利用ADCP回波强度估算河流悬移质含沙量的应用研究

发布时间：2018-03-02 02:24

本文关键词： ADCP 回波强度悬移质含沙量测量　出处：《水利水电技术》2017年01期 　论文类型：期刊论文

【摘要】：通过简要介绍利用声学多普勒水流剖面仪(ADCP)回波强度估算悬移质含沙量的基本原理,结合梧州水文站的应用实例,利用ADCP的回波强度数据和现场采集的水样含沙量建立相关关系,根据相关关系由回波强度反演估算的水体悬移质含沙量验证了利用ADCP的回波强度估算悬移质含沙量的可行性。应用于梧州水文站的实践表明,左河道推算的系统误差为-0.1%,右河道推算的系统误差为1.5%。这种方法具有不扰动流场、测量剖面同步性较好、数据空间分辨率较高的优点,与传统的取样过滤称量法相比,计算效率显著提高。
[Abstract]:This paper briefly introduces the basic principle of estimating suspended sediment content by using acoustic Doppler flow profiler (ADCP) echo intensity, and combines with the application example of Wuzhou hydrologic station. The correlation between the echo intensity data of ADCP and the sediment content of water samples collected in the field is established. According to the correlation relation, the sediment content of suspended sediment estimated by echo intensity inversion is proved to be feasible by using ADCP echo intensity to estimate suspended sediment content. The practice of Wuzhou hydrologic station shows that the sediment content of suspended sediment is estimated by echo intensity inversion. The systematic error of the left channel is -0.1 and that of the right channel is 1.5. This method has the advantages of not disturbing the flow field, good synchronicity of the measurement section and high spatial resolution of the data, compared with the traditional sampling filtering weighing method. The efficiency of calculation is improved remarkably.
【作者单位】：梧州市水文水资源局;中国地质科学院岩溶地质研究所国土资源部/广西壮族自治区岩溶动力学重点实验室;
【基金】：国家自然科学基金(41402324,41402238) 地质调查项目(121201237000160002,121201107000150003) 广西自然科学基金(2014GX NSFBA118228)
【分类号】：TV143

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