摘要
结合14205工作面的实际条件,数值模拟其采动煤层顶板裂隙的形成和分布特征,对上覆岩层内横三区、竖三带的分布做出了定量描述,找出了瓦斯赋存、流动的主要裂隙发育区和"∩"形拱采动裂隙区。通过对瓦斯运移规律和瓦斯浓度分析,确定了此裂隙区域为瓦斯汇集区域。为瓦斯防治工程提供了理论依据。
Based on the actual conditions of the # 14205 face, numerical simulation is used to show the forming of seam roof fissures caused by mining and its pattern of distribution. A quanti- tative description of fissure distribution in the lateral three zones and vertical three zones are presented and the major developed fissure zones with methane occurrence and flows as well as the fissure zones caused by mining are identified. On the basis of an analysis of the methane move- ment pattern and methane concentration, it is identified that this fissure zone is the location where methane concentrates.
出处
《中国煤炭》
北大核心
2009年第12期89-91,共3页
China Coal
关键词
煤层顶板
采动裂隙
瓦斯分布
运移规律
coal seam roof
mining caused fissures
methane distribution
pattern of movement
