Evaluation of Coal Handling Roadway Stability Under the Coupling Action of Open-underground Combined Mining and Controlling Technology

Due to the Interaction and mutual influence of open-pit mining and underground mining, there is a complex dynamic coupling field. In order to solve the stability problem of coal handling roadway under the coupling action of open-underground combined mining, taking Antaibao Open-pit Mine as engineering background and FLAC^3D software as plat gram, through the stability analysis and evaluation of typical profile, the study obtained the conclusion that the left side of the roadway should be supported with shotcrete in roadway design.