穿黄工程河段冲刷问题研究综述

Summarization of researches on erosion problemin reach for Yellow-River-crossing works of Middle Lineof Water Transfer Project from South to North China

通过对比分析穿黄河段历史冲淤演变、小浪底运用后的冲刷分析、不同比尺及工况泥沙模型试验和二维数学模型计算,有关公式的计算成果,对孤柏嘴隧洞断面河段的冲刷深度进行了综合分析,提出了相应的冲刷深度、一般冲刷的最大水深及最低深泓点高程。

By means of comparison and analysis on historicel data of evolution of sediment erosion?deposition in the reach for Yellow?River?crossing works, analysis of erosion after the Xiaolangdi Project being used,sodiment model test results with different scales and under different conditions, 2?D mathematic model and calculation by empirical formulae,the erosion depth at the eross?section of Gubozui is sythetically analyzed. Then the relevant erosion depth, the maximum water depth after erosion and the altitude of the lowest riverbed are also propsoed.