Abstract:For the sandstone mudstone interbedded soft rock roadways support problem encountered during the tunneling process of deep level roadway in a certain Mine, analysis on its deformation characteristics were conducted, and several strategies were used to identify the reason of such deformation. The strategies consisted of rock mass investigation, rock sample swelling test, geo-stress test, loose ring theory analysis, and anchor strength test. Combining with practical experience, it’s considered that the large area of roadway deformation mainly caused by insufficient support strength sourced from poor rock condition, broken zone and high geo-stress induced by complicated tectonic compression. In view of the high efficiency of rock drilling equipment, the supporting bolt was selected, and the parameters of the bolt were calculated and adjusted by referring to the theory of Loose Ring and Composite Arch, and the main supporting scheme was determined to be resin bolt + grouting split set+ fiber reinforced wet shotcrete+ steel mesh with the bolt spacing of 1.1×1.1m and the bolt length of 2.8m. Long-term monitoring by setting convergence deformation monitoring points showed that the overall convergence of the back, side and base of the roadway were controlled at about 20-30mm, and the roadway is now basically stable.