土城矿煤层厚度变化成因分析

Cause Analysis on Thickness Variation of Coal Seams in Tucheng Mine

依据土城矿井田范围内生产实见煤层形态和厚度变化情况,探索本区域含煤建造特征和聚煤古地理环境,初步找出了本井田范围内煤层厚度变化的成因是原生变化中地壳不均衡沉降、泥炭沼泽基底不平和河流同生冲蚀,后生变化中的构造挤压引起煤层厚度变化。

Based on the state and thickness variation of coal seams within the mining area of Tucheng Mine,the authors made an approach to the features of coal-bearing formation and ancient geographical environment for coal gathering in this mining field,and preliminarily found that the thickness variation of coal seams was caused by the unbalanced subsidence of earth crust,the uneven base of moor and the syngenetic washing of river in primary variation as well as the structural extrusion in epigenetic variation.