赛尔能源三矿A4007工作面瓦斯涌出规律与治理  

Gas Emission Regularity and Control in the A4007 Working Face of Saier Third Energy Company

作　　者：赵勇[1] 罗才武[1] 雷波[1] 刘军 

机构地区：[1]南华大学环境与安全工程学院,湖南衡阳421001 [2]中煤科工集团重庆研究院有限公司,重庆400039

出　　处：《南华大学学报（自然科学版）》2017年第3期35-39,共5页Journal of University of South China：Science and Technology

基　　金：金属矿山安全与健康国家重点实验室项目(2016-JSKSSYS-09);湖南省教育厅基金资助项目(16C1387);南华大学博士科研启动基金项目(2016XQD34)

摘　　要：为降低赛尔能源三矿A4007工作面瓦斯含量,本文计算了巷道煤壁瓦斯涌出量、落煤瓦斯涌出量,以及开采层相对瓦斯涌出量,并分析了工作面瓦斯涌出规律.得出回采工作面相对瓦斯涌出量为1.54 m^3/t,绝对瓦斯涌出量为3.11 m^3/min,占涌出总量的15.6%,工作面瓦斯主要来源于采空区.针对性的提出工作面采用采空区埋/插管抽放,老空区封闭插管抽放,本煤层预抽、边采边抽、强化抽放,上隅角密闭抽放.对抽采效果进行检验,治理后上隅角瓦斯浓度基本控制在1%以下,其平均瓦斯浓度为0.668%,极小值为0.3%,极大值为0.84%.回风流瓦斯浓度基本控制在0.4%以下,平均瓦斯浓度为0.264%,极小值为0.12%,极大值为0.38%.In this study,to reduce gas content in the A4007 working face of Saier Third Energy Mine,the gas emission rate of coal seams and coal falling,the relative gas emission of exploitation bed were calculated,and the regularity of the gas emission in mining face was analyzed.It was found that the relative gas emission of stope face was 1.54 m^3/t,the absolute volume of gas emission was 3.11 m^3/min,which comprised 15.6 per cent of the total gas emission.The gas in mining face mainly derived form goaf area. It pertinently broughtforward some measures,such as goaf buried or put tube drainage and the closed old goaf put tube drainage,the coal bed gas pre-extraction,draining while mining,intensive drainage,the closed upper corner drainage.The results showed that the measures for comprehensive control of the gas were much effective.The upper corner and vitiated air gas concentration were respectively below 1% and 0.4%,the average,maximum and minimum values for upper corner were 0.668%,0.84% and 0.3%,respectively. While that for vitiated air were 0.264%,0.38% and 0.12%.

关 键 词：涌出量 瓦斯抽采 埋管抽放 预抽 边采边抽 

分 类 号：TD712.5[矿业工程—矿井通风与安全]