| 摘要 |
FIELD: mining.SUBSTANCE: invention relates to mining industry and can be used for determination of mechanical energy of moving bodies in mine workings of mines. Using method body is installed in inlet section of mine working, body weight is measured, stationary air environment is installed in mine working. Providing body possibility of movement along working, its length and time of travel is measured, specified speed of medium relative to body is determined. Preset pulse of body and maximum deviations from their values are determined. In presence of deviations their corresponding values in outlet section of mine working are established, pulse and speed of medium relative to body are measured and specific density of volumetric flow rate of medium is determined. Then body pulses in outlet section of mine working and specific densities of volumetric flow rate at each measurement are measured. Indicators of body pulse change modes and specific density of volumetric flow rate of medium are determined. Value of initial body pulse at each measurement is determined. Specific rate of resistance of environment to body movement and mechanical energy of moving body in end section at variable pulse, specific density of volumetric flow rate of medium variable, different modes of their change by given formulas are determined. Ratios of actual mechanical energy to its allowable value conditions are defined. Under condition when actual value of energy exceeding tolerable, to obtain required technical result actual energy value below allowed is changed.EFFECT: technical result consists in improvement of accuracy of determination of mechanical energy of moving bodies and improvement of reliability of air flow supply rate in mines.1 cl, 1 dwg, 1 tbl |
