The study looked at how mining stress affects coal mining faces with soft roof, soft coal, and soft floor. By measuring stress on-site and using computer simulations, researchers found that the pressure on support structures decreases within 0-12 meters in front of the mining face, increases from 12-40 meters, and stabilizes beyond 40 meters. Lateral support pressure decreases within 0-14 meters, increases from 14-36 meters, and stabilizes beyond 36 meters. The analysis showed that the air return gateway in a specific coal mining face failed due to increased lateral support pressure caused by mining in the above seam.