Research on Mining Pressure Dynamic Effect of the Large Dip Angle Working Face

In order to study the mining pressure law of the large dip angle working face, prevent the topping accident of the working face, and cause the roof accident, through the observation of the mining pressure of the working face of Xiaogou coal mine, the law of mine pressure appearance and dynamic effect of the large dip angle working face are obtained. The results show that the initial support force of the working face support is not less than 24 MPa, the lower part of the working face is larger, and the falling rock has not been effectively filled in the middle and lower part of the working face. Therefore, the daily observation of the top and bottom goaf is carried out to determine whether it is a large area of suspended ceiling appears. Taking effective measures for safe mining in a timely manner has great practical significance for reducing roof accidents.