平衡冰塞厚度与水流条件和冰流量关系的试验研究

平衡冰塞出现时河道冰塞的厚度最大,它是冰塞发展过程中的一个重要阶段,又是开河冰塞的前期基础,对于凌洪灾害、冬季河床演变具有重要的影响。本文通过水槽试验,对平衡冰塞的形成与变化机理进行了试验研究,揭示了平衡冰塞厚度与冰流量及水流条件等因素间的相互关系,依据试验资料定性得出了平衡冰塞厚度计算的表达式,并分析了影响平衡时间的一些因素。

A study on the relations about balance ice jam thickness with its flow conditions and ice discharge

As equilibrium ice jam appears,its thickness is the largest and this is an important stage in ice jam development, my research is based on this point which has important effects on the floods and bed evolution in winter. Flume experiments on the formation of balance ice jam and its varying mechanisms were carried out, bringing to light the relations between factors of balance ice jam thickness on the one hand and the flow conditions and ice discharge on the other. Based on experimental data, the formula of calculating thickness has been obtained and some factors influencing balance time have been analyzed.