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List of products by author: T. Okabe
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Displacement Control Effect of the Ground in front of the Main Tunnel Face with the Drift Using High Rigidity...
Abstract: The fragile Nichinan Group is distributed in southern Miyazaki Prefecture, Japan. The Higashi Kyushu Expressway Yoshinomoto Tunnel is a two-lane tunnel with a length of 1,880m, which is planned in this fragile Nichinan Group. The authors applied Center Drift Advancing method using the drift with high rigidity support to the Yoshinomoto tunnel. As a result based on the measurement at the time of...
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Performance of rock bolt with differe nt material by on-site and model experiments
Abstract: Although the tensile and shear resistance performances of rock bolts have been extensively studied, other performance measures such as compression and erosion resistance are required to be examined. Various types of rock bolts have been developed recently; however, owing to the lack of experience in tunneling and data on the use of support members in design and construction, it is difficult to...
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