Moscow State Mining University, Moscow, Russia:

Shkuratnik V. L., Head of a Chair, Professor, Doctor of Engineering Sciences

Nikolenko P. V., Assistant, phone: +7 (499) 230-25-93

This paper analyses the disadvantages of traditional research methods of stresses in rock massif. Main of them are high laborintensiveness and uncertainty of corresponding measurements.

The mentioned disadvantages can be eliminated, during the usage of methods, which are based on the acoustic emission memory effect (Kaiser effect) for the control of deflected mode of the rock massif. The stress control scheme, which is based on this effect, suggests the extraction of rock samples, which are oriented in different directions from massif, and their following test loading. The analysis of different methods of experimental data interpretation is obtained. The main inaccuracy source of stress determination with the usage of Kaiser effect is a subjective and varied moment estimation of the demonstration of mentioned effect during the experimental tests.

A new technology for the stress deffinition is based on the curvature estimation of dependance diagram of total acoustic emission from the test loading value. This methodology allows to define the stress values objectively and with a minimum inaccuracy, according to the results of acoustic and emission measurings of rock samples, which are extracted from a rock massif.

The researches were held within the Federal Target Program “Scientific and scientific and pedagogical shots of innovative Russia for 2009-2013” (event 1.2.1).

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