植物“柔性坝”在不同底坡下水流特性的试验研究  

Hydrodynamic Characteristics Experiment of Vegetation "Flexible Dam" Based on Different Base Slopes

作　　者：刘锋[1] 邱秀云[1] 周著[1] 阎洁[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2005年第3期53-57,共5页Journal of Xinjiang Agricultural University

基　　金：国家自然科学基金项目(50269003);新疆水利水电工程重点学科基金项目资助

摘　　要：通过室内水槽模型试验,较系统地分析了植物“柔性坝”在交错布置方式下,3种不同底坡对水流的影响。由试验得出,植树后底坡越大,流量对植物坝的壅水影响越不明显,即底坡对植物坝壅水的影响要比流量的影响大。同时通过对相同底坡不同流量下植树前后断面平均流速的分析,说明了植物坝能较好的减小坝前和坝内的水流平均流速,并将流速峰值均匀化。最后从理论上分析了植树前后糙率的变化。By the indoor flume model experiment, this paper analyzed systematically the influence of three different base slopes of vegetation “flexible dam” on the water flow under the cross layout. The experiment showed that the bigger the base slopes after planting trees are,the more obviously the backwater of vegetation dam the discharge influences. Namely, the base slopes produce greater influence on backwater of vegetation dam than discharge does. The analysis of planting trees to the different discharge in same base slopes at the same time mean velocity in section before and after explained vegetation dam can let up average current velocity in front and inside of dam, and turn the current velocity peak value even. Finally, the variety of the roughness before and after planting trees were theoretically analyzed.

关 键 词：植物“柔性坝” 底坡 断面平均流速 

分 类 号：TV133[水利工程—水力学及河流动力学]