2D电阻率正反演成像在水平和垂直模型上的异常响应研究

2D电阻率成像技术近年来被广泛应用于工程、水文、环境和矿产等领域，在实际应用中它具有多种的装置类型，不同的装置类型对特定的地质情况有不同的应用效果.本文通过采用Wenner、Wenner-Schlumberger和dipole-dipole三种排列装置在一个水平和一个垂直模型上正演模拟和块反演，揭示了不同的排列装置在水平结构和垂直结构的异常响应，并对高阻体和低阻体进行了模拟.结果显示当采用Wenner,Wenner-Schlumberger和dipole-dipole数据采集技术时，不同的模型结构异常响应有明显的不同，三种排列类型对地下低阻体的分辨能力均高于高阻体，Wenner装置和dipole-dipole装置分别对水平层状结构和垂直结构有较好的分辨力，wenner-Schlumberger装置对水平层状结构有好的分辨力，对垂直结构有中等的分辨能力.

2D resistivity tomography for anomalous response study on horizontal layered and vertical model

Two-dimensional resistivity tomography survey has been applied for engineering environmental hydrogeological and mineral study.In practice,it includes a various of type of configuration.Each congfiguration would obtain different application effect for some specified geological conditions.In this paper,a forward numerical modeling and a blocky inversion were performed on a horizontal layered model and a vertical model with Wenner Wenner-Schlumburger and dipole-dipole array.The differience of response between the horizontal layered model and the vertical model was detected for three arrays,high resistivity bodies and low resistivity bodies were also considered.The result shew differience of responses on the models with appling Wenner Wenner-Schlumberger and dipole-dipole arrays.All configurations have better resolution for low resistivity bodies than for high resistivity bodies.Wenner array provided better resolution on the horizontal layered model.Dipole-dipole array provided better resolution on the vertical model.Wenner-Schlumberger array provided better resolution on the horizontal layered model and moderate resolution on the vertical model.