Stoper Worker (Civil Engineering Construction)
すとーぱーこう
Industry & Occupation
Classification
Summary
Specialized worker who pressure-injects cement-based injection materials into excavation surfaces such as tunnels and dams to reinforce rock and provide waterproofing.
Description
Stoper workers, at tunnel and dam construction sites, drill injection holes, install packers, and pressure-inject cement-based materials to fill gaps and cracks in the rock for waterproofing. They handle drill perforation equipment, injection pumps, piping, and hoses, with management of injection pressure and volume being crucial. Based on geological survey results and construction plans, they determine injection locations and methods, thoroughly manage safety and health, and proceed with the work. On-site, the work involves confined spaces, high places, outdoors, and transporting heavy equipment, making team coordination essential. After construction, they record and report injection data and conduct quality checks. Flexible responses are required, such as additional repairs for water leakage points and adjustments to injection parameters.
Future Outlook
High demand from aging infrastructure renewal, tunnel transportation network development, and disaster recovery projects, with stable job opportunities expected in the future.
Personality Traits
Able to respond flexibly / Cautious and attentive to details / Good team player / Physically fit / Strong sense of responsibility
Work Style
Dispatched Contract Employee / On-Site Stationed / Outdoor Work / Shift Work / Team Work
Career Path
Apprentice Worker → Stoper Worker → Foreman/Site Leader → Construction Manager → Site Supervisor
Required Skills
Drill Operation / Injection Planning / Injection Pump Operation / Machine Inspection and Maintenance / Packer Installation
Recommended Skills
Civil Engineering Construction Management / Quality Control / Safety and Health Knowledge / Surveying and Marking Technology
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Adaptability | Because geological conditions and environments change easily, requiring flexible responses. |
| Attention to Detail & Accuracy | Because accuracy is required in managing injection volume and pressure, etc. |
| Physical Stamina & Endurance | Because physical strength is required for transporting heavy equipment and long hours of work. |
| Stress Tolerance | Because work in confined spaces or at heights requires stress tolerance during emergency responses. |
| Collaboration & Teamwork | Because work progresses in collaboration with multiple trades. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Creativity & Ideation | Because the work is mainly based on procedures and standards. |
Related Qualifications
- Civil Engineering Construction Manager (Grade 2)
- Foreman/Safety and Health Officer
- Oxygen Deficiency Hazard Supervisor
- Scaffolding Assembly Supervisor
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