EFFECT OF STRESS WAVES ON THE DANGER OF ROCK BURST
The energy accumulation and its position are two main factors used for judging rock burst occurring. An energy density criterion to distinguish the danger of rock burst was proposed based on this assumption. The process of the energy accumulation and the effect of the intensity of stress wave Pmax on the energy accumulation was simulatedand analyzed by employing ANSYS/LS-DYNA, and the characteristic and the position of the energy accumulation was obtained. Research results show that the stress wave is an important factor in energy accumulation in rocks near excavation boundary and it can result in rock burst; moreover, its intensity, Pmax, determines the value of themaximal energy density (Ud) and the distance between the position and the surrounding roadway, namely, the value of energy density factor k. The study results are useful to the study of rock burst mechanism and the forecast of rock burst.
AI-HONG LU XIAN-BIAO MAO HAI-SHUN LIU
State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & Technology, Xuzhou, Jiangsu, 221008, P.R.China School of Sciences, China University of Mining & Technology Xuzhou, Jiangsu, 221008, 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
891-898
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）