| 填埋场地电模型的电学特性 |
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| 引用本文： | 能昌信,董路,王琪,王彦文,黄启飞,薛咏海.填埋场地电模型的电学特性[J].中国环境科学,2004,24(6):0-0. |
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| 作者姓名： | 能昌信 董路 王琪 王彦文 黄启飞 薛咏海 |
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| 作者单位： | 1.中国矿业大学机电学院 北京100083;2.中国环境科学研究院固体废物污染控制技术研究所 北京100012;3.山东工商学院计算机系 山东烟台264005 |
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| 基金项目： | 国家“863”项目(2001AA644010) |
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| 摘 要： | 利用高压直流电法进行了填埋场人工合成衬层漏洞检测,当供电电压为400,350,300V时,改变供电方向,地电模型表现出不同的电学特征.结果表明,由于高密度聚乙烯和土壤充分接触,在其接触面上形成类似于PN结的导电膜.当膜下电极为负时,模型所表现出的容性特征远超过当膜下电极为正时所表现出的容性特征.探讨了这种导电膜的形成和机理,并得出电容的大小将随着衬层面积以及电压的增加而增长的结论.
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| 关 键 词： | 高密度聚乙烯 土壤 电解电容 PN结 |
| 文章编号： | 1000-6923(2004)06-0758-03 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2004年5月18日 |
The electricity characteristics of the earth - electricity model in landfill |
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| NAI Chang-xin,DONG Lu,WANG Qi,WANG Yan-wen,HUANG Qi-fei,XUE Yong-hai.The electricity characteristics of the earth - electricity model in landfill[J].China Environmental Science,2004,24(6):0-0. |
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| Authors: | NAI Chang-xin DONG Lu WANG Qi WANG Yan-wen HUANG Qi-fei XUE Yong-hai |
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| Institution: | NAI Chang-xin1,3,DONG Lu2,WANG Qi2,WANG Yan-wen1,HUANG Qi-fei2,XUE Yong-hai2 |
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| Abstract: | The earth-electricity model expressed different electricity characteristics when the direction of supply power was changed under 400V, 350V and 300V voltage, using high voltage direct current (DC) to detect the artificial synthetic liner leakage in landfill. A conductive membrane similar to PN junction was formed on the contacted surface between high density polyethylene and the ground soil. The capacitance characteristics of the model at negative electrode under the membrane was far more than that of the model at positive electrode under the membrane. The formation and mechanism of the conductive membrane with electrolytic capacitor feature was discussed in detail. The capacitance increased as the liner area and power increased. |
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| Keywords: | High density polyethylene (HDPE) soil electrolytic capacitor PN junction |
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