ROCKBURSTS PREDICTION BASED ON ROCK DAMAGE OF ROOF AND FLOOR INDUCED BY MINING
LI Tie1，2，WANG Wei1，2，XIE Junwen3，XU Yuanqiang3，ZHANG Yuliang3，LI Shoufeng3，
WANG Lili4，ZHAO Huashan4
(1. Key Laboratory of High-efficiency Mining and Safety of Metal Mines，Ministry of Education，University of Science and Technology Beijing，Beijing 100083，China；2. School of Civil and Environment Engineering，University of Science and Technology Beijing，Beijing 100083，China；3. Huating Coalmine，Gansu Huating Coal Group，Huating，Gansu 744100，China；
4. Shanzhai Coalmine，Gansu Huating Coal Group，Huating，Gansu 744100，China)
Abstract：To explore the rockburst prediction principle and applied technology by microseismic method，in mine with high precision microseismic monitoring equipment，the continuous rock crack in mining process on site is monitored and analyzed with laws of rockburst induced by mining and self-made rockburst prediction software MapRAS. The result shows that deep diffusion of rock microcrack induced by mining at roof and floor is the main reason for the occurrence of rockburst. It is proposed that the deeply damaged of roof and floor induced by mining is an important factor in rockburst nucleation. The function and algorithm for identifying rupture damage depths of roof and floor by using microseismic data are established. Analysis displays that between damage depths of roof and floor exist linkage and there is corresponding to cycle breakage of roof key layer，as well as its after-effect，which reflects the loading and unloading processes of roof-floor. Most of the rockbursts in Huating coal field are roadway floor rupture. The engineering test indicates the method has higher prediction performance and good application effect.
李 铁1，2，王 维1，2，谢俊文3，徐元强3，张玉亮3，李守峰3，王利利4，赵华山4. 基于采动顶、底板岩层损伤的冲击地压预测[J]. 岩石力学与工程学报, 2012, 31(12): 2438-2444.
LI Tie1，2，WANG Wei1，2，XIE Junwen3，XU Yuanqiang3，ZHANG Yuliang3，LI Shoufeng3，. ROCKBURSTS PREDICTION BASED ON ROCK DAMAGE OF ROOF AND FLOOR INDUCED BY MINING. , 2012, 31(12): 2438-2444.
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2012, Vol. 31 
