Abstract:

In order to study the strata behaviors around the fault under the influence of mining, we produced two experimental models of similar material according to 1010 face geological conditions of Caocun coal mine. Respectively simulating working face from the foot wall and hanging wall of the fault to advance fault studied strata behavior regularity at fault zone. The results show that，when working face advanced from the fault footwall, roof stability of working face is the worse with the closer the fault, smaller periodic breaks step, and normal stress and shear stress of fault plane reaches extremes when the working face is at the fault location. When working face advanced from the fault hanging wall, roof rock fracture easily formed beam structure, and the amount of fault slip essentially unchanged, When working face passed faults, the foot wall and hanging wall of the fault occurred a significant movement, and mainly in the hanging wall along the fault side down relative slippage based.

Key words: f ault, mining effect, similar material simulation, strata behavior regularity