Support Method of Dynamic Pressure Roadway in Inclined Seams of Xiangshan Mine

The support method of the dynamic pressure tunnel with inclined seams is a difficult problem in the mine project.Aiming at the reasonable support design of dynamic pressure roadway at 22140 working face in Pingmei Group Xiangshan mine inclined seams,the roof range of surrounding rock loose circle is generally larger than floor by testing the surrounding rock loose circle firstly.Numerical simulation analysis of rock stress changes under mining is done and the result shows that the stress increase value in middle part of roof is the biggest.Comprehensive analysis of the results show that the key of controlling dynamic pressure roadway deformation in inclined seams is to design the asymmetry of rock stress distribution,which gives the reasonable support scheme of 22140 roadway face.On-site monitoring results show that support scheme can keep the safety of roadway in mining process.