水道观测水位节点布设及水位推算方法探讨

Arrangement of Water Level Node and Calculation Method of Water Level in the Waterway Survey

水道水位受沿程边界状况及水流条件影响,起伏不定变化复杂,而水下测点高程主要通过测时水位减去测点水深间接获得。通过对水面线推算原理、试验河段沿程水位观测及影响因素分析,提出了水位节点的概念和确定水位节点的方法,并与历史资料对比,具有较强的针对性和实用性,弥补了现有标准规范对水位观测及推算要求的不足。

The water level is influenced by the process boundary condition and the water flow condition,it becomes choppy and complex. The elevation of the river bottom is measured indirectly by the water level minus the water depth of the measuring point. The article bases on the principle of the water surface line calculation and water level observation along the river in the experimental reach and analysis of influencing factors. This paper puts forward the concept of water level node and the method of determining the water level node and compares with historical data,it has strong pertinence and practicability and makes up for the shortcomings of the existing standard specification for water level observation and calculation requirements.