Research on stability control technology for roof excavation with super large cross-section cutting hole

Taking the 8.0 m high cutting hole excavation of the 22411 large mining height fully mechanized mining face in the fifth panel area of the 22nd coal mine in Bulianta Coal Mine as an example, the empirical formula is used to calculate the roof anchor and anchor support parameters of the large cross-section roadway before excavation. At the same time, the safety type of the support parameters is demonstrated using the comparative method of similar geological conditions. During excavation, real-time monitoring of mining pressure and full process tracking and observation of wood point signals are used to achieve full process control of roof stability and ensure safe excavation of super large cross-section roadways.