温度分层水库中泥沙间层流形成条件研究  

Study on formation conditions of sediment interflow in thermal stratified reservoir

作　　者：任实[1] 刘亮[1] REN Shi;LIU Liang(China Three Gorges Corporation, Yichang, China, 443133)

机构地区：[1]中国长江三峡集团公司,湖北宜昌443133

出　　处：《水动力学研究与进展（A辑）》2018年第3期370-375,共6页Chinese Journal of Hydrodynamics

基　　金：国家重点研发计划(2016YFC0402309;2016YFC0402306)~~

摘　　要：水库的垂向温度分层会影响入流水体在水库内的运动形态,挟沙水流进入温度分层水库后,在一定条件下能够沿水平方向侵入环境水体中形成泥沙间层流运动。该文通过水槽试验模拟了泥沙间层流运动,探讨了水库泥沙间层流的形成条件。研究表明,含沙量较少且所含泥沙颗粒的粒径较小时,挟沙水流才能在温度分层水库中形成泥沙间层流。The movement of inflow in thermal stratified reservoir is influenced by the vertical temperature stratification.When the sediment laden flow enters the thermal stratified reservoir,it can intruded into stratified water and moved forward horizontally as an interflow in certain conditions.In this paper,the behavior of sediment interflow in thermal stratified water body is investigated by flume experiments,and formation conditions of sediment interflow in reservoirs are studied.The results show that the sediment interflow could form in the stratified reservoir when sediment concentration is little and the sediment particle is fine.

关 键 词：温度分层水库 密度流 挟沙水流 泥沙间层流 

分 类 号：TV143[水利工程—水力学及河流动力学]