In order to explore the safe and stable mining of thick weathered coal seam,starting from the perspective of the support technology of the back-mining roadway,we optimize the design of the support technology for the risk problems in the mining of thick weathered coal seam in a coal mine,mainly in the form of"straight-wall arch"cross-section of the full-anchor cable support for the support operation.From the actual application test results,the tunnel support technology for thick weathered coal seam has certain technical advantages and feasibility,and is expected to have certain application value in the future similar scenarios.