Paper Title
Effects of Overburden Mechanical Properties on Subsidence Characteristics

Numerical analyses is using Phase 2.8 program performed study the effects of overburden properties and opening depth on the subsidence configurations under sub-critical condition. The computer simulation results indicate that the maximum subsidence decrease with increasing roof thickness. The maximum subsidence is constant if the roof thickness-to-opening width ratio are more than 0.4. The trough width decreases with increasing elastic moduli of overburden and decreasing opening depths. Keywords - Surface Subsidence, Trough, finite element, overburden stratum