垃圾土电阻率特性试验研究

赵燕茹; 陈湘生; 黄力平; 周仲华; 谢强

doi:10.11779/CJGE201512010

垃圾土电阻率特性试验研究 English Version

赵燕茹^{1, 2},
陈湘生²,
黄力平²,
周仲华³,
谢强⁴

1. 哈尔滨工业大学深圳研究生院,广东深圳 518055 2. 深圳市地铁集团有限公司,广东深圳 518112;
3. 兰州大学西部灾害教育部重点实验室,甘肃兰州 730000,4. 重庆大学土木工程学院,重庆 400045

基金项目: 中国博士后科学基金第57批面上项目（2015M570296）; 中央高校基本科研业务费资助项目（106112013CDJZR200008,10611204CDZR200012）

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作者简介:
赵燕茹(1983- ),男,高级工程师,博士后,主要从事环境岩土工程方面研究与测试工作。E-mail: zhaoyanru54022@163.com。

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- 收稿日期: 2014-10-10
- 发布日期: 2015-12-19

Experimental study on electrical resistivity of municipal solid waste

1. Shenzhen Graduate School, Harbin Insitute of Technology, Shenzhen 518055, China;
2. Shenzhen Metro Group Co., Ltd., Shenzhen 18026, China;
3. Key Laboratory of Mechanics on Disaster and Environment in Western China, Lanzhou University, Ministry of Education, Lanzhou 730000, China;
4. College of Civil Engineering, Chongqing University, Chongqing 400045, China

摘要

摘要: 以重庆市长生桥垃圾填埋场作为研究对象,基于垃圾土颗粒导电性分类,通过室内试验测试了不同因素（添加不同溶液、孔隙率、含水率、温度等）影响下垃圾土电阻率变化特征。试验结果表明：当垃圾土中添加渗滤液、NaCl、ZnCl₂和柴油4种溶液时,垃圾土电阻率随垃圾土中孔隙率的增加均呈递减趋势;孔隙率一定时,随含水率的增加垃圾土中固液并联导电在垃圾土导电通路中的比例增大;渗滤液对垃圾土电阻率的影响在一定程度上受稀释作用控制,且随含水率的增加而减小;随着温度的升高,垃圾土的电阻率呈指数函数衰减趋势;含水率一定时,孔隙率的变化将引起垃圾土中3种导电模式的互相转化,且电阻率随孔隙率的增加呈幂函数减小趋势;利用高密度电阻率层析技术,对现场垃圾填埋体进行了电阻率实测,同时结合室内试验测试结果对电阻率剖面进行了分析;研究结果可为分析因降解引起的垃圾填埋体中渗滤液的富集状态和运移途径的变化,以及评价垃圾土内部结构的演化提供理论支持。
- 垃圾土 /
- 渗滤液 /
- 电阻率 /
- 含水率 /
- 孔隙率 /
- 温度
Abstract: Based on the classification of its particle sizes, the electrical resistivity properties of municipal solid waste (MSW), collected from Chongqing landfills are studied. The effects of various factors (solution, porosity, moisture content and temperature, etc.) on the electrical resistivity of MSW are tested indoors. The test results show that when more pollutants are added to the specimens, such as oil pollutant, NaCl, ZnCl₂ and leachate solution, a decrease trend is observed for the electrical resistivity with the increase of porosity in the waste. Supposing the porosity of landfills keeps constant, the proportion of bulk that the circuit of water and solid particles connects in parallel increases with the increase of moisture content in the waste. Meanwhile, the effect of leachate on the resisitivity mainly depends on the dilution degree of leachate, and a decrease is obtained for the electrical resistivity with the increases of moisture content in refuse. Temperature tests indicate that the correlation between electrical resistivity and temperature can be expressed as attenuation exponential function. When the moisture content keeps constant, three kinds of conductive models may be mutually transformed in the waste with the change of porosity of MSW, and it eventually causes the change of electrical resistivity. Finally, a high-density resistivity chromatography is applied in the field tests. The test results can be applied for analyzing the enriched degree and migration path of leachate in the waste mass due to the process of biodegradation of MSW, and they are in favor of evaluating the change of inter-structure of MSW.
- municipal solid waste /
- leachate /
- electrical resistivity /
- moisture content /
- porosity /
- temperature

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参考文献(33)

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垃圾土电阻率特性试验研究 English Version

作者简介: 赵燕茹(1983- ),男,高级工程师,博士后,主要从事环境岩土工程方面研究与测试工作。E-mail: zhaoyanru54022@163.com。

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Experimental study on electrical resistivity of municipal solid waste

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作者简介:
赵燕茹(1983- ),男,高级工程师,博士后,主要从事环境岩土工程方面研究与测试工作。E-mail: zhaoyanru54022@163.com。