Research on Pressure Relief Effects of Protective Layer Under the Conditions of Coal Seam Group Mining
Abstract：With the advancing of working face, the deformation of overburden, caving and underlying rock movement and expansion will be caused by coal seam mining, which damages the original stress equilibrium around the mining space, and leads to the stress redistri- bution. Different stress and strain fields was generated in the roof and floor, which produces different damage to the roof and floor rock, and generates different pressure relief effects to. protective layer. A simulation research on coal seam group mining is carried out to ob- tain the laws of stress change and deformation of overlying and underlying rock by the FLAC3D software.
Keywords：coal seam group miningliberated seampressure - relief effectnumerical simulationmovement and deformation laws
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 14-16 )