高频电磁法结合高密度电法综合确定垃圾填埋场分布

Application of High Density Electrical Method and High Frequency Electromagnetic Method to Landfill Site Exploration

城市垃圾填埋造成的地下污染已成为影响城市环境和人民健康的重大问题,运用地球物理方法对地下垃圾填埋场进行高效探查是当前城市环境治理中的一项重要工作。为进一步提高填埋场地的探査效率,提出以高密度电法作为剖面测量控制、以高频电磁法(GEM-2仪器)作为面积性快速探测手段,对福建某地垃圾填埋场进行了快速平面探查工作。由高频电磁法得到测区电导率的平面分布特征,与两条关键剖面测量的高密度电法反演结果确定的边界具有很好的一致性,两者结合较好地推断了测区垃圾填埋场的分布边界。两种方法通过剖面和平面结合的测量方式提高了工作效率和综合解释结果的可信度,为类似问题的勘探和研究提供了实践依据。

Underground pollution caused by landfills has become an important issue affecting the urban environment and people's health.It is an important task in urban environmental management to use geophysical methods to efficiently explore underground landfills.In order to further improve the efficiency of landfill site exploration,this paper proposes that high density electrical method should be used as the control of profile measurement and high-frequency electromagnetic method(GEM-2 instrument)as the means of rapid area detection to carry out rapid plane exploration of a landfill site in Fujian province.The plane distribution map of the electrical conductivity is obtained by high frequency electromagnetic method,which is in good agreement with the boundary determined by the inversion results of the two key profiles measured by high-density electrical method.The boundary of the landfill site in the survey area is well inferred by the combination of the two methods.The combination of the two methods improves the work efficiency and the reliability of the integrated interpretation results through the combination of profile and plane surveying,which provides a practical basis for exploration and research of similar problems.