DOI: 10.11799/ce202506008
Collaborative pressure-releasing and reinforcement control technology for deep dynamic pressure roadway
WANG Shugang
XIONG Huaixin
SUN Lihui
LIU Liangping
BAI Zhong
LONG Yaxin
QIN Yukun
Abstract：The surrounding rock suffers from large deformation,failure of supporting structure,and repeated maintenance under the influence of the superimposed disturbance of high in-situ stress and strong mining stress on the deep dynamic pressure roadway.Theoretical analysis,rock mechanics experiment,numerical simulation,and on-site monitoring were conducted to study the law of roadway deformation and failure under dynamic pressure disturbance taking the transportation entry in the No.12805-lower working face in No.8 district of Yunjialing Mine as a case,to study the deformation and failure laws of the entry under dynamic pressure disturbance,and analyze the large deformation mechanism of surrounding rock.And a collaborative treatment scheme using roof cutting and pressure relief for the disturbance source roadway+"double shell"reinforcement for the disturbed roadway was proposed.The influence range of the lateral abutment pressure and stress transfer strength of the working face was considerably reduced after adopting the roof-cutting pressure relief.Moreover,the double shell support strengthened the rock mass and bearing capacity of the surrounding rock and reduced the deformation and damage of the dynamic pressure roadway.The field test results show that,the surrounding rock deformation was controlled within 220 mm,and the maximum stress of the bolt(cable)was 54.7%of the ultimate breaking force.The surrounding rock deformation was controlled,and the force on the bolts(cables)was within a reasonable range.The collaborative treatment scheme achieved favorable results in field application.
Keywords：mining disturbancecyclic loading and unloadinglarge deformation of surrounding rockroof cutting and pressure releasingdouble shell support
Publication Date：2025-06-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 57-66 )