Modeling Solution Distribution During Block Cave Copper Leaching Using the Analytic Element Method.
Schmidt-RD; Salovich-ME; Jagusch-MH
Engineering Foundation Conf Santa Barbara California 1987 Oct; :61-80
The analytic element modeling method is used in the U.S. Bureau of Mines mineflo hydrology program to describe leachant flow in a modified block cave leaching operation at the San Manuel Copper Mine. The method of analytic elements is based on superposition of analytic functions specially constructed in order to efficiently model hydrologic features encountered in a rubblized block cave setting, including permeability zones, discrete fractures, semipermeable barriers, and distributed sources and sinks. Leach solution at the San Manuel site is injected in wells drilled from the surface into rubblized oxide ore. Pregnant leach solution is recovered in underground workings. Flow analysis using the mineflo model has focused on two related concerns at the San Manuel site: describing saturated conditions within the rubblized ore material, and accounting for the difference between volumes of injected and recovered leach solution. The placement of injection wells in relation to collection workings and the permeability and storage properties of rubblized ore material are hydrologic variables that relate significantly to these concerns.
Engineering Foundation Conf., Santa Barbara, California, Oct. 25-30, 1987; Eng. Foundation, PP. 61-80