DOI: 10.11799/ce201711014
Damage evolution law and control technology of soft rock roadway under mining influence
MENG Yi
Abstract：Aiming at the deformation and supporting failure of 500 level roadway in Caocun Coal Mine,the key factors for roadway damage were analyzed,the instability mechanism of roadway surrounding rock and plastic zone evolution law were studied through the comprehensive methods of theoretical analysis,numerical simulation and field measurement.The results showed that,the influence of adjacent mining face played a main role in the deformation and failure of the 500 level roadway.The plastic zone of the roadway changed from circular to oval under the influence of mining stress,and the plastic zone in two sides extended to the deep part.Under the compression effect of high stress,the plastic zone in roof and floor shrank.The scheme of " rib deformation control before floor deformation control" was put forward on this basis.After the implementation,the deformation of the roof and floor reduced from l000mm to 103mm,and the relative displacement of two sides reduced from 1200mm to 113mm.Rock fractured range increased,but not beyond the anchorage range of bolt (cable) under the mining influence,the roadway surrounding rock deformation was effectively controlled.
Keywords：soft rock roadwaymining influenceplastic zone evolutionremediation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 50-54 )