鄂尔多斯盆地南缘黄陵地区煤铀兼探钻孔 数据集成与三维地质模型构建

The Huangling area on the southern margin of the Ordos Basin boasts great potential for uranium mineralization. China Geological Survey has organized and implemented 3D geological survey of the uranium-bearing rock series in this area to seek prospecting target areas of in-situ leachable sandstone-hosted uranium deposits. During the survey, the data of the coalfield boreholes were developed and utilized again to determine exploration areas under the guidance of new ideas of joint coal-uranium explorations and joint petroleum-uranium explorations. As a result, the data of 354 coalfield boreholes (49 potential sandstone-hosted uranium ore boreholes) and 21 verified uranium ore boreholes (16 industrial uranium mineralization boreholes) were acquired and a database was created accordingly. Furthermore, a thematic result atlas and a 3D geologic model were established, which mainly constitute the database. The thematic result atlas includes the isoline maps of stratum thickness, sand body thickness, the burial depth of the roof and floor, sand content and radioactive anomalies of the uranium-bearing rock series. Therefore, the database will provide active support and service for the exploration and development of uranium deposits.

鄂尔多斯盆地南缘的黄陵地区铀成矿潜力巨大。中国地质调查局组织实施了该区域含铀岩系的三维地质调查，以寻找可地浸砂岩型铀矿床（in-situ leachable sandstone-hosted uranium deposits）的找矿靶区。本次调查依托煤田钻孔数据的二次开发与利用，在煤铀协同勘查、油铀协同勘查的新思路指导下圈定勘查区块，最终获取了354个煤田钻孔（其中含潜在砂岩型铀矿钻孔49个）以及21个验证铀矿钻孔（其中具工业铀矿化钻孔16个）的数据，并据此建成相关数据库。此外，项目还编制了专题成果图件集并构建了三维地质模型，二者共同构成该数据库的核心组成部分。专题成果图件集涵盖含铀岩系的地层厚度等值线图、砂体厚度等值线图、顶底板埋深等值线图、砂质含量等值线图以及放射性异常分布图。该数据库将为铀矿床的勘查与开发提供积极的支撑与服务。