：刘沛清[1] 冬俊瑞[2] 余常昭[2] 

机构地区：[1]北京航空航天大学 [2]清华大学水电系

出　　处：《水利学报》1997年第11期1-10,共10页Journal of Hydraulic Engineering

基　　金：国家自然科学基金;博士后基金

摘　　要：本文利用随机振动理论分析了岩块的起动过程，建立了岩块振动过程和脉动上举力之间的统计联系，并在此基础上探讨了岩块的起动条件，导出平衡冲刷时间和冲刷深度发展过程的公式．y using the theory of random vibration, the process of random vibration for a rock block in a plunge pool is analyzed in details and the statistical relationship between the vibrating process for a rock block and a fluctuating uplift force is obtained. Then, the stability condition for a rock block and the predicting formulae for the equilibrium scouring time and the developmemt of scour depth are derived.

关 键 词：岩块 起动过程 随机振动 河床 冲刷 

分 类 号：TV698.17[水利工程—水利水电工程]