水文测站基本水准点校测及引测问题分析

Textual Criticism and Measuring of Basic Benchmarks at Hydrometric Station

对水文测站引据水准点变更情况下基本水准点校测及引据水准点较远时基本水准点引测的相关问题进行了分析。提出由于基本水准点具有冻结的"不变性",用不同的引据水准点校测基本水准点,基本水准点冻结高程应保持不变;用引据水准点新设基本水准点时,当引据水准点距离较远时,测验高差应进行平差处理。

By analyzing measuring of basic benchmarks in the case of the benchmarks which elevation is measured has changed or further away from basic benchmarks at hydrometric station,this paper put forword the idea that basic benchmarks has stationary elevation, elevation of basic benchmarks remain constant when measured with different benchmarks which elevation is measured;when the benchmarks which elevation is measured is far away from the new basic benchmarks,the first elevation used by the new basic benchmarks should be adjusted.