山岳トンネル (7)

[VI-923] Development of "high-speed, high-rigidity bolt (high-high bolt) system"

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

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

High speed ,high rigidity bolt system uses high rigidity bolt for core material.This system enables high-speed drilling compared to the conventional double-pipe drilling method, so the drilling water does not disturb the ground.The combination of high-rigidity bolt and high-strength silica resin can suppress ground displacement early.In this report, we report on the field application case of the developed "high-speed, high-rigidity bolt (high-high bolt) system".