ABSTRACT
In order to explore the impact dynamic effect of coal-gas flow in under-ground equipment and facilities during the coal and gas outburst process, the coal-gas two-phase flow impact dynamic effect simulation experiment is carried out, and the impact of coal-gas two-phase flow on the impact damage of bracket, tramcar, air door, and other equipment and facilities is analyzed emphatically. The results show that under a pressure of 0.35 MPa, the gas pressure law of the bracket and air door is”rapid rise to peak, the pressure decreases and then increases, after slowing to reduce volatility lasts about five times, and ultimately tends to “ and the tramcar, bracket, and other equipment and facilities caused serious damage under the joint action of the gas and coal flow. Meanwhile, the existence of shock wave and the impact dynamic effect of coal-gas two-phase flow have been verified.
