植物“柔性坝”拦沙机理的试验研究  

Experimental study on mechanism of blocking sand by vegetation flexible dams

作　　者：刘锋[1] 阎洁[1] 邱秀云[1] 周著[1] 侯杰[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《泥沙研究》2006年第6期55-59,共5页Journal of Sediment Research

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,研究了植物“柔性坝”在浑水水流流态下的拦沙机理。试验是在1/150、1/100和1/50三种不同底坡条件下均对应5.09L/s、9.08L/s和13.08L/s三种流量时进行观测的。对植树坝前后单颗粒泥沙运动速度的变化进行了观察,并对植物坝前与坝内的泥沙淤积形态进行了分析。由试验得出,底坡越大,植物坝上游泥沙运动速度的衰减率就越小,泥沙越早达到输沙平衡,植物坝的拦沙效果也越差。By the flume model experiment, this paper analyzed the mechanism of blocking sand by the vegetation flexible dam. The experiment was done under three slopes 1/150, 1/100 and 1/50 and three discharges 5.09L/s, 9.08L/s and 13.08L/s. The velocity of single sand and the longitudinal profile of sedimentation before and after the vegetation dam were measured and analyzed. The experimental results showed that the bigger the slope, the smaller the damp of sediment velocity upstream the plant dam, and the lower the sand blocking efficiency by the plant dam.

关 键 词：植物“柔性坝” 浑水试验 拦沙机理 

分 类 号：TV64[水利工程—水利水电工程]