摘要
The importance of simultaneous coal and methane extraction and its significance on green exploitation is stated, and current research situation of simultaneous coal and methane and faced new problems are introduced. The research progress on movement of overlying strata and stresses change in them, cracks development during mining in overlying strata and meth- ane emission under disturbance of mining as well as the changing rules of permeability and methane flow under the disturbance of mining is analyzed. The progress on practice of simultaneous coal and methane extraction is analyzed. The deficiencies of current research and further researching fields on simultaneous coal and methane extraction are pointed out.
基金
Supported by the National Science Foundation of China （51304006）
the Key Project of Anhui Provincial Department of Education （KJ2011A075）
the Youth Backbone Training Funds of Anhui University of Science ＆Technology （20120012）
