【摘要】 城市垃圾填埋场渗漏是土壤和地下水污染的重要来源。本文介绍了高密度电阻率法 (HDR)、瞬变电磁法 (TEM )、地质雷达法 (GPR)、地温法在北京市两个垃圾填埋场检测垃圾渗漏液的扩散范围、扩散深度的效果。结果发现垃圾场在堆放多年后 ,都不同程度存在渗漏液对土壤和地下水的污染。被污染的土壤和地下水呈低电阻率特征 ,视电阻率在 1 0Ω·m左右可定性为被渗漏液污染 ,垃圾场渗出液的实测电阻率均在0 4 0Ω·m左右 ,而自来水的电阻率均在 32Ω·m左右。比较了各方法的效果并结合钻孔资料 ,发现高密度电阻率法在探测土壤与地下水污染方面效果显著 ,与瞬变电磁法的结果具有良好的相关性更多还原

【Abstract】 Municipal refuse is the main contamination source of soil and groundwater. Geophysical methods, such as Direct current (DC) resistivity geo electrical sounding, electromagnetic sounding , ground penetrating radar and geothermy survey, can be used to map the extent of soil and groundwater contamination in the landfill sites of Beijing. The results of DC show about 10 Ohm·m apparent resistivity values in soil which has been contaminated and only about 0.40 Ohm·m resistivity in leachate. It is found that HDR is very effective in detecting the contamination from soil and groundwater, and is also very correlative with the results of TEM.更多还原