CAJ | 학술논문

在充分认识传统沉降筒缺陷的基础上提出了“大型可温控自动搅拌沉降试验筒”。通过室内系列试验发现：(1)含沙量对长江口细颗粒沉降速度影响最大；(2)温度上升，沉速增加，但不同阶段影响程度有所不同；(3)含沙量越高，盐度对沉速的影响越小，含沙量相同情况下，长江口北槽悬沙枯季水温下盐度对沉速的影响在1.8~5.7倍左右；洪季水温下盐度对沉速的影响在1.5~2.2倍左右。(4)枯季最佳絮凝盐度在7左右，最佳絮凝含沙量为7 kg/m3；洪季最佳絮凝盐度在10~12左右，最佳絮凝含沙量为4.5 kg/m3。本研究成果可望加深我们对细颗粒泥沙动力过程相关机理的认识，同时可为相关港口、航道的淤积机理分析，数学模型、物理模型研究工作提供一定技术参考。
재충분인식전통침강통결함적기출상제출료“대형가온공자동교반침강시험통”。통과실내계렬시험발현：(1)함사량대장강구세과립침강속도영향최대；(2)온도상승，침속증가，단불동계단영향정도유소불동；(3)함사량월고，염도대침속적영향월소，함사량상동정황하，장강구북조현사고계수온하염도대침속적영향재1.8~5.7배좌우；홍계수온하염도대침속적영향재1.5~2.2배좌우。(4)고계최가서응염도재7좌우，최가서응함사량위7 kg/m3；홍계최가서응염도재10~12좌우，최가서응함사량위4.5 kg/m3。본연구성과가망가심아문대세과립니사동력과정상관궤리적인식，동시가위상관항구、항도적어적궤리분석，수학모형、물리모형연구공작제공일정기술삼고。
For the coastal sedimentology, especially for those fine sediment estuaries, settling velocity is a critical parameter that is of significant importance for us to understand their behavior and dynamics. Based on the well known drawbacks and short comings of the traditional settling column, a new apparatus has been developed for measuring the settling velocity of fine suspended sediment in laboratory. In this study, we found that not only sus-pended sediment concentration but also salinity and temperature could significantly influence the settling velocity, and finally an empirical formula was proposed based on a series of experiments. This study may help improve our understanding on this topic and favor numerical modelling on fine sediment.