Record the location, extent, and condition of water leakage in the tunnel lining, and prepare the basis for repair decisions and maintenance management plans.
Water leakage in tunnels leads to a combination of risks such as accelerated deterioration of the lining concrete, corrosion of rebar, freezing of the road surface, and erosion of backfill soil. Understanding "where and to what extent the leakage is occurring" is essential for determining the need for repairs and selecting appropriate methods. This service will record the location and extent of the leakage through visual inspection and photography, and evaluate the amount and condition of the leakage (such as seepage, dripping, or outflow). By documenting this in a deformation development diagram and preparing a report, we provide materials that can be used for planning repair strategies and for administrative reporting.
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basic information
【Investigation Method】 - Recording of leak locations and extent through visual inspection and photography - Classification of leak conditions (seepage, dripping, outflow, condensation, etc.) - Recording of leak locations and extent on deformation development diagrams - Confirmation of relationships with cracks, joints, and construction joints 【Main Items to Confirm】 - Leak location (distance from the pit entrance, cross-section position) - Evaluation of leak condition and quantity - Secondary deformation associated with leaks (relationship with rust water, deposits, and cracks) - Impact on the road surface (confirmation of freeze risk) 【Deliverables】 - Deformation development diagram (with recorded leak locations and extent) - Photo ledger (close-up photos confirming leak conditions) - Inspection report and condition assessment - Delivery: PDF report, photo data, Excel ledger, etc.
Price information
Individual estimate Costs vary depending on the content of the investigation, the scale of the facility, site conditions, and the type of deliverables. Please feel free to consult with us first.
Applications/Examples of results
【Purpose】 - Systematic recording of leakage conditions during regular tunnel inspections - Early detection and response to secondary damage caused by leaks - Establishing the basis for selecting repair methods (such as water stopping and backfilling) - Identifying areas at risk of road surface freezing during winter 【Examples of Achievements】 - A case where leakage points in mountain road tunnels were investigated and recorded across all sections - A case where areas at risk of road surface freezing due to leaks were identified, and priorities for winter measures were organized - A case where the relationship between leaks and back voids was investigated, and documentation for selecting repair methods was created - *Details of achievements will be provided in materials or upon inquiry.
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Company information
Since its establishment in 1966, East Japan Construction Consultant has been proposing "aha!" moments centered around surveying and design technology for many years. Starting with surveying and expanding into design, land acquisition, compensation, and infrastructure maintenance, we have worked as a comprehensive construction consultant to enhance our services. We have been engaged in the development and maintenance of social infrastructure that supports people's safety, security, and economic activities, including roads, rivers, ports, marine surveys, urban planning, and energy. Currently, in addition to our efforts in disaster prevention, mitigation, and national resilience, we are also focusing on digital transformation (DX) through initiatives such as BIM/CIM, AI, UAVs, and ROVs (underwater drones).
