Analysis on Ground Subsidence in Underground Mining
Analysis on the characters of ground subsidence of Yangjiaping mining area, with same excavation depth and recovery coefficient, the numerical simulations to nonlinear large deformation using finite-difference method(FLAC) are achieved on the different strip extraction schemes that adopted different mining and reservation width. The result indicates that the subsidence values and horizontal deformation increases with the increasing of the strip extraction width on condition of the same recovery rate. Based on probability density function (PDF) method, the relationship of the coal pillar width, the mining width and ground deformation is acquired, which is some useful reference for using the strip extraction method to control the surface movement and deformation.
X. X. Liu and X. Z. Wang, "Analysis on Ground Subsidence in Underground Mining", Advanced Materials Research, Vols. 383-390, pp. 2201-2205, 2012