METHOD FOR CONTROLLING MINE SHAFTS SURFACE ROUGHNESS IN SALT ROCKS Russian patent published in 2017 - IPC G01N27/22 

FIELD: mining.

SUBSTANCE: in several places of the test surface, using measurement instruments, average depth of the depressions is determined, then in the same areas the electrical capacitance value of the air gap formed between the surface of the mine shaft built of salt rocks and the surface of the instrument for measuring the electrical capacitance when placing it on the test surface is determined. Thereafter, based on the data obtained, the dependence of the electrical capacitance of the air gap in some areas of the controlled surface on the depth of the depressions in the same areas is determined, then the electrical capacitance on the entire lateral surface of the rock wall in the picotage sealing area is determined. Thereinafter its roughness is calculated.

EFFECT: providing opportunities to reduce the complexity by using electrical capacitance as a controlled parameter for determining the roughness degree of the mine shaft sections in salt rocks.