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Computer Modeling of Fluid Flow During Production and Environmental Restoration Phases of in Situ Uranium Leaching.

Schmidt RD
MISSING :70 pages
This Bureau of Mines report describes the development and application of a computer model for simulating the hydrological activity associated with in situ leaching. The model is intended to provide uranium resource developers with a description of the flow behavior of leachants and ground water during the development, production, and restoration phases of a leaching operation involving an arbitrary pattern of injection and recovery wells. Different aquifer environments are modeled, using a closed-form solution to the partial differential equation that describes three-dimensional changes in piezometric head as a result of pumping from leachant injection and recovery wells. The computer program can model a maximum of 50 arbitrarily located wells. Numerical techniques involving difference quotients and taylor expansions about time points are used to derive time, velocity, areal sweep, and fluid volume parameters associated with leaching hydraulics. These parameters are output by the program in graphic and tabular formats. Other numeric methods insure that the program running time is minimized without significantly affecting the accuracy of results.
Publication Date
Document Type
IH; Report of Investigation;
Fiscal Year
Identifying No.
RI 8479
NIOSH Division
Source Name
Page last reviewed: November 26, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division