Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1995, Vol. 6 ›› Issue (4): 230

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RADIOACTIVE OR NATURAL TRACER TECHNIQUES FOR LEAK DETERMINING OF DAM ABUTMENT

Chen Jiansheng (陈建生), Du Guoping (杜国平), Zheng Zheng (郑 正) and Sun Jing (孙 菁)   

  1. Institute of Application of Atomic Energy, Jiangsu Academy of Agricultural Sciences, Nanjing 210014
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Chen Jiansheng (陈建生), Du Guoping (杜国平), Zheng Zheng (郑 正) and Sun Jing (孙 菁). RADIOACTIVE OR NATURAL TRACER TECHNIQUES FOR LEAK DETERMINING OF DAM ABUTMENT.Nuclear Science and Techniques, 1995, 6(4): 230

Abstract: Infiltration and localization of preferential infiltration zones at the dam abutment are measured using radioactive tracer tests of flow in boreholes, meanwhile interconnection between boreholes and the energing water points is analysed. The theory and practice of radioactive tracer synthetic detective method are described to give methods and calculation formulae used under the condition of stable flow in single well to measure permeability coefficient and hydrostatic heads. Major single hole techniques including measurement for seepage line, velocity, rate of seepage flow and relationship of recharge of groundwater in aquifers are introduced briefly. The possibilities offered by natural tracers aiu analysed, including electric-conduct, pH-value and temperature of water as well as stable isotopes (D, 18O) and tritium. Furthermore, the sensibilities of this theory and methods were confirmed by detecting seepage flow field of Xinanjiang Dam.

Key words: Isotope tracers, Natural tracers, Single hole techniques, Seepage flow field, Hydrostatic heads