【摘要】 本文报道了石煤开发利用中产生的对环境的放射性影响问题。石煤中U、²²⁶Ra含量高,在其生产和利用过程中,如无任何控制措施,可以导致环境放射性污染。调查结果表明:浙江省石煤开发利用区土壤中²³⁸U 和²²⁶Ra 含量分别比对照区高2.4和2.1倍;陆地γ辐射水平比对照区高44%;石煤渣砖建房室内γ辐射剂量率比对照区高80%;石煤渣砖建房室内氡及其子体浓度最高分别可比一般砖建房高35和42倍,室内氡子体所致居民年附加有效剂量当量为41.2mSv;并导致钱塘江冰系某些局部江段中²³⁸U 和²²⁶Ra 浓度增加了一个数量级。更多还原

【Abstract】 This paper reported environmental problems from mining and utilization of bone coal.It can result in environmental radioactivitycontamination if there are no protective measures.The paper shows thatthe radioactive level of ²³⁸U and ²²⁶Ra in the contaminated area is2.4 and 2.1 times higher then the controlled area respectively,In comp-arision to the constructed house with normal brick the exposure in thebuilding constructed by using stohe-like coal cinder are meanly 80%higher,and the contents of radon and its daughters in the air indoors are 35 42,times higher.The effective dose equivalent from the radon daughtersis about 41.2 mSv.The contents of U and ²²⁶Ra in the water are,increased by one order of magnitude in some reaches of Qiantanriver.更多还原