Study and application on the technology of destressing and elimination outburst by deep hole blasting

摘要

The geological conditions of the Xuandong No. 2 Mine were particular with high risk of outburst hazard. In order to ensure the safety of the production, the technology of destressing and elimination outburst by deep hole blasting was studied. Based on the on-site survey and theoretical analysis, the parameters were determined for numerical simulation which showed that the technology could improve stress distribution and reduce stress concentration greatly. Field application showed that the risk of outburst hazard was eliminated effectively, the goal of safety production could be achieved by using this technology.