Abstract: In view of the technical problem of rib spalling when coal face crossing the reversed fault, based on geological and mining conditions in 3204 working face of Zouzhuang coal mine, violent and gentle movement areas of overburden strata with high pressure influenced by reversed fault were studied by using numerical simulation and field measurement, and the characteristics of fault activation advanced coal face and rib spalling around fault was revealed. In addition, according to field measurements of support resistance in higher and lower pressure areas of reversed fault, the pre-reinforced distances for Reversed Fault JF23, JF21 are about 22 m, 34 m respectively, which is consistent with the numerical simulation results. Moreover, by installing scalability beam in hydraulic support, the technical problem of rib spalling was solved effectively. The results provide theoretical basis for pre-reinforced distance determination and support adaptability evaluation when face passing through reversed fault zone.

Key words: reversed fault, overburden movement, numerical simulation, high-pressure zone