This paper focuses on the following topics: (1). development and practical application of numerical modelling capabilities to investigate methods of improving coal recovery related with underground coal mining;(2). some treatment skill such as rock mass failure treatment, model calibration requirements, etc.; (3). comparison between results of modelling and underground monitoring. Application shows that numerical modelling is a useful tool for investigation of many coal mining design problems, in both maor and minor roles. Modelling can be used as an integral part of mine planning and the solution of mining problems This paper focuses on the following topics: (1). Development and practical application of numerical modeling capabilities to investigate methods of improving coal recovery related with underground coal mining; (2). Some treatment skill such as rock mass failure treatment, model calibration requirements , comparison between results of modeling and underground monitoring. Application shows that numerical modeling is a useful tool for investigation of many coal mining design problems, in both maor and minor roles. Modeling can be used as an integral part of mine planning and the solution of mining problems