河南顺和西矿区Ⅱ_2煤层煤岩煤质特征及瓦斯含量分带性  

The character of lithotype and coal property and the zonation of gas content in Ⅱ_2 coalbed,Shunhexi coal mine in Henan

作　　者：冯斌[1] 李文前[1] 郭新体[1] 杨战士[1] 颜少权[1] 

机构地区：[1]河南省地质矿产勘查开发局第四地质矿产调查院,河南商丘476000

出　　处：《中国矿业》2013年第4期118-122,126,共6页China Mining Magazine

摘　　要：豫东地区晚古生代具有丰富的煤炭资源。顺和西煤矿区主要发育下二叠统山西组Ⅱ2可采煤层和Ⅲ2局部可采煤层。Ⅱ2可采煤层埋深585～1985m,区域厚度分布稳定,平均厚度2.33m,为低灰、特低硫、特低磷、特高热值无烟煤和贫煤。煤层中瓦斯含量随煤层埋深加大而增高,埋深1300m以上为氮气-甲烷带,1300m以下为甲烷带。受构造-岩浆活动-煤层埋深的影响,中北部煤焦混合区,岩浆活动频繁,瓦斯易于逸散,瓦斯含量普遍较低;而东南部岩浆活动相对较弱,受构造或多条正断层的控制,煤层埋藏深,瓦斯含量普遍较高。There are the rich coal resources in late Paleozoic in eastern Henan region. It mainly developed Ⅱ2 minable seam and Ⅲ2 local minable seam in the lower Permian Shanxi formation. The Ⅱ 2 minable seam of anthracite and lean coal, buried in 585- 1985m and 2.33m in average thickness,it has the features of regional stability thickness distribution, lower grey, lowest sulfur, phosphorus, and highest calorific value. Gas content in coal seam increased with the more seam buried depth, the nitrogen-methane belt located above 1300m,methane under 1300m. By the influence of tectono-magmatic activities-coal buried depth,gas content is generally lower due to magmatic activity frequently and the escape of gas in the central northern coking coal mixed zone,but gas content is higher due to magmatic activity relatively weak, control by normal faults and buried deeply coal seam in southeast area.

关 键 词：煤岩和煤质 瓦斯 河南顺和西煤矿区 

分 类 号：P618.11[天文地球—矿床学]