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我国煤层气的开发和利用 总被引:1,自引:0,他引:1
开发利用煤层气在我国是一个崭新的领域,它不仅有利于环境保护,合理地使用能源,而且有助于煤矿的安全生产。本文介绍了国内外煤层气发展概况,论述了开发利用煤层气的意义,并且为使煤层气产业顺利发展提出了建议。 相似文献
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定量评价煤的破坏程度的尝试 总被引:1,自引:0,他引:1
介绍了定量评价煤破坏程度的意义.阐述了研究思路和研究方法,尝试采用筛分分析的方法得出粒径小于05mm煤的百分含量来反映煤的破坏程度.通过对52个样品的筛分分析,认为筛分指数可以作为定量评价煤的破坏程度的指标. 相似文献
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哈密、淮北煤变质程度与稀土元素的关系研究 总被引:6,自引:0,他引:6
以哈密矿区、淮北煤田为例,对煤的变质程度与稀土元素特征之间的关系进行了初步研究,结果表明:哈密矿区变质程度相同的煤具有不同稀土元素特征,淮北煤田不同变质程度煤的稀土元素特征基本一致,这表明变质作用对煤的稀土元素不产生影响;稀土元素含量与灰分正相关,表明煤中稀土元素含量主要取决于煤的无机组分含量;稀土元素分布模式与华北晚古生代沉积的特征是一致的,表明煤样稀土元素分布模式是由源岩继承下来的。 相似文献
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Through site observation and indoor measurements in XieJiaji No.2 Coal Mine in Huainen and Luling Coal Mine in Huaibei, it is discovered that the fragmentation degree are different in different coal seams in same mining district and even in sublevels of the same coal seam, the coal mass structures exist much difference. By analyzing the relationship between the constitution of coal matters and the epigenesis breakage of coal. This paper points out that the internal factor which causes the diversity of the coal mass structure comes from the diversity in the contents of telocollinite and desmocollinite in the vitrinite. The contenet of desmocollinite is higher than that of telocollinite in intact coal seam (sublevel) but the former is less than the later in breaking sublevel, the diversity of constituent content more affects the epigenetic fragmentation degree of coal seam. The content of desrnocollinite proves lower than that of telocollinite in the broken coal seam. The new understanding has directing, and reference for the study of coal petrology, coal mine gas geology and coal methane. 相似文献
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