摘要
我国现行《煤、泥炭地质勘查规范》对煤层稳定性只规范了概略性的评价,没有量化概念。借鉴老专家刘铁提倡的变概比CPR,意思是煤层厚度的变异系数Cv与可采概率x比值的百分数来定量评价煤层的稳定性。可胜利煤田锡林露天矿在14km2投入114个钻孔,经变概比计算,其最大值为7煤层达60%,最小值为6煤层为23%,与采概率比较,认为该区6号煤为第一稳定煤层,依次分别为5下、5、12、7。与原结论相比,仅有7煤层稍有差异。
In the existing ＂Coal, Pit Geological Exploration Criterion＂, for coal seam stability, only outlined evaluation is standardized, and has no any quantification conception. Here, an idea of coefficient of variation and mineable probability ratio or CPR put forward by a senior specialist Mr. Liu Tie is borrowed to evaluate coal seam stability quantitatively. To take the quantitative evaluation of coal seam stability of Xilin surface mine in Shengli coalfield exploration as an example, discussed coal seam stability quantitative indices, to raise accuracy of coal seam stability evaluation in coal resource exploration a step further.
出处
《中国煤田地质》
2007年第4期16-17,24,共3页
Coal Geology of China
关键词
煤层厚度的变异系数
可采概率
变概比
煤层稳定型别
coal thickness coefficient of variation
mineable probability, CPR
stability grading of coal seam
