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Method for measuring river water and sediment synchronism
The invention provides a method for measuring river water and sediment synchronism. The method includes the steps that hydrological series data of a river control station for more than 5 years is collected; a mean value method is selected for a natural river channel to calculate a water-sediment synchronization coefficient delta Ki, and a frequency method is selected for a river channel disturbedby a major project to calculate a water-sediment synchronization coefficient delta Pi; a daily average flow fluctuation value Ni and a daily average sediment concentration fluctuation value are calculated Mi according to the mean value method of the natural river channel; a difference delta Ki between the flow fluctuation value and the sediment concentration fluctuation value is calculated day byday, wherein delta Ki=Mi-Ni; frequency assignment QP is carried out on daily average flow according to the frequency method of the disturbed river channel by the heavy project; frequency assignment SPis carried out on daily average sediment concentration; a difference delta Pi between flow frequency and sediment concentration frequency is calculated day by day, wherein delta Pi=QP-SP; and water-sediment synchronization characteristics are quantitatively analyzed according to the water-sediment synchronization coefficient delta Ki or delta Pi. According to the method for measuring river waterand sediment synchronism, the time synchronization characteristics of runoff and sediment in a drainage basin are deduced on the basis of the basic principle of hydrological statistics, the method hasclear physical meaning, and a new way is provided for quantitatively describing incoming water and incoming sediment conditions of rivers.
本发明提供一种衡量河流水沙同步性的方法，包括收集河流控制站5年以上的水文系列资料；对于天然河道选择“均值法”计算水沙同步系数δKi，对于受到重大工程扰动的河道选择“频率法”计算水沙同步系数δPi；针对天然河道的“均值法”，计算日均流量波动值Ni及日均含沙量波动值Mi；逐日计算流量波动值与含沙量波动值的差值δKi＝Mi‑Ni；针对受重大工程扰动河道的“频率法”，对日均流量进行频率赋值QP；对日均含沙量进行频率赋值SP；逐日计算流量频率与含沙量频率的差值δPi＝QP‑SP；根据水沙同步系数δKi或δPi，定量分析水沙同步特征。本发明基于水文统计的基本原理推求流域内径流与泥沙的时间同步特征，具有明确物理含义，为定量描述河流来水来沙条件提供了一种新的途径。
Method for measuring river water and sediment synchronism
The invention provides a method for measuring river water and sediment synchronism. The method includes the steps that hydrological series data of a river control station for more than 5 years is collected; a mean value method is selected for a natural river channel to calculate a water-sediment synchronization coefficient delta Ki, and a frequency method is selected for a river channel disturbedby a major project to calculate a water-sediment synchronization coefficient delta Pi; a daily average flow fluctuation value Ni and a daily average sediment concentration fluctuation value are calculated Mi according to the mean value method of the natural river channel; a difference delta Ki between the flow fluctuation value and the sediment concentration fluctuation value is calculated day byday, wherein delta Ki=Mi-Ni; frequency assignment QP is carried out on daily average flow according to the frequency method of the disturbed river channel by the heavy project; frequency assignment SPis carried out on daily average sediment concentration; a difference delta Pi between flow frequency and sediment concentration frequency is calculated day by day, wherein delta Pi=QP-SP; and water-sediment synchronization characteristics are quantitatively analyzed according to the water-sediment synchronization coefficient delta Ki or delta Pi. According to the method for measuring river waterand sediment synchronism, the time synchronization characteristics of runoff and sediment in a drainage basin are deduced on the basis of the basic principle of hydrological statistics, the method hasclear physical meaning, and a new way is provided for quantitatively describing incoming water and incoming sediment conditions of rivers.
本发明提供一种衡量河流水沙同步性的方法，包括收集河流控制站5年以上的水文系列资料；对于天然河道选择“均值法”计算水沙同步系数δKi，对于受到重大工程扰动的河道选择“频率法”计算水沙同步系数δPi；针对天然河道的“均值法”，计算日均流量波动值Ni及日均含沙量波动值Mi；逐日计算流量波动值与含沙量波动值的差值δKi＝Mi‑Ni；针对受重大工程扰动河道的“频率法”，对日均流量进行频率赋值QP；对日均含沙量进行频率赋值SP；逐日计算流量频率与含沙量频率的差值δPi＝QP‑SP；根据水沙同步系数δKi或δPi，定量分析水沙同步特征。本发明基于水文统计的基本原理推求流域内径流与泥沙的时间同步特征，具有明确物理含义，为定量描述河流来水来沙条件提供了一种新的途径。
Method for measuring river water and sediment synchronism
一种衡量河流水沙同步性的方法
LIU YA (author) / CHEN SIHAN (author) / ZHU YONGHUI (author) / DENG CAIYUN (author) / TAO MING (author) / WANG QIAN (author)
2021-01-01
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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