• 首 页期刊简介编 委 会规章制度作者指南审稿流程联系我们
期刊封面
陈亮,司朋举,张赏.降雨条件下含有球状微塑料的非饱和黄绵土入渗特性研究[J].河北工程大学自然版,2022,39(1):52-59
降雨条件下含有球状微塑料的非饱和黄绵土入渗特性研究
Study on the Unsaturated Infiltration Characteristics of Yellow Cotton Soil Containing Spherical Microplastics under Rainfall Conditions
投稿时间:2021-06-25  
DOI:10.3969/j.issn.1673-9469.2022.01.008
中文关键词:  降雨入渗  聚苯乙烯微塑料  入渗率  累积入渗量  浸润峰  体积含水率
英文关键词:rainfall infiltration  polystyrene microplastics  infiltration rate  cumulative infiltration  infiltration peak  volumetric water content
基金项目:国家自然科学基金资助项目(51778210)
作者单位
陈亮 河海大学 岩土力学与堤坝工程教育部重点试验室, 江苏 南京 210098
河海大学 土木与交通学院, 江苏 南京 210098 
司朋举 河海大学 岩土力学与堤坝工程教育部重点试验室, 江苏 南京 210098
河海大学 土木与交通学院, 江苏 南京 210098 
张赏 河海大学 岩土力学与堤坝工程教育部重点试验室, 江苏 南京 210098
河海大学 土木与交通学院, 江苏 南京 210098 
摘要点击次数: 200
全文下载次数: 63
中文摘要:
      为研究降雨条件下含有不同含量、不同粒径的球状微塑料黄绵土的非饱和入渗特性,开发了一套模拟降雨条件下土柱垂直入渗模型试验研究装置,对含有微塑料的非饱和黄绵土进行了七组降雨入渗试验。结果表明:(1)在降雨强度为20 mm/h、微塑料粒径为5 μm时,微塑料含量为0.05%时促进雨水入渗,其他微塑料含量阻滞雨水入渗,且随着微塑料含量的增加,积水点和饱和点出现的时刻越早。(2)在降雨强度为20 mm/h,微塑料含量为0.25%时,微塑料粒径为3 μm时显著促进雨水入渗,整个试验阶段不产生积水,微塑料粒径为5 μm和8 μm时产生较多积水,阻滞雨水入渗。(3)微塑料的疏水作用显著影响雨水入渗过程,但是其对峰值含水率的影响较微弱,峰值含水率随着微塑料含量的增加而逐渐减小,随着微塑料粒径的增大而逐渐增大。
英文摘要:
      In order to study the unsaturated infiltration characteristics of yellow cotton soil containing spherical microplastics with different content and different particle size under rainfall conditions, a set of model test equipment for soil column vertical infiltration under simulated rainfall conditions was developed. Seven sets of rainfall infiltration tests were carried out on the yellow cotton soil. The result shows: (1) When the rainfall intensity is 20 mm/h, the microplastic particle size is 5 μmand the microplastic content is 0.05 %, rainwater infiltration is promoted, and the content of other microplastics prevents rainwater infiltration, and as the content of microplastics increases, the water point and saturation point appear earlier. (2) When the rainfall intensity is 20 mm/h, the content of microplastics is 0.25 % and the particle size of the microplastics is 3 μm, the infiltration of rainwater will be significantly promoted, and no water will be generated during the whole test period. When the particle size of the microplastics is 5μm and 8μm, a lot of water will be generated, which will block the infiltration of rainwater. (3) The hydrophobic effect of microplastics significantly affects the process of rainwater infiltration, but its impact on the peak water content is relatively weak. However, its impact on the peak water content is relatively weak, the peak water content gradually decreases with the increase of the microplastic content, and gradually increases with the increase of the microplastic particle size.
  查看/发表评论  下载PDF阅读器  下载全文
关闭