Incorporation of landform evolution modelling in mine rehabilitation planning

摘要

Computer simulations of the topographicevolution of the proposed post-mining rehabilitated landform forthe ERA Ranger Mine, showed that for an unvegetated andunripped surface the landform after 1000 y would havenumerous localised valleys (maximum depth = 7.6 m) and fans(maximum depth =14.8 m). Simulated evolution of a vegetatedand ripped landform showed maximum valley depth of 2.4 mand maximum deposition of 4.8 m. Modelling results, like these,can be used as a basis for decisions on the depth of tailingscover required to prevent tailings from being exposed to theenvironment within a certain time frame. Incorporation oflandform evolution simulations in the design process may resultin cost reduction while improving confidence in environmentalprotection mechanisms.