摘要
分析了内涝灾害的成因,评估方法、评估内容,以城市地表与明渠河道水流运动为主要模拟对象构建内涝数学模型,并应用于阳原县.根据该县的地理信息特征设计多边形的计算网格,对2013年8月9日的暴雨进行模拟.模拟的积水误差在2cm以内的大约占85%,只有12%的网格模拟的积水误差大于3cm.因此,通过此模型能够良好的预测降水量,使得在内涝灾害评估中及时发现安全隐患,在一定程度上减少人员财产的损失,保护了国家和人民的利益.
The reason of waterlogging disasters,assessment methods,and assessment content are analyzed.Waterlogging mathematical model is constructed to urban surface and Open Channel Flow Movement as the main simulation object,and the model is applied to Yangyuan County.Computing grid polygon feature is designed according to the county＇s geographic information.Storm is modeled in August 9,2013.Water simulation within 2cm error of approximately 85%,only 12%of the water grid simulation error is greater than 3cm.Therefore,this model can predict good rainfall,safety hazards to be identified in waterlogging disaster assessment,to a certain extent,reduce the loss of personnel and property and protect the interests of the country and the people.
出处
《河北建筑工程学院学报》
CAS
2014年第4期116-119,共4页
Journal of Hebei Institute of Architecture and Civil Engineering
基金
河北省教育厅科技青年基金(QN2014198)
关键词
数学模型
内涝灾害
风险评估
网格
mathematical model
waterlogging disasters
risk assessment
grid
