起伏地形下井一地联合电阻率观测含水陷落柱模型异常特征

针对在起伏地形的情况下，含水陷落柱的异常形态特征的系统研究不足的问题。本文采用井-地联合电阻率观测装置，用有限单元法对起伏地形下不同形态和位置的含水陷落柱模型进行正演计算，对正演的结果进行系统的分析。结果表明起伏地形对地下情况的勘探有较大的影响，含水陷落柱处于地形产生的低阻异常区域时产生的异常被掩盖，含水陷落柱处于地形产生的高阻异常区域时会产生新的低阻异常，并能根据新的低阻异常推断含水陷落柱模型位置，得到的系统对比分析的结果对于实际勘探有指导作用。

The anomaly of water-bearing collapse column through borehole-ground joint resistivity surveying system under undulating terrain

Aiming at the problem of insufficient systematic research on anomaly of water-bearing collapse column under undulating terrain. In this paper, the borehole-ground joint resistivity surveying system is used to forward calculate the water-bearing collapse column model with different shapes and position under undulating terrain by finite element method, and the forward results are systematically analyzed. The results show that the undulating terrain has a great influence on the exploration of underground conditions. The anomaly of water-bearing collapse column when the water-bearing collapse column is located in the low-resistance anomaly area generated by the terrain is covered up. When the water-bearing collapse column is located in the high-resistance anomaly area generated by the terrain, a new low-resistance anomaly will be generated, and the model position of the water-bearing collapse column model can be inferred according to the new low-resistance anomaly. The obtained results of systematic comparative analysis have guiding significance for actual exploration.