Manager / Engineer - Geologist cum Instrumentation (Tunnel)

1. Instrumentation Planning & Design Coordination

• Review project specifications, geotechnical baseline reports, instrumentation drawings, and monitoring plans.
• Identify the type, location, and quantity of instruments required for TBM, NATM, or cut?and?cover tunneling.
• Coordinate with design and geotechnical teams to finalize monitoring layouts and trigger levels.
• Prepare method statements, installation procedures, and quality control checklists.

2. Installation, Calibration & Commissioning

• Supervise and ensure proper installation of geotechnical instruments such as
  • Inclinometers
  • Piezometers (standpipe, VW, pneumatic)
  • Settlement markers
  • Extensometers
  • Convergence monitoring targets
  • Load cells & strain gauges
  • Tilt meters & crack meters
  • Seismic and vibration monitors
• Conduct calibration, testing, and commissioning of all sensors and data loggers.
• Ensure instruments are installed as per QA/QC standards and relevant project specifications.

3. Monitoring & Data Acquisition

• Manage automatic and manual data acquisition systems (ADS/DAS).
• Perform daily/weekly/monthly monitoring as per the instrument type.
• Ensure continuous data flow from remote monitoring systems and address communication failures.
• Maintain logs of ground movements, settlement, vibration levels, groundwater fluctuations, and structural loads.
• Validate and clean raw data before submission.

4. Data Analysis & Reporting

• Analyze monitoring data to detect abnormal trends or threshold exceedance.
• Inform project managers, geotechnical engineers, and construction teams when trigger limits are crossed.
• Prepare daily, weekly, and monthly instrumentation monitoring reports.
• Support decision-making in ground control, NATM support class modification, and TBM operational adjustments.

5. Safety & Risk Management

• Ensure instrumentation systems comply with safety requirements, especially in urban tunneling.
• Participate in risk assessments and identify early warning indicators of potential ground failure.