Open AccessResearch on the application of Magnetic Resonance Sounding in dam leakage detection
Author(s) -
Fan Li,
Kaitian Li,
Kai Lü,
Zhenyu Li
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/569/1/012097
Subject(s) - depth sounding , hydrogeology , leakage (economics) , aquifer , groundwater , permeability (electromagnetism) , geology , levee , environmental science , geotechnical engineering , embankment dam , inversion (geology) , petroleum engineering , geophysics , seismology , oceanography , genetics , tectonics , membrane , biology , economics , macroeconomics
Reservoir dams and embankments are important water conservancy facilities, which play an important role in promoting the economy and protecting people’s safety. 95% of the reservoir dams in China are made of earth or stone. Among them, the leakage of dam body or dam foundation is common. At present, most of the detection methods of dam leakage are indirect, and the physical parameters such as conductivity, density and temperature used by them have no definite relationship with groundwater. Magnetic Resonance Sounding is a promising geophysical method, by which hydrogeological information such as position, water content, porosity and permeability of aquifer can be obtained directly. This method has a high application prospect in dam leakage detection. In this paper, a theoretical model is established based on the typical dam structure, and the nuclear magnetic resonance response of the dam leakage is studied by numerical simulation. This paper also analyses the influence of the reservoir water on the nuclear magnetic resonance signal. The validity and feasibility of the method are verified by the inversion of the field data in Nanchuan embankment.