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