Method and experimental device for identifying coal rock instability precursor characteristics by using energy dissipation rate

The invention provides a method and an experimental device for identifying coal rock instability precursor characteristics by using an energy dissipation rate. The method comprises the following steps: collecting monitoring data in the whole coal rock instability failure process; preprocessing the collected monitoring data to complete cleaning of the monitoring data and elimination of abnormal data; calculating the energy dissipation rate and the dispersion of the energy dissipation rate in the instability failure process of the coal and rock mass; and determining a response rule of the energy dissipation rate and the coal-rock mass instability, and obtaining a coal-rock instability precursor characteristic discrimination criterion to identify the instability state of the coal-rock mass. The method can provide a new analysis method and index for coal rock dynamic disaster early warning, and plays a positive role in improving the early warning accuracy of coal rock dynamic disaster monitoring and early warning