东北地区煤田地质环境放射性综合评价方法研究

STUDY ON THE COMPREHENSIVE EVALUATION METHOD OF GEOENVIRONMENTAL RADIOACTIVITY OF COALFIELDS IN NORTHEAST CHINA

摘要: 通过筛查天然放射性测井资料获取地层连续的放射性数据，以异常层与煤层的位置关系确定煤层型、煤间型、煤上型、煤下型4种异常类型，建立了一套应用于煤田原生地质环境放射性综合评价方法.经过对评价方法和评价结果的分析，认为东北地区巴彦山煤田、呼和诺尔煤田、阜新煤田、平庄煤田等地质环境放射性明显，在开发中应注意放射性核素迁移造成的环境影响.

Abstract: By screening the natural radioactive logging data to obtain the continuous radioactivity data of strata, according to the position relation between anomaly layer and coal seam, the paper recognizes 4 types of anomalies, including coal seam, inter-coal seam, above-coal seam roof and below-coal seam floor, and establishes a comprehensive evaluation method for radioactivity in primary geological environment of coalfields. Through the analysis of evaluation method and result, it is believed that the geoenvironment of Bayanshan coalfield, Huhenuoer coalfield, Fuxin coalfield and Pingzhuang coalfield in Northeast China are obviously radioactive, thus the exploitation should attach importance to the environmental impact of radionuclide migration.