Coal　bed　methane　(CBM)　recovery　and　CO2　sequestration　into　coal　seams　coupled　with　enhanced　CBM　recovery　have　been　recognized　as　an　economically　effective　and　environmentally　friendly　technology　to　improve　the　utilization　of　coal　reserves.　However,　implementation　of　CBM　and　CO2　enhanced　CBM　(CO2-ECBM)　production　involves　complex　deformation-flow　interactions　in　the　coal.　These　aspects　and　their　fundamental　understanding　remain　as　major　concerns　for　CBM/ECBM　modeling.　Increasing　interest　in　CBM　and　potentially　in　CO2-ECBM　technology　requires　accurate　predictive　modeling　to　minimize　investment　risks.　This　paper　proposed　a　deformation-flow　coupled　model　to　address　aspects　of　model　improvement.　This　model　was　developed　based　on　nonlinear　elastic　deformation　mechanics　and　gas　percolation　theory　and　implemented　using　an　established　computer　program　named　F-RFPA2D　-　2D　Flow-coupled　Rock　Failure　Process　Analysis　code.　The　numerical　simulations　of　this　model　were　carried　out　according　to　a　CO2　capture　and　sequestration　(CCS)　integrated　underground　coal　gasification　(UCG)　process　designed　for　Zhongliangshan　coal　mine　in　southwest　China.　The　individual　operations　comprising　(1)　conventional　CBM　recovery　and　CO2　sequestration　into　coal　and　(2)　the　integrated　operation　of　CBM　recovery　with　CO2　enhancement　were　numerically　investigated,　respectively.　The　results　show　that　CO2　sequestration　into　the　coal　bed　promotes　rapid　transport　of　CBM　towards　the　gas　producer　wells　with　a　longer　production　period　and　can　enhance　coal　bed　methane　recovery　by　up　to　80%　under　the　conditions　of　using　this　this　study.　©　2009.