Grouting Reinforcement Support Technology of Soft and Weak Coal Sides in Large Section Roadway
YANG Ren-shu
XUE Hua-jun
GUO Dong-ming
LI Tao-tao
HE Tian-yu
GAO Zong-ming
Abstract：In order to solve problems of serious strata behaviors and deformation of roadway in Shuguang Mine,the paper studied the stabil-ity of roadway by optimizing grouting parameters and used the combined support of anchor cable and grouting with deep and shallow holes to support weak coal sides of roadway. The results showed that grouting reinforcement in weak coal sides could promote the broken sur-rounding rock to form a whole structure,and improve the self-bearing capacity and reduce the bearing pressure of roadway roof.The grou-ting combined with deep and shallow holes could close the shallow surrounding rock and form effective tension point of anchor cable in deep surrounding rock.The roadway deformation of grouting in two sides decreased about 50% compared with grouting in one side and de-creased about 85% compared with original support method.It could control the global deformation of roadway surrounding rock.
Keywords：strata behaviorweak coal sidesgrouting reinforcement supportbroken surrounding rock
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：4( 1-4 )