Application of 3D Electrical Resistivity Tomography for Diagnosing Leakage in Earth Rock-Fill Dam
- 1 School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
- 2 School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
- 3 School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
- 4 School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
- 5 School of River & Ocean Engineering, Chongqing Jiaotong University, Chongqing, China
Abstract
The leakage occurs during operation of the dam in Liuhuanggou reservoir. It’s a threat to the safety of the people’s lives and property in downstream. In order to eliminate the hidden danger of reservoir, ensure the safety of the dam, play better the function of flood control and water storage of the reservoir etc., we apply the 3D electrical resistivity tomography detecting technology and volume rendering image processing technology, make the measurement in field, process the data and combine the field survey to find out the leakage channels inside the dam. The results show that the 3D resistivity images appear the low resistivity zone corresponding with the leakage channels. There are two main leakage channels that come from different location inside the dam. It is feasible to diagnose the leakage in earth rock-fill dam by applying 3D electrical resistivity tomography.
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