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1. IntroductionIt has been for decades to apply isotope tracer method to detect fissured-rock seepage flow. The method is now widely applyed for hydraulic engineering, mining and survey of groundwater etc. and successful in many engineering problems.The n
1. IntroductionIt has been for decades to apply isotope tracer method to detect fissured-rock seepage flow. The method is now widely applieded for hydraulic engineering, mining and survey of groundwater etc. and successful in many engineering problems. N