摘要
大断面测量、水尺测量是水文测量中的常规测量方法,每年汛前汛后都要至少测量两次,测量的数据直接关系着一年水文资料的质量,过去在水文测量中经常使用的仪器是水准仪,随着技术的不断发展,国产全站仪逐步替代水准仪在水文测站水尺零点高程和大断面高程的测量应用。为了有效的分析国产全站仪在水文测验中的应用,不断总结其具体运用方法,以提高对于国产全站仪的应用效率。通过对国产全站仪高程和距离测量精度与实际应用等方面进行分析研究,根据三角高程测量原理和方法,应用误差传播定律,参照规范对其精度进行分析,得出国产全站仪可以替代水文三、四等水准测量和大断面测量,具有高效性和准确性。尤其适合高差较大、转点多的区域代表水文站和专用水文站测量及校测。
Big cross section measurement, draft survey is the conventional measuring methods in hydrographic survey, after concerned flood are measuring at least twice a year, a year has a close relationship with the measured data of the quality of the hydrological data, the past is often used in hydrological measurement instrument is level, with the continuous development of technology, domestic total station gradually replace level in hydrological station draft zero height and large cross section height measurement applications. In order to effectively analyze the application of domestic total station in hydrology test, the specific application methods are constantly summarized, so as to improve the application efficiency of domestic total station. Through studying the domestic total station height and distance measurement precision and analyzes the practical application, according to the principle of triangular elevation surveying and method of application of law of error propagation, analyzes its precision reference specification, it is concluded that domestic total station could replace hydrological level three, four etc. And the big cross section measurement, with high efficiency and accuracy. It is especially suitable for measurement and calibration of hydrographic stations and special hydrographic stations in regions with large height difference and many turning points.
作者
李祥坤
Li Xiangkun(Qinghai Hydrology and Water Resources Measuring and Reporting Center,Xining 810001,China)
出处
《电子测量技术》
2020年第16期72-75,共4页
Electronic Measurement Technology
关键词
国产全站仪
水尺零点高程
大断面测距
中误差
精度
domestic total station
zero point elevation of water scale
large section ranging
the error
precision
