TOUGH2在低中放核素地下水迁移模拟中的应用与改进  

Modification of TOUGH2 codes and its application in simulating the migration of multiple radionuclide components in groundwater system

作　　者：张亮[1] 吴吉春[1] 祝晓彬[1] 徐月平[2] 

机构地区：[1]南京大学地科院水科学系,南京210093 [2]苏州热工研究院有限公司,江苏苏州215004

出　　处：《工程勘察》2013年第6期38-42,65,共6页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金项目(41030746;41172207);环保公益性行业专项(201009009;201009011)

摘　　要：本文在TOUGH2源程序的基础上,改进了用于模拟放射性核素在饱和-非饱和地下水中运移的模块EOS7R,使之可以同时计算多种核素组分。改进后的程序经检验运行正常。本文同时设计一个理想算例,考虑多种常见低中放核素,按半衰期与分配系数等特征分类比较。结果表明,吸附作用是核素通过包气带过程中的主要影响因素。本文提出的针对TOUGH2源程序的改进思路,实现了多种核素组分模拟的目的,并且有效节省了计算时间。The software TOUGH2 is implemented on the problem of migration of radionuclide component in the unsaturated-saturated groundwater system. Further more, the codes are modified to extend the number of radionuclide components that could be calculated at the same time. The results of the new codes are identical to the EOS7R. An ideal example is calculated to test a number of radionuclide components with different half-lives and participation coefficients. The results show that the adsorption plays the main role in the unsaturated zone. The modifying thought for TOUGH2 codes is presented, which brings about the simulation with multiple radionuclide components and saves the calculation time effectively.

关 键 词：积分有限差分法 放射性核素 数值模拟 TOUGH2 多组分 

分 类 号：P641.2[天文地球—地质矿产勘探]