四川是全国煤矿瓦斯灾害的重灾区。截至2008年底,全省有煤矿1417对。从矿井生产规模上看,年生产能力小于或等于30万t的小型矿井就占全省煤矿总数的97%,多年来全省以民营小型煤矿生产为主导的能源供应结构未能从根本上得到改善;从赋存条件上看,全省煤矿地质结构复杂,煤炭资源赋存条件差,开采薄煤层、极薄煤 Sichuan is the hardest hit by coal mine gas disaster in China. As of the end of 2008, the province has 1417 pairs of coal mines. From the perspective of mine production scale, small-sized mines with an annual production capacity of 300,000 t or less account for 97% of the total coal mines in the province. Over the years, the province’s energy supply structure dominated by private-owned small-scale coal mines has not been able to obtain fundamentally Improve; from the point of view of existential conditions, the geological structure of coal mines in the province is complex, poor conditions for the presence of coal resources, the exploitation of thin coal seams, ultra-thin coal