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[III-83] Fundamental experiments on mechanical performance of rock bolts of different materials

〇Yuto Goto¹, Takuma Matsumoto¹, Nobuharu Isago¹, Satoshi Morimoto², Maeda Kouki², Dohta Awaji³, Tadashi Okabe⁴ (1.Tokyo Metropolitan University, 2.Public Works Research Institute, 3.Shimizu, 4.kfc)

Keywords:tunnel, rock bolt, pull-out performance, loose, Model experiment

Fundamental experiments on mechanical performance of rock bolts of different materials.In this study, a model experiment was carried out in which the size of the loosening area and the anchoring area was changed in order to clarify the performance index other than the tensile strength.As a result, it was confirmed that there is a possibility that a compressive force may be generated in the ground where settlement is not expected.