Abstract
The contaminated area is located in Yamagata Prefecture, and it has appeared significantly in 1991. Our task is initiated in 1993, and the purpose of this research is to constitute a simulation code available for recovery and improvement of these polluted areas.
The former part in this paper describes the survey on this polluted area. The extent is two km long in east-west direction, one km long in south-north direction, then one hundred meter in depth. The area is deeply contaminated by Trichloroethylene and slightly by Tetrachloroethylene. Not only present wells but also shut-in wells might be influential to propagation of pollution both horizontally and vertically. Sources of pollution might be of surface spill of raw TCE and distilled TCE in re-cycled system.
The latter part describes the constitution and the test-run of the simulation code which is composed of equivalent both particle- and fluids phase (two-phase) from the practical point of view in unsteady-state three-dimensional system. Consequently emission of pollution over impermeable layers carried through shut-in wells is simulated in addition to the infiltration of polluted water to free ground water table.
