基于透明土试验技术研究土体渗透特性进展

Advances of soil permeability characteristics based on transparent soil experimental technique

根据国内外最新研究成果,综述了近年来基于透明土试验技术开展土体渗流特性研究的新进展。首先简述了透明土的试验原理以及几种常见透明土的特性和配制方法,重点分析了透明土与天然土体的相似性及其在研究土体渗流方面的优越性。通过对透明土试验技术与传统试验方法的比较,指出了利用透明土试验方法研究土体渗流场及渗透变形问题均可获得较好的结果,同时在研究土体中NAPL污染物运移分布方面也具有明显的优势。进一步提出,在土体渗流问题研究中,未来透明土试验技术的发展应该考虑重构三维空间的土体孔隙模型及解决土体多相耦合问题。

The experimental study on characteristics of soil permeability using transparent soil is reviewed. The experimental mechanism of transparent soil, the characteristics of the most common transparent soils and the mixing method are briefly introduced. The similarity between transparent soil and natural soil, the advantages of transparent soil experimental technique to study soil permeability are discussed. Comparing transparent soil experimental technique with traditional experimental method, better results could be obtained on soil seepage field and deformation by transparent soil experimental technique. It also shows great potential in study on the transportation and diffusion of NAPL pollution. The reconstruction of three-dimensional soil pore model should be used to reveal the multi-phase flows in soil in the future study.