高反式1,4-聚异戊二烯合成的新方法.pdf

第41卷第4期煤田地质与勘探Vol. 41 GEOLOGY & EXPLORATIONAug. 2013收稿日期:2013-03-18 作者简介:苗琦(1964—), 男, 云南宜良人,高级工程师, 从事煤田地质勘探、瓦斯地质及煤矿安全评价工作. 文章编号: 1001-1986(2013)04-0005-04滇东上二叠统煤层煤岩特征及其对瓦斯涌出量的控制苗琦(云南省一九八煤田地质勘探队, 云南昆明 650208) 摘要: 基于滇东上二叠统赋煤区煤层的煤岩学特征、瓦斯含量、瓦斯涌出量及煤矿瓦斯事故统计分析,对研究区煤层的煤岩组成、煤体结构、煤炭筛分试验成果、煤层瓦斯含量和煤矿瓦斯涌出量进行了比对研究。研究表明:煤变质程度、显微煤岩组分、筛分粒级煤及煤的孔隙率等煤岩学特征控制了瓦斯的分布特征,并造成煤矿瓦斯涌出呈现区域性的差异;滇东上二叠统赋煤区瓦斯涌出类型可分为低煤阶均匀涌出型、中煤阶均匀涌出型、中煤阶非均匀突出型、高煤阶均匀涌出型和高煤阶非均匀突出型,且以中煤阶均匀涌出型为主。关键词:煤岩学特征;区域煤矿;瓦斯涌出;上二叠统;滇东中图分类号: 文献标识码:A DOI: .1001- Petrological characteristics of coal and their control on gas emission of Upper Permian in eastern Yunnan MIAO Qi ( Coalfield Geology Prospecting Team of Yunnan Province, Kunming 650208, China)Abstract: Based on petrological characteristics of the Upper Permian coal in eastern Yunnan and the statistic analysis of gas content, gas emission and coal mine gas accidents, this paper parative research on position, coal structure, coal screening test results, gas content of each coal seam and gas emis-sion. The results show that petrological characteristics of coal, such as metamorphism degree, coal maceral, size fraction and porosity have determined gas accumulation and resulted in the regional differences of the gas emission. The emission category of Upper Permian in eastern Yunnan can be divided into several types: uniform emiss