声学多普勒流速仪输沙率测验在长江上中游应用试验研究
|
摘要
长江流域的各水文大站,一般均采用ADCP进行流量测验,然而输沙率依然采用传统方法。应用ADCP的反向散射信号计算出悬移质含量,进而计算出整个断面的输沙率,不仅可以大幅度的减轻工作量、减少投入、保障安全,而且可以在同等条件下得到更多的系列资料,丰富水文测验成果。在洞庭湖南咀站、长江干流汉口、大通站进行的"ADCP测沙"试验表明,通过ADCP声信号与含沙量的相关关系,可以检查、控制测验成果的质量,若相关关系达到0.6以上,输沙率误差将小于6%。因此,在长江流域的部分测站,应用ADCP进行输沙率测验是可行的,质量是可控的。
How to improve the efficiency of sediment discharge measurement has been a challenge in hydrological measurement.ADCPs are generally used for discharge measurement at most hydrometry stations in the Yangtze River Basin.However,the sediment discharge is still measured with traditional method.By calculating the suspended sediment concentration based on ADCP backscatter intensity and thus calculating the sediment discharge of the whole cross section,it can not only reduce workload significantly,minimize investment and ensure security,but also can obtain more information under the same conditions.The tests of using ADCP to estimate suspended sediment concentration have been respectively carried out at the stations of Nanju,Dongting and Datong on the Yangtze River.The research shows that the relationship between ADCP acoustic intensity and sediment can be used to check and control the quality of tests.In other words,if the relationship is more than 0.6,the error of sediment discharge measurement will be less than 6%.Therefore,it is feasible to use ADCP for sediment discharge measurement at some hydrometry stations in the Yangtze River Basin and the quality is controllable.
How to improve the efficiency of sediment discharge measurement has been a challenge in hydrological measurement.ADCPs are generally used for discharge measurement at most hydrometry stations in the Yangtze River Basin.However,the sediment discharge is still measured with traditional method.By calculating the suspended sediment concentration based on ADCP backscatter intensity and thus calculating the sediment discharge of the whole cross section,it can not only reduce workload significantly,minimize investment and ensure security,but also can obtain more information under the same conditions.The tests of using ADCP to estimate suspended sediment concentration have been respectively carried out at the stations of Nanju,Dongting and Datong on the Yangtze River.The research shows that the relationship between ADCP acoustic intensity and sediment can be used to check and control the quality of tests.In other words,if the relationship is more than 0.6,the error of sediment discharge measurement will be less than 6%.Therefore,it is feasible to use ADCP for sediment discharge measurement at some hydrometry stations in the Yangtze River Basin and the quality is controllable.
引文
[1]张志林,史芳斌,胡国栋.ADCP反向散射强度估算悬移质浓度的原理及其应用[M].武汉:长江出版社,2008.(ZHANG Zhilin,SHI Fangbin,HU Guodong.Principle and Its Application of Calculating Suspended Sediment Concentration Based on Acoustic Backscatter of ADCP[M].Wuhan:Changjiang Press,2008.(in Chinese))
[2]张志林,高敏,廖建英.徐六泾站悬移质含沙量比测与精度分析[J].人民长江,2010,41,(6):48-52.(ZHANG Zhilin,GAO Min,LIAO Jianying.Testing on suspended sediment concentration measurement at the Xuliujing station and its accuracy evaluation[J].Yangtze River,2010,41(6):48-52.(in Chinese))
[3]张志林,邓乾焕,朱巧云,钱峰.基于ADCP反向散射强度估算悬沙浓度在洋山港的应用研究[J].水文.2011,(2):62-68.(ZHANG Zhilin,DENG Qianhua,ZHU Qiaoyun,QIAN Feng.Application of ADCP backscattering intensity in estimating suspended sediment concentration at Yangshan port[J].Journal of China Hydrology,2011,(2):62-68.(in Chinese)
[4]余文畴.长江河道演变与治理[M].北京:中国水利水电出版社,2005.(YU Wenchou.Evolution and Regulation of Yangtze River Channel[M].Beijing:China WaterPower Press,200S.(in Chinese))
[5]张志林,朱巧云.徐六泾站悬沙输沙量观测和计算方法研究报告[R].2009.(ZHANG Zhilin,ZHU Qiaoyun.Research on the suspended sediment discharge observation and calculation method at the Xuliujing station[R].2009.(in Chinese)
[6]王志东,方华山.基于ADCP估算悬移质输沙率的应用研究[J].港工技术,2010,(4).(WANG Zhidong,FANG Huashan.Appilication research on suspended sediment transport rate estimation based on ADCP[J].Port Engineering Technology,2010,(4).(in Chinese)
[2]张志林,高敏,廖建英.徐六泾站悬移质含沙量比测与精度分析[J].人民长江,2010,41,(6):48-52.(ZHANG Zhilin,GAO Min,LIAO Jianying.Testing on suspended sediment concentration measurement at the Xuliujing station and its accuracy evaluation[J].Yangtze River,2010,41(6):48-52.(in Chinese))
[3]张志林,邓乾焕,朱巧云,钱峰.基于ADCP反向散射强度估算悬沙浓度在洋山港的应用研究[J].水文.2011,(2):62-68.(ZHANG Zhilin,DENG Qianhua,ZHU Qiaoyun,QIAN Feng.Application of ADCP backscattering intensity in estimating suspended sediment concentration at Yangshan port[J].Journal of China Hydrology,2011,(2):62-68.(in Chinese)
[4]余文畴.长江河道演变与治理[M].北京:中国水利水电出版社,2005.(YU Wenchou.Evolution and Regulation of Yangtze River Channel[M].Beijing:China WaterPower Press,200S.(in Chinese))
[5]张志林,朱巧云.徐六泾站悬沙输沙量观测和计算方法研究报告[R].2009.(ZHANG Zhilin,ZHU Qiaoyun.Research on the suspended sediment discharge observation and calculation method at the Xuliujing station[R].2009.(in Chinese)
[6]王志东,方华山.基于ADCP估算悬移质输沙率的应用研究[J].港工技术,2010,(4).(WANG Zhidong,FANG Huashan.Appilication research on suspended sediment transport rate estimation based on ADCP[J].Port Engineering Technology,2010,(4).(in Chinese)
目录