Stability Analysis and Control Measures of a Sanitary Landfill with High Leachate Level
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 147, Issue 10
Abstract
A sanitary landfill with significant sliding indications was studied through field investigations and numerical analyses. A translational deformation mode was discovered, and the leachate level of the landfill reached approximately 0.8 times the height of the waste body, which was extremely adverse for stability. Subsequent analyses revealed that the sliding surface started from the top of the landfill slope, developed along the liner system, and ended at the toe of the slope. To improve the stability of the landfill slope, a vertical drainage system was constructed. The leachate of the drainage wells was extruded into the header pipe by high-pressure air so that the possible clogging of pumps could be prevented. The effect of the new drainage system was verified by the subsequent decrease in leachate level and horizontal displacement rate. This case reveals that the vertical drainage system is an effective control measure for unstable running landfills.
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Data Availability Statement
All data, models, and code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
Much of the work described in this paper was supported by the National Natural Science Foundation of China under Grant Nos. 41725012 and 41931289. The authors would like to greatly acknowledge all these financial supports and express their most sincere gratitude.
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Journal of Geotechnical and Geoenvironmental Engineering
Volume 147 • Issue 10 • October 2021
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© 2021 American Society of Civil Engineers.
History
Received: Sep 3, 2020
Accepted: Jun 10, 2021
Published online: Aug 10, 2021
Published in print: Oct 1, 2021
Discussion open until: Jan 10, 2022
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