土壤加固技术及其发展

提出并区分了土壤加固、土壤稳定和土壤固化的概念,得出土壤固化和土壤稳定既有区别,又有交叉重叠的部分,但它们都同属于土壤加固的范畴。综述了目前主要的土壤加固技术的方法、原理及其发展,包括机械力加固、热处理加固、化学加固、加筋加固和注浆加固。其中,化学加固中的土壤固化剂技术在近几十年发展迅速,有大量研究成果和工程应用;阐述了钙基类与非钙基类固化剂的种类、特点和加固机理,分析了新型非钙基类固化剂应用现状及其原因;介绍了生物注浆加固技术的方法和原理。

Soil reinforcement techniques and their evolvement

The concepts of soil reinforcement,soil stabilization and soil solidification were presented.and their relations were discussed. Soil stabilization and soil solidification,belonging to the field of soil reinforcement,are two different concepts,but they have some same overlapped contents.Methods,principles and evolvement of current main soil reinforcement techniques were summarized,including mechanical reinforcement,heat treatment reinforcement,chemical reinforcement,reinforced soil and grouting reinforcement.Soil stabilizer technique included in chemical reinforcement has made a fast progress in recent several decades,having lots of research productions and application cases.The sorts,characteristics and mechanisms of calcium-based and non-calcium-based soil stabilizers were summarized.The causes that new non-calcium-based soil stabilizers can not be used widely were analyzed.The method and principle of bio-grouting technique were introduced,too.