Model test system for soft and broken surrounding rock tunnel based on excavation compensation method

Abstract

The utility model provides a kind of weak broken surrounding rock tunnel model test system based on excavation compensation method, base inside is supported with the transparent simulation box by hole bottom plate, multiple broken surrounding rock simulation bodies are filled in simulation box, anchor rod and / or anchor cable are equipped on multiple broken surrounding rock simulation bodies;Triaxial dynamic loading system applies dynamic pressure to multiple broken surrounding rock simulation bodies;Double gradient grouting system is assembled in base bottom, real simulation tunnel construction disturbance, grouting reinforcement and support synergistic effect high simulation indoor test platform, solve traditional model test in grouting path control inaccuracy, support response process loss and multiple physical field monitoring incomplete and other technical problems, can be in indoor environment Real simulation coupling evolution process of tunnel surrounding rock and support structure in complex broken stratum, with Structure is reasonable, function is perfect, test repeatability is strong and other advantages.

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