CAJ | 학술논문

山区泥石流中粗大颗粒物质的运动、堆积和再启动等过程对泥石流灾害的形成具有特殊的意义.将成分复杂的泥石流体划分为连续性的水沙混合流浆体和随机分布在浆体中粗大固体物质,基于角动量、动量守恒原理,通过分析泥石流流场中的颗粒间、颗粒和泥石流浆体间、颗粒和床面间的复杂作用力,建立了适用于模拟泥石流中大颗粒运动的模型方程.将模型应用于舟曲三眼峪泥石流模拟,计算结果表明:模拟结果较好反映了泥石流粗大颗粒物质的运动和停淤现象.该模型可为分析大颗粒物质对泥石流灾害形成的分析提供借鉴.
산구니석류중조대과립물질적운동、퇴적화재계동등과정대니석류재해적형성구유특수적의의.장성분복잡적니석류체화분위련속성적수사혼합류장체화수궤분포재장체중조대고체물질,기우각동량、동량수항원리,통과분석니석류류장중적과립간、과립화니석류장체간、과립화상면간적복잡작용력,건립료괄용우모의니석류중대과립운동적모형방정.장모형응용우주곡삼안욕니석류모의,계산결과표명:모의결과교호반영료니석류조대과립물질적운동화정어현상.해모형가위분석대과립물질대니석류재해형성적분석제공차감.
The dynamic characteristics of debris flow in mountainous area have specific meaning to the form of mudslides. In the paper,a deterministic model for predicting the flow of suspensions of particles in viscous debris flow is presented. The debris flow with components complex was divided into continuous mixed flow and randomly distribute large particles. The complex forces between particles and particle,parti?cles and debris flow slurry,particles and bed were analyzed in debris flow based on the laws of conserva?tion of linear momentum and angular momentum. The model is applied to simulate the debris flow events in Sanyanyu Gully, Gansu Province,the results show the effectiveness of the proposed numerical model in the motion and siltation of large particles. It will carry out a theory basis for analyzing the large particles contribution to the form of mudslides.