昭通褐煤盆地是我国储量最大的第三纪褐煤田之一,煤层最厚达200余米,剥采比多在3以下,适合大型露天开采。但煤层多为复煤层和复杂结构煤层;煤化程度较低,属0_1阶段;全水分(W_Q~y)含量达50～60％,灰分(A~(?))一般为20～30％,分析基弹筒发热量(Q_(DT)~f)为3700～4000大卡/公斤,而应用基低位发热量(Q_(DW)~y)仅为1600～1700 Zhaotong lignite basin is one of the largest reserves of Tertiary lignite coalfields in China. The thickest coal seam reaches more than 200 meters and the stripping ratio is more than 3, which is suitable for large-scale open pit mining. However, the coal seams are mostly complex coal seams and complex seams; the degree of coalification is low, which belongs to 0_1 stage; the content of W_Q ~ y reaches 50-60% and the ash content (A ~ (?)) Is generally 20-30% The base cylinder calorific value (Q_ (DT) ~ f) is 3700 ~ 4000 kcal / kg, while the application base low heat (Q_ (DW) ~ y) is only 1600 ~ 1700