METHOD OF NON-EXPLOSIVE ROCK DESTRUCTION Russian patent published in 2014 - IPC E21C37/06 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry, in particular to rock destruction, and can be used in the mining and construction industries for the separation of the shaped blocks of rock from the mass. The method of non-explosive rock destruction comprises drilling holes, installing in them of the pipes preliminarily cut along the length, to form one or several slots which are oriented in directions of the desired separation of the rock block from the mass. Then the holes are filled with a composition expanding when hardening. As a result of hardening the composition increases in volume, which leads to the increase in pressure on the pipe walls. The maximum force vector will be directed toward the slot, which enables to separate the block of a given configuration from the mass. In the implementation of the method around the holes the stress field is formed, which is not concentric, but ellipsoidal.

EFFECT: invention enables to create the desired direction of the line of separation of rocks from the mass without increasing the frequency of drilling holes.

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