岱河煤矿煤-天然焦结构X射线衍射特征分析

为了正确划分煤与天然焦，进行合理的储量计算，采用X射线衍射方法，对岱河煤矿煤与天然焦系列样品进行了测试，根据测试结果利用布拉格方程和谢乐公式计算了d（002）、Lc、La等煤结构参数。结果表明：①随着煤向天然焦的转变，其d（002）Lc、La等值增大；②煤与天然焦在结构参数上存在明显分界：③随着煤变质程度的增加，（002）衍射峰向高角度方向偏移，峰形由低矮变为高耸。研究结果为煤、焦分采设计及煤炭资源的合理利用提供了科学依据。

Analysis of X-ray diffraction patterns of structure of coal-natural coke in Daihe Coal Mine

For the sake of right dividing coal and natural coke and carrying reasonable calculation of reserves with X-ray diffraction coal and natural coke from Daihe coal mine are tasted. According to the test result, the structure parameters of d(002), Lc and La are calculated by Bragg equation and Scherer formula. The result shows: First, as coal changes to natural coke, its d(002) decreases, while its Lc and La increases; Second, there is a obvious borderline of structure parameters between coal and nature coke; Third, with the increase of metamorphosing degree, the diffraction apex of d(002) changes to higher angle, and the shape of apex changes from laigh to lofty. The research result provides a scientific basis for design of separate mining of coal and natural coke and reasonable use for coal resources.