岩盤の変形性に関する理論的研究
岩盤の変形性の評価法に関する基礎的研究 (第1報)
1985 年 101 巻 1173 号 p. 699-705
詳細
1985 年 101 巻 1173 号 p. 699-705
This paper discusses the theoretical treatment of rock deformability by using the crack model.
In the present analysis, discontinuities in rock are assumed to be represented by elliptic-plate-cracks. Two crack cases are analyzed, one is open crack and the other is closed crack.
Expressions for effective compliances of material with a single isolated crack are given as shown in eq.(6) and eq.(15). The effective elastic moduli of material with randum oriented cracks are analyzed by using the self consistent method and expressions for them are shown in eq.(17), eq.(19) and eq.(20).
For an application of this theory, the relationship between the rock elasticity and Rock Quality Designation are discussed.
In estimating rock deformability, the density ratio of open-cracks to closed crack shares the important role with other factors, namely, the total crack density, the crack geometry and the frictional coefficient.
