基于高密度电法与地质测绘技术的水坝安全性评价OA
Safety Evaluation of a Dam Based on High-Density Electrical Method and Geological Mapping Technology
对水坝开展安全性评价具有重要的工程意义,应用地质测绘与高密度电法对大坝及周边环境进行勘察,经过地质数据处理获得构造解释的地质图,经反演处理的高密度电阻率数据生成坝区地下电阻率模型.结果表明:坝库底板基岩完整,局部存在风化现象;不同坝段均识别出渗流带、裂隙及饱水孔洞的低电阻率异常区.库底风化构造、裂隙和渗流区构成大坝过量失水的潜在通道,坝基中的孔洞对大坝安全形成潜在威胁.
Conducting safety evaluations for dams holds significant engineering importance.This study applies geological mapping and the high-density electrical method to investigate the dam and its surrounding environment.Through geological data processing,interpreted geological maps are obtained.Inversion processing of high-density resistivity data generates an underground resistivity model of the dam area.The results indicate:The bedrock of the dam foundation is intact,with localized weathering observed;low-resistivity anomaly zones,identified as seepage zones,fractures,and water-filled cavities,are detected in different dam sections.The weathered structures,fractures,and seepage zones at the reservoir bottom constitute potential pathways for excessive water loss from the dam,and cavities within the dam foundation pose potential threats to dam safety.
孙宇欢
陕西省石头河水电工程局,陕西宝鸡 712000
天文与地球科学
水坝地质测绘技术高密度电法渗流
Damgeological mapping technologyhigh-density electrical methodseepage
《陕西水利》 2026 (3)
115-117,3
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