高含水率疏浚泥堆场动态沉积计算模型
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摘要
基于高浊度水的动态沉积原理,堆场疏浚泥被划分为清水层、浑水层和底部淤积层,考虑吹填中疏浚泥泥量、水量的动平衡,建立堆场疏浚泥动态沉积计算模型,预测施工期泥面、浑液面及水位随时间的变化关系,确定所需的围埝高度、沉积区面积及存储容积。通过算例分析泥浆初始颗粒浓度、吹填流量与浑液面沉速对围埝高度、沉积区面积及存储容积的影响。结果表明:吹填流量、浑液面沉速对沉积区面积的影响较大,而泥浆初始颗粒浓度对沉积区面积的影响很小;围埝高度与吹填流量无关,而泥浆初始颗粒浓度、浑液面沉速对围埝高度的影响较大;吹填流量对沉积区存储容积的影响最大,浑液面沉速的影响次之,而泥浆初始颗粒浓度的影响最小。
Based on the theory of dynamic sedimentation,dredged slurries in the containment area are divided into supernatant layer,turbid layer and alluvium layer.A dynamic sedimentation model of dredged slurries is proposed,considering dynamic equilibriums of water mass and solid mass of the dredged slurry during hydraulic fill.The model can predict the variation on each layer surface versus time,moreover,it can determine the height of reclamation dam,the area of sedimentation zone and the initial storage capacity,the influence on which,caused by initial solid concentration of dredged slurry,filling rate and settling velocity of turbid layer surface,is analyzed by a case.The results show that settling velocity and filling rate have a great effect on the area of sedimentation zone,however,the influence of initial solid concentration is a little.The height of reclamation dam is not related to filling rate but affected greatly by settling velocity and initial solid concentration.Filling rate has a significant influence on the initial storage capacity,and the influence of settling velocity is the second,while the initial solid concentration has the least influence.
Based on the theory of dynamic sedimentation,dredged slurries in the containment area are divided into supernatant layer,turbid layer and alluvium layer.A dynamic sedimentation model of dredged slurries is proposed,considering dynamic equilibriums of water mass and solid mass of the dredged slurry during hydraulic fill.The model can predict the variation on each layer surface versus time,moreover,it can determine the height of reclamation dam,the area of sedimentation zone and the initial storage capacity,the influence on which,caused by initial solid concentration of dredged slurry,filling rate and settling velocity of turbid layer surface,is analyzed by a case.The results show that settling velocity and filling rate have a great effect on the area of sedimentation zone,however,the influence of initial solid concentration is a little.The height of reclamation dam is not related to filling rate but affected greatly by settling velocity and initial solid concentration.Filling rate has a significant influence on the initial storage capacity,and the influence of settling velocity is the second,while the initial solid concentration has the least influence.
引文
[1]徐桂中.疏浚泥堆场颗粒分选及对工程特性影响规律试验研究[D].南京:河海大学,2013:27-36.Xu G Zh.Grain sorting behavior of dredged slurries in reclaimed land and its effects on engineering properties[D].Nanjing:Hohai University,2013:27-36.(in Chinese)
[2]霍守亮,荆一凤,席北斗,等.环保疏浚堆场余水处理生产性试验研究[J].环境科学研究,2007,20(1):75-79.Huo Sh L,Jing Y F,Xi B D,et al.Full-scale experimental research on residual water treatment for environmental dredging[J].Research of Environmental Sciences,2007,20(1):75-79.(in Chinese)
[3]汪顺才,张春雷,黄英豪,等.堆场疏浚淤泥含水率分布规律调查研究[J].岩土力学,2010,31(9):2823-2828.Wang Sh C,Zhang Ch L,Huang Y H,et al.Study of diversification of water contents in dredged sediment storage yard[J].Rock and Soil Mechanics,2010,31(9):2823-2828.(in Chinese)
[4]吉锋.高含水率疏浚泥堆场存储能力试验研究与计算模型[D].南京:东南大学,2012:38-45.Ji F.Experimental study and modeling on capacity of dredged slurry ponds[D].Nanjing:Southeast University,2012:38-45.(in Chinese)
[5]Montgomery R L,Thachston E L,Parker F L.Dredged material sedimentation basin design[J].Journal of Environmental Engineering,1983,109(2):466-484.
