Control Technology for Broken Surrounding Rock in Main Roadway of Yuwu Coal Industry
Abstract：This paper analyzed the impact of the broken surrounding rock weak planes,water erosion,tectonic stress,a large cross-section and other factors on the surrounding rock deformation and failure of Yuwu coal industry ＋400 m level track main roadway,discussed the surrounding rock failure characteristics that track roadway two sides failure led to roof deformation,and elaborated furtherly the bolting and grouting combined control technology,in which grouting could reduce surrounding rock plastic zone of two sides and roof and anchor bolting improve self-supporting capacity of surrounding rock.The result of mine pressure observation showed that after grouting reinforced surrounding rock weak planes,in initial stage,bolt and anchor cable beard load quickly,the maximum surface displacement was about 23 mm,and the control effect was remarkable.
Keywords：track main roadwaybroken surrounding rockfailure characteristicscombined supporting of bolting and grouting
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( 49-52 )