渗管取水出水浊度影响因素的模拟研究

发布时间：2018-03-18 15:20

本文选题：渗管取水　切入点：渗透系数　出处：《西北农林科技大学学报(自然科学版)》2016年11期 　论文类型：期刊论文

【摘要】：【目的】研究渗管取水工程中出水浊度的影响因素,为渗管取水工程设计提供依据。【方法】通过物理模型试验,分析不同河床砂厚度(0.1,0.2,0.3,0.4,0.5和0.6m)在不同来水含沙量(0.5,1.0,1.5,2.0,2.5,3.0,4.0,5.0,10.0和15.0g/L)下对渗管取水出水浊度的影响。【结果】当来水含沙量一定时,随着河床砂厚度的增大,出水浊度逐渐减小;当河床砂厚度一定时,随着来水含沙量的增大,出水浊度逐渐减小,其中以河床砂厚度0.1m、来水含沙量为0.5g/L时的出水浊度最大,为982.33NTU,以河床砂厚度0.6m、来水含沙量15g/L时的出水浊度最小,为2.30NTU。采用综合渗透系数代替河床砂厚度进行理论分析,建立了滤水料渗透系数、来水含沙量与渗管出水浊度关系的拟合公式。实例分析表明,所得拟合公式与试验数据及实际工程实测数据均符合较好。【结论】渗管出水浊度的拟合公式可用于实际工程的指导。
[Abstract]:[objective] to study the factors affecting the turbidity of water outlet in the seepage pipe intake project, and to provide the basis for the design of the seepage pipe water intake project. [methods] through the physical model test, This paper analyzes the influence of different sediment thickness of different river bed on turbidity of outlet water from seepage pipe under different sediment content of 0.51.0 ~ 1.51.5U ~ (2. 0) ~ (2. 0) and 15.0g / L). [results] when the sediment content of incoming water is constant, the turbidity of outlet water decreases with the increase of sand thickness of riverbed. (3) the turbidity of effluent decreases gradually with the increase of sand thickness in the river bed, and the turbidity of outlet water decreases gradually with the increase of sand thickness in the river bed when the sediment thickness of the river bed is constant. The results show that the turbidity of the outlet water decreases with the increase of sand thickness in the river bed. When the sediment thickness of river bed is constant, the turbidity of effluent decreases gradually with the increase of sediment content in incoming water. The turbidity of effluent is the largest when the thickness of sand in river bed is 0.1 m and the sediment content of incoming water is 0.5 g / L. For 982.33 NTU, the turbidity of the effluent is the smallest when the bed sand thickness is 0.6 m and the sediment content of the incoming water is 15 g / L. the comprehensive permeability coefficient is used to replace the bed sand thickness for theoretical analysis, and the permeability coefficient of the filter water is established. A fitting formula for the relationship between sediment content in incoming water and turbidity of seepage pipe effluent. The fitting formula is in good agreement with the experimental data and the actual engineering data. [conclusion] the fitting formula of the turbidity of seepage pipe effluent can be used to guide the actual project.
【作者单位】：石河子大学水利建筑工程学院;新疆巴音郭楞蒙古自治州水利局;新疆水利厅;
【基金】：国家自然科学基金项目(11362019)
【分类号】：TU991.1

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