MECHANISMS AND KEY TECHNOLOGY OF RECTIFICATION AND REINFORCEMENT OF STRUCTURE BY GROUTING

This paper discusses mechanisms and technical parameters of structure reinforced by grouting with an engineering case study.Jet grouting parameters and their influence on the design parameters such as grout grading,layout of grouting holes,grouting depth,grouting capacity and grouting pressure were discussed.Importance of dynamic control during the construction was emphasized.Monitoring results and analysis show that the two-shot grouting combining complementary jet grouting was effective and feasible way to rectify and reinforce a non-uniform settlement building.