环境温湿度对新型导水土工布吸排水性能的影响

Impact of Environmental Temperature and Humidity on Water Absorption and Drainage Performance of New Type of Conductive Geotextile

以新型导水土工布为研究对象,采用高低温湿热交换试验箱进行室内试验,控制温度在5、10、20℃,湿度为40%、50%、60%、70%和80%共15组温湿度组合工况,研究新型导水土工布总排水量、重力排水量以及蒸发排水量的变化规律。结果表明:与重力排水方式相比,蒸发排水是新型导水土工布主要的排水方式。新型导水土工布的峰值排水速率和稳定后的排水速率均优于普通土工布,其蒸发排水速率随蒸发时间逐渐减缓。新型导水土工布的吸排水量随温度的升高而增大,随湿度的升高显著减小。温度为5℃、湿度为40%时,新型导水土工布的排水效果最显著。

Taking the new type of conductive geotextile as the research object,indoor experiments were conducted using a high and low temperature moisture heat exchange test box.A total of 15 temperature and humidity conditions were controlled at 5,10,and 20℃,with humidity of 40%,50%,60%,70%,and 80%.The changes in total drainage,gravity drainage,and evaporation drainage of the new type of conductive geotextile were studied.The results indicate that compared to gravity drainage,evaporation drainage is the main drainage method for the new type of conductive geotextile.The peak drainage rate and stable drainage rate of the new conductive geotextile are better than those of ordinary geotextiles,and its evaporation drainage rate gradually slows down with evaporation time.The water absorption and drainage capacity of the new conductive geotextile increases with the increase of temperature,and significantly decreases with the increase of humidity.When the temperature is 5℃ and the humidity is 40%,the drainage effect of the new conductive geotextile is the most significant.