Abstract: Based on the special geological conditions of the steep inclined coal seam in the Chicheng Coal Mine of Huamei Group, the use of downward construction in the 1502-2 working face has led to many difficulties and problems in coal transportation, material transportation, pedestrian safety, top and bottom plate safety, and anti slip and anti slip. Especially, the installation of winches, laying of tracks, dumping and overturning of cars, and switching of mining cars are required for coal discharge and material transportation, which are extremely complicated processes; The manual loading of coal by mining trucks is labor-intensive, and the support for coal discharge and transportation cannot be continuously operated in parallel, resulting in extremely low construction efficiency; In addition, it is highly likely to occur when lump coal, materials, and tools fall off, and equipment falls and falls, causing injury to people, posing a high safety risk. In order to achieve safe and efficient construction, through careful analysis and repeated argumentation of the difficulties encountered during the construction process, an innovative construction plan has been developed for the expansion and brushing of the large angle open cut hole from top to bottom, using a "anchor mesh cable+single hydraulic prop+wooden pile" full section joint support. The optimized 40T scraper conveyor for coal mining is used for coal discharge, and the monorail crane trolley for coal mining is used with a slow winch for auxiliary transportation, The use of metal mesh combined with individual hydraulic props to block and isolate the entire section of the three channels for coal, material, and pedestrian transportation has achieved an increase of over 35% in single entry, shortened the construction period by over 20 days, and effectively alleviated the tense situation of mining and excavation continuity; Moreover, the working environment has been improved, the labor intensity of workers has been greatly reduced, and the safety and economic benefits are very significant.