This standard was compiled to adapt to the standardization of geological data. The purpose is to improve the oversimplification of core identification in many areas, the insufficiently unified description content, and the inaccurate identification of certain signs, and further promote the improvement and unification of the description and identification level to fully obtain the coal-bearing content. Various genetic analysis information of cores in the rock series lays the foundation for further research on reconstructing the depositional environment and coal seam contrast, as well as petrophysical properties that are closely related to mining technical conditions. This standard is divided into lithology part, sedimentary structure part, petrogenesis type part and coal rock and coal facies part. In order to be used by grassroots geologists for on-site comparison, it is mainly based on ancient hole core data of coal-bearing rock series, and Supplemented by a small amount of outcrop data. (DZ/T 0002.2-1991) selects and compiles the main petrogenetic types in the drilling cores of coal-bearing rock series. Since the evolution of the sedimentary characteristics of coal-bearing rock series has historical stages, this standard will study the sedimentary environment background in detail. The petrogenetic types are arranged separately according to the Paleozoic, Mesozoic and Cenozoic Era. The characteristics of each petrogenetic type are briefly described and environmental explanations are given, so that grassroots geologists can compare the cores on site.
DZ/T 0002.2-1991 history
2017DZ/T 0002-2017 Drill core description of coal-bearing rock series
1991DZ/T 0002.2-1991 Coal-bearing rock series drilling core description standard petrogenetic type part