Method of mining single steeply-inclined thick coal seam

A system for mining a single steeply inclined thick coal seam, comprising a roadway arrangement system, a supporting system, a transportation system and a ventilation system, wherein,

• the roadway arrangement system is formed by a transport crossheading and a district rise, the transport crossheading is arranged at a floor of the thick coal seam and the district rise is obtained by connecting both sides of the coal seam;
• the supporting system comprises a top-coal caving hydraulic support, a single hydraulic support, a hinged top beam, an anchor bolt and a metal net, the top-coal caving hydraulic support is located in the transport crossheading, a roof in the roadway is supported by disposing an anchor bolt with protection provided by a disposed metal net, and advanced temporary supporting is completed in cooperation with the single hydraulic support and the hinged top beam located in front of a working surface;
• the transportation system comprises a scraper conveyer and a belt conveyer, and a head of the scraper conveyer is overlapped with a tail of the belt conveyer;
• and
• the ventilation system comprises a return air channel, the return air channel is close to a coal seam roof side that is behind the top coal caving hydraulic support and in a gob, the return air channel is used to allow dirty air washing the working surface to enter a return air rise in the district rise.