ОЦЕНКА НАПРЯЖЕННОГО СОСТОЯНИЯ МАССИВА МЕСТОРОЖДЕНИЯ «ПИОНЕР» НА ОСНОВЕ АКУСТИКО-ЭМИССИОННОГО ЭФФЕКТА ПАМЯТИ ГОРНЫХ ПОРОД

M. I. Rasskazov; A. A. Tereshkin; D. I. Tsoy

doi:10.25635/2313-1586.2019.02.062

Authors

M. I. Rasskazov The Institute of Mining FEB RAS
A. A. Tereshkin The Institute of Mining FEB RAS
D. I. Tsoy The Institute of Mining FEB RAS

DOI:

https://doi.org/10.25635/2313-1586.2019.02.062

Keywords:

memory effect, acoustic emission, deformation rate, core samples, stressed state, tectonic dislocation

Abstract

The paper has presented the results of studies on the assessment of the stress-deformed state of the rock
mass of the gold ore deposit Pioneer using the method based on the acoustic-emission memory effect. The latter is based on the manifestation of acoustic emission when loading the samples by force exceeding the maximum stresses at which the sample was in conditions of natural occurrence. The ToniPACT II press was used to carry out the test, providing a constant rate of deformation of the sample 1.5 kN/s, as well as the portable device of local control Prognoz L for registration of parameters of acoustic emission. The studies have resulted in obtaining the correlations characterizing the changes in acoustic emission parameters with increased load. The analysis of the correlations has confirmed the Kaiser effect, which is manifested in 30% of the studied samples (mainly in diorite and metasomatites).