The role of the physical properties of grout and operational grouting conditions on grout pressures over tens of metres behind a TBM is quantified. For that purpose the transition from plastic flow of the grout behind a TBM to fixation of the tunnel lining by hardened grout further behind the TBM has been calculated numerically. Account is given to the rheology of the grout, hardening of the grout, consolidation of the grout, mechanical properties of the soil and movement of the tunnel linning behind the TBM. As an example the influence of hardening and consolidation of grout is quantified for Sophia Rail Tunnel. Recommendations are given regarding the use of grouts.
LOKASI:
Ruang Koleksi Umum
Rak: 2