基于能量法的路堤边坡冲刷量计算模型研究

基于路堤边坡冲刷防护的必要性及目前冲刷量计算模型研究存在的不足,在分析边坡径流水力学特性的基础上,根据物质能量守恒和转化原理,对边坡土水力冲刷过程从能量的角度进行描述,按能量平衡方程导出土水力冲刷的冲刷量计算模型。为了验证该模型,在石黄高速公路高填方边坡用改造的SR型人工降雨设施进行冲刷试验,得到冲刷量实测资料,用模型计算的冲刷量值与之比较,显示了模型具有较好的预测效果。

Research on erosion calculation model of the slope on energy method

Based on necessity of erosive protection for embankment slope and deficiency of research on erosion calculation model of slope, the hydraulics particularity of embankment slope is analyzed and the processes of water-erosion of slope are described on energy by the conservation and transform principle of master energy. According to the energy balance equation, the water-erosion model of slope is put forward to calculate erosive quantity. In order to verify the model, the SR style artificial rainfall simulator is rebuilt to conduct a series of experiments at high embankment segment of Shihuang freeway. The comparison analysis between the data collected in field and calculated by the model shows an ideal forecast effect of the model.