Blasting pressure relief technology can be applied to reduce the stress concentration of coal-rock mass and avoid the rockburst disasters effectively in coal mine. Taking the working face 23 130 of Yuejin coal mine for example

the effect of blasting pressure relief is simulated by using the fast Lagrangian analysis of continua in 3 dimensions (FLAC3D). Stress distribution of surrounding rock and diversion law under different conditions are studied; and effect of pressure relief on mining site is tested by electromagnetic radiation (EMR) monitoring technology. The result shows that stress peak value decreases and transfer distance increases with the increasing of explosive charge. Stress peak value decreases with the increasing of coal seam thickness

but transfer distance is nearly unchanged. Stress peak value decreases with the increasing of mining depth

but transfer distance decreases. The result of pressure relief is efficient with the decreasing of EMR signals in blasting region. Combining the numerical simulation method and electromagnetic radiation technology

the result provides a basis for selecting reasonable blasting parameters in working face and reducing rockburst risk effectively