Analysis and Reinforcement Technology of Mine Rock Roadway Deformation Under Seam Floor with Soft Roof,Soft Coal and Soft Floor
Abstract：Due to the mine rock roadway with rock material lined arch support under the seam floor with soft roof,soft coal and soft floor easy to be deformed,in order to effectively control the deformation value of the mine soft rock roadway and reduce the maintenance numbers of the mine roadway,with the physical and chemical property analysis on the surrounding rock in-150 m level water drainage sump chamber and the analysis on the geological structure,previous support mode and mine roadway failure features,the major causes of the mine roadway stability lost were analyzed.Based on the loosing ring support theory of surrounding rock in the mine roadway and the support principle of the soft rock engineering,the combined reinforced technology with bolt/steel mesh/anchor ＋ shotcretting/backwall grouting ＋ yield U type steel support suitable for the soft rock roadway was provided.During three months continued monitoring and measuring,the max convergence between the two sidewalls of the roadway was 37 mm and the max convergence between the roof and floor was 52 mm.The combined reinforced technology could effectively control the deformation of the mine soft rock roadway.
Keywords：mine soft rock roadwaysurrounding rock deformationbackwall groutingcombined reinforcement
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：4( 17-19,59 )