Natural stress estimation by solving inverse problem using acoustic sounding data

Challenges for Development in Mining Science and Mining Industry

Miroshnichenko, N.A.^1 ; Panov, A.V.^1 ; Nazarov, L.A.^1

Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia^1

关键词: Acoustic sounding;    Inverse boundary value problem;    Objective functions;    P-wave arrival;    Quantitative estimation;    Root mean square differences;    Stress estimation;    Synthetic input;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012047/pdf
DOI  :  10.1088/1755-1315/262/1/012047

来源: IOP

【 摘 要 】

Under consideration is the approach allowing quantitative estimation of natural stress field components in the vicinity of underground objects based on solution of an inverse boundary-value problem using the data on acoustic sounding in an extended mine working. To ensure solvability of an inverse problem, the optimal sonic transmitter-receivers positioning and the limiting nominal error of measurements are determined. The objective function is set as a root-mean-square difference between the theoretical and actual head P-wave arrival times at the receivers; unimodelity of the objective function is illustrated using synthetic input data.