Non-Contact Monitoring Throughout the Tunnel Lifecycle
Continuous Deformation Tracking. Multi-Point Measurement. Enhanced Tunnel Safety.
Tunnels are exposed to structural deformation and changing ground conditions throughout their construction and operational life. Monitoring tunnel convergence, crown settlement, lining deformation, and clearance changes is essential for evaluating structural behavior and identifying potential risks.
Hu Entropy Tech provides an integrated tunnel structural health monitoring solution combining the Online Visual Tracking System, passive optical targets, active illumination, data transmission equipment, and a cloud-based monitoring platform.
Based on advanced Digital Image Correlation (DIC) technology, the system enables non-contact, multi-point displacement monitoring of selected locations within tunnels. Active illumination helps maintain image acquisition under low-light conditions, while passive optical targets provide reference points for continuous visual tracking.
Measurement data can be transmitted to the cloud platform for real-time visualization, historical trend analysis, and configurable alarm notifications.
The solution supports monitoring throughout the tunnel lifecycle, including construction, long-term operation, and nearby excavation or construction activities that may affect tunnel structures.
Key Monitoring Parameters
- Tunnel Convergence – Tracks changes in the relative positions of selected points across the tunnel cross-section to assess deformation.
- Crown Settlement – Monitors vertical displacement at the tunnel crown and other designated locations.
- Clearance Change – Tracks changes in internal tunnel clearance based on appropriately arranged monitoring points.
- Lining Deformation – Monitors displacement and deformation trends of selected tunnel lining sections.
Key Features
1. Non-Contact Visual Measurement
Uses optical measurement technology and passive targets to monitor tunnel deformation without requiring physical contact with the monitored structure.
2. Multi-Point Synchronized Monitoring
Tracks multiple optical targets within the camera’s field of view, supporting simultaneous displacement measurement at selected tunnel sections.
3. Active Illumination for Low-Light Environments
Integrated active illumination supports image acquisition in dark tunnel environments and helps maintain measurement visibility under challenging lighting conditions.
4. Continuous Deformation Tracking
Records displacement data over time, allowing engineers to analyze tunnel convergence, settlement, and structural deformation trends.
5. Remote Data Transmission and Cloud Access
Monitoring data can be transmitted to a centralized cloud platform for remote visualization, historical data review, and monitoring management.
6. Configurable Alarm Notifications
Configurable displacement thresholds help identify abnormal deformation trends and provide timely notifications for further engineering assessment.
7. Integrated Multi-Sensor Monitoring
Can be integrated with vibrating wire instruments, inclinometers, settlement sensors, crack meters, and industrial RTUs to support comprehensive tunnel monitoring.
Monitoring Throughout the Tunnel Lifecycle
Tunnel Construction Monitoring
- Tunnel Convergence Monitoring
- Crown Settlement Monitoring
- Excavation-Induced Deformation Monitoring
- Tunnel Lining Deformation Monitoring
Long-Term Operational Monitoring
- Tunnel Structural Deformation Tracking
- Lining Displacement Monitoring
- Internal Clearance Change Monitoring
- Long-Term Structural Behavior Assessment
Nearby Construction Impact Monitoring
- Adjacent Excavation Impact Monitoring
- Ground Movement Impact Assessment
- Tunnel Deformation During Nearby Construction
- Continuous Displacement Trend Analysis
Typical Applications
- Highway Tunnel Monitoring
- Railway Tunnel Monitoring
- Metro and Subway Tunnel Monitoring
- Tunnel Excavation and Construction Monitoring
- Tunnel Lining Deformation Monitoring
- Existing Tunnel Structural Health Monitoring
- Nearby Construction Impact Monitoring
- Underground Infrastructure Monitoring
System Architecture
Passive Optical Targets → Online Visual Tracking System + Active Illumination → Data Acquisition & Transmission → Cloud Monitoring Platform → Deformation Analysis & Early Warning
Additional geotechnical sensors and data acquisition devices can be integrated to provide complementary monitoring information.
An Integrated Solution for Tunnel Structural Safety
Hu Entropy Tech combines non-contact visual measurement, intelligent data acquisition, industrial communication, and cloud-based data management to support tunnel monitoring throughout construction and operation.
By enabling continuous multi-point displacement tracking and historical deformation analysis, the solution helps engineers understand structural behavior, identify abnormal changes, and make informed decisions about tunnel maintenance and safety management.
Monitor Continuously. Measure Without Contact. Support Safer Tunnels.
