本文選題：瓦斯賦存 + 地質(zhì)因素�。� 參考：《煤礦安全》2015年11期

【摘要】：為了使祁南礦煤層瓦斯得到更加有效的抽采以及達(dá)到更好的治理效果,從構(gòu)造演化和水動(dòng)力條件2大控制瓦斯賦存的地質(zhì)因素入手,研究它們對(duì)祁南礦煤層瓦斯的控制特征。研究表明:構(gòu)造演化的回返抬升控制著瓦斯生成特征,尤其是熱成因氣和次生生物成因氣,其中判斷次生生物成因氣成為現(xiàn)今祁南礦72煤層主要成因氣;水文動(dòng)力條件總體上對(duì)祁南礦72煤層中瓦斯起到了水力封堵作用,使得煤層中瓦斯富集,這是祁南礦72煤層瓦斯含量高于鄰近礦相同煤層的主要原因,在局部上,水力運(yùn)移、逸散作用對(duì)第Ⅱ塊段煤層瓦斯的運(yùn)移起到了控制作用,而水力封閉作用對(duì)煤層瓦斯的賦存有一定的影響。
[Abstract]:In order to get more effective drainage of coal seam gas and achieve better control effect in Qinan Coal Mine, the control characteristics of gas in coal seam of Qinan Coal Mine are studied from the geological factors of tectonic evolution and hydrodynamic condition controlling the occurrence of gas. The study shows that the return uplift of tectonic evolution controls the characteristics of gas generation, especially thermal gas and secondary biogenic gas, in which secondary biogenic gas becomes the main genetic gas of 72 coal seam in Qinan Coal Mine. As a whole, hydrodynamic conditions play a hydraulic plugging role on gas in coal seam 72 in Qinan Coal Mine, which makes gas enrichment in coal seam. This is the main reason that gas content in coal seam 72 in Qining Coal Mine is higher than that in the same coal seam in adjacent coal mine. Fugacity plays a controlling role in the migration of coal seam gas in block 鈪，

本文編號(hào)：2113564