气候变化领域集成服务门户(CCPortal): Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: a case study

CCPortal

DOI	10.1007/s11069-019-03835-6
	Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: a case study
	Gao Z.-S.; Zhu C.-J.; Lu X.-M.; Ren J.
发表日期	2020
ISSN	0921030X
起始页码	713
结束页码	733
卷号	100 期号:2
英文摘要	Gas (coalbed methane) and fissure water often coexist in coal-bearing strata, and gas is sealed in adjacent rock strata by fissure water in some coal mines. After the fissure water is discharged, abnormal gas emission may occur due to accidental release of large amount of sealed gas. In the present work, abnormal gas emission caused by accidental discharge of floor fissure water occurred at Tangjiahe Coal Mine (Guangyuan, China), and its control method was discussed. Sealing technology, uniform pressure ventilation and gas drainage for intercepting gas by cross-boreholes were adopted to solve abnormal gas emission. Firstly, several sealings were constructed to seal gobs full of high-concentration gas, which prevented gas diffusion and spread into mining space. Two gas extraction systems were installed, and uniform pressure ventilation was applied to eliminate fissure gas accumulated in gobs. Subsequently, a comprehensive recovery of ventilation was realized. As a supplementary measure, downward cross-boreholes were drilled to prevent gas from releasing into mining space. © 2019, Springer Nature B.V.
关键词	Abnormal gas emission Fissure water Gas control Gas drainage Uniform pressure ventilation
英文关键词	coal mine; coalbed methane; degassing; drilling; fissure; gas flow; pressure field; sealing; ventilation; China; Guangyuan; Sichuan
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205699
作者单位	Faculty of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
推荐引用方式 GB/T 7714	Gao Z.-S.,Zhu C.-J.,Lu X.-M.,et al. Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: a case study[J],2020,100(2).
APA	Gao Z.-S.,Zhu C.-J.,Lu X.-M.,&Ren J..(2020).Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: a case study.Natural Hazards,100(2).
MLA	Gao Z.-S.,et al."Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: a case study".Natural Hazards 100.2(2020).