汾河下游降雨对洪水特性的影响分析  

Influence of downstream rainfall on flood characteristics of Fenhe River

作　　者：樊盼[1] 

机构地区：[1]山西水利职业技术学院,山西运城044004

出　　处：《广西水利水电》2016年第6期16-18,22,共4页Guangxi Water Resources & Hydropower Engineering

摘　　要：受汾河下游河段的石滩、柴庄等水文站受灵霍山峡特殊地形的影响，其洪峰流量大于中游河段。为了了解汾河流域下游降雨对洪水特性的影响，选取柴庄一河津段的洪水进行实例分析。结果：区间主降雨量与洪峰流量大致成正比关系，河津断面的洪水主要由柴庄以上的洪水沿河道演进而来；上下游水文站洪峰流量之间成正相关规律，其传播时间随着洪峰流量的增大而增大；成果可供该区域洪水预报参考。Shitan and Chaizhuang hydrological stations are located on the lower reaches of Fenhe River, where the peak flow is greater than that of middle reaches due to special terrain of Huoshan Gorge. In order to learn more about the influence of downstream rainfall on flood characteristics of Fenhe River, floods within the river section from Chaizhuang to Hejin were analyzed. The results of analysis demonstrate that intervening main rainfall is approximately proportional to the flood peak flow; flood at Hejin section mainly is composed of floods developing along river channel upstream of Chaizhuang. The peak flows of upstream and downstream hydrological stations are positive correlation. The travel time of flood increases with increase of peak flow. Achievements of study may be reference of flood forecasting in this area.

关 键 词：降雨量 洪水特性 洪峰流量 传播时间 汾河 

分 类 号：TV122[水利工程—水文学及水资源] P332[天文地球—水文科学]