考虑滑面材质的碎屑流试验堆积特征分析

Analysis of the accumulation characteristics of the debris flow experiment considering slip surface material

为分析高速远程滑坡运动与堆积特征,在室内设置物理试验模型,设计级配、坡角、碎屑流质量、滑面材质4种因素,分析各因素对碎屑流堆积特征的影响。研究结果表明:坡角减小、滑面更粗糙使部分颗粒堆积或滞留于坡面,颗粒堆积特征与颗粒完全堆积于坡底时相比存在差异;滑面材质与冲程等堆积特征基本呈负相关,坡角与堆积特征基本呈正相关,二者对堆积特征影响最大;碎屑流质量与堆积特征基本呈负相关,对颗粒堆积特征分布影响较小;级配与颗粒堆积特征无明显相关性。

In order to analyze the movement and accumulation characteristics of rock avalanche,a laboratory experiment was set up indoors,and designed with 4 factors,namely,gradation,slope angle,quality of debris flow,and slip surface material,which were used to analyse the effects of each factor on the accumulation characteristics of debris flows.The research results show that the reduced slope angle and rougher slip surface caused some of the particles to accumulate or be retained on the slope surface,and that there were differences in the characteristics of particle accumulation compared to when the particles were completely accumulated at the bottom of the slope.Slip surface material is basically negatively correlated with accumulation features such as stroke,and slope angle is basically positively correlated with accumulation features,and the two have the greatest influence on accumulation features.The quality of debris flow is basically negatively correlated with accumulation features,and has less influence on the distribution of particles accumulation features.Gradation has no significant correlation with particle accumulation characteristics.