抄録
In order to make clear the quantitative effects of pipe roof supports on the decrease of the ground settlements caused by tunnel excavations, centrifugal model tests have been conducted. An excavation robot is newly developed and is applied to the model tests. The robot is three-dimensionally controlled by programs and can excavate the tunnel face in arbitrary shape. Effects of the difference between the excavation methods such as the full-face-excavation and the ring-cut-excavation on the ground displacements are discussed.
