Abstract:With the popularization and application of tunnel boring machine (TBM) in the rock roadway excavation of deep coal mines, the bad formation had become the main factors that influence the safety and working efficiency of TBM excavated deep-buried coal mine roadways. To solve the problems of supporting TBM excavated coal mine roadways in undesirable grounds, the fabricated support structure for TBM excavated coal mine roadways was proposed and the full-scale models of fabricated support structure were manufactured. The Full-scale loading tests of the supporting structure under different lateral pressure coefficients were carried out to study the deformation and failure form, bearing capacity, and strain distribution characteristics of the prefabricated roadway support structure, the influencing factors of the supporting structure bearing capacity were determined and the failure mechanism of the support structure was revealed. Moreover, numerical tests of support structures were conducted to obtain parameters such as axial force and bending moment that were difficult to be monitored in experimental tests. The partial failure first appeared at the segment joints and the middle portion of the segments, which in turn led to the overall instability of the structure. When the lateral pressure coefficient λ=1.0 and 1.5, the ultimate bearing load of the support structure was 3972.2 and 2763.2 kN, respectively. With the increase of the lateral pressure coefficient, the bearing capacity of the support structure decreased exponentially, and the deformation and failure of the structure became more obvious. The ultimate bearing capacities of the supporting structures in the mechanical test were slightly smaller than that of the numerical tests, and the results of the mechanical test and the numerical test were in good agreement. In the uniform load test, the axial force at the joints of the supporting structure was relatively large, the bending moments at the mid-span of the joints and segments were large, and the bending moments were positive. In the non-uniform load test, the axial force of the supporting structure was slightly reduced. The bending moment values were both positive and negative, and the bending moment was higher than that of the uniform load test.