Tracer Tests in flooded underground mines
Tracer tests are a common means to investigate the hydrogeological conditions in the hydrosphere. Nevertheless, only few successful tracer tests in flooded underground mines have been described. In two flooded German underground mines tracer tests with club moss spores (Lycopodium clavatum) and microspheres had been conducted by the use of the LydiA technique. Both times, effective velocities between 1 and 8 m min could be calculated and a good hydraulic connection between the mines’ parts investigated could be proved. Lycopodium Apparatus (LydiA)
Acidic mining lakes : acid mine drainage, limnology, and reclamation
Limnological Case Studies on Acid Lakes. - Inorganic Processes of Acidification. - Remediation Concepts and Case Studies. - Results of Group Discussions and Outlook.
The use of tracers to investigate the relationship between mining subsidence and groundwater occurrence at Aberfan, South Wales☆
Abstract Four groundwater tracing experiments, using sodium chloride and sodium fluorescein as tracers, were undertaken at Aberfan, in order to investigate the influence of mining subsidence on the pattern of groundwater flow. Measurements indicated that areas subject to tensional strains were characterised by rapid groundwater movement and areas subject to compressional strains by slow or negligible groundwater movement. Boundaries between zones of tensile and compressional strains should be regarded as potential hydraulic discontinuities. Mining subsidence appeared to have contributed to the enlargement of the groundwater catchment draining the tip-complex at Aberfan.