堆場疏浚泥顆粒分選特性初步量化方法
發(fā)布時(shí)間:2019-05-21 09:53
【摘要】:為了準(zhǔn)確評(píng)估堆場存儲(chǔ)能力和合理選擇疏浚泥處理工藝,以泥沙運(yùn)動(dòng)學(xué)為理論基礎(chǔ),將疏浚泥顆粒分為d0.005 mm、0.005 mm≤d≤0.01 mm和d0.01 mm 3個(gè)粒組,分析了各粒組相對(duì)含量的沿程變化規(guī)律,明確了堆場疏浚泥分選的主要原因是d0.01 mm粒組與0.005 mm≤d≤0.01 mm粒組的相對(duì)運(yùn)動(dòng);以分選系數(shù)量化堆場疏浚泥分選的顯著程度,以偏離系數(shù)量化原泥顆粒組成對(duì)堆場疏浚泥分選的影響,分析了分選系數(shù)、偏離系數(shù)分布與堆場疏浚泥土性分布的關(guān)系,提出了堆場疏浚泥分選特性的初步量化方法。研究結(jié)果表明:隨著離吹填口距離的增大,分選系數(shù)沿程減小,呈冪函數(shù)分布,堆場疏浚泥分選性沿程減弱,吹填口附近分選系數(shù)最大,顆粒分選顯著,粒度差異大,退水口附近分選系數(shù)趨近于零,分選不明顯,顆粒分布均勻;偏離系數(shù)沿程先減小后增大,呈勺形分布,反映堆場前、后段疏浚泥土性與原泥相差較大,而堆場中段疏浚泥土性與原泥接近;分選系數(shù)、偏離系數(shù)的沿程分布與堆場疏浚泥土性分區(qū)具有良好的相關(guān)性。
[Abstract]:In order to accurately evaluate the storage capacity of the yard and reasonably select the dredging mud treatment process, based on the theory of sediment kinematics, the dredged mud particles are divided into three groups: d0.005 mm,0.005 mm 鈮,
本文編號(hào):2482009
[Abstract]:In order to accurately evaluate the storage capacity of the yard and reasonably select the dredging mud treatment process, based on the theory of sediment kinematics, the dredged mud particles are divided into three groups: d0.005 mm,0.005 mm 鈮,
本文編號(hào):2482009
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