Study on Cracking,Roof Falling and Instability Mechanism and Control Technology of Mine Lined Roadway in Mudstone
CAO Shuai
LIN Deng-ge
YU Xiao-chen
ZHANG Shao-qi
SUN Kai
Abstract：In order to solve the engineering difficulties of the liner cracking and large area roof falling occurred in a mine -265 m belt conveyor roadway of Xiaogang Mine ,with an analysis on the deforma‐tion failure features of the mine roadway ,the mine roadway was divided into a liner cracking roadway section and roof falling roadway section and an analysis study was conducted on the roof falling and in‐stability mechanism of the roadway. A repair and reinforcement plan with a surrounding rock bolting and grouting + backwall short tube grouting + high strength pre‐stressed yield bolt and anchor com‐bined reinforcement and support was provided.In order to verify the actual application effect of the re‐pair and reinforcement plan ,the FLAC3D three dimensional modeling software was applied to analyze the distribution of the displacement field and plastic zone after the repair and reinforcement of the mine roadway. After the plan implemented ,the deformation of the surrounding rock was basically controlled to ensure the stability of the mine roadway.
Keywords：mudstonemine lined roadwayroof falling and instabilitynumerical simulationcombined reinforcement
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 33-37 )