摘要
当前,水库大坝受到超频率的洪水以及强震破坏,而容易导致溃决风险。针对水库大坝溃决相关问题,融合BREACH和MIKE21构建耦合模型,并用于溃坝洪水数值模拟试验。结果表明,7种方案最大下泄流量为方案1的18.39×10^(4) m^(3)/s;方案1洪峰向地点C汇入点的洪水最大流量比邢台坝址下降约44%。方案1的溃坝洪水水位始终最高,A地最高为306m。综合来看,耦合模型在水库溃坝洪水数值模拟中具备有效性,在实际的水库防洪避险中具备实用性。
At present,the dam of the reservoir is vulnerable to the risk of collapse due to the over-frequency flood and strong earthquake damage.Therefore,in view of the problems related to the dam break of the reservoir,a coupling model was built by combining BREACH and MIKE21,and was used in the numerical simulation experiment of the dam break flood.The results show that the maximum discharge flow of 7 schemes is 18.39×10^(4) m^(3)/s of scheme 1;the maximum flood discharge at the confluence point of flood peak to location C in scheme 1 is about 44%lower than that at Xingtai dam site.The dam-break flood level in scheme 1 is always the highest,and the highest level in area A is 306m.In general,the coupling model is effective in the numerical simulation of reservoir dam-break flood and practical in the actual reservoir flood control and risk avoidance.
作者
管静
GUAN Jing(Hebei Chengde Hydrological Survey and Research Center,Chengde 067000,Hebei,China)
出处
《水利科技与经济》
2024年第2期109-114,共6页
Water Conservancy Science and Technology and Economy
