黄陵建新煤矿回采工作面瓦斯浓度超限危险性预测  

Coal Face Gas Concentration Transfinite Hazard Prediction in Jianxin Coalmine, Huangling

作　　者：孙魁[1] 王英[1] 张兴文 

机构地区：[1]西安科技大学地质与环境学院,西发710054 [2]陕西建新煤化有限责任公司,陕西黄陵727304

出　　处：《中国煤炭地质》2016年第3期30-34,共5页Coal Geology of China

基　　金：国家能源局全国煤矿瓦斯地质编图项目(国能煤炭[2009]117号)资助

摘　　要：通过分析建新煤矿瓦斯地质特征,结合灰色关联分析结果,选取底板标高为影响工作面瓦斯涌出量变化的主控因素,运用图切剖面法,分析4-2煤层工作面绝对瓦斯涌出量变化与煤层顶板岩性及上覆4-1煤层分布的关系。将井田内4-1煤层尖灭区分为顶板砂岩分布区、顶板泥岩分布区,4-1煤层分布区作为一个单独区域,引入置信上限概念,采用一元线性回归分析法,分别对三个区域进行瓦斯涌出量预测;采用类比原则,将全井田4-2煤层分为回采工作面瓦斯浓度正常区(低瓦斯区)、超限警戒区(富瓦斯区)和超限危险区(高瓦斯区)。According to gas geological features in the Jianxin coalmine combined with grey relational analytic results have selected floorelevation as the main impacting factor on working face gas emission variation. Using transverse cutting profile method analyzed relation-ship between coal No.4- 2working face absolute gas emission variation and coal roof lithology and overlying coal No.4- 1distribution.Then have partitioned the minefield coal No.4-1pinch-out area into roof sandstone distributed area and roof mudstone distributed area.Taking coal No.4-1distribution area as a separated zone, introduced confidence upper limit concept, using simple linear regression anal-ysis carried out gas emission prediction for three areas respectively. Through analogy principle has partitioned the minefield coal No.4-2coal face gas concentration into normal（low gas） area, transfinite precautionary（gas rich） area and transfinite hazard（high gas） area.

关 键 词：瓦斯 赋存规律 图切剖面法 涌出量预测 瓦斯超限危险性 

分 类 号：TD721.5[矿业工程—矿井通风与安全]