垃圾填埋场斑脱土衬里可行性评价

简文星; 嘉门雅史; 金山民政

Volume 28 Issue 5

Sep. 2003

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2003 > 28(5): 568-574

JIAN Wen-xing, Kamon Masashi, Kanayama Masatami, 2003. Feasibility Evaluation of Landfill Bentonite-Enhanced Liners. Earth Science, 28(5): 568-574.

Citation:

JIAN Wen-xing, Kamon Masashi, Kanayama Masatami, 2003. Feasibility Evaluation of Landfill Bentonite-Enhanced Liners. Earth Science, 28(5): 568-574.

JIAN Wen-xing, Kamon Masashi, Kanayama Masatami, 2003. Feasibility Evaluation of Landfill Bentonite-Enhanced Liners. Earth Science, 28(5): 568-574.

Citation:

JIAN Wen-xing, Kamon Masashi, Kanayama Masatami, 2003. Feasibility Evaluation of Landfill Bentonite-Enhanced Liners. Earth Science, 28(5): 568-574.

PDF( 416 KB)

Feasibility Evaluation of Landfill Bentonite-Enhanced Liners

1.
Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
2.
Department of Global Environmental Engineering, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan
3.
Geo-Research Institute, Osaka 550-0012, Japan

Received Date: 2003-05-18
Publish Date: 2003-09-25

Abstract

Abstract

In the first part of this paper, the falling head permeability tests were conducted on bentonite-enhanced liner (BEL) specimens (sand-bentonite and clay-bentonite mixtures) to obtain the hydraulic conductivity. The results show that the hydraulic conductivity of clay-bentonite is about 6.0×10^-9—3.0×10^-8cm/s, and that of sand-bentonite about 1.0×10^-9—3.0×10^-9cm/s. Compared with the standard hydraulic conductivity used in Japan (1.0×10^-6 cm/s), the hydraulic conductivity of both clay-bentonite and sand-bentonite is much lower. Then, the water retentivity and water migration tests were performed on the two liner specimens to evaluate the water retention and migration properties from saturated/unsaturated base soil. Based on the above tests, direct shear tests were conducted to obtain the internal shear strength of BEL specimens and the interface shear strength between BEL and base soil under five different water control conditions. Triaxial shear tests were also conducted on the two liner specimens to obtain the total and effective shear strength. Test results show that pore water in the underlying base soil has great potential to migrate to the BELs, resulting in a significant increase in water content of BELs, and the shear strength of both BEL internal and BEL/base interface tends to decrease with the increase of water content in BELs. Finally, the slope stability of a typical canyon solid waste landfill related to the two liners under various conditions was analyzed with the obtained shear strength parameters. Landfills at a gentle slope (with the total angle of the slope not greater than 20 degree) do not fail in both cases of sand-bentonite liner and clay-bentonite liner. Therefore, sand-bentonite and clay-bentonite mixtures are suitable for landfill bottom liners.

FullText(HTML)

References(15)

References

[1]	Koerner R M, Soong T. Stability assessment of ten large landfill failures[A]. In: Zornberg J G, Christopher B R, eds. Advances in transportation and geoenvironmental systems using geosynthetics[C]. Reston: American Society of Civil Engineers, 2000. 1-38.
[2]	Mitchell J K, Seed R B, Seed H B. Kettleman hills waste landfill slope failure. Ⅰ : Liner system properties[J]. J Geotech Engrg, 1990, 116(4): 647-668. doi: 10.1061/(ASCE)0733-9410(1990)116:4(647)
[3]	Seed R B, Mitchell J K, Seed H B. Kettleman hills waste landfill slope failure. Ⅱ : Stability analysis[J]. J Geotech Engrg, 1990, 116(4): 669-690. doi: 10.1061/(ASCE)0733-9410(1990)116:4(669)
[4]	Eid H T, Stark T D, Evans W D, et al. Municipal solid waste slope failure. Ⅰ : Waste and foundation soil properties[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 126(5): 397-407. doi: 10.1061/(ASCE)1090-0241(2000)126:5(397)
[5]	Stark T D, Eid H T, Evans W D, et al. Municipal solid waste slope failure. Ⅱ : Stability analysis[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 126(5): 408-419.
[6]	Kamon M, Katsumi M, Jian W, et al. Evaluation of landfill stability relating to clay liners[A]. In: Japanese Geotechnical Society, ed. Proceedings of the fourth Japan national symposium on environmental geotechnology[C]. Tokyo: Japanese Geotechnical Society, 2001. 297-302.
[7]	Kamon M, Katsumi T, Kanayama M, et al. Stability of solid waste landfills along clay liners[A]. In: Japan Society of Civil Engineers, ed. Proceedings of the second international summer symposium[C]. Tokyo: Japan Society of Civil Engineers, 2000. 249-252.
[8]	Imamura S. Geotechnical investigation of natural barrier properties at low level radioactive solid waste landfill site[D]. Kyoto: Kyoto University, 1996.
[9]	Jo H Y, Katsumi T, Benson C H, et al. Hydraulic conductivity and swelling of non-prehydrated GCLs permeated with single species salt solution[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2001, 127(7): 557-567. doi: 10.1061/(ASCE)1090-0241(2001)127:7(557)
[10]	Black D K, Lee K L. Saturating laboratory samples by back pressure[J]. Journal of the Soil Mechanics and Foundations Division, 1973, 99(SM1): 75-93.
[11]	Jian W, Kamon M, Kanayama M. Shear strength behavior of two landfill clay liners[J]. Journal of China University of Geosciences, 2002, 13(3): 260-265.
[12]	简文星. 浅谈日本固体废弃物的管理与处置技术[J]. 环境科学动态, 2002, (4): 1-5. https://www.cnki.com.cn/Article/CJFDTOTAL-HJKD200204000.htm JIAN W X. Some remarks on management and disposal technology of solid waste in Japan[J]. Environmental Science Trends, 2002, (4): 1-5. https://www.cnki.com.cn/Article/CJFDTOTAL-HJKD200204000.htm
[13]	Hirano K, Takematsu T, Ono S, et al. Settlement characteristics of incinerated ash in Amagasaki offshore disposal site[A]. In: Kansai Branch of the Japanese Geotechnical Society and International Institute for Advanced Studies, ed. Fourth Kansai international geotechnical forum-creation of new geo-environment[C]. Kyoto: Kansai Branch of the Japanese Geotechnical Society, 2000. 107-112.
[14]	Daniel D E. Geotechnical practice for solid waste disposal[M]. New York: Chapman & Hall, 1993. 252-253.
[15]	Abramson L W, Lee T S, Sharma S, et al. Slope stability and stabilization methods[M]. New York: John Wiley & Sons Inc, 1996. 410.