Research on the stabilization treatment of clay slope topsoil by organic polymer soil stabilizer
Research on the stabilization treatment of clay slope topsoil by organic polymer soil stabilizer
复制标题
有机聚合物土壤稳定剂对粘土边坡表土的稳定处理研究
DOI：
10.1016/j.enggeo.2010.10.011
复制
发表时间：
2011-01-10
影响因子：
7.4
通讯作者：
Kamai, Toshitaka
中科院分区：
文献类型：
--
作者：
Liu, Jin;Shi, Bin;Kamai, Toshitaka
黏性边坡表土强度、水稳定性和抗侵蚀性较弱，易发生侵蚀。本文介绍了一种新型有机高分子土壤稳定剂STW，它是一种用于粘土边坡表土稳定处理的新型有机高分子土壤稳定剂。为了了解STW对粘性土稳定的影响，对未经处理和处理的土样进行了无侧限抗压强度、抗剪强度、水稳定性和抗侵蚀性能的室内试验，结果表明，STW土壤稳定剂可以显著提高粘性土的无侧限抗压强度、抗剪强度、水稳定性和抗侵蚀性能。无侧限抗压强度随养护时间的增加而增加，且变化主要发生在前24小时。随着STW添加量的增加，固化时间为48 h时，强度、水稳定性和抗冲蚀性能均有所提高，但在摩擦角情况下，变化不大。通过对稳定土的扫描电镜（SEM）分析，探讨了STW土壤稳定剂在粘性土中的稳定机理。最后，进行了STW稳定处理粘土边坡表土的现场试验，结果表明，STW土壤稳定剂用于粘土边坡表土的稳定处理，对于提高边坡表土的抗侵蚀能力，减少土壤流失，保护植被生长是有效的。因此，该技术在粘质边坡的表土防护中具有推广价值。(C) 2010 Elsevier B.V.版权所有
The topsoil of clayey slope is easy to erosion because it is weak in its strength, water stability and erosion resistance. A new organic polymer soil stabilizer, which was developed for the stabilization treatment of clay slope topsoil and was named as STW, was introduced in this study. In order to understand the effect of STW on the stabilization of clayey soil, laboratory tests on the unconfined compressive strength, shear strength, water stability and erosion resistance of untreated and treated soil specimens are performed, The results indicated that STW soil stabilizer can significantly increased the unconfined compression strength, shear strength, water stability and erosion resistance of clayey soil. The unconfined compression strength increased with the increasing of curing time and the variation mainly occurs in the first 24-hour. With the addition amounts of STW increasing, the strength, water stability and erosion resistance increased at the curing time being 48 h, but in the case of friction angle, no major change was observed. Based on the scanning electron microscopy (SEM) analysis of the stabilized soil, the stabilization mechanisms of STW soil stabilizer in the clayey soil were discussed. Finally, a field test of the stabilization treatment of clay slope topsoil with STW was carried out, and the results indicated that the STW soil stabilizer on the stabilization treatment of clay slope topsoil is effective for improving the erosion resistance of slope topsoil, reducing the soil loss and protecting the vegetation growth. Therefore, this technique is worth popularizing for the topsoil protection of clay slope. (C) 2010 Elsevier B.V. All rights reserved.