好氧降解对垃圾土沉降影响试验及沉降模型

doi:10.16285/j.rsm.2021.0473

岩土力学 ›› 2022, Vol. 43 ›› Issue (2): 416-422.doi: 10.16285/j.rsm.2021.0473

好氧降解对垃圾土沉降影响试验及沉降模型

金佳旭¹，丁前绅^{1, 2, 3}，刘磊^{2, 3, 4}，威巍^{2, 5}，张雄⁶，张柴^{2, 3, 7}

1. 辽宁工程技术大学土木工程学院，辽宁阜新 123000；2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北武汉 430071； 3. 中国科学院武汉岩土力学研究所污染泥土科学与工程湖北省重点实验室，湖北武汉 430071； 4. 中国科学院武汉岩土力学研究所-香港理工大学固体废弃物科学联合实验室，湖北武汉 430071； 5. 中国科学院大学，北京 100049；6. 武汉环境投资开发集团有限公司，湖北武汉 430019； 7. 辽宁工程技术大学力学与工程学院，辽宁阜新 123000

收稿日期:2021-04-02 修回日期:2021-10-22 出版日期:2022-02-11 发布日期:2022-02-22
通讯作者: 刘磊，男，1982年生，博士，研究员，主要从事固体废弃物安全处置与资源化利用的研究工作。E-mail: lliu@whrsm.ac.cn E-mail:jjx_605@163.com
作者简介:金佳旭，男，1984年生，博士，副教授，主要从事环境岩土工程方面的研究。
基金资助:
国家自然科学基金（No.41977254, No.51974145）；湖北省自然科学基金杰出青年基金（No. 2021CFA096）；湖北省自然科学基金——创新群体项目（No.2019CFA012）；岩土及地下工程教育部重点实验室（同济大学）开放课题(KLE-TJGE-B2001)。

Effect of aerobic degradation on landfill settlement and development of a constitutive model

JIN Jia-xu¹, DING Qian-shen^{1, 2, 3}, LIU Lei^{2, 3, 4}, WEI Wei^{2, 5}, ZHANG Xiong⁶, ZHANG Chai^{2, 3, 7}

1. School of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 3. Hubei Province Key Laboratory of Contaminated Sludge and Soil Science and Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 4. IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Wuhan, Hubei 430071, China; 5. University of Chinese Academy of Sciences, Beijing 100049, China; 6. Wuhan Environment Investment & Development Co., Ltd., Wuhan, Hubei 430019, China; 7. School of Mechanics and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000, China

Received:2021-04-02 Revised:2021-10-22 Online:2022-02-11 Published:2022-02-22
Supported by:
This work was supported by the National Natural Science Foundation of China (41977254, 51974145), the Hubei Science Foundation for Distinguished Young Scholar (2021CFA096), the Foundation for Innovative Research Groups of Natural Science Fund of Hubei Province (2019CFA012) and the Open Fund of Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education (Tongji University) (KLE-TJGE-B2001).

摘要/Abstract

摘要： 好氧降解作用对垃圾土沉降变形特性的定量评价是预测和评估好氧降解稳定化的重要基础。以武汉市典型生活垃圾组成配比人工制作的垃圾土为样本，开展了不同通风条件下垃圾土沉降特性试验，分析了好氧通风频率对沉降变形的影响。试验结果表明：厌氧条件沉降速率趋于稳定后，好氧通风可显著提高垃圾土的沉降速率；上、中、下3层垃圾在高通风频率下垃圾土沉降比低通风频率下沉降效率分别提高了145%、150%、100%；建立了厌氧-好氧联合型沉降模型，通过与试验监测得到的沉降值对比，初步验证了模型的可靠性。研究结果为好氧通风过程中垃圾土沉降稳定性评估提供了理论依据。

关键词: 垃圾土, 厌氧条件, 好氧条件, 沉降, 模型

Abstract: The quantitative evaluation of the settlement characteristics of landfills by aerobic degradation is an important basis for predicting and evaluating the stabilization of aerobic degradation. The settlement characteristics of man-made waste soil with typical household waste composition ratio in Wuhan were tested under different ventilation conditions, and the influence of aerobic ventilation frequency on settlement deformation was analyzed. The results showed that aerobic ventilation significantly increased the settlement rate of municipal solid waste under anaerobic condition when the settlement rate was stable. The settlement efficiency of the upper, middle and lower layers of waste soil at high ventilation frequency was increased by 145%, 150% and 100% respectively, compared with the settlement efficiency at low ventilation frequency. Also, an anaerobic-aerobic combined settlement model (ANACS model) was established, and the reliability of the model was verified by comparing against the settlement values obtained from experimental monitoring. Outcomes from this study provide a theoretical basis for the evaluation of the settlement stability of waste soil in aerobic ventilation process.

Key words: waste soil, anaerobic condition, aerobic condition, settlement, model

中图分类号:

TU 196.2

金佳旭, 丁前绅, 刘磊, 威巍, 张雄, 张柴, . 好氧降解对垃圾土沉降影响试验及沉降模型[J]. 岩土力学, 2022, 43(2): 416-422.

JIN Jia-xu, DING Qian-shen, LIU Lei, WEI Wei, ZHANG Xiong, ZHANG Chai, . Effect of aerobic degradation on landfill settlement and development of a constitutive model[J]. Rock and Soil Mechanics, 2022, 43(2): 416-422.

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好氧降解对垃圾土沉降影响试验及沉降模型

Effect of aerobic degradation on landfill settlement and development of a constitutive model

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