TY  - JOUR
ID  - epos1337
UR  - http://dx.doi.org/10.1016/j.tecto.2007.04.012
IS  - 1-2
A1  - Lesniak, Andrzej
A1  - Pszczola, Grzegorz
N2  - A modified method of mine tremors location used in Lubin Copper Mine is presented in the paper. In mines where an intensive exploration is
carried out a high accuracy source location technique is usually required. The effect of the flatness of the geophones array, complex geological
structure of the rock mass and intense exploitation make the location results ambiguous in such mines. In the present paper an effective method of
source location and location's error evaluations are presented, combining data from two different arrays of geophones. The first consists of
uniaxial geophones spaced in the whole mine area. The second is installed in one of the mining panels and consists of triaxial geophones. The
usage of the data obtained from triaxial geophones allows to increase the hypocenter vertical coordinate precision. The presented two-step location
procedure combines standard location methods: P-waves directions and P-waves arrival times. Using computer simulations the efficiency of the created algorithm was tested. The designed algorithm is fully non-linear and was tested on the multilayered rock mass model of the Lubin Copper Mine, showing a computational better efficiency than the traditional P-wave arrival times location algorithm. In this paper we present the complete procedure that effectively solves the non-linear location problems, i.e. the mine tremor location and measurement of the error propagation.
VL  - 456
TI  - Combined mine tremors source location and error evaluation
in the Lubin Copper Mine (Poland)
AV  - none
EP  - 27
Y1  - 2008/08/01/
PB  - Elsevier
JF  - Tectonophysics
KW  - Mine tremors location; Non-linear optimization; Error estimation; Monte-Carlo methods
SN  - 0040-1951
SP  - 16
ER  -