A method for assessing the effect of explosive effects on the stress-strain state of a rock mass

摘要

FIELD: mining.SUBSTANCE: invention relates to mining, in particular to non-destructive methods for monitoring the state of rocks, and can be used to determine the state preceding the destruction of the rock massif, buildings and structures, as well as to forecast catastrophic manifestations. Method consists in creating two cavities – measuring volume that is a hole or a well, and volume, in which the explosion source is placed, which is exploded, and the parameters characterizing the state of the object are recorded. Internal volume of the measuring hole or well is sealed in such a way that the internal volume of the hole or well is connected to the atmosphere only by means of an air filter. Explosion source is exploded, after which air samples are taken from the internal volume of the hole or well, and the emission of submicron particles formed in the volume of the hole is recorded. To evaluate the condition of the rock under study, the particle size distribution function and their counting concentration are used. In the process of sampling from the internal volume of the hole or well, the rock under study is subjected to quasistatic compression together with the action of the explosion source.EFFECT: technical result consists in increasing the accuracy and reliability of the evaluation of the stress-strain state of the rock massif.1 cl, 1 dwg