潘 杰，李書建，胡尊樂，汪 姍，胡斯瑋，朱文杰，華 晨

(江蘇省水文水資源勘測局常州分局，江蘇 常州213000)

　　摘 要：橫向聲學多普勒剖面流速儀(H-ADCP)因其測驗的自動高效和信息傳輸的快捷在流量測驗中得到廣泛應用。針對現狀代表流速選取存在水文物理含義不明的缺點，根據垂線流速分布理論模型，結合實測垂線流速資料，提出平原區不同類型河道指數、一元多項式流速分布模型，并實際應用于百瀆口站H-ADCP測驗系統的單斷關系率定。應用結果表明：基于指數流速的分布模型能夠用于H-ADCP層流速到垂線流速的轉化，率定的單斷關系精度可靠，為H-ADCP測流系統流速率定單斷關系提供新的方法。

　　關鍵詞：流速分布;規律;流速轉化;H-ADCP;流量測驗;單斷關系;擬合;平原區河道

　　Application of laws of velocity distribution in transverse acoustic Doppler flow measurement system

　　PAN Jie, LI Shujian, HU Zunle, WANG Shan, HU Siwei，ZHU Wenjie, HUA Chen

　　(Changzhou Hydrology and Water Resources Exploratory Survey Office, Changzhou 213000, China)

　　Abstract: Horizontal-Acoustic Doppler Current Profiler (H-ADCP) is widely used in flow measurement because of its automatic efficient measurement and fast information transmission. With regard to disadvantages of unclear hydrological and physical meanings of current representative velocity selection, a fitting model of flow velocity distribution in different types of rivers in plain area is proposed and applied , based on the theoretical model of vertical velocity distribution and the measured data of vertical velocity. The model is used in relationship calibration between point velocity and cross-section velocity of H-ADCP measuring system in Baidukou Station. Application results show that velocity distribution model, based on power exponential function and univariate polynomial function, can be applied to the conversion of H-ADCP laminar velocity to vertical velocity, and the accuracy of the single-break relationship is reliable, which can provide a new method for determining the point velocity and cross-section velocity relationship of H-ADCP flow measurement system.

　　Key words: velocity distribution, law, velocity conversion, Horizontal-Acoustic Doppler Current Profiler (H-ADCP) , discharge measurement, relationship between point velocity and cross-section velocity, fitting, riverway in plain area.