禹州煤田梁北二井山西组二1煤瓦斯地质特征  

The gas geology characteristics of II_1 coal seam in Liangbei No.2 coal mine,Yuzhou coalfield,Henan province

作　　者：陈良立[1] 刘庆献[2] 李惠杰[2] 马敏 

机构地区：[1]河南理工大学资源与环境工程学院,河南焦作454003 [2]河南省煤田地质局四队,河南平顶山467000 [3]河南平宝煤业有限公司,河南平顶山461700

出　　处：《河南理工大学学报（自然科学版）》2008年第2期125-130,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金重点资助项目(50534070-104)

摘　　要：勘探阶段对井田瓦斯地质特征的描述、瓦斯赋存规律的探讨以及突出危险性评价,是煤矿设计的重要依据.根据勘探阶段的资料,系统分析了禹州煤田梁北二井山西组二1煤瓦斯含量的控制因素,并对煤与瓦斯突出危险性进行了预测.研究表明:(1)开放性正断层是造成瓦斯散失的主要通道;(2)上覆地层有效厚度是控制瓦斯区域展布的主要因素,厚度越大,瓦斯含量越高;(3)顶底板为泥质岩类的区块,瓦斯含量较高;(3)深部地下水滞流区瓦斯含量高;(4)二1煤为突出危险煤层.Gas geology characterization, gas occurrence discussion and outburst hazard assessment are important foundations of coal mine design during exploration. Based on data obtained during exploration, the gas content controlling factors in Liangbei No. 2 coal mine is systemically analyzed, and gas outburst hazard is forecasted. The investigation indicates that the open normal faults are the main pathway for gas escape. The thickness of overburden strata above II1 coal seam is the main factor that controls the regional distribution of gas, which is the larger thickness, the higher coalbed methane content. The gas content is high in the deep stagnant zone of groundwater and Ⅱ1 coal seam is outburst hazard seam.

关 键 词：梁北二井 瓦斯含量 地质特征 煤与瓦斯突出 

分 类 号：TD712.2[矿业工程—矿井通风与安全]