Research on deformation characteristics of strong expansive soft rock roadway and its control strategy
ZHANG Xiangdong
LI Jun
LIU Jiashun
PENG Wei
Abstract：The strong expansive soft rock roadway supporting engineering of Hougqingliang coal mine was researched to solve the supporting difficulties of strong expansive soft rock roadway.The deformation characteristic of strong expansive soft rock roadway was researched according to theoretical analysis and field survey.The elastoplastic numerical simulation model of strong expansive soft rock roadway was established by using MIDAS/GTS.The plastic areas,stress distribution,surface displacement,stress characteristics of bolt and steel bracket were analyzed when using the anchor net spray frame combined support system.The deformation change law of this surrounding rock was obtained by field test.The results show that the combined supporting system composed of U-steel and anchor net spray will greatly enhance the stiffness of supporting structure,self bearing capacity and stability of rock.
Keywords：strong expansive soft rockroadwaybulking deformationanchor net spray frame supportMIDAS/GTS
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 493-500 )