1) coal bearing seams
煤岩地层
1.
Observing the appearance of geological structure of fold break and joint etc resulted from the crustal stress, analyzing the characters of the joint relationship between the coal bearing seams, this paper discussed the formation mechanism of karst collapse column and gave a new theortlical basis for analyzing measuring the karst collapse column and putting it under control in a comperhensive way.
通过对地壳运动作用力所产生的褶皱、断裂、节理等地质构造现象的观察，结合对具有岩溶现象地区煤岩地层间接触关系特征的研究，论述了岩溶陷落柱的形成机理，为陷落柱的分析、探测和综合治理提供了新的理论依据。
2) coal measures sandstone
煤系砂岩地层
3) Tonstein
['tʌnstein]
煤系地层高岭岩
1.
Problems and Countermeasures for Comprehensive Utilization of “Tonstein”in China;
我国煤系地层高岭岩综合利用的问题与对策
4) coal-series strata
煤岩层
1.
Aim The study on the genetic types of abnormal weathering of deep-seated coal-series strata in Weibei Permo-Carboniferous(C-P) coalfield of Shaanxi Province is of great practical significance to guide the effective production of coal mines.
目的 探讨渭北C-P煤田深部煤岩层异常风化的成因类型。
5) soft coal rock strata
软煤岩层
6) coal-hearing formation
含煤岩层
补充资料：煤系地层气
煤系地层中，集中型有机质──煤和暗色泥岩内的分散有机质，在成煤过程(热演化)所形成的天然气（或油）。在适宜的储集和圈闭条件下，可形成工业性气藏(或油藏)。
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