黔张常铁路岩溶洼地桥址洪水位的分析研究

Analysis and Research on Flood Level of Bridge Site of Chongqing-Zhangjiajie-Changde Railway in Karst Low-lying Land

以黔张常铁路途经的水沙坪洼地为例,归纳了岩溶洼地洪水位计算原理,详细介绍较大流域面积洼地区域内的桥址洪水位的计算过程,简述较小流域面积洼地洪水位的简化计算方法。计算结果表明:计算水位与实际调查水位相吻合,该方法适用于岩溶洼地桥址洪水位的分析研究。

The research object in this paper was the Shuishaping tow-lying land where the Chongqing- Zhangjiajie-Changde Railway passes through. This paper summarized the calculation principle of flood level of karst low-lying land, expounded the calculation process of flood level of bridge site in large river basin low-lying land, and introduced the simplified calculation method of flood level of bridge site in small river basin low-lying land. The calculation results show that the water level calculated and the one obtained from field investigation can well accord with each other, and so the above-mentioned method can be suitable for the analysis and research of flood level of bridge site in karst low-lying land.