摘要
沉积环境影响着煤层围岩的岩性组合、煤层埋深以及煤质的变化,因此研究其与瓦斯含量之间的关系对矿井地质工作有着重要的意义。针对阳泉矿区五矿太原组15#煤层进行研究,通过对区域内岩石样品的观察和矿井瓦斯含量等资料的综合分析,在五矿太原组内识别出2种沉积相和5种沉积亚相,并总结了其特征。从煤质、煤层厚度、顶底板岩性、及埋深4个方面探讨了沉积环境与瓦斯赋存的关系,发现煤自身变质程度越高瓦斯含量也越高,煤层厚度与瓦斯含量关系不大,而煤层的埋藏深度以及底板板泥岩厚度和顶板灰岩厚度都与瓦斯含量成正比。
Sedimentary environment affects the lithology combination,the depth of coal seam and the change of coal quality. Therefore,studying the relationship between the sedimentary environment and the gas content is very important for mine geological work. Aiming at the 15 # coal seam of Taiyuan formation in Yangquan mining area,through the comprehensive analysis of rock samples and gas content in the area,2 sedimentary facies and 5 sedimentary subfacies were identified in Taiyuan group,and their characteristics were summarized. The relationship between the sedimentary environment and the gas accumulation is discussed from 4 aspects： coal quality,coal seam thickness,lithology of top and floor,and buried depth,it is found that the higher the degree of coal self metamorphism is,the higher the gas content is. The thickness of coal seam is not related to the gas content,but the buried depth of the coal seam,the thickness of the mudstone of the floor plate and the thickness of the roof limestone are in direct proportion to the gas content.
作者
张海涛
ZHANG Hai-tao(Anhui Province Coal Mine Exploration Technology Research Centre,Suzhou University,Suzhou,Anhui 234000,China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2018年第3期426-429,452,共5页
Journal of Jiamusi University：Natural Science Edition
基金
宿州学院安徽省煤矿勘探工程技术研究中心科研平台开放课题资助(2016ykf02)
关键词
沉积环境
瓦斯赋存
五矿
太原组
sedimentary environment
gas storage
the fifth mine
Taiyuan group
