高密度电法在水库渗漏检测中的应用

Application of High Density Resistivity Method to Reservoir Leakage Inspection

渗漏是水库的常见病害,但由于地质条件复杂,其位置及渗径较难被准确发现。目前高密度电法作为一种对低阻异常具有较高敏感性的无损检测方法,常被用于地质勘查中。为探究高密度电法在水库渗漏检测中的应用效果,以某水库渗漏为例,采用偶极-偶极方式对其渗漏进行检测,通过分析电阻率变化找到渗漏部位,并结合现场钻探结果进行对比分析。结果表明漏水点、溶洞存在位置、溶蚀裂隙较发育带都与此次高密度电法偶极-偶极式的检测方式的检测结果高度吻合,验证了高密度电法在水库渗漏检测中的有效性和可行性。

The location and permeability of reservoir leakage,a common disease of reservoir,are difficult to be discovered accurately due to complex geological conditions.As a nondestructive detection method highly sensitive to low-resistance anomalies,high-density resistivity method is often used in geological prospecting at present.To investigate the effect of high-density resistivity method in detecting reservoir leakage,we adopted the dipole-dipole detection method for the nondestructive inspection of leakage of a reservoir as a case study.By analyzing the resistivity change together with on-site drilling results,we obtained the leakage position and analyzed the cause of reservoir leakage.The leakage position,cave location,and developed zones of corrosion fissures are highly consistent with inspection results by the high-density resistivity method,indicating that the method is efficient and feasible in reservoir leakage detection.