Abstract: Combined pressure-relief blasting in the mining roadway and a high-level roadway can effectively reduce strata pressure and rockburst risk. However, the stress evolution of the overburden, surface subsidence characteristics, and their correlations with rockburst-induced dynamic loads under this pressure-relief mode remain unclear. Taking No. 8302 working face of Xinjulong Coal Mine in the Juye Coalfield as the engineering background, mechanical models for roadway-only pressure relief and combined pressure relief in the mining roadway and high-level roadway were established respectively according to the structural characteristics of deep mine with thin bedrock. An expression for estimating the front abutment pressure of the working face was derived, and the surface subsidence characteristics under different pressure-relief modes were analyzed. The rockburst mitigation effect of combined pressure relief was investigated through numerical simulation and field verification, and the coupled responses among stress distribution, surface subsidence and rockburst-induced dynamic loads were further examined. The main conclusions are as follows. ① Combined pressure relief modifies the high-level hard strata through blasting-induced pre-splitting and significantly reduces their breaking interval. Consequently, the peak stress transmitted through the bedrock decreases by 7.8 MPa, and the advance influence range of the abutment pressure is shortened by approximately 40 m. ② Numerical simulations and engineering practice show that, compared with roadway-only pressure relief, combined pressure-relief blasting destroys the integrity of the high-level thick and hard strata and reduces the periodic weighting interval. The dynamic load during periodic weighting, loads on the advance supports, and drilling cuttings volume all exhibit decreasing trends. The intensity of concentrated energy release caused by overburden movement is thereby reduced, verifying the validity of the proposed mechanical models. ③ Compared with roadway-only pressure relief, combined pressure relief increases the advance influence distance from 565 m to 694 m, while decreasing the advance influence angle from 57.7° to 52.1°. By reducing the breaking interval of the high-level key stratum, combined pressure relief transforms the overburden structure from the hard thin-bedrock structure into the weak-bedrock structure. ④ Under combined pressure relief, the variations in surface subsidence rate at different monitoring points become more gradual. The peak surface subsidence rate decreases from 50.28 mm/d under roadway-only pressure relief to 22 mm/d under combined pressure relief, representing a reduction of 56%. This indicates that surface subsidence changes from the abrupt mode to the gradual mode, thereby weakening energy accumulation in the bedrock and topsoil layer and reducing the risk of rockbursts induced by the sudden collapse of the high-level overburden. These results demonstrate the effectiveness of combined pressure relief in the mining roadway and high-level roadway for rockburst prevention. ⑤ The surface subsidence rate tends to increase before large energy microseismic events. The proportion of surface subsidence rate increasing before the occurrence of large energy events is 56.17%, indicating a pronounced coupled response between the surface subsidence rate and dynamic impact loading. Moreover, the increase in front stress at the working face precedes the increase in surface subsidence rate. Therefore, significant increases in the advanced abutment pressure and surface subsidence rate are proposed as medium-term and imminent warning criteria for rockbursts, respectively. This identification method provides a new approach for rockburst early warning.