L2 Concerns Detail Editor
Concern #462 | Geotechnical Surprise / Ground Conditions
Title
Geotechnical Surprise / Ground Conditions
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Description
Unforeseen geology or groundwater conditions undermine design assumptions and productivity for tunnelling and shaft works.
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Origin
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Desired Outcome
Ground risks are understood early with mitigation and contingency aligned to realistic confidence levels.
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What Could Go Wrong
Late discovery drives redesign, delay, cost escalation, safety exposure, and claims.
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Current Situation
Ground model exists but uncertainty remains until works expose real conditions; interface between investigation and design can drift.
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Strategy Narrative (JSON)
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Proposed Strategy
Define ground risk owners; ensure investigation findings are integrated into design; maintain a live ground risk log; set clear escalation triggers; link to schedule risk and contingency.
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Action Strategy (JSON List)
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Cause
Incomplete/uncertain ground investigation and interpretation
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Event
Actual ground conditions differ materially from assumptions
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Consequence
Rework + delay + cost growth + increased safety risk
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Notes
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