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渗漏作为土石坝的一种主要隐患,会对坝体安全造成威胁。为了快速、经济、有效的探测渗漏通道在土石坝中的分布情况,制作了内含渗漏隐患的土石坝模型,应用三维电阻率成像诊断技术和三维体渲染图像处理技术,分析了渗漏隐患在土石坝蓄水条件下的成像特点。结果表明,在土石坝预设渗漏隐患位置电阻率图像中会出现低阻异常区与之对应;体渲染图像处理技术有利于对土石坝进行全面透视,提高渗漏通道三维电阻率成像诊断精度;采用三维电阻率成像诊断技术对土石坝渗漏进行探测具有可行性和可靠性,对于推动水利工程病险诊断技术的进步具有极其重要的现实意义。
Seepage as a major hazard of earth-rockfill dam, will pose a threat to the safety of the dam. In order to quickly and economically detect the distribution of seepage channels in earth-rockfill dam, an earth-rock dam model with hidden leakage was fabricated. The three-dimensional resistivity imaging diagnosis technology and three-dimensional volume rendering image processing technology were used to analyze the leakage Impacts on the imaging characteristics of earth-rock dam under water storage conditions. The results show that low resistivity anomalies will appear in the resistivity image of pre-set potential leakage of earth-rock dam, and the body rendering image processing technology is helpful for the comprehensive fluoroscopy of earth-rock dam to improve the diagnostic accuracy of leakage resistivity imaging It is feasible and reliable to detect the leakage of earth-rock-dams using the three-dimensional resistivity imaging diagnosis technology, which is of great practical significance for promoting the progress of the diagnosis technology of the risk of hydraulic engineering.