The critical slip surface of a fractured rock slope tends to extend along the fractures.Thus,fracture orientation plays a critical role in determining the critical slip surface.Based on fracture orientation data,this ...The critical slip surface of a fractured rock slope tends to extend along the fractures.Thus,fracture orientation plays a critical role in determining the critical slip surface.Based on fracture orientation data,this paper examines the critical slip surfaces of fractured rock slopes.Given that the surface of a fractured rock slope extends along the fracture surfaces,or the wedges,with each composed of two arbitrary fractures,the critical slip surface is determined via stochastic dynamics.In addition,a fracture frequency method is proposed as a means of analyzing the critical slip surface.According to this method,the critical slip surface slips in whichever direction has the lowest fracture frequency.Based on the stochastic dynamics method and the fracture frequency method,the critical slip surface of the slope is finally determined,that is,the critical slip surface takes the form of a plane passing the slope toe with a dip of 120° and a dip angle of 45°.展开更多
The correlated Levy flight is studied analytically in terms of the fractional Fokker-Planck equation and simulated numerically by using the Langevin equation, where the usual white Ltvy noise is generalized to an Orns...The correlated Levy flight is studied analytically in terms of the fractional Fokker-Planck equation and simulated numerically by using the Langevin equation, where the usual white Ltvy noise is generalized to an Ornstein-Uhlenbeck Levy process （OALP） with a correlation time τc. We analyze firstly the stable behavior of OULP. The probability density function of Ltvy flight particle driven by the OULP in a harmonic potential is exactly obtained, which is also a Ltvy-type one with Tc-dependence width; when the particle is bounded by a quartic potential, its stationary distribution has a bimodality shape and becomes noticeable with the increase of τc.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.40872170,40902077,41072196)Doctoral Program Foundation of Higher Education of China(Grant No.20090061110054)+2 种基金Jilin University's 985 Project(Grant No.450070021107)Graduate Innovation Fund of Jilin University(Grant No.20121073)Basic Research of Jilin University(Grant No.421032184424)
文摘The critical slip surface of a fractured rock slope tends to extend along the fractures.Thus,fracture orientation plays a critical role in determining the critical slip surface.Based on fracture orientation data,this paper examines the critical slip surfaces of fractured rock slopes.Given that the surface of a fractured rock slope extends along the fracture surfaces,or the wedges,with each composed of two arbitrary fractures,the critical slip surface is determined via stochastic dynamics.In addition,a fracture frequency method is proposed as a means of analyzing the critical slip surface.According to this method,the critical slip surface slips in whichever direction has the lowest fracture frequency.Based on the stochastic dynamics method and the fracture frequency method,the critical slip surface of the slope is finally determined,that is,the critical slip surface takes the form of a plane passing the slope toe with a dip of 120° and a dip angle of 45°.
基金supported by the National Natural Science Foundation of China(Grant Nos.61178067,10875013 and 11175021)the Doctoral Scientific Research Starting Foundation of Taiyuan University of Science and Technology(Grant No.20122042)
文摘The correlated Levy flight is studied analytically in terms of the fractional Fokker-Planck equation and simulated numerically by using the Langevin equation, where the usual white Ltvy noise is generalized to an Ornstein-Uhlenbeck Levy process （OALP） with a correlation time τc. We analyze firstly the stable behavior of OULP. The probability density function of Ltvy flight particle driven by the OULP in a harmonic potential is exactly obtained, which is also a Ltvy-type one with Tc-dependence width; when the particle is bounded by a quartic potential, its stationary distribution has a bimodality shape and becomes noticeable with the increase of τc.
