According to the coal mine drilling and geological data,using sign-law,paleontology law,rock coal characteristics and combining with coal quality and physical characteristics,the main mining coal seam in Lianshao coalfield measuring water coal system are compared.

The Lower Carboniferous Ceshui and Upper Permian Longtan coal series are most important in Southeast China, and can both generate and bear gas greatly in the Lianyuan coal basin, Central Hunan, China.

2 coal mine of the Hongshan coal field according to the geological settings,drilling equipment and technique,and treatment methods used for solving problems encountered,which would be of referential significance for coal exploration and drilling.

The formation and harm of spontaneous combustion in coal field are generally described.

Transient Electromagnetic Method can be used to prospect the complex geological situation of water rich coal fields.

Comparison of coalfields and coal-mining geological conditions of the main coal-producing countries in the world;

Specialization of electromagnetic instruments for coalfield hydro-geological exploration;

Discussion on Coal Quality and Market Direction of Xingxian Coalfield;