Abstract: For large inclined thin coal seam mechanized mining degree and low production efficiency in mining thick thin cast, developed with anti-skid function of short fuselage, low fully mechanized mining three machine equipment and its key technology, and complete the engineering practice in Leigong Mountain coal mine Guangneng corporation. The practice results show that the research of manufacturing three machine equipment supporting reasonable key technology to improve the reliability, the monthly yield reached 30 thousand T, to achieve a large angle of thin seam fully mechanized caving angle less than 45 degrees, the thickness is less than 1m.

Key words: Large dip angle, thin coal seam, fully mechanized mining, equipment matching, mining technology