Ground Support Cycles Require
23 Documented Steps Per Round
The Challenge
Shotcrete thickness verification is inconsistent
Design specifies minimum shotcrete thickness per support class. Nozzlemen apply shotcrete by experience and thickness is verified by probe at random locations. Paper records show spot checks but cannot prove coverage across the full excavation profile.
Rock bolt installation records lack location data
Each rock bolt has a specified length, diameter, grouting requirement, and plate torque. Paper logs record bolt counts per round but not the exact position in the crown or sidewall. Pattern compliance is assumed, not verified.
Convergence data reaches engineers too late
Convergence monitoring points are read daily or weekly. Paper readings go to the office for plotting. By the time the geotechnical engineer sees a trend, the excavation has advanced multiple rounds past the problem area.
Support class changes not linked to face mapping
Ground conditions at the face determine the support class. Face mapping records and support installation records are on separate forms. Nobody can quickly verify that the support class matched the actual ground conditions encountered.
The POD Advantage
Voice-documented support installation
Speak shotcrete thickness readings, rock bolt details, and steel set spacing as you install them. POD links every measurement to the round number and station for complete support records.
Bolt position mapping
Rock bolt locations documented in the tunnel cross-section with length, type, grouting confirmation, and plate torque. Pattern compliance verified against the design drawing for every round.
Real-time convergence alerts
Convergence readings entered in the field trigger immediate analysis. POD alerts the geotechnical engineer when displacement rates exceed trigger levels before the next round is excavated.
Face map to support class linking
Face mapping records linked directly to the support class decision and installation records. POD creates a continuous geological and support record from portal to breakthrough.
Ground Support Intelligence
“We had a convergence reading that showed 15mm in 24 hours and the geotechnical engineer did not see it until the weekly report. By then we had advanced 4 more rounds with the same support class. POD would have triggered an alert at the first reading.”
— Geotechnical Engineer, SEM Tunnel Contractor
Industry-Specific KPIs That Update Themselves
POD tracks hundreds of KPIs from a 5-minute voice report. Here are just 2 of them.
Safety Performance
Earned Value Performance
Both cost and schedule under pressure
These update in real time from a 5-minute voice report. No spreadsheets. No data entry.
Frequently Asked Questions
Document Every Round of Ground Support
See how POD tracks shotcrete, rock bolts, and convergence data for complete ground support documentation.