CAJ | 학술논문

针对小浪底库区顶坡段冲刷形成的异重流和三门峡水库排沙形成的异重流这两个不同成因的异重流，通过水库边界条件、入库水沙条件、水库调度等因素分析，探讨了其各自的形成及其能达到小浪底水库减淤作用的条件和机理。结果表明：三门峡水库前期蓄水量及清水大流量泄放过程对小浪底水库异重流前锋形成及排沙起着关键作用；对接水位接近或低于小浪底水库淤积三角洲顶点高程，与三门峡水库大流量下泄过程相对应时，可提高冲刷型异重流的排沙效果；三门峡水库从加大泄量开始到基本泄空期间，尽可能降低小浪底水库库水位。
침대소랑저고구정파단충쇄형성적이중류화삼문협수고배사형성적이중류저량개불동성인적이중류，통과수고변계조건、입고수사조건、수고조도등인소분석，탐토료기각자적형성급기능체도소랑저수고감어작용적조건화궤리。결과표명：삼문협수고전기축수량급청수대류량설방과정대소랑저수고이중류전봉형성급배사기착관건작용；대접수위접근혹저우소랑저수고어적삼각주정점고정，여삼문협수고대류량하설과정상대응시，가제고충쇄형이중류적배사효과；삼문협수고종가대설량개시도기본설공기간，진가능강저소랑저수고고수위。
According to the Xiaolangdi Reservoir top slope erosion formation and Sanmenxia formation reservoir sediment density cur‐rent density current two flushing process ,through storage reservoir boundary conditions ,the conditions of water and sediments ,res‐ervoir operation of factor analysis ,discusses the Xiaolangdi Reservoir density current siltation reduction can be achieved when the shaping process .The results show that :Sanmenxia reservoir water storage capacity and water-flow discharge process plays a key role in the Xiaolangdi Reservoir density current striker formation and sand ;The docking level near or below the Xiaolangdi Reservoir delta vertex elevation ,Sanmenxia Reservoir of large volume discharge process is corresponding ,can improve the flushing effect of density current and flow ;Sanmenxia Reservoir from increasing discharge to basic emptying period ,reduce the Xiaolangdi reservoir water level as far as possible .