By synthetically analyzing, the paper explains the reason of the no coalzone and the distributed law.
综合分析，对煤厚削减带的成因做出详细解释。阐明煤厚削减带的分布规律。
2
The contact metamorphic zone may be further divided into coking coal mixing zone, natural coke zone, coking coalzone and normal coalzone.
接触变质带可进一步划分为岩焦混杂带、天然焦带、焦化煤带、正常煤带。
3
The main location of the storage of the high -purity CO2 exists in the limits of the coal rupture zone, and the lower part of coalzone, especially in lower plate.