澜沧江允景洪水文站历史洪水水沙关系研究

Relationship between Water and Sediment in Historical Floods at Yunjinghong Gauging Station, Lancang River

摘要: 历史洪水要素调查是水文调查工作的重点，旨在探寻水文观测期外的历史水文规律，为水利工程建设和管理提供数据支撑和科学依据。本研究以允景洪水文站历史年代汛期水位、流量和含沙量的实测数据为依据，建立关系曲线，通过对相关性的分析和检验，恢复历史时期天然河流汛期水沙关系，为后期通过洪水痕迹沉积物反演历史时期洪水要素奠定基础。

Abstract: Investigation of historical flooding elements is a key point in hydrological surveys, aiming to explore historical hydrological regime out of the period of hydrological observation and provide data support and scientific basis for the construction and management of water conservancy projects. Based on flood data gauged at Yunjinghong hydrology station, Relationship between water level, discharge and sediment content was detected. Through the analysis and test of correlation, the relationship between water and sediment of the natural river in the flood season in the historical period was restored. Results in this work could be the foundation for recovering the information of historical flood with trace deposits.