应用环境氚研究黄土包气带水分运移及入渗补给量

STUDY OF SOIL WATER MOVEMENT AND RECHARGE RATE OF RAINFALL INFILTRATION IN AERATION ZONE OF LOESS BY MEASURING NATURAL TRITIUM

包气带水分运移机理的研究和雨水入渗补给量的测定是一项重要的水文地质课题。近年来国外应用环境或人工同位素(尤其是氚)研究包气带内水运动机理的方法已日趋成熟,1985年,笔者应用环境氚法在山西平定张庄进行了这方面的研究,取得了满意的结果。发现黄土地区包气带中迄今仍保存着完整的核爆氚剖面,其形状较国外已发表的其它地层中的曲线都更为理想。1953年以来含核爆氚的雨水下渗仅10m左右,其中1963年的氚高峰值表现更为清晰。据此得出了其它一些参数。

One of important projects in hydrogeology isto study soil water movement and recharge rate ofrainfall infiltration in aeration zone, for which themethod of environmental or artifical isotopes, esp.tritium has been becoming mature day by dayabroad in recent years. In 1995, the authors investi-gated the aeration zone on loessland in Zhang zhuangvillage, Pingding County. Shanxi Province for stud-ying the soil moisture movement velocity and infil-tration recharge rate,and got a satisfactory result.it is found that bomb-produced tritium profile isstill kept intact in acralion zone at loessland so far.The curve of tritium profile is more ideal thanthose published abroad in other strata. The raimfallcontaining bomb-produced tritium has permeateclthe soil only ten metres or sosince 1953. The high-tritium peak of 1963 appears very clear,Some otherparameters were got on the basis of the measure-ment results, One of important projects in hydrogeology isto study soil water movement and recharge rate ofrainfall infiltration in aeration zone, for which themethod of environmental or artifical isotopes, esp.tritium has been becoming mature day by dayabroad in recent years. In 1995, the authors investi-gated the aeration zone on loessland in Zhang zhuangvillage, Pingding County. Shanxi Province for stud-ying the soil moisture movement velocity and infil-tration recharge rate,and got a satisfactory result.it is found that bomb-produced tritium profile isstill kept intact in acralion zone at loessland so far.The curve of tritium profile is more ideal thanthose published abroad in other strata. The raimfallcontaining bomb-produced tritium has permeateclthe soil only ten metres or sosince 1953. The high-tritium peak of 1963 appears very clear,Some otherparameters were got on the basis of the measure-ment results,