利用埋管水压渗透恢复水库滩库容试验研究  

Experimental study on beach storage recovery of reservoir based on pressured seepage of buried-pipe

作　　者：唐小娅[1] 童思陈[1] 杨明哲[1] 

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《人民长江》2016年第17期84-87,113,共5页Yangtze River

基　　金：国家科技支撑计划资助项目(2012BAB05B03);重庆市基础与前沿研究计划项目(CSTC2015JCYJA90013)

摘　　要：水库滩库容损失后极难恢复,探寻有效的滩库容恢复途径十分必要。基于概化水库的滩库容恢复实验,采用埋管水压渗透方法,在水下淤积物底层预埋槽孔管,促使泥沙加压液化,最终在管道上方形成顺管道线的三角形输沙横断面。试验结果表明,压力水流进入上下开孔的槽孔管后,边滩泥沙整体向上起动,而后向主槽移动,清淤效果较为明显;压力水流进入左右开孔的槽孔管后,靠近主槽的边坡泥沙最先落回,而后边坡逐渐崩坍并向高滩蔓延,输沙断面慢慢扩大,从而达到滩库容恢复的目的。It is extremely difficult to recover reservoir beach storage once its capacity lost,so to explore an effective method to restore the reservoir beach storage is necessary. In the test on beach storage recovery of a generalized reservoir,we used the seepage pressure method of embedded pipe,i.e,embedding seepage pressure pipe under silting layer to liquefy sediment and forming pipe-wise triangle sediment transportation cross-section above the pipe. The results showed that when pressurized water flowed in the pipe with openings of above-bottom surface,the beach sediment started to move upward and then to the main channel,and the dredging effect was relatively obvious; when pressurized water flowed in the pipe with openings of left-right surface,the sediment on beach slope close to the main channel fell back to the main channel first,and then the slope gradually collapsed to beach and sediment transportation cross-section expanded gradually,and the goal of storage recovery was reached.

关 键 词：埋管 水压渗透 加压液化 水槽试验 库容恢复 

分 类 号：TV697[水利工程—水利水电工程]