基于温度场和电阻率成像的土石坝渗漏诊断试验研究

通过对3种不同类型的土石坝模型进行温度场试验和电阻率成像试验,把不同的反演结果同模型实际渗漏通道进行对比,对结果的精度进行评价,比较两种方法各自的优缺点,为实际土石坝渗漏隐患探测提供一定的参考。温度场试验能够比较准确的表示出渗漏方向但还不能准确表示出渗漏通道的位置。电阻率成像试验能够准确的表现出渗漏通道的位置,同时试验结果非常直观。通过对比分析表明,在土石坝渗漏诊断方面电阻率成像方法明显优于温度场法,电阻率成像法比温度场法试验过程更方便、精度更高。

Experimental Study on Leakage Diagnosis of Earth-rock Dam Based on Temperature Field and Resistivity Tomography

Through comparing the different inversion results with actual leakage passages by temperature field and resistivity imaging tests for three different models of earth-rock dam,the accuracy of the results are evaluated,and the advantage and disadvantage of the two methods are compared,which could offer some reference for hidden defects detection of the earth-rock dam.The temperature field test could accurately express the direction of the leakage passages but could not accurately get the position of them.But the resistivity tomography experiment could accurately get the position of the leakage passages.Through comparing the results of two experiments,it is showed that the resistivity imaging method is more convenient and precise,and significantly better than the temperature field method.