Analysis of Conversion Relation Between Surface Water and Ground Water in the Middle Reaches of Heihe River by Means of ²²²Rn、EC and Section Flow Measurement

详细信息   

• 责任者：Zhang Long (No.2 Geology and Mineral Exploration Team ; Gansu Provincial Bureau of Geology and Mineral Exploration and Development ; Lanzhou 730020 ; China) ; He Jianghai
• 刊名：Gansu Geology
• 出版年：2008
• 卷期：17(1)
• 关键词：水资源 ; water resources ; 氡—222 ; Rn-222 ; 甘肃 ; Gansu
• 页码：p.88-91
• 图表：3 illus., 2 tables, 4 refs.
• 分类号：1701
• issnNo：ISSN1004-4116
• isbnNo：CN62-1191/P

摘要

After flowing out of Yingluoxia Gorge, Heihe River experiences several conversions of leakage to underground and recharge back to the river. With the aim to study this conversion relation between surface and ground water, 222Rn is employed as the tracer to determine location where ground water discharge and recharge rate, analysis of electrical conductivity (EC) and section flow measurement are used. The measured data show that the surface water leak into the underground at the part from Yinluoxia Gorge to Heihe Bridge in Zhangye, where the leakage rate is 0.248~0.433m3/s·km; but the ground water seeps out to the river at the part from Heihe Bridge to Zhengyi Gorge, where the seepage rate is 0.042~1.057 m3/s·km. On the basis of calculation of inter-recharge rate, further the inter-recharge volume could be calculated accordingly in the various reaches and period.