【摘要】 当遭遇大洪水时,往往会出现水情水势复杂,水面漂浮物多等情况,此时可采用多种方法测流,其中全站仪水面浮标法测流仍然是一种常见的应急流量测验方法。全站仪浮标法测流操作方便,安全快捷、不受测点地形条件限制,虽然精度较低,但常用。同步流速仪法断面流量与浮标虚流量的相关关系精度直接影响浮标流量的精度,为提高浮标关系线精度,选取北碚水文站2015年～2018年同步流速仪法断面平均流速、中泓浮标法流速资料,从全站仪预判浮标路径监测角度的新方法、浮标流速突变点分析、多种方案拟合精度检验及方案优选方面分析,并通过北碚水文站2020年的中泓法浮标流量进行误差验证,结果表明全站仪预判浮标路径监测角度方法实用,优选的拟合关系线精度有所提高。更多还原

【Abstract】 When encountering a major flood,there will often be situations such as complex water regime and water potential,and many floating objects on the water surface. At this time,many methods can be used to measure the flow. Among them,the total station surface buoy method is still a common emergency flow measurement method. The total station buoy method is easy to operate,safe and fast,and is not restricted by the terrain conditions of the measuring point. Although the accuracy is low,it is commonly used. The accuracy of the correlation between the synchronous flow meter method section flow and the buoy virtual flow rate directly affects the accuracy of the buoy flow rate. In order to improve the accuracy of the buoy relationship line,the average flow velocity of the synchronous flow meter method section and the flow velocity of the Zhonghong buoy method at Beibei Hydrological Station from 2015 to 2018 are selected Data,from the perspective of a new method for predicting buoy path monitoring from the total station,analysis of buoy flow rate mutation points,multiple plan fitting accuracy inspections and plan optimization analysis,and the error is carried out by the Zhonghong method buoy flow rate of Beibei Hydrological Station in 2020 The verification results show that the method of predicting the monitoring angle of the buoy path by the total station is practical,and the accuracy of the optimal fitting relationship line is improved.更多还原