山岳トンネル (7)

[VI-922] Development of "high-speed,high-rigidity bolt(high-high bolt)system"

*岩本 昭仁¹、足立 忠彦¹、水谷 和彦²、寺戸 秀和³、浅井 勉¹、安田 耕治¹、森田 篤²、櫻井 孝臣² (1. （株）カテックス、2. 前田建設工業（株）、3. （一社）日本建設機械施工施工協会　施工技術総合研究社)

Keywords:hHigh-speed, high-rigidity bolt, high speed construction, supplementary construction method, high strength improved ground

The high-speed, high-rigidity bolt system disturbs the ground by drilling water because high-speed drilling is possible compared to the conventional double pipe drilling auxiliary method by using high-rigidity bolts in the core material. The high rigidity bolt is a technology that can be expected to have a positive fixing effect and an early displacement suppression effect by combining with various injection materials. We report on the indoor model test assuming high pressure and large amount of spring water of rigid bolt (high and high bolt) system.