CAJ | 학술논문

针对黄河内蒙古段河水高含沙问题，通过改变多级斜板水沙分离装置中的斜板间距，探讨了不同流量、不同浓度浑水下斜板间距对泥沙分离率的影响。结果表明：第一级和第二级分沙装置中斜板间距越小，水沙分离效果越好；第三级分离装置的斜板间距减小到2 mm时，其对提高水沙分离率的影响不明显，而且会导致泥沙淤积，不利于排沙。同时分析了不同流量下斜板间距对排沙孔分离出的泥沙中值粒径的影响，结果表明：在同一流量下，排沙孔泥沙颗粒粒径随斜板间距的增大而增大。
침대황하내몽고단하수고함사문제，통과개변다급사판수사분리장치중적사판간거，탐토료불동류량、불동농도혼수하사판간거대니사분리솔적영향。결과표명：제일급화제이급분사장치중사판간거월소，수사분리효과월호；제삼급분리장치적사판간거감소도2 mm시，기대제고수사분리솔적영향불명현，이차회도치니사어적，불리우배사。동시분석료불동류량하사판간거대배사공분리출적니사중치립경적영향，결과표명：재동일류량하，배사공니사과립립경수사판간거적증대이증대。
For the hyper-concentration flow of the Yellow River in Inner Mongolia,the paper discussed the effect of inclined plate spacing’ s on sediment separation rate in different discharge and concentration by changing the inclined plate spacing’s of multilevel water-sediment separation device. The results show that the smaller the inclined plate spacing is,the better the effect of the water-sediment separation is, in the first and second level water-sediment separator;when the inclined plate spacing of the third separator reduced to 2mm,the effect is not obvious and it is easy to cause sediment deposition disadvantage of desilting. Besides,the paper analyzed the effect of inclined plate spacing’s on sediment median sizes of sediment flushing outlet in different discharge. The results show that the sediment sizes of sediment flushing outlet is increased with the increase of the inclined plate spacing under the same discharge condition.