Distribution Characteristics Analysis of Advanced Abutment Pressure at High-grade Conventional Coal Face

Aiming at problem of severe strata behavior caused by mining affecting at high-grade conventional coal face. Rock pressure monitoring and roadway deformation were carried out at intake and return airway of 15031 working face in Jiaoxue No.3 Coal Mine. The working resistance of single hydraulic prop and the surrounding roadway rock deformation laws at measuring points were analyzed combined with the results of computer simulation, which is used to point out the cause of severe strata pressure and determine the form and range of advanced support.