摘要
为合理评价山洪沟道防冲建筑物壅水风险,基于Saint-Venant方程组和Villemonte堰流公式,构建了防冲建筑物壅水风险评估水动力模型。根据防冲建筑物的实际情况和设计要求,将防冲建筑物概化为薄壁堰。将该模型应用于防冲建筑物分布密集的宁夏北武当沟,分析评估梯级防冲坎壅水风险,并提出优化措施建议。计算结果表明:所建模型能够较精确地模拟山洪演进过程和防冲建筑物壅水风险,充分体现了防冲建筑物的阻水效果。研究成果对沟道山洪的精细仿真模拟与风险评估具有一定参考价值。
In order to reasonably evaluate the backwater risk of anti-scour structures in a gulley,this paper built a one-dimensional hydrodynamic model of the backwater risk assessment based on the Saint-Venant equation and the Villemonte weir flow formula.According to the actual properties of anti-scour structure and design requirements,the anti-scour structure was generalized into a sharp-crested weir.The model was applied to analyze and evaluate the risk of cascade anti-scour structures in Beiwudang channel.Application results of Beiwudang gulley show that the model can accurately analyze the characteristics of the backwater and the influence of torrential flood.The model also shows the water blocking effect of the anti-scour structures completely.The results of the analysis have a certain reference value for the fine simulation of torrential flood.
作者
郭立兵
田福昌
曹鲁赣
苑希民
GUO Libing;TIAN Fuchang;CAO Lugan;YUAN Ximin(Flood Control and Drought Relief Headquarters Office of Ningxia,Yinchuan 750001,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)
出处
《人民黄河》
CAS
北大核心
2018年第9期40-43,共4页
Yellow River
基金
国家重点研发计划项目(2017YFC0405601)
高等学校学科创新引智计划项目(B14012)
科技部重点领域创新团队项目(2014RA4031)
国家自然科学基金创新研究群体项目(51621092)
