1) layer coal
层状煤
2) foliated coal
层状褐煤
3) foliated coal
片状褐煤，层状褐煤
4) stress of coal seams
煤层应力状态
1.
The software FLAC2D was used to simulate the stress of coal seams when the working face was advancing to make sure that the inclined coal seam near the Changgouyu syncline axis can be safely mined.
为了保证长沟峪矿向斜轴部倾斜煤层的安全开采,用FLAC2D对工作面推进过程中的煤层应力状态进行工程数值模拟,研究向斜轴部原岩应力状态的变化规律和向斜两翼采空后轴部煤层的应力状态分布规律,结果表明向斜轴部煤层应力状态相对集中,采空区前方煤体存在应力集中区。
5) ocurrence of coal seam status
煤层赋存状况
补充资料：煤焦油沥青针状焦
煤焦油沥青针状焦
89．煤焦油沥青针状焦
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条