经向拉伸对W100编织布覆砂系统渗透特性的影响  

Effect of warp stretching on permeability characteristics of sand covered with W100 geotextile system

作　　者：肖豪 满晓磊 陈志文 鲍永健 吴英杰 钱梦娇 XIAO Hao;MAN Xiaolei;CHEN Zhiwen;BAO Yongjian;WU Yingjie;QIAN Mengjiao(College of Civil and Architecture Engineering,Chuzhou University,Chuzhou 239000,China)

机构地区：[1]滁州学院土木与建筑工程学院,安徽滁州239000

出　　处：《黑龙江工程学院学报》2022年第3期14-18,共5页Journal of Heilongjiang Institute of Technology

基　　金：安徽省高校自然科学重点项目(KJ2021A1099);全国大学生创新创业训练计划项目(2021CXXL113)。

摘　　要：为探究经向拉伸对W100编织布覆砂系统渗透特性的影响,采用梯度比渗透仪对拉应变分别为0%、3%、6%、9%的土工织物进行无覆砂透水试验和土工织物覆砂渗透试验,测定并计算不同拉伸状态下土工织物的流速及土工织物覆砂系统的渗透压力、渗流流速、漏砂量及渗透系数、梯度比等渗透特性参数,最终分析经向拉伸对土工织物覆砂系统透水性能、防淤堵性能和保土性能等渗透特性的影响。试验结果表明:经向拉应变从0%~3%时,土工织物覆砂系统的透水性能和防淤堵性能减弱,保土性能增强;当拉应变从3%~9%时,土工织物覆砂系统的透水性能和防淤堵性能增强,保土性能减弱;即当经向拉应变为3%时,土工织物覆砂系统的淤堵最严重,其透水性能和防淤堵性能最弱,而保土性能最强。The permeability of geotextile and sand covered with geotextile under tensile strain of 0%,3%,6%and 9%respectively was tested by gradient ratio permeability tester to investigate the influence of the tensile on the permeability of W100 geotextile.In the tests,the permeability rate of geotextile,the permeability pressure,seepage velocity and flow rate of sand covered with geotextile were measured and calculated.The effect of tensile on the permeability,silt prevention and soil retention of sand covered with geotextile is analyzed.The result shows that the permeability and anticlogging property of the sand covered with geotextile are weakened and the ability of soil conservation is enhanced when the tensile strain is from 0%to 3%.Contrarily,when the tensile strain is from 3%to 9%,the permeability and anticlogging property of the sand covered with geotextile are enhanced and the ability of soil conservation is weakened.Hence,when the tensile strain is 3%,the permeability and anticlogging property of the sand covered with geotextile are the weakest,and the ability of soil conservation is the strongest.

关 键 词：织物覆砂 经向拉伸 渗透特性 梯度比 

分 类 号：TV64[水利工程—水利水电工程]