Stability Control Technology of Compound Roof Mining Roadway
The composite roof strata are prone to different deformations between different layers,resulting in reduced bonding force and easy delamination failure in actual production.By using anchor bolt(cable)support,the mechanical state of the surrounding rock can be changed and the deformation of the surrounding rock can be effectively controlled.Taking Sihou Coal Mine in Shanxi Province as the research background,the stability control technology of composite roof mining roadway was studied using theoretical analysis,numerical simulation,on-site monitoring and other methods.By comparing the stress variation curve of the anchor bolt,it can be seen that the selected support method can effectively control the deformation of the surrounding rock;evaluating the current status of anchor support under dynamic pressure conditions of the return air channel,in order to optimize the support scheme and provide theoretical basis for the design of the inlet and return air channel support schemes in the lower section of the working face.
composite roofmining roadwaysurrounding rock deformationnumerical simulationanchor bolt(cable)
NETL
NSTL
万方数据
维普
