So that a scientific basis for tunnel construction of coal measures strata and reasonable exploiting mineral resources in complex geological conditions is offered.

为复杂地质条件下煤系地层隧道建设和合理开采矿产资源提供了科学依据。

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By analyzing the geological characteristics, function of coal gathering, coal measures strata and burial conditions of Jiyuan area, it is pointed out the prospecting direction for coal field.

通过对济源西部地质特征、煤田聚煤作用、煤系地层及埋藏条件的分析，提出了在该区的找煤方向。

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The chemical constitution and mineral composition were analysed with a hard kaolin(kaolinite) of the Carboniferous-Permian coal measures strata, in Baishan region of Jilin province as the sample.

以吉林白山地区石炭、二叠煤系高岭土（或高岭石）为试样，进行了矿物成分、含量分析和研磨、 煅烧、添加不同漂白剂加工工艺实验。

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