Results of the cyclic triaxial testing on mechanically-biologically treated waste.

IF 3.7 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL

Waste Management & Research Pub Date : 2025-05-01 Epub Date: 2024-07-27 DOI:10.1177/0734242X241261964

Tuo Li, Zhenying Zhang, Youwen Zhang, Wenjie Chen

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引用次数: 0

Abstract

Accurate assessment of the dynamic strength characteristics of mechanically-biologically treated (MBT) waste is crucial for the construction and safe operation of landfill sites. Herein, samples of MBT waste from the Hangzhou Tianziling landfill were collected and subjected to consolidated undrained cyclic triaxial tests under four confinement levels and six cyclic stress ratios (CSRs). Under cyclic loading, the MBT waste exhibited a critical CSR. If the CSR exceeds the critical value, the MBT waste specimen rapidly undergoes deformation and failure. Dynamic strength of MBT waste decreases with an increase in the number of cyclic vibrations and increases with an increase in confining pressure. Considering the influence of cyclic vibrations and confining pressure, a formula for dynamic strength in terms of cyclic vibrations and confining pressure has been established. The dynamic shear strength parameter ranges for MBT waste were obtained under different seismic magnitudes. We compared the dynamic and static shear strength parameters of MBT waste and municipal solid waste. These study findings can serve as a reference for the dynamic stability analysis of MBT waste landfills.

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机械生物处理废物的循环三轴测试结果。

准确评估机械生物处理（MBT）垃圾的动态强度特性对于垃圾填埋场的建设和安全运营至关重要。本文收集了杭州天子岭垃圾填埋场的机械生物处理垃圾样品，并在四个约束水平和六个循环应力比（CSR）下进行了固结排水循环三轴试验。在循环加载下，甲基溴垃圾表现出临界 CSR。如果循环应力比超过临界值，甲基溴废料试样会迅速发生变形和破坏。MBT 废料的动态强度随着循环振动次数的增加而降低，随着约束压力的增加而增加。考虑到循环振动和约束压力的影响，建立了循环振动和约束压力的动态强度公式。在不同的地震震级下，获得了 MBT 废弃物的动态剪切强度参数范围。我们比较了 MBT 废弃物和城市固体废弃物的动态和静态剪切强度参数。这些研究结果可作为 MBT 垃圾填埋场动态稳定性分析的参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Waste Management & Research 环境科学-工程：环境

CiteScore

8.50

自引率

7.70%

发文量

232

审稿时长

4.1 months

期刊介绍： Waste Management & Research (WM&R) publishes peer-reviewed articles relating to both the theory and practice of waste management and research. Published on behalf of the International Solid Waste Association (ISWA) topics include: wastes (focus on solids), processes and technologies, management systems and tools, and policy and regulatory frameworks, sustainable waste management designs, operations, policies or practices.