垂直防渗墙横剖面电阻率数值与物理模拟研究

就防渗墙这一特定结构和所处地球物理环境，进行了电场有限元数值模拟和物理模拟；基于模拟结果，论证了横剖面电阻率法在防渗墙质量检测中应用的可行性、应用特点和应用条件．结果表明：垂直于防渗墙走向的平行测深剖面构成了防渗墙墙体的似电阻率测深数据，该数据能够反映截渗墙的漏点分布情况；与周围土介质有较大电阻率差异的高阻截渗墙可以用电阻率横剖面法进行普查，若有必要，可用弹性波CT等勘探技术进行详查工作．

Numerical and physical simulation of resistivity of transverse profiles of vertical cut-off walls

In consideration of the special structure of cut-off walls and their typical geophysical environment, the finite element simulation and physical model test were performed on their electric field to verify the feasibility of the transverse profile resistivity method applied to the inspection of the quality of cut-off walls and the characteristics of and condition for its application. The research shows that the parallel resistivity sounding profiles perpendicular to cut-off walls provide the data of pseudo conductivity of the walls, which can reflect the distribution of leakage points in cut-off walls, and that the cut-off wall with high-resistivity, significantly different to that of the surrounding soil, can be generally inspected by the transverse profile resistivity method, and if necessary, other precise methods, such as the high-frequency elastic wave-based CT technology can also be taken for further inspection.