Dam, Slope & Geological Hazard Monitoring
Continuous distributed deformation, seepage, and vibration monitoring for dams, slopes, embankments, and landslide-prone areas using UW-FBG and uwDAS technology.
Industry Challenge
Dams, slopes, and embankments are exposed to gradual yet potentially catastrophic failure mechanisms — internal seepage, progressive sliding, foundation settlement, and earthquake-induced instability. Conventional inclinometers and piezometers provide only sparse point measurements that easily miss critical deformation zones.
Geological hazards such as landslides and rockfalls develop over months or years of progressive displacement, but once acceleration begins, rapid failure can occur within hours. The monitoring challenge demands distributed, continuous, high-sensitivity deformation sensing across the entire at-risk area — not just at a few instrumented boreholes.
Monitoring Objectives
Target measurement parameters, performance specifications, and sensing methods for dam, slope monitoring.
| Parameter | Target Specification | Method |
|---|---|---|
| Internal Deformation | Continuous inclination profile with 0.01° resolution | UW-FBG flexible inclinometer array |
| Surface Displacement | Sub-mm surface movement detection across slopes | UW-FBG strain cable arrays |
| Seepage / Pore Pressure | Distributed temperature anomalies from seepage flow | UW-DTS temperature profiling |
| Crack Monitoring | Multi-point crack opening detection | FBG displacement sensors at joints |
| Dynamic / Seismic Response | Vibration monitoring during earthquakes and blasting | uwDAS distributed acoustic sensing |
| Early Warning | Real-time alert at pre-defined displacement thresholds | Automated Ray-Sensor alert platform |
System Architecture
The geohazard monitoring system deploys UW-FBG flexible inclinometer chains in boreholes across the dam body or slope, with surface strain cables in critical zones. For embankments and long linear infrastructure, uwDTS fiber provides distributed temperature sensing for seepage detection. uwDAS fiber captures micro-seismic and vibration signatures. Data from all sensing channels is aggregated at the RS-DSS/DTS interrogator and transmitted to the cloud-based Ray-Sensor platform for real-time analysis, threshold-based alerts, and trend forecasting.
Typical Deployment
Field deployment steps for a complete dam, Slope & Geological Hazard Monitoring system.
- UW-FBG flexible inclinometer arrays in boreholes (0.5–1 m sensor spacing)
- Surface strain cables laid along slope contours and embankment crests
- UW-DTS fiber buried in dam foundation for seepage temperature anomaly detection
- uwDAS fiber installed along the dam crest for seismic/micro-vibration monitoring
- RS-DSS/DTS multi-channel interrogator housed in an on-site shelter
- Solar-powered remote monitoring stations for off-grid landslide sites
- Ray-Sensor cloud platform with automated SMS/email early warning alerts
Customer Value
Key benefits delivered by Ray-Sensor's dam, Slope & Geological Hazard Monitoring solution.
Related Application Cases
Real-world deployments demonstrating dam, Slope & Geological Hazard Monitoring in action.
Three Gorges Dam Monitoring
UW-FBG flexible inclinometer system for continuous deformation profiling of the world's largest dam.
Chongqing Beibei Ground Displacement
High-precision ground displacement monitoring for landslide early warning in geologically active areas.
Finland MS Dam Monitoring
Multi-parameter UW-FBG system for comprehensive dam health assessment on a Finnish dam project.
South-North Water Transfer Embankment
Continuous embankment displacement monitoring for one of the world's largest water transfer projects.
Wushan Rockfall Monitoring
Early detection of rock mass instability for landslide and rockfall prevention in mountainous regions.
Bazimen Automated Landslide
Solar-powered automated landslide monitoring with real-time alerting for remote field deployment.
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