[6]EM 1110-2-5027,Confined disposal of dredged material[S].Washington,D.C.:US Army Corps of Engineers,1987.
[7]傅文德.高浊度给水工程[M].北京:中国建筑工业出版社,1994:102-110.Fu W D.High turbidity supply water engineering[M].Beijing:China Architecture&Building Press,1994:102-110.(in Chinese)
[8]方晞,伏苓.高浊度水理论与技术[M].北京:化学工业出版社,2004:68-75.Fang X,Fu L.Theory and technology of high turbidity water[M].Beijing:Chemical Industry Press,2004:68-75.(in Chinese)
[9]李圭白.高浊度水的动水浓缩规律和自然沉淀池的计算方法[J].土木工程学报,1964(1):76-86.Li G B.Law of hydrothermal enrichment of high turbidity water and the calculation method of natural sedimentation tank[J].Journal of Civil Engineering,1964(1):76-86.(in Chinese)
[10]李圭白.对高浓度浑水静水沉淀浓缩若干理论问题的探讨[J].哈尔滨建筑工程学院学报,1981(2):1-9.Li G B.Discussion on some theoretical problems of sedimentation and concentration of high concentration muddy water[J].Journal of Harbin Institute of Civil Engineering,1981(2):1-9.(in Chinese)
[11]李圭白,阎立华.高浊度水沉淀池计算理论的实验验证[J].哈尔滨建筑工程学院学报,1985(1):53-62.Li G B,Yan L H.Experimental verification of calculation theory of high turbidity water sedimentation tank[J].Journal of Harbin Institute of Civil Engineering,1985(1):53-62.(in Chinese)
[12]费祥俊.泥沙的群体沉降——两种典型情况下非均匀沙沉速计算[J].泥沙研究,1992(3):11-19.Fei X J.Settling of particles in suspension—two typical cases in calculating the settling velocity of nonuniform sediment[J].Journal of Sediment Research,1992(3):11-19.(in Chinese)
[13]郑邦民,夏军强.固体颗粒的群体沉降速度分析[J].泥沙研究,2004(6):40-45.Zheng B M,Xia J Q.Analysis of group settlement velocity of solid particles[J].Journal of Sediment Research,2004(6):40-45.(in Chinese)
[14]Imai G.Settling behavior of clay materials[J].Soils and Foundations,1980,20(2):61-77.
[15]Tan T S,Yong K Y,Leong E C,et al.Behavior of clay slurry[J].Soils and Foundations,1990,30(4):105-118.
[16]Sridharan A,Prakash K.Settling behavior of fine grained soils[J].Indian Geotechnical Journal,1997,27(3):278-309.
[17]US Army Corps of Engineers.Technical report D-77-21:sizing of containment area for dredged material[R].Washington,D.C.:US Army Corps of Engineers,1977.
[18]钱宁.高含沙水流运动[M].北京:清华大学出版社,1989:202-216.Qian N.High sediment flow movement[M].Beijing:Tsinghua University Press,1989:202-216.(in Chinese)
[19]韩其为.水库淤积[M].北京:科学出版社,2003:259-276.Han Q W.Reservoir siltation[M].Beijing:Science Press,2003:259-276.(in Chinese)
[20]涂启华,扬赉斐.泥沙设计手册[M].北京:中国水利水电出版社,2006:345-350.Tu Q H,Yang P F.Sediment design manual[M].Beijing:China Water&Power Press,2006:345-350.(in Chinese)
[21]JTS 181-5-2012,疏浚与吹填工程设计规范[S].北京:人民交通出版社,2012.
