Destruction mechanism of rock burst in mine roadways and their prevention

作者：Gao, Mingshi; Zhao, Yichao^*; Chen, Xi; Lu, Quanti; Liu, Ang

来源：Disaster Advances, 2013, 6: 34-43.

• Roadway
• rock burst
• destruction mechanism
• energy criterion
• prevention measure
• engineering application

Rock bursts usually lead to collapse and closure of roadways and impact on mine safety and production. The reason for such rock bursts is that the total deformation energy accumulated in surrounding rocks exceeds a critical threshold. The greater the elastic complementary energy (the difference between the total deformation energy and the minimum kinetic energy) is, the more serious the rock burst. Six types of seismic source model and two typical rock bursts in a coal mine were analysed, and the mechanisms of rock burst behaviour studied. The mechanical model of vibration damage in this kind of roadway was established, with the energy criterion of burst failure and the destruction-resisting ability of the carrier composed of support-surrounding rocks was deduced. Meanwhile, based on a mechanical model of vibration damage, counter-measures, including decreasing the external source energy, improving the support strength, using a flexible energy storage support system, setting the weak structure of surrounding rocks of roadways reasonably, etc., were proposed Finally, we design the support parameters for the coal-mass; engineering practice shows that the theoretical results were applicable.

• 出版日期2013-11
• 单位中国矿业大学（北京）