Ground Conditions Change Every Round
Your Report Records None of It
Ground conditions change every excavation round. Your daily report records “excavation advanced 12 meters” — no face map, no support decisions, no ground class. POD captures face mapping, TBM parameters, rock bolt patterns, and convergence data in one 5-minute voice report.
The Documentation Gaps Underground
Four areas where tunnel daily reports fail — every one of them traceable to data that exists on site but never makes it from the heading to the report.
Face conditions change every round — your report records none of it
Ground conditions change every excavation round. Your daily report records "excavation advanced 12 meters" — no face map, no support decisions, no ground class. When conditions differ from the geotechnical baseline report, there is no documentation trail for differing site condition claims.
Ground support installation undocumented between design and as-built
Rock bolt patterns, shotcrete thickness, steel set spacing, and lattice girder installation are logged on paper forms that never connect to the daily report. When the inspector asks whether the installed support matches the prescribed ground class, nobody can prove it without digging through binders.
TBM parameters captured by the machine — disconnected from the daily report
The TBM logs thrust, torque, penetration rate, cutter head rotation, and annular grout volume. This data exists in the PLC historian, but the daily report says "advanced 14 rings." Machine performance context that explains production gains or losses never reaches management.
Water inflow and convergence data not linked to construction activities
Groundwater inflow rates, probe hole results, and convergence pin readings are tracked by the geotechnical engineer on separate spreadsheets. The daily report that describes what construction happened during an inflow event shows no water data, no convergence trends, no trigger level alerts.
Paper Tunnel Logs vs. POD Underground Reports
Side-by-side comparison of what your current tunnel report captures versus what POD delivers every shift.
Paper Tunnel Logs
POD Underground Reports
Tunnel Longitudinal Section — Portal to Face
Excavation advances from portal. Ground support elements animate behind the face. Geological zones change color as the tunnel passes through alluvium, sandstone, shale, and granite.
Underground Progress Metrics — Face to Portal
Real POD KPI components rendering with sample tunnel operation data. SiteReadiness tracks face condition and ground support status. CrewUtilization measures underground crew deployment across headings and shifts.
Tunnel Face Readiness & Ground Conditions
Site Readiness
Underground Crew Utilization
Crew Utilization
Template Highlights
Purpose-built for TBM and drill-and-blast tunneling with 282+ structured documentation fields covering face mapping, ground support, and hydrogeological monitoring.
Face Mapping Dashboard
Round-by-round ground conditions with rock type, discontinuity spacing, RQD, water inflow, and ground class documentation from portal to face
Ground Support Tracker
Rock bolt patterns, shotcrete thickness, steel sets, lattice girders, and wire mesh — each round verified against prescribed support class
TBM Performance Analytics
Thrust, torque, penetration rate, cutter wear, segment erection, and annular grout volumes with shift-over-shift trending
Hydrogeological Monitoring
Probe hole results, water inflow rates, dewatering pump status, and groundwater level tracking with inflow event correlation
Convergence & Settlement
Convergence pin readings, extensometer data, and surface settlement with trigger level monitoring and trend analysis per chainage
Safety & Ventilation
Atmospheric monitoring, ventilation readings, emergency refuge status, and confined space entry documentation per OSHA Subpart S
“We hit a fault zone at chainage 380 and had to change ground class from III to V mid-shift. Our paper daily report for that day said ‘poor ground encountered, additional support installed.’ No RQD data, no face sketch, no record of the engineering decision to upgrade support class. The differing site conditions claim took 14 months to resolve because we couldn’t prove what we saw at the face that day. With POD, every round has a face record with ground class, support installed, and the decision trail.”
— Tunnel Project Manager, Heavy Civil Contractor (3.2 km twin bore, TBM excavation)
Frequently Asked Questions
Stop Losing Geotechnical Records Between Rounds
See how POD’s 282-field tunnel template documents face conditions, TBM parameters, ground support, and convergence monitoring in one voice report underground.
Last updated: March 2026