Basalt　Fiber　Reinforced　Polymer(BFRP)　is　graduallyused　as　bolts　in　underground　engineering.　In　order　to　study　the　shear　characteristics　of　jointed　rocks　reinforced　with　BFRP　bars,　laboratory　shear　tests　were　carried　outto　comparatively　analyzethe　shear　properties　of　bolted　joint　rocks　with　BFRP　bars　and　steel　bars,　includingshear　strength-displacement　curve,　shear　strength,　bolt　failure　characteristics　and　internal　force　changes　in　the　bolts,　andthe　influence　factors　such　as　roughness,　bolt　inclinationand　normal　strength　were　also　considered.　The　results　show　that,　compared　with　the　steel　bolts,　the　BFRP　bolted　specimens　have　a　lower　shear　stiffness,　a　larger　peak　shear　displacement　and　a　higher　residual　shear　strength.　The　BFRP　bolted　specimens　absorb　more　energy　before　the　shear　peak　than　the　steel　bar　bolted　specimens,　although　both　themabsorb　the　same　total　energy　and　exhibit　toughness　in　the　shear　process.　The　shear　strength　of　the　BFRP　bar　bolted　joint　rocks　is　greatly　affected　by　the　inclination　anglewith　alowershear　strength　when　the　inclination　angle　is　equal　to　90°.　When　the　inclination　angle　is　reduced　to　less　than　60°,　the　BFRP　bolted　specimens　have　a　higher　shear　strength　than　the　steel　bar　bolted　specimens.　The　shear　failure　characteristics　of　BFRP　bolted　joint　rocks　can　be　categorized　as:　resin　matrix　fracture,　shearing　of　both　resin　matrix　and　fibers,　and　fracturing　of　resin　matrix　and　surrounding　rock.　When　the　BFRP　bars　fail,　there　is　no　obvious　plastic　yield.　The　resin　matrix　frequently　breaksunder　a　small　shear　displacement,　while　the　fiber　is　able　to　resist　a　large　joint　dislocation　which　improvesthe　contribution　of　the　normal　stress　to　the　shear　strength.　Based　on　the　strain　monitoring　data,　the　contribution　rates　of　the　axial　force　and　shear　force　from　the　BFRP　bars　and　the　steel　bars　to　the　shear　strength　werequantitatively　analyzed　atan　inclination　angle　of　60°.　It　was　found　that,　compared　with　the　steel　bars,　the　axial　force　ofthe　BFRP　bolts　increasesfaster　under　the　same　shear　displacementand　there　was　a　greater　contribution　from　the　axial　force　to　the　shear　strength.　©　2022,　Science　Press.　All　right　reserved.