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砒砂岩地区沟道植物"柔性坝"拦沙试验
引用本文:毕慈芬,王富贵,李桂芬,拾兵,乔旺林,李贵. 砒砂岩地区沟道植物"柔性坝"拦沙试验[J]. 泥沙研究, 2003, 0(2): 14-25
作者姓名:毕慈芬  王富贵  李桂芬  拾兵  乔旺林  李贵
作者单位:1. 黄委会黄河上中游管理局,陕西,西安,710043
2. 中国水利水电科学研究院,北京,100044
3. 内蒙古鄂尔多斯市水科所,内蒙古,东胜,017000
摘    要:通过对原型和室内模型试验资料的分析,证明了在黄土高原砒砂岩地区的支毛沟中,垂直于水流方向种植沙棘灌木植物作为拦沙的坝型框架材料是可行的,其机理在于利用植物干、枝、叶的分流、阻滞性能,分散了沟通集中的股流,降低了水流对沟床的剪切应力,拦截了洪水挟带的大量粗沙,形成了植物“柔性坝”,同时又根据原型和室内试验资料得出的物理图形,初步建立了植物拦沙的理论架构。

关 键 词:黄土高原 沙棘植物 水沙运动 水流方向 剪切应力 沟床 黄河 拦沙试验 泥沙淤积
文章编号:0468-155X(2003)02-0014-12
修稿时间:2002-03-13

Experiment on Sediment Retention by Plant "Flexible Dam" in Gully in Soft Rock Region
BI Ci|fen ,WANG Fu|gui ,LI Gui|fen ,SHI Bing ,QIAO Wang|lin ,LI Gui. Experiment on Sediment Retention by Plant "Flexible Dam" in Gully in Soft Rock Region[J]. Journal of Sediment Research, 2003, 0(2): 14-25
Authors:BI Ci|fen   WANG Fu|gui   LI Gui|fen   SHI Bing   QIAO Wang|lin   LI Gui
Affiliation:BI Ci|fen 1,WANG Fu|gui 1,LI Gui|fen 2,SHI Bing 2,QIAO Wang|lin 3,LI Gui 3
Abstract:The paper proved that seabuckthorn|planting across the flowing direction as a kind of frame material for sediment retention dam was feasible in branch gully in soft rock region on loess plateau through analyzing the experimental data from field and indoor model.The mechanism is that plant stick,branch and leaves can scatter strand flow so as to reduce the stress of flow to gully bed and retained a lot of coarse sediment.Meanwhile,the paper established a theoretical frame of sediment retention by plant.
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