STABILOMETER Russian patent published in 2017 - IPC E21C39/00 

FIELD: mining.

SUBSTANCE: stabilometer for testing the rock samples contains a sample chamber, a load cylinder with a piston, a pressure sources connected to the chamber and the cylinder, and stabilization loading slide valve, mounted in the piston and fixed by a threaded sleeve at the base of the cylinder. There is the cavity in the piston, where the support sleeve is located, connected to the slide valve and contacting the piston shoulders. There is the drain hole in the load cylinder, where the shut-off control valve with electrical motor is installed, it is electrically connected with the electronic extensometer, the extensometer housing is fixed inside the loading cylinder on the shoulders, and the measuring rod of the extensometer brought out through the hole in the shoulders to the cavity of the piston and contacting the bearing sleeve.

EFFECT: improved accuracy of rocks dimensional tests by eliminating inaccuracy, connected to the potential elastic power of the working fluid when it is compressed, and reduction of negative impact of the cylinder, piston and plunger device siltation.

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