不同排放深度下温升作用对核电厂液态流出物近区稀释的影响研究  

Study on the influence of thermal discharge on near field dilution of liquid effluent from inland NPPs

作　　者：刘永叶[1] 杨阳[1] 乔亚华[1] 陈鲁[1] 

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《辐射防护》2017年第5期355-360,共6页Radiation Protection

基　　金：国家科技重大专项"CAP1400安全审评关键技术研究"(2013ZX06002001)

摘　　要：针对国内某典型内陆核电厂,基于一种三维水动力混合区模型及决策支持系统CORMIX(即康奈尔混合区专家系统),对核电厂液态流出物水底、水中淹没式排放及高于水面排放等排放情景共4种排放深度下,温排水温升作用对核电厂排出的液态流出物的近区稀释扩散能力的影响分别进行数值模拟。计算结果表明:温升对核电厂液态流出物近区稀释效果的影响规律主要依赖于流出物的排放深度;水底淹没式排放或水体中下层排放时,温升作用有利于液态流出物的近区稀释,水体中上层排放和高于水面排放时,温升作用对流出物近区稀释扩散能力产生明显的不利影响。The numerical simulation of influence of thermal discharge on near field dilution of liquid effluent at a typical inland nuclear power plant in China under three discharge scenarios（ bottom,in water and above water） at four depths were carried out using a three-dimensional hydrodynamic mixing zone model and the decision support system CORMIX（ Cornell Mixing Zone Expert System）. The results showed that the influence of temperature on the near field dilution of liquid effluent would depend on the depth of the drain. The temperature had favorable effect on the near field relative dilution of liquid effluent under the near-bottom or lower-middle layer submerged discharge mode,whereas it would have a significant adverse impact under the upper-middle layer submerged or above the water surface discharge mode.

关 键 词：内陆核电厂 温排水 液态流出物 近区 影响 

分 类 号：X771[环境科学与工程—环境工程]