Abstract:
Cuimiao Colliery is a mine where coal and methane burst is very serious. In order to instruct CBM drainage and methane disaster prevention, this paper analyzed CBM resource occurrence status and geological control factors of CBM in this area and indicated development tendency of CBM development technology on the basis of coalfield exploration and methane survey data. Results showed that methane content of 21 coal-seam was between 5. 59 ~ 35. 25m
3/t. Methane content of the coal-seam rose from west to east in plane and rose with buried depth of coal-seam increasing. Geological tectonic and buried depth were 2 key factors of controlling methane content. Restricted by coal-body structure, this area lacked exploring CBM condition on surface, so the development and utilization of CBM should be made by underground drainage.