四川煤田上三叠统极薄煤层瓦斯抽采程度分析  

Analysis of Gas Drainage Degree in Pliocene Triassic Series Extreme Thin Seam of Sichuan Coalfield

作　　者：李维光[1] 吕俊高 

机构地区：[1]四川师范大学工学院,四川成都610100 [2]四川矿山安全技术培训中心,四川成都610017

出　　处：《煤炭科学技术》2010年第2期32-34,共3页Coal Science and Technology

摘　　要：针对四川煤田地质条件复杂,煤层赋存条件差,瓦斯灾害严重的现状,对开采上三叠统须家河组极薄煤层的10对煤矿进行了现场实测和实验室煤样分析,得出了煤层瓦斯压力、含量与煤层埋深的关系。结果表明:四川煤田上三叠统须家河组极薄煤层属于难抽采煤层,瓦斯压力梯度为0.003～0.006MPa/m,瓦斯含量为6～8m3/t。According to the complicated geological conditions, the poor seam deposit conditions and the serious status of the gas disaster in Sichuan coal mines, the site measurements and the lab coal sample analyses were conducted on the extreme thin seam in Xujiahe Group of Sichuan Pliocene Triassic Series in ten coal mines. The relationship between the seam gas pressure, gas content and seam depth was pro- vided. The results showed that the extreme thin seam in Xujiahe Group of Sichuan Pliocene Triassic Series in Sichuan coal mines was a difficult gas drainage and mining seam, the gas pressure gradient was 0. 003.-0. 006 MPa/m and the gas content was about 6 -8 m3/t.

关 键 词：须家河组极薄煤层 瓦斯压力 瓦斯含量 煤层埋深 四川煤田 

分 类 号：TD712[矿业工程—矿井通风与安全]