A computerised simulation model has been developed to select the most
suitable digging method of a dragline operation for a given geological
condition. The developed procedure uses a geological ore body model as
the basis for the geologic database. The simulation selects the most cost
effective dragline digging method from a database of various dragline
digging methods The database consists of common and innovative
dragline methods currently used in Australian open cut mines. A
generalised computer package, DSLX, was extensively used to simulate
various dragline digging methods. The DSLX software uses predefined
functions to build strip geometry, working benches, blast profiles and
spoil piles. The outputs from DSLX in form of volumetric, swing angles
and hoist distances data are then aggregated with dragline specifications
and site time study data to compare productivity of selected digging
methods. The result of a case study showed that this procedure lends itself
to the 'optimum' selection a dragline digging method for a given coal
deposit.