DOI: 10.1016/j.atmosenv.2017.09.052
Scopus记录号: 2-s2.0-85030312346
论文题名: A novel method for estimating methane emissions from underground coal mines: The Yanma coal mine, China
作者: Ji Z ; -M ; , Chen Z ; -J ; , Pan J ; -N ; , Niu Q ; -H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 170 起始页码: 96
结束页码: 107
语种: 英语
英文关键词: Estimation method
; MAIF
; Methane emissions
; Predictor
; Underground mine
Scopus关键词: Coal
; Coal bed methane
; Coal deposits
; Estimation
; Mechanical permeability
; Methane
; Estimation methods
; MAIF
; Methane emissions
; Predictor
; Underground mine
; Coal mines
; methane
; coal mine
; coal production
; coalbed methane
; estimation method
; methane
; numerical method
; permeability
; underground construction
; Article
; China
; coal mining
; energy conservation
; environmental protection
; exhaust gas
; permeability
; priority journal
; reservoir
; rock
; China
; Henan
; Jiaozuo
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: As the world's largest coal producer and consumer, China accounts for a relatively high proportion of methane emissions from coal mines. Several estimation methods had been established for the coal mine methane (CMM) emission. However, with large regional differences, various reservoir formation types of coalbed methane (CBM) and due to the complicated geological conditions in China, these methods may be deficient or unsuitable for all the mining areas (e.g. Jiaozuo mining area). By combing the CMM emission characteristics and considering the actual situation of methane emissions from underground coal mine, we found that the methane pre-drainage is a crucial reason creating inaccurate evaluating results for most estimation methods. What makes it so essential is the extensive pre-drainage quantity and its irrelevance with annual coal production. Accordingly, the methane releases were divided into two categories: methane pre-drainage and methane release during mining. On this basis, a pioneering method for estimating CMM emissions was proposed. Taking the Yanma coal mine in the Jiaozuo mining area as a study case, the evaluation method of the pre-drainage methane quantity was established after the correlation analysis between the pre-drainage rate and time. Thereafter, the mining activity influence factor (MAIF) was first introduced to reflect the methane release from the coal and rock seams around where affected by mining activity, and the buried depth was adopted as the predictor of the estimation for future methane emissions. It was verified in the six coal mines of Jiaozuo coalfield (2011) that the new estimation method has the minimum errors of 12.11%, 9.23%, 5.77%, −5.20%, −8.75% and 4.92% respectively comparing with other methods. This paper gives a further insight and proposes a more accurate evaluation method for the CMM emissions, especially for the coal seams with low permeability and strong tectonic deformation in methane outburst coal mines. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82676
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth Science and Engineering, Hohai University, Nanjing, China; School of Resources and Environment, Henan Polytechnic University, Jiaozuo, China; School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, China
Recommended Citation:
Ji Z,-M,, Chen Z,et al. A novel method for estimating methane emissions from underground coal mines: The Yanma coal mine, China[J]. Atmospheric Environment,2017-01-01,170