| 好氧降解对垃圾土沉降影响试验及沉降模型 |
| |
| 引用本文： | 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. |
| |
| 作者姓名： | 金佳旭 丁前绅 刘磊 威巍 张雄 张柴 |
| |
| 作者单位： | 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 |
| |
| 基金项目： | 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)。 |
| |
| 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 |
| 收稿时间： | 2021-04-02 |
| 修稿时间： | 2021-10-22 |
Effect of aerobic degradation on landfill settlement and development of a constitutive model |
| |
| 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. |
| |
| Authors: | JIN Jia-xu DING Qian-shen LIU Lei WEI Wei ZHANG Xiong ZHANG Chai |
| |
| Institution: | (School of Civil Engineering,Liaoning Technical University,Fuxin,Liaoning 123000,China;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China;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;IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science,Wuhan,Hubei 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China;Wuhan Environment Investment&Development Co.,Ltd.,Wuhan,Hubei 430019,China;School of Mechanics and Engineering,Liaoning Technical University,Fuxin,Liaoning 123000,China) |
| |
| 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. |
| |
| Keywords: | waste soil anaerobic condition aerobic condition settlement model |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
