Study on coal and coalbed methane joint mining model in Xiaohuigou Minefield

Based on large area overlapped conditions of present coalbed methane mining royalty and coal mining royalty,taking surface development plan of coalbed methane in Xiaohuigou Minefield as an example,numerical simulation means was applied to study on gas control effect of coal mining face in high gassy mine with the appl ication of coalbed methane surface drainage technology. The paper discussed the basis on complementary advantages and joint mining of coal and coalbed methane. The economic indexes related to cooperation joint mining of coalbed methane were evaluated. The comprehensive study results showed that based on alternated relationship b etween mining and excavation in the mine and in reference to statured favorable conductions of coal mine enterprise,the surface coalbed methane drainage in the high gas sy mining area could reduce the gas accident risks of mine,could improve coal mining efficiency and could ensure basic profits of coalbed methane development. Thus coal and coalbed methane joint mining could be realized and counterpoised situation between coal and coalbed methane enterprises could be changed.