The study examines how the stability of support structures in coal mines is affected by hard rock above them. By analyzing an actual coal mining face, researchers found that factors like the depth of rock, its thickness, and other geological conditions greatly impact support stability. They discovered that blasting the rock before mining can help reduce the pressure on the support structures. The study suggests a specific cutting plan for rock blasting, showing that this method can decrease the force on the support structures significantly. In a nutshell, pre-splitting hard rock can improve the safety and stability of fully mechanized coal mining operations, especially when dealing with challenging geological conditions.