摘要
北京山区泥石流经常给当地造成财产损失与人员伤亡,因此研究该地区的泥石流运动规律并进行危险区制图,具有重要实际意义.该文通过简化平面二维非恒定流的基本方程,采用LagrangeEuler型的数值计算模型(流团模型),对门头沟区几条典型泥石流沟道的泥石流运动堆积过程进行了数值模拟,并在此基础上利用绘图软件Graphtool3.3对危险区进行了绘制.经过与实地调查方法的结果对比表明,两者符合较好,验证了该文数值方法的可靠性.
Debris flows often cause destruction of property and loss of life in mountainous regions of Beijing. It is of practical significance to study the mechanisms of debris flow and map the hazard areas. By simplifying basic equations of unsteady flow in two horizontal dimensions and employing Lagrange\|Euler computing methods (Particle Model), debris flow motion and deposition processes in several typical debris gullies in Mentougou District are simulated and hazard areas are drawn through software Graph\|tool 3.3. The simulations are in good agreement with field investigations, which demonstrates the reliability of the numerical method presented herein.
出处
《北京林业大学学报》
EI
CAS
CSCD
北大核心
1999年第6期9-16,共8页
Journal of Beijing Forestry University
基金
中国博士后科学基金
关键词
北京山区
泥石流
数值模拟
危险区制图
mountainous regions of Beijing, debris flow, numerical simulation, hazard zone mapping
