SIMULATION EXPERIMENT SYSTEM AND EXPERIMENT METHOD FOR SIMULATING CUTTING DUST PRODUCTION OF COAL AND ROCK MASS

摘要

A simulation experiment system and experiment method for simulating cutting dust production of a coal and rock mass. The experiment system comprises an experiment platform. A cutting experiment table (1) is placed on the experiment platform; a coal sample (8), a loading device (15) for distributing loads arbitrarily, a traction speed loading device (2), implementation devices in various constraint manners, a roller (7) rotating speed control device and a cutting pick (5) switching device, a mechanical monitoring device and a dust monitoring device are provided on the cutting experiment table. The experiment system controls subsystems to complete experiment requirements by means of a central control system. The experiment system can achieve simulation analysis on cutting dust production of an underground coal face and a heading face; simulation of dust production caused by cutting damage of different cutting picks under different ground stresses in an excavation operation of different coal types of the coal and rock mass can be carried out, mechanical analysis of the cutting picks in the cutting process can be carried out, and research on the influence of different cutting pick types on dust concentration, particle sizes, speeds and microscopic characteristics in the cutting process can be carried out, and the like. Theoretical and technical support is provided for dust prevention and control of mining and excavation face of a mine.