We provide comprehensive support for inspection tasks necessary for tunnel maintenance management, from regular inspections of road tunnels to detailed investigations.
Regular inspections of road tunnels (mandatory inspections every five years) are fundamentally based on close visual inspections and sound tests of the lining concrete, requiring specialized knowledge and a safety management system. This service conducts close visual inspections and sound tests in accordance with the inspection guidelines of the Ministry of Land, Infrastructure, Transport and Tourism, and prepares condition assessments, deformation development diagrams, photo records, and inspection reports. We provide comprehensive support for necessary inspection tasks across all phases of tunnel maintenance management, from regular inspections to detailed surveys before repairs and support for developing longevity plans.
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basic information
【Inspection Methods】 - Close visual inspection (in accordance with the Ministry of Land, Infrastructure, Transport and Tourism inspection guidelines) - Sound testing (confirmation of floating and delamination) - Systematic recording of cracks, leaks, and deformations - Condition assessment (evaluation of damage level and countermeasure classification) 【Deliverables】 - Deformation development diagram (recording deformations across all sections) - Photo ledger (format that specifies deformation location, type, and condition) - Inspection report (Ministry of Land, Infrastructure, Transport and Tourism format) - Summary materials for condition evaluation and repair priority 【Applicable Tunnels and Delivery】 - Road tunnels (various construction methods such as NATM, sheet piling, open-cut, etc.) - Also applicable to waterway tunnels and utility ducts (subject to consultation) - Delivery: PDF report, photo data, Excel ledger, etc.
Price information
Individual estimates vary based on the content of the survey, 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】 - Regular tunnel inspections (mandatory inspections every 5 years) - Confirmation of areas at risk of spalling (sound testing) - Detailed investigation before repairs (determining repair methods and scope) - Emergency inspections (confirmation of current conditions after abnormal reports or damage discovery) 【Examples of Achievements】 - Regular inspections of tunnels managed by local governments (contracting multiple tunnels at once) - Evaluation of spalling risk in aging tunnels through sound testing - Detailed investigation of leakage areas and support for selecting repair methods - *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).
