摘要
本文根据滩性分析，提出了疏炸与治导相结合的整治原则，在分析西津水位调节对滩河段影响的基础上，对设计方案在水位、流态、输沙等方面进行了全面试验。并根据试验中反映出的问题，对整治线宽度、炸礁范围等方面提出修改方案，试验表明：修改方案Ⅱ实施后，滩位比降增大，航槽输沙能力明显增强，水流平顺，沿程横流亦在允许范围内，工程效果明显。为了进一步论证工程方案的泥沙输移的效果，还进行了整治前后定床输沙对比试验。试验表明修改方案Ⅱ是可行的。
This paper presents the Bantan's regulation principle which is composed of loosenbombing and regulation by means of the shoal property analysis. These aspects including water level,flow pattern,sediment transport for design scheme were tested based on analyzing the effect of Xijing water level adjustment on the Bantan reach. In order to solve the problems existing in the design scheme,it is presented that the revised scheme about the regulation width and the range of bombing reef. The experiment shows that the slope of water surface increases in the shoal reach,the sediment transport capacity of the navigation channel grows, current flows smoothly and the transverse velocity is in allowable range and the effect of the project is obvious. In order to prove the effects of the sediment transport of the project scheme,comparative experiments of fixed bed sediment transport before and after regulation were made. The test results show that the revised shceme Ⅱ is feasible.
