摘要
为研究不同粒径和含量球状微塑料的黄绵土在不同降雨条件下的盐分运移变化规律,利用室内一维土柱模型开展垂直入渗试验,得到不同降雨条件下的各含量和粒径微塑料的土柱入渗电导率随时间变化散点图。研究结果表明:在黄绵土中低含量微塑料显著促进NaCl溶液的入渗,高含量微塑料阻滞NaCl溶液的入渗,而降雨条件会改变微塑料临界含量;在黄绵土中稍小粒径微塑料显著促进NaCl溶液入渗,稍大粒径微塑料阻滞NaCl溶液的入渗;低含量和小粒径微塑料对降雨响应更灵敏。
In order to study the law of salt transport in loessial soil with diffferent particle sizes and contents of spherical microplastics under different rainfall conditions,a vertical infiltration experiment was carried out by using the indoor one-dimensional soil column model,and the scatter diagram of the infiltration conductivity of soil columns with different contents and particle sizes of microplastics under different rainfall conditions was obtained.The results showed that a low content of microplastics in loessial soil significantly promoted the infiltration of NaCl solution,while a high content of microplastics blocked the infiltration of NaCl solution,and the rainfall conditions changed the critical content of microplastics.In loessial soil,a slightly smaller particle size of microplastics significantly promoted the infiltration of NaCl solution,and a slightly larger particle size of microplastics blocked the infiltration of NaCl solution.The microplastics with lower content and smaller particle size are more sensitive to the rainfall response.
作者
陈亮
徐灿玮
司朋举
CHEN Liang;XU Canwei;SI Pengju(College of Civil and Transportation Engineering,Hohai University,Nanjing,Jiangsu 210098,China;Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing,Jiangsu 210098,China;Tibet Agricultural and Animal Husbandry University,Nyingchi,Tibet 860000,China)
出处
《河北工程大学学报（自然科学版）》
CAS
2023年第4期32-40,共9页
Journal of Hebei University of Engineering:Natural Science Edition
基金
国家自然科学基金资助项目(U2243244)。
关键词
微塑料
黄绵土
间歇降雨
盐分运移
降雨响应
microplastics
loessial soil
intermittent rainfall
salt transport
rainfall response
