文章摘要
陈敏建,邓伟,赵勇,汪勇.半湿润区径流形成的力学分析[J].水利学报,2022,53(6):666-673
半湿润区径流形成的力学分析
Mechanical analysis of runoff generation in semi-humid area
投稿时间:2021-08-23  
DOI:10.13243/j.cnki.slxb.20210766
中文关键词: 降雨径流受力  包气带  土壤气体阻力  径流形成机制  产流基准埋深  地表径流消失临界埋深
英文关键词: forces in rainfall-runoff process  vadose zone  soil air resistance  mechanism of runoff generation  reference groundwater depth of runoff generation  critical groundwater depth of the disappearance of surface runoff
基金项目:
作者单位
陈敏建 中国水利水电科学研究院, 北京 100038 
邓伟 中国水利水电科学研究院, 北京 100038
清华大学 水利水电工程系, 北京 100084 
赵勇 中国水利水电科学研究院, 北京 100038 
汪勇 中国水利水电科学研究院, 北京 100038 
摘要点击次数: 765
全文下载次数: 204
中文摘要:
      本文针对包气带对径流形成的支撑作用,建立降雨径流与地下水埋深的定量变化关系。根据力学原理分析降雨径流过程的作用力形成与变化,提出了径流形成力学分析理论,推导出降雨径流关系与包气带厚度的定量联系。在此基础上,将自然常态下维持稳定的降雨径流关系的包气带厚度定义为产流基准埋深,针对地下水位下降导致地表径流减少定义了地表径流消失临界埋深,完成了上述问题的计算公式推导。以华北平原为典型进行了初步实证研究,分析计算并实证了产流基准埋深,初步提出了地表径流消失的临界埋深,结果表明与实测资料非常吻合。包气带气体压强受土壤条件影响较大,是力学分析的关键,需要进一步深入研究。
英文摘要:
      This paper studied the generation and variation of forces during the rainfall-runoff process based on the principle of mechanics and derived the quantitative relationship between rainfall-runoff relationship and vadose zone thickness.On this basis,the thickness of vadose zone,which maintains a stable rainfall-runoff relationship under natural conditions,is defined as the reference groundwater depth of runoff generation.It is used as the original condition to explore the mechanism of rainfall-runoff relationship variation and the critical condition for the disappearance of surface runoff.Finally,a case study was conducted on the North China Plain.The study results show that the air pressure in the vadose zone is the key for mechanical analysis,and further multi-disciplinary researches are needed.
查看全文   查看/发表评论  下载PDF阅读器
关闭