CAJ | 학술논문

采用IED-3000R轻便型测氡仪，对四川阿坝地区土壤、空气中的氡气浓度开展初步调查。结果表明：（1）测区空气中氡气浓度较高，均在平均值185 Bq/m3附近；（2）所测得土壤的氡气浓度范围为2736～93486 Bq/m3，平均值为26021 Bq/m3，远远高于全国城市土壤中氡气浓度7300 Bq/m3的平均值，同时在156个土壤氡气浓度被测点中共有91个测点氡气浓度值超过20000 Bq/m3，而按照国家标准，对于民用建筑工程土壤中氡气浓度超过20000 Bq/m3要进行不同程度的防氡工程；（3）地质环境、土壤松散度、岩土性质、土壤含水率为影响阿坝地区土壤氡气浓度的主要因素。
채용IED-3000R경편형측동의，대사천아패지구토양、공기중적동기농도개전초보조사。결과표명：（1）측구공기중동기농도교고，균재평균치185 Bq/m3부근；（2）소측득토양적동기농도범위위2736～93486 Bq/m3，평균치위26021 Bq/m3，원원고우전국성시토양중동기농도7300 Bq/m3적평균치，동시재156개토양동기농도피측점중공유91개측점동기농도치초과20000 Bq/m3，이안조국가표준，대우민용건축공정토양중동기농도초과20000 Bq/m3요진행불동정도적방동공정；（3）지질배경、토양송산도、암토성질、토양함수솔위영향아패지구토양동기농도적주요인소。
By using an IED-3000 portable emanometer produced by Beijing Nuclear Instrument Plant,this pa-per conducted a preliminary investigation on the radon concentration of soil and air in Aba,Sichuan.The results reveal three aspects as follows:(1 )the radon concentration of air in the study area is around background value of 185 Bq/m3;(2)the radon concentration of soil ranges from 2,736 Bq/m3 to 93,486 Bq/m3 with average value of 26,021 Bq/m3,which is higher than the average value of the other domestic cities of 7,300 Bq/m3, and the average values of radon concentration in 91 measured points are over 20,000 Bq/m3 among 156 meas-ured points;(3 )the radon concentration of soil in five districts is sorted in descending order as Heishui>Maer-kang>Rangtang>Aba>Hongyuan.The radon concentration of soil in Aba is affected by geological environ-ment,soil porosity,geotechnical properties,moisture content of soil,and the radon concentration of soil in most districts of the study area is extremely high,thus it is necessary to take measures to control and lower indoor ra-don concentration of the study area.