浅埋深近距离煤层群综采工作面低氧原因分析与防治对策OA北大核心CSTPCD
Low Oxygen Causes Analysis and Countermeasures of Shallow Depth and Close Distance Coal Seam Group in Fully-mechanized Face
基于神东矿区厚松散层薄基岩浅埋深近距离煤层群的开采特点,分析了工作面低氧气体的来源及涌出原因,给出了工作面低氧的防治对策.认为:神东矿区煤层处于N2-CO2带,加之采空区遗煤低温氧化产生大量低氧气体,在通风负压和大气压力的作用下,通过漏风通道由采空区向回风隅角涌出,造成工作面低氧.低氧的防治是多种技术手段的综合应用,在开拓开采方面,尽量少留或不留联巷,减少采空区遗煤,采空区达5个以上时,相邻工作面留设足够距离的隔离煤柱;在安全监测方面,设置氧气传…查看全部>>
Based on mining characteristics of thick loose bed and thin bedrock shallow depth and close distance coal seam group in Shendong Mining Area,the source of low oxygen gas and gushing reasons were analyzed in working face,and control countermeasure for working face low oxygen is given.It shows that the coal seam in Shendong Mining Area is in nitrogen-carbon dioxide belt,and the low temperature oxidation of residual coal produces a large number of low oxygen ga…查看全部>>
郭永文
中国神华集团神东煤炭公司,陕西榆林719315
矿业与冶金
工作面低氧低氧气体通风系统采空区泄压漏风封堵
low oxygen of working facelow oxygen gasventilation systempressure relief of goafair leakage plugging
《煤矿安全》 2017 (9)
137-140,4
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