摘要
通过整理矿井地质勘探和开采测试揭露的瓦斯地质资料,利用瓦斯地质研究方法揭示矿井现开采15#煤层瓦斯地质规律。结果表明,15#煤层瓦斯含量总体随埋深增加而减小。究其原因,K2、K3和K4石灰岩裂隙岩溶含水层是15#煤层直接充水含水层,在钻孔3-5及保-1处15#煤层陷落柱发育,由于陷落柱可能存在导水现象,使得含水层与煤层具有水力联系,在地下水运移过程中,煤层瓦斯也发生运移,造成煤层瓦斯含量降低。
Through collection of gas geological datum got from mine geological exploration and tryout mining,the gas geological research method is used to bring to light the gas geological laws of mining #15 coal seam.The results indicate that,gas content in #15 coal seam is getting lower along with the depth of coal seam underground.The reason is that,water-bearing strata of K2、K3、K4 limestone fissured karst is the water filling resource directly to #15 coal seam.#15 coal seam downthrow column develops in 3-5 drilling hole and Bao-1 drilling hole.Due to the possible water flowing in downthrow columns,water connection exists between water-bearing strata and coal seams.With the water moving underground,coal seam＇s gas is also moving,hence makes the gas content in coal seams reduced.
出处
《中国煤炭》
北大核心
2011年第2期34-37,共4页
China Coal
关键词
瓦斯地质规律
地下水
地质勘探
保安煤矿
gas geological laws
underground water
geological exploration
Bao＇an Coal Mine
