ABSTRACT
High-resolution locations of microseismic events in mines would greatly augment the identification and mapping of geologic structures such as faults within the rock mass. Two general classes of numerical location techniques were considered: direct solution and iterative solution. Next, an attempt was made to model the various physical errors associated with a real microseismic array assuming as imple homogeneous and isotropic velocity structure. One source of error is the spatial uncertainty of the receiver coordinates. Receiver positions for a real array were obtained by a survey using electronic distance measurement (EDM) equipment. The uncertainties associated with the EDM-surveyed receiver coordinates are estimated to be 0.05 m or less. The accuracy and precision of source locations for a given system can be field tested by locating calibration blasts.
