| 砂基堤防管涌模型试验和产生机理分析 |
| |
| 引用本文： | 郭书亮,李娜,张家泽,张玲刚.砂基堤防管涌模型试验和产生机理分析[J].河北水利水电技术,2011(6):36-38. |
| |
| 作者姓名： | 郭书亮 李娜 张家泽 张玲刚 |
| |
| 作者单位： | [1]河北工程大学,河北邯郸056021 [2]河北省水利水电勘测设计研究院,天津300250 [3]中国水电建设集团第十五工程局,西安710003 |
| |
| 摘 要： | 针对典型的堤基进行了管涌机理的砂槽模型试验研究,观察并分析了管涌发生、发展并导致溃堤的机理和过程。试验结果表明,堤基管涌发展的机理、通道形状和位置均相似,管涌破坏均发生在透水层的顶面,低于临界水头时,管涌仅在一定范围内发展并最终停止,管涌通道不会与江（河）水连通,一旦超过临界水头,管涌通道持续发展并最终与江（河）水连通,连通管流的强力冲刷最终导致堤基整体破坏和溃堤。
|
| 关 键 词： | 堤基 管涌 模型试验 机理 临界比降 |
Model Test of Piping in Sand Foundation Dike and Mechanism Research |
| |
| GUO Shu-liang,LI Na,ZHANG Jia-ze,ZHANG Ling-gang.Model Test of Piping in Sand Foundation Dike and Mechanism Research[J].Hebei Water Resources and Hydropower Engineering,2011(6):36-38. |
| |
| Authors: | GUO Shu-liang LI Na ZHANG Jia-ze ZHANG Ling-gang |
| |
| Affiliation: | 1.Hebei University of Engineering,Handan 056021,China;2.Hebei Research Institute of Investigation ＆ Design of Water Conservancy ＆ Hydropower,Tianjin 300250,China;3.Sinohydro Corporation Engineering Bureau 15 Co.,Ltd, Xi＇an 710003,China) |
| |
| Abstract: | Flume model tests were conducted to simulate piping processes in dike foundations.The whole development processes from piping incipit to dike failure are observed and their mechanisms are analysed.The observed phenomenons are similar in piping mechanisms,the shape of piping channel and piping positions.Piping occurred at the top of permeabile layer and propagate horizontally towards riverside,piping extends only to a limited area and will stop.When hydraulic head is lower than the critical value,under this case,dike failures will not happen,otherwise,if hydraulic head exceeds the critical value,piping will propagate persistently towards riverside and finally cause dike failure. |
| |
| Keywords: | dike foundation piping model test mechanism critical gradient |
| 本文献已被 维普 等数据库收录！ |
|
