STRESS WAVE CHARACTERISTICS IN THE PROCESS OF STRAIN COALBURST EXPERIMENTS
The characteristics of stress wave in the process of strain coal burst experiment are investigated in the paper from the viewpoint of interaction of stress waves through the free surface of a solid. One of the conditions triggering rockburst is interacted between strongly discontinuous waves and weakly discontinuous waves of plasticity. Tests about strain coal burst were conducted by using a real-triaxial rockburst system. It indicates that suddenly unloading one face from the coal specimen under testing is one necessary condition for rockburst. The released energy in the burst process is accompanied by the propagation of reflecting wave. Consequently, rockburst may be regarded as a result of stress wave propagation through rockmass. Rock failure, indeed, is a consequence of energy transferred unstably within rockburst, after accumulating of energy within rockmass.
JIN-LI MIAO MAN-CHAO HE DE-JIAN LI FAN-JIANG ZENG CHENG CHENG
School of Mechanics and Civil Engineering, China University of Mining and Technology Beijing, 100083, P.R.China State Key Laboratory for GeoMechanics and Deep Underground Engineering Beijing, 100083, P.R.China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1347-1352
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）