不連続岩盤中の坑道の変形および破壊状態について

坑道断面の収縮に関する基礎的研究 (第2報)

抄録

When a mine roadway is driven in discontinuous rocks, it may be expected that the stability of the roadway will be diffrent from that driven in continuous rocks.
The effects of horizontal discontinuities on deformation and failure of a roadway were studied with both the Finite Element analyses using the joint element and scale model tests using a sand-plaster mixture as a model rock.
The results from the FEM analyses and model tests showed that the state of deformation and failure of a roadway driven in discontinuous rocks is much affected by the behaviour of the discontinuities which depends on the properties of the rocks themselves, the primitive stresses (applied pressures) and the properties of the discontinuities.