According to that, we marked the workable sector. It breached the traditional ideas of extracted workable seam.
以此为依据，对化工三号采区可采段进行划分，打破了按可采层进行开采的传统观念。
The geology survey of Hegang coal field are introduced and some obvious characters of workable seam are compared.
介绍了鹤岗煤田的地质概况，并对主要可采煤层的一些比较明显的特征进行了对比。
Through analysed workable coal seam change features, coal-rich zone, the distribution features of coal accumulation Center, describe the pattern of Chengzihe River Formation in Jixi coal Basin.
通过对可采煤层变化特征及富煤带、聚煤中心分布特征的分析，简述鸡西盆地城子河组煤层聚煤规律。
Through analysed workable coal seam change features, coal-rich zone, the distribution features of coal accumulation Center, describe the pattern of Chengzihe River Formation in Jixi coal Basin.
通过对可采煤层变化特征及富煤带、聚煤中心分布特征的分析，简述鸡西盆地城子河组煤层聚煤规律。
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