关键词: 薄煤层, 大落差断层, 超前预裂爆破, 能量导向, 参数优化

Abstract: To address constraints imposed on coal mining due to large-difference fault structures， based on the intelligent fully-mechanized mining face of 2618 thin coal seam in Xinwen Mining Area as the engineering background，a deep-hole pre-split blasting fault treatment technology system was pro⁃ posed. The 2618 working face was selected as the demonstration project for thin coal seam intelligent appli⁃ cation，as its geological conditions were relatively complex and the fault drop difference reached 5 meters. The traditional relocation and skipping mining method had problems such as frequent process transitions and low coal resource recovery rate. Through systematic research on the blasting hole charge structure，un⁃ coupled charge technology and sealing parameter optimization，a "pre-split cracking - energy guidance - block size control" three-in-one technical solution was constructed. Field tests showed that this technology reduced the blasting rock particle size distribution coefficient to below 1.2，increased the development den⁃ sity of the fracture zone by 45%，effectively reducing the cutting load of the coal mining machine; and the equipment passage rate during passing through the fault increased by 60%，the daily coal recovery in⁃ creased by 10 t，and the problem of triangular coal retention caused by traditional processes was avoided. The research results provided key technical support for the intelligent mining of thin coal seams under com⁃ plex geological conditions，and the blasting parameter design method and process coordination control mode had industry promotion value.

Key words: thin coal seam, large-difference fault, pre-cracking blasting, energy oriented, parame? ter optimization