关键词: 高应力, 软岩, 流变, 围岩注浆

Abstract: Aimed at the rheological problems of soft rock roadway with high ground stress，rheological equations for plastic zone and elastic zone has been established which is based on Bingham rheological model．Rheological radius and stress of surrounding rock were both derived by the different time．In order to analyze the influencing factors，such as ground stress，roadway radius，support strength，grouting and so on，the -545 m south track roadway in Suntuan mine of Huaibei Mining Group was taken as a case study. The results show that rheological process of roadway surrounding rock has three stages such as rapid growth stage，slow growth stage and stable stage. As time goes by，rheology range of surrounding rock gradually extends to the deep，and the shallow stress decreases. As a result，the stress peak continuously transfers to the deep. The rheological radius increases when the ground stress or roadway radius increases. The rheological radius decreases when support strength increases. Roadway grouting can improve surrounding rock’s anti-rheological properties，which is tested by the numerical calculations and measured data in the testing field．

Key words:  , high ground stress；soft rock；rheology；grouting