声层析技术在感潮河段流量测验的应用研究  

Application of Acoustic Tomography Technology in Discharge Measurement in Tidal Reach

作　　者：冼永成 XIAN Yongcheng(Zhaoqing Hydrological Branch of Guangdong Provincial Hydrological Bureau,Zhaoqing 526060,China)

机构地区：[1]广东省水文局肇庆水文分局,广东肇庆526060

出　　处：《广东水利水电》2024年第12期35-42,共8页Guangdong Water Resources and Hydropower

摘　　要：为探索声层析技术在西江下游感潮河段流量测验应用的可行性,2022年7月高要水文站引入河流声层析测流系统(RATS)进行实验研究。该文通过分析2023年5月29日至12月15日仪器与常规测流方法的比测成果,建立V_(RATS)与断面平均流速V_(m)线性回归模型;并利用模型推流结果与测站两套H-ADCP推求流量进行精度对比以及与上下游测站水量平衡分析。结果表明:声层析与断面平均流速代—断流速关系可通过3种检验,各项精度指标均达到合理要求,声层析与H-ADCP推求日流量的相对偏差基本维持在±10%之内;在转换潮期,声层析测流系统与H-ADCP相比有更好的准确度和稳定性;上下游水量平衡基本合理。综合分析认为,声层析技术在感潮河段的流量测验应用中能提高复杂河流的流量测验精度,测验数据平稳可信,具备推广应用的技术条件。In order to explore the feasibility of acoustic tomography technology in the discharge mesurement application of tidal reaches in the downstream of Xijiang River,the River Acoustic Tomography System(RATS)was introduced to Gaoyao gauging station in July 2022 for experimental study.By analyzing the results of the instrument and conventional discharge measurement methods from May 29 to December 15 in 2023,the linear regression model of V_(RATS)and the mean sectional velocity V_(m)was established.The model discharge results were compared with the discharge calculated by two sets of H-ADCP at the station,and the water balance between the upstream and downstream stations was analyzed.The results showed that the relationship between acoustic tomography and the mean sectional velocity could pass three tests,and all the accuracy indexes reached reasonable requirements.The relative deviation of the daily discharge calculated by acoustic tomography and H-ADCP was basically maintained within±10%.In the duration of tial current,the acoustic tomography system had better accuracy and stability than H-ADCP.The water balance between the upstream and downstream stations was basically reasonable.The comprehensive analysis showed that the application of acoustic tomography technology in the discharge mesurement of tidal reaches could improve the discharge mesurement accuracy in complex rivers,and the test data were stable and reliable,which had the technical conditions for popularization and application.

关 键 词：声层析 感潮河段 流量测验 西江 

分 类 号：P332.4[天文地球—水文科学]