摘要
应用二维非恒定流理论，对泥石流堆积泛滥过程进行了数值模拟。基于绘制泥石流堆积区域流速分布图和泥深分布图的基本思想，用隐式剖开算子法求解泥石流扩散过程的二维非恒定流方程组，建立了预测泥石流堆积危险范围的数学模型，通过实例应用与检验，符合性较好，是一种值得推广应用的方法。泥石流堆积泛滥范围预测数学模型的建立，在减轻泥石流灾害中可以发挥十分重要的作用。
A mathematical model of debris flow inundation process has been developed,based on thetwo- dimensional unsteady flow equations.In order to draw up the velocity and depth distribution mapof debris flow inundating on alluvial fans,auther makes use of 'Methods of Splitting Operator'to solve 2-dimensional equations of debris flow motion.A mathematical model of predictingrisk areas likely tobe flooded by debris flow has been established.The example application and test show that this modelhas a good stability and accuracy,which is method worthy of extension and application.The establish-ment of the model for prediction of risk areas of debris flow inundation will play an important role inthe reduction of debris flow disaster。
出处
《水土保持学报》
CSCD
北大核心
1994年第1期45-50,共6页
Journal of Soil and Water Conservation
基金
国家自然科学基金
关键词
泥石流
堆积泛滥
预测模型
debris flow deposition and inundation numerical simulation prediction model
