组合煤岩试样中煤层厚度越大，则其弹性能指数就越大。
Meanwhile the thicker the coal in the combined sample is, the greater the elastic energy index is.
研究顶板-煤体-底板所构成的组合煤岩体试样变形破裂规律及冲击倾向性对于预测冲击矿压具有非常重要的实践意义。
It is necessary to research into the burst failure and rock burst tendency of combined sample which is made up of roof, coal and floor.
滇东晚二叠世含煤岩系良好的岩性组合，贮藏了丰富的煤层气资源。
The excellent rock assemblage of Late Permian coal -bearing rock series in East Yunnan contains abundant seam gas resources.
煤系的层序组合是影响煤层气富集的主要因素之一，薄煤岩互层是层序组合的一种类型。
Succession formation of coal measures is one of the important factors that affect enrichment of coal bed methane.
聚煤特征、含煤岩系的岩性、岩相组成及其空间组合均受控于沉积环境。
The characteristics of coal accumulating, lithology, composition of lithofacies and its spacial combination are all controlled by sedimentary environment.
通过对该区含煤地层组合特征综合分析，认为其应属下侏罗统北票组含煤岩系。
Through comprehensive analysis of coal-bearing strata combinative characteristics in the area, figured out the strata belong to Lower Jurassic Beipiao Formation coal-bearing rock series.
同时考虑到实际煤岩层结构特点与覆存特性，建议采用组合模型来评价煤岩冲击倾向性。
According to the results, the composite model is advised to evaluate the bursting liability of coal or rock, considering the characters of frame and cover in point of the layer of coal and rock.
同时考虑到实际煤岩层结构特点与覆存特性，建议采用组合模型来评价煤岩冲击倾向性。
According to the results, the composite model is advised to evaluate the bursting liability of coal or rock, considering the characters of frame and cover in point of the layer of coal and rock.
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