TBM施工情報に基づく拡幅トンネル支保パターン予測と実績

第二名神高速道路鈴鹿トンネル上り線の事例

抄録

This paper shows the enlarged tunnel supports prediction based on TBM-driven pilot tunnel data and shows its result. The collected data for prediction analysis are the TBM machine data, the observed geologic data and the TBM tunnel construction records. The applied tunnel is Suzuka Tunnel that is wide section for new expressway constructed between Mie Pref. and Shiga Pref. in central Japan. Its geology consists of granite and sedimentary rocks. As a result, the ratio of tunnel supports agreement length is 81% at present. This shows that the TBM-driven pilot tunnel data can be extremely available for wide tunnel construction.