| 刘纪根,雷廷武,蔡强国.施加聚丙烯酰胺后坡长对侵蚀产沙过程的影响[J].水利学报,2004,35(1):0057-0061 |
| 施加聚丙烯酰胺后坡长对侵蚀产沙过程的影响 |
| Experimental study on impacts of slope length treated with polyacrymide on sediment yield |
| |
| DOI： |
| 中文关键词: 坡长 侵蚀产沙 当量坡长 聚丙烯酰胺 |
| 英文关键词: slope length sediment yield equivalent slope length polyacrymide |
| 基金项目: |
|
| 摘要点击次数: 2518 |
| 全文下载次数: 162 |
| 中文摘要: |
| 坡长是影响坡面径流和水流侵蚀产沙的重要地貌因素之一。本研究通过一系列人工模拟降雨，研究了在不同条件下坡长对侵蚀产沙过程的影响。试验中测取了3种雨强（50mm/h、100mm/h、150mm/h）、4种坡度（5°、10°、20°、25°）、4种当量坡长（8m、16m、24m、40m）和5种地表处理（对照、麦草覆盖和3种聚丙烯酰胺覆盖度）的产流和产沙量。试验结果表明，不同的雨强、地表处理和坡度下，坡长对侵蚀产沙过程的影响也不同。 |
| 英文摘要: |
| Slope length is one of the important geomorphologic factors affecting the surface runoff and sediment yield.The impacts of slope length on sediment yield under different conditions are experimentally studied by means of artificial rainfall simulation.The runoff and sediment concentration for 3 rain intensities, 4 slope gradients, 5 kinds of surface treatment and 3 levels of PAM coverage are to be measured.It is found that the impacts of slope length on sediment yield are related to rainfall intensity, surface treatment, slope gradient and PAM coverage level. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |