Numerical Simulation Research on Two-sides Grouting in Floor Heave Control
LI Chuansen
ZHAO Jianzhong
WANG Lei
Abstract：By taking air-return way of 2205 working face in Zhangcun Mine as the test background and through the analysis on the failure relation between roof,floor and two sides of the air-return way and the coal Pillar,it was found out that the mining influence of 2203 working face was the main factor causing the roadway floor heave,and this floor heave was the extrusion flow tyPe. Based on the actual situation of the roadway,the solution of aPPlying two-sides grouting for controlling the roadway floor heave was ProPosed and numerical simulation was made with FLAC3D software. The results showed that the amount of the roadway floor heave,the roof convergence and the disPlacement of the roadway sides after the two-sides grouting was resPectively 25 cm, 55 cm and 14 cm,reduced by 78. 4%,24. 7% and 71. 4% as comPared to that in the original state,and the roadway floor heave was under effective control.
Keywords：roadway floor heavetwo-sides groutingnumerical simulation
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( 36-39,43 )