| 王军,章宝平,陈胖胖,刘涛.封冻期冰塞堆积演变的试验研究[J].水利学报,2016,47(5):693-699 |
| 封冻期冰塞堆积演变的试验研究 |
| Experimental study of ice jam accumulation during freezing period |
| 投稿时间：2015-10-09 |
| DOI：10.13243/j.cnki.slxb.20151048 |
| 中文关键词: 冰塞 堆积顺序 水力增厚 力学增厚 水槽试验 |
| 英文关键词: ice jam accumulation process hydraulic thickening mechanical thickening experimental study |
| 基金项目:国家自然科学基金项目(51379054) |
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| 摘要点击次数: 2282 |
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| 中文摘要: |
| 冬季北方河流中经常出现冰塞现象,极易诱发凌洪灾害。冰塞厚度是冰情预测工作的重要组成内容,不同冰塞演变过程中的冰厚研究成果尚不完善。借助水槽试验,通过改变水流与冰流量条件,对冰塞的堆积演变过程进行了试验研究。结果表明:冰塞堆积演变存在两种不同的顺序,不同的顺序对应不同的厚度变化过程,形成的冰塞分别是以水力增厚为主和以力学增厚为主。这一研究发现可为冰厚计算公式的选取提供有效的技术支撑 |
| 英文摘要: |
| Ice jam is a common problem for rivers in cold regions. The ice jam thickness is an important indicator for ice jam prediction. However,the mechanism of ice jam evolution in the freezing period is still not clear. By conducting a series of flume experiments, this phenomenon was studied. Different flow and ice conditions were selected to study the frazil ice jam accumulation. Two different accumulation processes were shown from the study, which corresponding to the two flow conditions. Hydraulic thickening and mechanically thickening process were discussed separately in the passage, which can support the further research on the ice jam evolution. |
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