Abstract: according to the research and analysis of the relevant geological data of Ciyaogou coal mine, this paper designs the horizontal development and extension depth of coal seam 13, combining with the replacement of the mining area and the existing production system, and puts forward the extension depth scheme of coal seam 13. Through the comparison of safety, economy and technology, it is finally determined to adopt the combination of the shaft direct extension and the underground inclined shaft, that is, the direct extension of the auxiliary inclined shaft and the new main excavation The scheme of development and extension of underground inclined shaft and return air underground inclined shaft has certain reference value to the arrangement of horizontal extended roadway under similar conditions.<br>
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