大地电导率平面成像法和电阻率成像法在天津某土壤重金属污染区探测中的应用

Application of Ground Conductivity Plane Imaging Method and Resistivity Imaging Method in Detection of a Soil Heavy Metal Polluted Area in Tianjin

该文介绍了利用大地电导率平面成像法和电阻率成像法联合探测重金属污染物的案例。首先采用大地电导率仪进行面积性盲探,利用视电导率信息圈定污染物大致水平扩散情况,然后采用电阻率成像法进行详探,根据剖面电阻率特征确定其扩散深度范围,并结合视电导率和电阻率信息综合推断出污染物三维扩散情况。该工程实例说明,利用大地电导率平面成像法和电阻率成像法,探测重金属污染物具有可行性和可靠性。

In this paper,a case of a detection of heavy metal pollutants by using the ground conductivity plane imaging method and resistivity imaging method is presented.Firstly,the ground conductivity instrument is used for blind exploration in area,and the approximate horizontal diffusion of pollutants is delineated by using visual conductivity information.Then,the resistivity imaging method is adopted to the detailed exploration,and the diffusion depth range can be determined according to profile resistivity characteristics,and the three-dimensional diffusion of pollutants are comprehensively deduced based on the information of apparent conductivity and resistivity.The feasibility and reliability of ground conductivity plane imaging method and resistivity imaging method of this paper are illustrated by an engineering example.