Development and present situation of support theory and technology in coal mine roadway in China[J]. Journal of Mining Science and Technology, 2020, 5(1): 22-33.
Citation:
Development and present situation of support theory and technology in coal mine roadway in China[J]. Journal of Mining Science and Technology, 2020, 5(1): 22-33.
Development and present situation of support theory and technology in coal mine roadway in China[J]. Journal of Mining Science and Technology, 2020, 5(1): 22-33.
Citation:
Development and present situation of support theory and technology in coal mine roadway in China[J]. Journal of Mining Science and Technology, 2020, 5(1): 22-33.
Roadwaysupporttheoryandtechnologyisthecoreresearchfocusofstratacontrolincoal mine.Inthispaper,therepresentativesupportingtheoriesofroadwayaresystematicallysortedout,and thesupportingtechnologiesofroadwayareexpoundedandanalyzedindetailfromthefollowingthreeaspects:surroundingrockinside,roadwaysurfaceandcompositecontrol.Furthermore,the possible researchfocusisdiscussedandanalyzed.Themainconclusionsshowthatthesupportingtheoriessuchas NewAustrianmethod,brokenrockzone,strengthenhancementofsurroundingrockaremoremature, andnewsupportingtheoriessuchascompressionringenhancedsupporttheory,strongsupportforsidewallanduniformstrengthbeamtheoryareemerging.Thetechnologiesinsurroundingrockincludebolt (cable),groutingandpressurerelief,andsurfacesupporttechnologiesmainlyincludemasonryarch, metalsupportandconcrete-filledsteeltubesupport.Whilethecompositecontroltechnologiesmainlyincludegrouting-bolt (cable),shed-cable and grouting-shed-cable composite technology,and the new technology named full space truss and anchor coordinative support is introduced in detail.The synergisticmechanismbetweensurroundingrockandsupportingbody,newsupportingmaterialandsys tem,pressurereliefmechanismandtechnology,andmaturequantitativesupportdesignmethodstillneed tobedeeplystudiedinfuture.