山岳トンネル(9)

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[VI-1294] An Example of Construction Management in Unconsolidated Sandstone Where Expected Anchorage Strength of Rock Bolts Cannot Be Achieved

*Dohta Awaji¹, Norihiro Mitsunaga¹, Ryo Hemmi¹, Naoki Kandou¹, Tomofumi Yokoyama², Yuki Tsukamoto² (1. Shimizu Corporation, 2. East Nippon Expressway Company Limited)

Keywords:

mountain tunnel,rock bolt,unconsolidated ground,internal pressure of support