水利水电技术2018，Vol.49Issue(2)：23-29,7.DOI:10.13928/j.cnki.wrahe.2018.02.004
季节性冻土区融雪入渗对地下水的补给作用分析
Analysis on recharging effect from snowmelt infiltration on groundwater within seasonal frozen-soil region
摘要
Abstract
In order to analyze the recharging effect from snowmelt infiltration on groundwater within the seasonal frozen-soil region,the corresponding relationship between the dynamic variation characteristics of the groundwater level and the correlative environmental factors during both the frozen period and the frozen-thaw period is analyzed herein through the systematic dynamic monitoring on the ground temperature,groundwater level,soil temperature and soil humidity of a small-sized field experiment site.On the basis of this,the impacting factor of the permeability of frozen-soil layer is analyzed,and then the corresponding groundwater recharging modes for different frozen-thaw stages in the seasonal frozen-soil region are proposed.The study result shows that the infiltration of the atmospheric precipitation within the seasonal frozen-soil region must be calculated in three time intervals,i.e.,non-frozen period,frozen period and frozen-thaw period,in which the atmospheric precipitation during frozen period occurs in form of snowfall without any recharging effect on groundwater.During the frozen-thaw period in spring,the accumulated snow begins to thaw,which can infiltrate alone or together with the atmospheric precipitation and has a more significant recharging effect on groundwater,however,the infiltration recharging coefficient is relatively less.In the area of the actual case for the study made herein,the recharging coefficient of the snowmelt(precipitation) infiltration during the frozen-thaw period is only about 1/2 of the infiltration coefficient of the atmospheric precipitation during the non-frozen period.关键词
融雪入渗/季节性冻土区/地下水补给Key words
snowmelt infiltration/seasonal frozen-soil region/recharge of groundwater分类
地质学引用本文复制引用
郗鸿峰,程婷婷,洪沛东,郝岳峰,邵宇飞,杜新强..季节性冻土区融雪入渗对地下水的补给作用分析[J].水利水电技术,2018,49(2):23-29,7.基金项目
国家自然科学基金项目(41472213,41672231) （41472213,41672231）
