DOI: 10.1007/s11069-019-03835-6
论文题名: Prevention and control of abnormal gas emission caused by accidental discharge of floor fissure water: a case study
作者: Gao Z.-S. ; Zhu C.-J. ; Lu X.-M. ; Ren J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 100, 期: 2 起始页码: 713
结束页码: 733
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168498
Appears in Collections: 气候变化与战略
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作者单位: Faculty of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
Recommended Citation:
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]. Natural Hazards,2020-01-01,100(2)