INFLUENCE OF DYNAMIC DISTURBANCE ON EVOLUTION AND STABILITY OF DEEP UNDERGROUND ROCK MASS
According to the self-organizing characteristic of rock system during evolution, synergetics is applied to investigate the evolution process by taking dynamic disturbance into account, and a generalized dynamical equation is established. And then a potential function equation is derived from analysis of rock mass structure.Furthermore, by using potential function method, we analyzed the influence of dynamic disturbance on evolution and stability of rock system. The relationship between critical point of instability and parameters of control parameter and disturbance intensity is also discussed and a formula which can be used to forecast critical point of instability is derived. Results indicated that dynamic disturbance can not only decrease the stability of rock system but also induce its instability under certain conditions. Under same static states, stability and feasibility of disturbance induced instability might increase along with increasing of fluctuation intensity.The capability of destroying rock mass for a given disturbance is also effected by the state or control parameters of rock mass.
dynamic disturbance rock mass stability induced instability evolution
P. Shao Y.N. He J.K. Long L.F. Zhou
State Key Laboratory for Geomechanics and Deep Underground Engineering, and School of Architecture a School of Architecture and Civil Engineering, China University of Mining and Technology, Xuzhou.Chin
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）