摘要
文章在多层地基固结理论与污染物运移理论相结合的基础上,提出了污染物在成层弹性地基中运移的一维数学模型,其最大特点是考虑了土体受力变形对污染物运移的影响,然后给出了所建模型的解析解,并将计算结果与太湖疏浚污染底泥堆场的实测结果作了比较分析。结果表明堆场的地基土层对太湖疏浚底泥中的污染物具备足够的阻隔能力,在堆场的使用年限内不会对周围环境造成二次污染。实际天然防渗层中以成层土居多,故推导出的污染物在成层土中运移模型具有重要的工程价值和现实意义。
In this paper a one-dimensional mathematical model on the contaminant transportation in layered elastic foundation has been established on the basis of the consolidation theory of layered elastic foundation and the transportation theory. The main feature of the model is the consideration of the effect of soil deformation under loads on contaminant transportation. The analytical solution of the model is also given. The simulation of the model is finally compared with the results measured in a disposal sites for the contaminated dredged sediments from the Taihu Lake. The results show that the ground soil of the disposal site has enough obstruction ability, and will not bring secondary pollution in the fixed number of years. Since the layered soil is abundant in the factual impermeable layer, the transport model of contaminant in the layered soil is of important engineering value and factual significance.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2008年第5期97-100,共4页
Hydrogeology & Engineering Geology
基金
国家自然科学基金资助项目(50678003)
北京市自然科学基金项目(kz200710005004)
高等学校博士点基金(20060005012)
关键词
成层弹性地基
固结
污染物
运移
layered elastic foundation
consolidation
contaminant
transportation
