| 改性土-膨润土竖向隔离墙材料的压缩及渗透特性试验研究 |
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| 引用本文： | 杜延军,范日东. 改性土-膨润土竖向隔离墙材料的压缩及渗透特性试验研究[J]. 岩土力学, 2011, 32(Z1): 49-54 |
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| 作者姓名： | 杜延军 范日东 |
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| 作者单位： | 东南大学 岩土工程研究所，南京 210096 |
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| 基金项目： | 国家自然科学基金(No.50878052,No.40972173); 教育部新世界优秀人才计划资助(No.NCET-09-0286); 江苏省科技支撑计划资助项目(No.BK2010060) |
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| 摘 要： | 膨润土系竖向隔离墙作为阻滞污染物的工程屏障有效且经济。采用沸石改性传统的土-膨润土竖向隔离墙存在抗腐蚀性弱等耐久性不足的同时，必须考虑其压缩、渗透等工程性质的变化。通过一维压缩固结试验，研究了不同沸石及膨润土掺量下膨润土系隔离墙材料的压缩固结和渗透特性。引入评价天然重塑黏土的压缩、渗透特性的归一化孔隙比e/eL和评价天然重塑黏土固有压缩特性的孔隙指数Iv两种归一化评价体系，进一步探讨了添加沸石改性前后膨润土系竖向隔离墙混合土的压缩和渗透特性。
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| 关 键 词： | 隔离墙 固结 压缩性 渗透性 |
| 收稿时间： | 2010-12-20 |
Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills |
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| DU Yan-jun,FAN Ri-dong. Compressibility and permeability behavior of two types of amended soil-bentonite vertical cutoff wall backfills[J]. Rock and Soil Mechanics, 2011, 32(Z1): 49-54 |
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| Authors: | DU Yan-jun FAN Ri-dong |
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| Affiliation: | Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | Soil-bentonite vertical cutoff walls are effective and economical as engineering barriers for geoenvironmental containment.The compressibility and permeability of zeolite-amended soil-bentonite vertical cutoff walls for the purpose of enhancing the chemical compatibility have not been well addressed.These two engineering properties of soil-bentonite backfills before and after amended with zeolite are assessed via a series of oedometer tests.The results are discussed using the generalized state parameter(i.e... |
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| Keywords: | cutoff wall consolidation compressibility permeability |
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