A　new　damage-plasticity　constitutive　model　which　takes　account　of　the　effect　of　confining　pressure　and　strain　rate　on　the　strength　and　post-peak　behaviour　is　proposed　for　rock　subjected　to　dynamic　loading.　The　model　treats　the　compressive　and　tensile　damages,　both　related　to　plastic　and　volumetric　deformations,　separately.　The　strain　rate　effect　is　considered　by　incorporating　a　newly　developed　dynamic　increase　factor　formula,　which　reflects　the　pure　rate　sensitivity　of　rock,　into　the　yield　surface　via　radial　enhancement　approach.　Fractionally-associated　flow　rule　and　lode-angle　dependency　are　employed　to　capture　the　shear　dilation　behaviour　of　rock.　The　new　model　is　then　implemented　into　LS-DYNA　via　a　user　defined　material　subroutine　to　simulate　the　mechanical　response　of　rock　under　various　loading　scenarios　including　triaxial　compression,　direct　tension,　Split　Hopkinson　Pressure　Bar　compression,　oval-nose　projectile　penetration　and　explosive　blast　action,　reported　in　literature.　The　robustness　and　accuracy　of　the　new　model　are　demonstrated　by　validating　against　available　experimental　results　and　by　benchmarking　with　the　reported　simulations.