[2]霍守亮,荆一凤,席北斗,等.环保疏浚堆场余水处理生产性试验研究[J].环境科学研究,2007,20(1):75-79.Huo Sh L,Jing Y F,Xi B D,et al.Full-scale experimental research on residual water treatment for environmental dredging[J].Research of Environmental Sciences,2007,20(1):75-79.(in Chinese)
[3]汪顺才,张春雷,黄英豪,等.堆场疏浚淤泥含水率分布规律调查研究[J].岩土力学,2010,31(9):2823-2828.Wang Sh C,Zhang Ch L,Huang Y H,et al.Study of diversification of water contents in dredged sediment storage yard[J].Rock and Soil Mechanics,2010,31(9):2823-2828.(in Chinese)
[4]吉锋.高含水率疏浚泥堆场存储能力试验研究与计算模型[D].南京:东南大学,2012:38-45.Ji F.Experimental study and modeling on capacity of dredged slurry ponds[D].Nanjing:Southeast University,2012:38-45.(in Chinese)
[5]Montgomery R L,Thachston E L,Parker F L.Dredged material sedimentation basin design[J].Journal of Environmental Engineering,1983,109(2):466-484.
[6]EM 1110-2-5027,Confined disposal of dredged material[S].Washington,D.C.:US Army Corps of Engineers,1987.
[7]傅文德.高浊度给水工程[M].北京:中国建筑工业出版社,1994:102-110.Fu W D.High turbidity supply water engineering[M].Beijing:China Architecture&Building Press,1994:102-110.(in Chinese)
[8]方晞,伏苓.高浊度水理论与技术[M].北京:化学工业出版社,2004:68-75.Fang X,Fu L.Theory and technology of high turbidity water[M].Beijing:Chemical Industry Press,2004:68-75.(in Chinese)
[9]李圭白.高浊度水的动水浓缩规律和自然沉淀池的计算方法[J].土木工程学报,1964(1):76-86.Li G B.Law of hydrothermal enrichment of high turbidity water and the calculation method of natural sedimentation tank[J].Journal of Civil Engineering,1964(1):76-86.(in Chinese)
[10]李圭白.对高浓度浑水静水沉淀浓缩若干理论问题的探讨[J].哈尔滨建筑工程学院学报,1981(2):1-9.Li G B.Discussion on some theoretical problems of sedimentation and concentration of high concentration muddy water[J].Journal of Harbin Institute of Civil Engineering,1981(2):1-9.(in Chinese)
[11]李圭白,阎立华.高浊度水沉淀池计算理论的实验验证[J].哈尔滨建筑工程学院学报,1985(1):53-62.Li G B,Yan L H.Experimental verification of calculation theory of high turbidity water sedimentation tank[J].Journal of Harbin Institute of Civil Engineering,1985(1):53-62.(in Chinese)
[12]费祥俊.泥沙的群体沉降——两种典型情况下非均匀沙沉速计算[J].泥沙研究,1992(3):11-19.Fei X J.Settling of particles in suspension—two typical cases in calculating the settling velocity of nonuniform sediment[J].Journal of Sediment Research,1992(3):11-19.(in Chinese)
[13]郑邦民,夏军强.固体颗粒的群体沉降速度分析[J].泥沙研究,2004(6):40-45.Zheng B M,Xia J Q.Analysis of group settlement velocity of solid particles[J].Journal of Sediment Research,2004(6):40-45.(in Chinese)
[14]Imai G.Settling behavior of clay materials[J].Soils and Foundations,1980,20(2):61-77.
[15]Tan T S,Yong K Y,Leong E C,et al.Behavior of clay slurry[J].Soils and Foundations,1990,30(4):105-118.
[16]Sridharan A,Prakash K.Settling behavior of fine grained soils[J].Indian Geotechnical Journal,1997,27(3):278-309.
[17]US Army Corps of Engineers.Technical report D-77-21:sizing of containment area for dredged material[R].Washington,D.C.:US Army Corps of Engineers,1977.
[18]钱宁.高含沙水流运动[M].北京:清华大学出版社,1989:202-216.Qian N.High sediment flow movement[M].Beijing:Tsinghua University Press,1989:202-216.(in Chinese)
[19]韩其为.水库淤积[M].北京:科学出版社,2003:259-276.Han Q W.Reservoir siltation[M].Beijing:Science Press,2003:259-276.(in Chinese)
[20]涂启华,扬赉斐.泥沙设计手册[M].北京:中国水利水电出版社,2006:345-350.Tu Q H,Yang P F.Sediment design manual[M].Beijing:China Water&Power Press,2006:345-350.(in Chinese)
[21]JTS 181-5-2012,疏浚与吹填工程设计规范[S].北京:人民交通出版社,2012.