Influence of Stope Immediate Roof on Periodic Weighting Distance
GU Shuancheng
LI Jinhua
HUANG Rongbin
Abstract：By regarding the immediate roof as the deformable medium and based on the compatible deformation mechanism of the immediate roof and main roof, a mechanical analysis model was established, and the functional relation between the periodic weighting distance of the main roof and the parameters of immediate roof was derived under the given deformation condition of the main roof. Analysis was carried out on the graphs showing the relationship between the periodic weighting distance of the main roof and the elastic modulus, thickness and internal friction angle of the immediate roof, the results showed that the periodic weighting distance of the main roof increased with the increase of the thickness or the elastic modulus of the immediate roof and decreased with the increase of the internal friction angle of rock; the thicker the immediate roof, the faster the changing rate of the periodic weighting distance of the main roof; the influence amplitude of a parameter of the immediate roof on the periodic weighting distance of the main roof was affected by other parameters, but the influence trend would not change significantly.
Keywords：immediate roofperiodic weighting distancemain roofmechanical analysis
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 34-37,41 )