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.
出处
《煤炭科学技术》
CAS
北大核心
2010年第2期32-34,共3页
Coal Science and Technology
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
extreme thin seam in Xujiahe Group
gas pressure
gas content
seam depth
Sichuan coalfield
