DEVELOPMENT CHARACTERISTICS OF SEAM SLIDING ZONE IN FAULTED BASIN AND AHALYSIS OF ITS REPEATED REDEFORMATION IN UNDERGROUND MINING

Seam sliding zones are commonly found in faulted depression basins in Nor th China and become the important factors influencing the stability of their s urrounding rockmass in underground miningworkings. Taking mining areas in weste rn Shandong as examples, this paper discusses development characteristics of sea m sliding zone and its formation mechanism, analyses its repeated deformation u nder the conditions of excavation and operation, and points out some problems to which should be paid attention during roadway designing and maintaining near th e seam sliding zone.