Hydrogelogical characterization of a waste rock pile and bedrock affected by acid mine drainage from geophysical survey

摘要: Mining activities are known for the profound changes they cause in environment, especially those related to environmental liabilities generated by these enterprises. One major concern of this sector relies on acid mine drainage (AMD) process, which is formed exposure sulfide minerals oxidizing conditions. As a result, production low-pH saline waters favors mobilization heavy metals environment. In last decades, characterization and monitoring contamination plumes have become more feasible due application geophysical tools, precisely DC resistivity method. Thus, aim present study electrical tomography understand hydrogeological dynamic waste rock pile Osamu Utsumi uranium mine, with identification preferred groundwater AMD flow. The analysis 2D products allowed differentiation high salinity water accumulation zones (< 40 Ω m) interior pile. Likewise, evaluation pseudo-3D model interpolation sections was crucial recognition low within bedrock, possibly controlled fractures that work as recharge between fractured aquifer. discharge system fundamental step planning actions prevent water–sulfides interaction responsible generation AMD, also installation pumping systems.