Abstract: Grouting at shield launching shaft and shield arriving shaft is the key points in the shield tunnelling in soft and waterrich stratum in Tianjin. The construction technology of advancing horizontal grouting of shield tunnel in soft soil is presented. The advancing horizontal grouting technology is proved to be suitable for soft rock in Tianjin by means of process control of grouting at the shield launching shaft and shield arriving shaft and sample testing on grouting effect. 

Key words: advancing horizontal grouting, reinforcement, shield shaft, soft soil, shield launching, shield arriving