Abstract: The high gas (prominent) mining area in Hunan Province is selected,its geological background,sedimentary environment and cosedimentary structure during coal accumulation are analyzed,combine coalforming gas accumulation conditions,gasbearing properties and physical properties of coal reservoirs are discussed,and coalderived gas resources is identified.The selection of favorable blocks for surface extraction is done and its applicable conditions are studied,the determination of key extraction blocks is done,the development of coalderived gas extraction mode and development and application planning in high gas mines are conducted,so as to provide theoretical basis and development and utilization direction for coal gas exploration and utilization in Hunan Province.

Key words: Coal gas, Focus blocks, Extraction and utilization, Potential analysis