临沂角沂水文站单断沙综合关系分析研究

Analysis and Research on the Index-sectional Sediment Concentration Relation at Jiaoyi Hydrological Station in Linyi

摘要:

通过相关系数法对角沂水文站2022—2024年56次实测输沙率成果进行分析,得到符合规范要求的单断沙综合关系曲线,系数k为0.991,Cs_断=0.991Cs_单(Cs_断为断面含沙量,Cs_单为单样含沙量)。通过分析,角沂水文站单样含沙量在0.014~5.50 kg/m3范围内,悬移质输沙率可以运用此率定曲线推求单沙与断沙关系。研究成果可为优化角沂水文站含沙量测验方案提供参考,达到精简测验内容,提高工作效率的目的,同时为后续的水利工程规划、河道治理等提供科学依据,进而改善区域的水生态环境,保障流域内的人民生命财产安全。

Abstract:

Based on the correlation coefficient method, 56 measured sediment discharge data sets from 2022 to 2024 at Jiaoyi Hydrological Station were analyzed, and it's obtained that the index-sectional sediment concentration relation curve meeting the standard requirements with a coefficient k of 0.991, expressed as Cs_断 = 0.991Cs_单 (where Cs_断 is cross-section sediment concentration and Cs_单 is single sample sediment concentration). The analysis shows that at Jiaoyi Hydrological Station when the single sample sediment concentration ranges from 0.014 to 5.50 kg/m3, the suspended sediment discharge can be calculated using this calibrated curve to derive the relation between single sample and cross-section sediment. The research results can provide a reference for optimizing the sediment concentration measurement scheme at Jiaoyi Hydrological Station, simplifying measurement items and improving the efficiency. Meanwhile, they offer a scientific basis for subsequent water project planning, river regulation and similar works, thereby improving the regional water ecological environment and ensuring the safety of people's lives and property in the basin.