Using normal and shear rigid coefficients of intact rock and fracture plane,rigidly normal, shear equivalent rigid coefficients of fissure rock mass are conduct
Let G be a graph, k 1 , …, km be positive integers. If the edges of graph G can be in graph Gand | E(H) ∩ E(Fi) | = 1 for all 1 ≤ i ≤ m, then we can call th
A symplectic mapping is studied carefully. The exponential diffusion law in developed chaotic region and algebraic law in mixed region were observed. An area wa