摘要
在观察资料的基础上,提出了泥石流发育的渗流(Percolation)模型。由类比得到泥石流爆发的临界值P_c=d/(Z(d-1)),其中d是欧氏空间维数,z是配位数。根据广义Fibonacci数列,得到临界状态时的分形维数D_t(p,q)=In N/2ln,其中p、q是与人类活动、环境因素有关的参数.用以上结果对段家河流域的泥石流的发生作了理论分析。
Based on the observed facts of debris flow, a percolation model for the evolution of debris flow in Duanjia River Drainage is proposed in this paper. The critical point probability of the debris flow eruption is given by Pc = d/z(d-1), where d and z are the Euclidean dimention and ordinate number, respectively. According to the generalized Fibonacci series, the fractal dimention, Df(p,q)=lnN/2ln( ) is obtained for thecritical state, here p and q are the parameters relating to the human activity and the natural environment conditions. Using above-mentioned theoritical results, the evolution and eruption of debris flow in Duanjia River Drainage are discussed.
出处
《中国地质灾害与防治学报》
CSCD
1993年第3期37-43,共7页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金资助项目
