基于GIS和流团模型的泥石流模拟系统的研究
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摘要
自然灾害长期以来严重威胁并阻碍着人类的生产和生活,特别是近年来由于山洪和地震等诱发的泥石流次生灾害,造成了大量的人员伤亡与财产损失。但随着人们对灾害研究的深入和计算机学科的发展,面对此类灾害人们不再被动。为实现对泥石流自然灾害的虚拟重现和分析预测,以计算机仿真为手段,GIS技术和流团模型为基础实现泥石流模拟系统。通过用户提供的地形数据,根据流团模型对泥石流进行仿真。利用GIS技术获得泥石流运动范围内的相关信息,并且对泥石流数据的动能、动量、流速、泥深的染色进行分析。系统对云南东川地区的泥石流流域进行仿真测试,得到了较好的仿真效果,可为实际应用提供依据。
Natural disasters have always threatened the security of life and fortune of humanity.Particularly in recent years,such secondary disasters like debris flow caused by waterflood and earthquake have caused large casualties and property losses.But with the development of disaster research and computer technology,people are not passive when facing disasters.In order to achieve the natural disasters of debris flow's virtual reproduction and analysis forecasts,with the core of computer simulation technology,debris flow simulation system based on GIS technology and flow model is implemented.Topographic data provided by the user,according to the flow model to simulate the debris flow.By GIS technology,access to information in the debris flow within the range of motion,and analyze the debris flow data of the kinetic energy,momentum,velocity,deep mud stained.System is used in Dongchuan,Yunnan and has obtained good simulation results.
Natural disasters have always threatened the security of life and fortune of humanity.Particularly in recent years,such secondary disasters like debris flow caused by waterflood and earthquake have caused large casualties and property losses.But with the development of disaster research and computer technology,people are not passive when facing disasters.In order to achieve the natural disasters of debris flow's virtual reproduction and analysis forecasts,with the core of computer simulation technology,debris flow simulation system based on GIS technology and flow model is implemented.Topographic data provided by the user,according to the flow model to simulate the debris flow.By GIS technology,access to information in the debris flow within the range of motion,and analyze the debris flow data of the kinetic energy,momentum,velocity,deep mud stained.System is used in Dongchuan,Yunnan and has obtained good simulation results.
引文
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[11]Brooks S,Whalley J L.Multilayer hybrid visualizations to sup-port 3D GIS[J].Computers,Environment and Urban Systems,2008,32(4):278-292.
[2]刘明德,林杰斌.地理信息系统GIS理论与实物[M].北京:清华大学出版社,2006.
[3]Takahashi T,Tsujimoto H.Delineation of the debris flow haz-ardous zone by a numerical simulation method[C]//Proc.ofInt Symp.on Erosion,Debris Flow and Disaster Prevention.Tsukuba,Japan:[s.n.],1985:457-462.
[4]Wang Guangqian.Particle Model for Alluvial Fan Formation[J].Debris Flow Hazards Mitigation,ASCE,1997(2):143-152.
[5]管群,韦方强.基于实时数值模拟的泥石流危险性分区系统研究[J].计算机应用研究,2006(12):126-132.
[6]邬伦,刘瑜,张晶,等.地理信息系统原理、方法和应用[M].北京:科学出版社,2001.
[7]赵林度,林冲.基于GIS的城市重大危险源应急管理协同机制[J].城市技术,2007(6):51-57.
[8]罗元华.泥石流堆积数值模拟及泥石流灾害风险评估方法研究[D].武汉:中国地质大学,1998.
[9]费祥俊,舒安平.泥石流运动机理与灾害防治[M].北京:清华大学出版社,2004:104-108.
[10]马宗源.泥石流流场的三维数值模拟研究[D].西安:长安大学,2006.
[11]Brooks S,Whalley J L.Multilayer hybrid visualizations to sup-port 3D GIS[J].Computers,Environment and Urban Systems,2008,32(4):278-292.
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