Speaker
Description
To address the challenge of internal structural monitoring and anomaly detection in large hydraulic structures such as earth-rock dams, this study investigates a non-destructive detection approach based on cosmic-ray muons. A field experiment was conducted at the auxiliary dam of the Mangshan Reservoir in Hunan Province, China, using a muon detection system based on plastic scintillator panels. Continuous measurements were carried out to record the muon flux passing through the dam body and the surrounding mountain, and three-dimensional density reconstruction was performed based on the acquired data. The results demonstrate that Muography can effectively reveal the density distribution within the dam body and the adjacent rock mass. Several density anomaly regions were successfully identified, and their spatial distribution shows good agreement with known engineering structures and geological conditions. The study indicates that Muography can detect and spatially locate internal density anomalies within an earth-rock dam without interfering with its normal operation. This work provides a practical example of applying cosmic-ray Muography to hydraulic engineering structures and highlights its potential as a complementary technique for dam safety monitoring.