Mechanical model of slope debris flow initiation based on artificial rainfall experiment
Mechanical model of slope debris flow initiation based on artificial rainfall experiment
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作者：
Zhu Yunhua
首次采用Spencert条分法研究了人工集中降雨作用下坡面泥石流土体的稳定性，但得到的安全系数大于1，与实际情况不符，利用能量守恒原理和动量定理建立了新的力学模型，计算了土体内摩阻力系数、影响泥石流启动的渗透力和坡面稳定系数，计算结果较好地反映了坡面泥石流在降雨作用下的实际力学状态，为坡面泥石流稳定性评价和预报预报方法提供了参考。
Spencert slicing method was first used to study stability of soil body of slope debris flow under concentrated artificial rainfall in this paper.However,the safety factor obtained is greater than 1,not conform to the actual situation.Then,a new mechanical model was established through the energy conservation principle and momentum theorem to calculate the internal friction coefficient of soil body,the permeability force influencing the initiation of debris flow,and the slope stability coefficient.Results from this method reflect the actual mechanics state of the slope debris flow under the action of rainfall better and provide a reference to stability evaluation and prediction and forecast method of the slope debris flow.