In a shallow-buried coal mine, the original support scheme of large crossheading has features of excessive strength and resource waste. Firstly, various optimization schemes are obtained through permutation and combination, and verified through numerical simulation. Additionally, under the premise of ensuring safety and economy, the optimal scheme is determined as A3B3: For the roof support, there are 5 rockbolts in each row, with spacing of 1100 × 1000 mm. Row-spacing between anchor cables is 2200 × 2000 mm. There is 1 bolt per row for each sidewall, 1050 mm from the roof and with the spacing of 1400 mm. In order to study the evolution of lateral abutment pressure during the dynamic load stage, FLAC3D was applied. The plastic zone range from coal seam excavation to model equilibrium is analyzed. Finally, the rationality of the design is verified by analyzing the observed of borehole television and roadway displacement.
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