Evaluation and control of the geo-environmental impact due to environmental chemicals

研究了几种化学物质对地球环境的影响，以尽量减少对土壤和地下水的污染。主要研究结果如下：(1)评价了酸雨对稳定土和非稳定土理化性质和工程性质的影响。建立了对工程性能有重要影响的稳定土中和作用的预测方程。(2)对稳定土中碱对环境的影响进行了实验和分析评价。提出了减少碱对地下水影响的方法。(3)从地质环境影响的角度，对稳定的生活垃圾飞灰和生活垃圾焚烧灰试样进行了批浸和柱浸试验。分析了垃圾填埋场重金属浸出对环境的影响。(4)综述了土工膜衬垫、粘土衬垫和复合衬垫等填埋衬垫的性能，提出了其评价方法。提出了“垃圾填埋”的概念，通过回收大量的废物和挖掘的剩余土壤来创造新的环境。

Geo-environmental impact due to several chemicals was studied to minimize the soil and groundwater contamination. The main results from this study can be summarized as follows : (1) Effect of acid rain on the physico-chemical and engineering properties of stabilized and unstabilized soils was evaluated. The equations to predict the neutralization of stabilized soil, which significantly affects the engineering properties, was proposed. (2) Environmental impact due to alkali from the stabilized soil was experimentally and analytically evaluated. The method to minimize the impact of alkali on groundwater was proposed. (3) Batch and column leaching tests were conducted on the specimens of stabilized MSW fly ash and sewage incinerated ash from the view of geo- environmental impact. Environmental impact of leaching heavy metals leaking from landfill sites was analyzed. (4) The performance of landfill bottom liners (geomembrane liner, clay liner, and composite liner) was reviewed and its evaluation method was proposed. "LANDFILL" concept, to create the new environment by reclaiming a huge amount of waste materials and excavated surplus soils, was proposed.