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ERT技术界定卫生填埋场边界的试验研究 被引量:4

Experimental Study on Mapping the Border of Sanitary Landfill by ERT Technology
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摘要 界定卫生垃圾填埋场边界有助于场地环境的维护和管理,采用电阻率二维层析成像技术中的3种装置排列(测深、温纳、偶极-偶极)对高阻体上表面特征进行试验模拟,并通过电阻率二维层析成像技术对垃圾填埋场边界的电性特征进行研究,在此基础上开展了现场勘查.结果表明:在由测深和温纳2种装置排列所得到的二维反演图像中,高阻体的上表面与高阻区相切,误差达到25%,表明2种排列不能进行精确定位;而偶极-偶极的反演图像中高阻体的上表面在低阻区与高阻扩散末端的分界点上,反演精度较高,误差在5%以内. Determining the boundary of a sanitary landfill is helpful for field environment maintenance and management.Three arrays(sounding array,Wenner array and dipole-dipole array) were implemented and compared using electrical resistivity tomography technology.The electrical character of the landfill boundary was investigated through the performance of 2D high density electrical resistivity tomography(ERT),and scene investigation was carried out based on this.The inverse results of a field experiment conducted with sounding and Wenner arrays indicate that the higher resistance area is tangential to the upper high resistance surface.Because of a 25% error,they are not perfect arrays to identify the position of the landfill boundary.In contrast,the dipole-dipole array is more accurate,with an error lower than 5% in determining the boundary.The inverse results show that the upper surface of the high resistance is at the demarcation point of the low resistance and the end of the high resistance diffusion.
出处 《环境科学研究》 EI CAS CSCD 北大核心 2010年第3期277-281,共5页 Research of Environmental Sciences
基金 国家高技术研究发展计划(863)项目(2007AA061303) 国际合作项目(2007DFA20790)
关键词 电阻率层析成像(ERT) 填埋场边界 高密度聚乙烯(HDPE) 偶极-偶极排列 electrical resistivity tomography(ERT) landfill border high density polyethylene(HDPE) dipole-dipole array
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参考文献21

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