Research on Deformation Failure Mechanism and Control Technology of Soft Coal Roadway in Yuwu Coal Mine
LI Shugang
CHENG Xiaoyu
LIU Chao
ZHANG Tianjun
XING Lijie
WANG Hui
Abstract：The air intake of S2206 working face in Yuwu Mine is located in the soft coal seam with high strata stress, the roadway surrounding rock is easily deformed and fractured. In order to control the stability of the roadway surrounding rock and ensure the safe and smooth driving of the roadway, the deformation and failure characteristics of the roadway were analyzed by using the universal distinct element code ( UDEC) , and the support countermeasures and scheme suitable for the roadway in the soft rock and coal seam were finally obtained, in addition, the site implementation and effect monitoring were carried out. The numerical calculation results showed that the caving or slip of local“key block” of the roadway surrounding rock would cause the instability of other parts of the roadway. The site monitoring results indicated that after adopting this support scheme, the deformation of the roadway surrounding rock was in the controllable range and it can ensure the long-term stability of the roadway.
Keywords：soft rockcoal roadwaydeformation failurenumerical simulationsurrounding rock control
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 21-25 )