河床垂向渗透系数空间变异性的三维分析  

Analysis of Three Dimensional Spatial Variability of Vertical Streambed Hydraulic Conductivity

作　　者：介飞龙 李升 JIE Feilong;LI Sheng(College of Geology and Mineral Engineering,Xinjiang University,Urumqi 830046,China)

机构地区：[1]新疆大学地质与矿业工程学院,新疆乌鲁木齐830046

出　　处：《人民黄河》2018年第4期49-54,共6页Yellow River

基　　金：国家自然科学基金资助项目(U1603243)

摘　　要：河床垂向渗透系数的空间变异性对流域内河水与地下水转化机理研究具有重要意义。采用渗水仪法和竖管法共测定了玉龙喀什河河床垂向渗透系数25组,研究了河床深度方向、垂直于河流方向和河流沿程方向的河床垂向渗透系数空间变化特征,并分析了产生变异的影响因素,总结了河床垂向渗透系数变异性的维度效应,结果表明:玉龙喀什河河床垂向渗透系数的变异性受泥沙淤积作用、风积作用、河流沉积作用等诸多因素的影响,在不同维度下,河床沉积物变异性的主导因素不同,不能以单一因素判别河床沉积物渗透系数的变异性。The vertical streambed hydraulic conductivity plays an important role and has great significance in the study of the conversion mechanism of streambed water and groundwater.This paper studied on the determination of the Yurungqash River a total of 25 test points of vertical streambed hydraulic conductivity using seepage meter method and standpipe method.It studied the spatial variation characteristics of vertical streambed hydraulic conductivity with different depths,vertical directions of river and route directions,analyzed the influencing factors of variability,and summarized the dimensional effect of the variability of the vertical streambed hydraulic conductivity.The results show that Yurungqash River vertical streambed hydraulic conductivity is affected by many factors,including floods,aeolian sedimentation and water dynamic effect;in different dimensions,the dominant factors of vertical streambed variability of hydraulic conductivity are different.Vari-ability of vertical streambed hydraulic conductivity can not be determined by a single factor.

关 键 词：垂向渗透系数 变异性 河床 维度效应 玉龙喀什河 

分 类 号：P345[天文地球—水文科学]