无纺土工织物垂直渗透特性试验研究  

Experimental study on the vertical permeability of nonwoven geotextiles

作　　者：周文渊[1] 方林 ZHOU Wenyuan;FANG Lin(Anhui and Huaihe River Institute of Hydraulic Research,Hefei 230088,China;Anhui Gangkouwan Reservoir Management Bureau,Xuancheng 242000,China)

机构地区：[1]安徽省·水利部淮河水利委员会水利科学研究院,安徽合肥230088 [2]安徽省港口湾水库灌区管理局,安徽宣城242000

出　　处：《江淮水利科技》2024年第2期18-22,共5页Jianghuai Water Resources Science and Technology

基　　金：安徽省·水利部淮河水利委员会水利科学研究院青年创新计划项目(KY202206)。

摘　　要：采用单位面积质量为200,300,400g/m^(2)的无纺土工织物开展了一系列垂直渗透试验,分析了各组试验结果的差异,并探讨了试样单位面积质量和层数对试验结果的影响。结果表明:流速与水头差成线性关系,并随着试样层数的增加而减小;透水率随着单位面积质量和试样层数的增加逐渐下降;各组试样的垂直渗透系数值在同一数量级,相同单位面积质量的试样垂直渗透系数随层数的变化无明显规律;相同层数试样的垂直渗透系数随着单位面积质量的增加而减小。Aseries of vertical permeability tests were conducted using non-woven geotextiles with unit area weights of 200,300,400 g/m^(2) The differences in the results of each test group were analyzed,and the influence of the unit area mass and the num-ber of layers of the samples on the test results was discussed.The results indicated that the flow rate was linearly related to the hydraulic head,decreasing with an increase in the number of sample layers.The permeability gradually decreased with an in-crease in unit area weight and the number of samplelayers.The vertical permeability coeficient values for various sample groups are within the same order of magnitude.For specimens with the same unit area weight,the vertical permeability coeffi-cient showed no obvious pattern with respect to the number of layers.With the same number of sample layers,the vertical per-meability coefficient decreases with an increase in unit area weight.

关 键 词：无纺土工织物 垂直渗透系数 透水率 

分 类 号：TU531.7[建筑科学—建筑技术科学]