DOI: 10.11799/ce202312014
Stability control of surrounding rock in whole life cycle of gob-side entry retaining at unilateral working face
CHEN Daguang
Abstract：In order to study the deformation and failure law of surrounding rock of gob-side entry retaining at unilateral working face,taking the W2306 and W2307 working face of Gaohe Coal Mine as the background,the deformation and failure law of surrounding rock at the three stages of excavation,entry retaining and reuse of unilateral double entry retaining are studied using theoretical analysis,numerical simulation and engineering measurement.The research results show that,in the excavation stage,the surrounding rock deformation and stress change basically symmetrical along the roof center line;during the entry retaining stage,the entry is affected by the advance abutment pressure,stability of the entry at this stage is the most damaged,and the plastic deformation of the surrounding rock is the largest;in the reuse stage,the balance of retained entry suffers secondary damage,which gradually decreases and disappears at a certain distance behind the working face.
Keywords：district coal pillarstability of coal pillarsurrounding rock stressplastic zone distributionroadway reuse
Publication Date：2023-12-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 78-84 )