Two major geological control factors of occurrence characteristics of CBM
Abstract：Studied the impact mechanism of the structural evolution and hydrodynamic conditions,and analyzed the CBM occurrence characteristics of Zhaogezhuang mine field.The research shows that the structures control CBM production,accumulation and output,water dissolves part of the gas and control the coal pressure,and the flow of water directly influences the degree of CBM adsorption-desorption.The present CBM characteristics of Zhaogezhuang mine field are the results of combined effects of structures and hydrodynamic conditions,and the structural characteristics has a clear partition：the structures develop in the part Ⅰ and Ⅱ,where CBM is blocked by thrust faults and compressive-torsional faults;the part Ⅲ is controlled by Kaiping syncline,and the CBM content is much more higher in syncline core.Moreover,there is a closed or semi-enclosed hydrogeological environment in the mine field and a hydraulic-blocking function in the north-west limb of Kaiping syncline,which benefit for the CBM saving.
Keywords：CBMoccurrence characteristicsstructural evolutionhydrodynamic conditionsKaiping syncline
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)