CAJ | 학술논문

根据区域化探数据预测地空界面天然放射性水平的基本原理和成都经济区1:25万土壤化探数据中铀、钍、钾的含量数据,首次对成都经济区的天然放射性地质环境进行了研究和评价.结果表明成都经济区的地质构造和地表出露岩层与研究区的放射性环境有较大关系.在研究区的大部分范围内,~(40)K比活度高于全国和世界的平均值,~(238)U的比活度远低于全国和世界的平均值,~(232) Th,的比活度与全国平均值相当,但明显高于世界平均值.除龙门山褶皱带和峨眉山-瓦山断褶带的小部分地区外,成都经济区的各项辐射评价参数均在国家建筑材料放射性核素限量标准控制式的范围之内.该文可为合理、有效的利用成都经济区的国土资源提供支持,也可对加速成都经济区经济一体化和城市的町持续发展提供必要的参考.
근거구역화탐수거예측지공계면천연방사성수평적기본원리화성도경제구1:25만토양화탐수거중유、토、갑적함량수거,수차대성도경제구적천연방사성지질배경진행료연구화평개.결과표명성도경제구적지질구조화지표출로암층여연구구적방사성배경유교대관계.재연구구적대부분범위내,~(40)K비활도고우전국화세계적평균치,~(238)U적비활도원저우전국화세계적평균치,~(232) Th,적비활도여전국평균치상당,단명현고우세계평균치.제룡문산습추대화아미산-와산단습대적소부분지구외,성도경제구적각항복사평개삼수균재국가건축재료방사성핵소한량표준공제식적범위지내.해문가위합리、유효적이용성도경제구적국토자원제공지지,야가대가속성도경제구경제일체화화성시적정지속발전제공필요적삼고.
Using geochemical prospecting data obtained in previous geological investigation and soil U, Th and K content data obtained from 1: 250 000 geochemical exploration in Chengdu Economic Area, this paper predicted the natural radioactivity on the ground-air interface. The results show that the specific activity of the radioactive nuclide ~(40)K is higher than its average values of China and the world, ~(238)U is much lower than its average values of China and the world, and ~(232)Th is equivalent to its average value of China but much higher than its average value of the world. Except for small areas in Longmenshan folded belt and Emeishan-Washan faulted fold belt, the radiation level of Chengdu Economic Area is within the national limits of radioactive nuclides in building materials. This paper provides support for the reasonable and effective use of land and resources in Chengdu Economic Area and also supplies the necessary ref-erence for speeding up economic integration and sustainable development of cities.