Abstract: Based on geological occurence characteristics and mining technical conditions of 4-1 coal seam in Shadunzi coalmine, this paper analyses the applicability of slice mining, large cutting height mining, and fully mechanized sublevel caving, and summarizes their advantages and disadvantages. Fully mechanized sublevel caving is selected, and top coal caving properties are analysed. According to code requirement, main equipment selections, such as hydraulic powered support, coal mining machinery and scraper conveyors, are calculated. Mining practice proves the rationality of fully mechanized sublevel caving and equipment selections, which makes much contribution to high production and high efficiency modernization coal mine pattern，and provides important reference for 4-1 coal seam exploitation in Sandaoling mining area.