Manager / Engineer - Geologist cum Instrumentation (Tunnel)
Larsen & Toubro Ltd
Work from Office
Full Time
Min. 5 yearsJob Description
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.
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