Research of detonating gas simulation system of ESD model on human body in coal mine

Abstract

Electrostatic discharge (ESD) model on human body has been constructed. “The Experiment Simulation system of ESD model on human body to detonate gas” has been made. The experimental system can measure the gas concentration of explosion and electrostatic potential on human body discharge, resistance and capacitance values in different oxygen concentration and temperature. Measurement accuracy of gas concentration can achieve 0.1 percent in this system. And the most likely to set off gas concentration in coal mine environment can be got, and the results show most likely to detonate the gas concentration was 8.5%, rather than the more easily the higher the concentration of gas detonation. When the human body capacitance is at 1800pF, a sufficient condition will be provided, as long as static voltage of 600V on human body, which can field strength of the breakdown 0.3mm gap in the gas mixture. The academic and experimental evidence can be provided for enacting safety standards for human body electrostatic in coal mine.