More light does not automatically make a mine route easier to see. Evaluate the LED strip from workers' normal viewing positions, including low or seated positions, and check whether shielding and placement reveal hazards without placing a bright source in the line of sight.
Review the route from the worker's position
A mounting position that looks comfortable from the center of a tunnel may be harsh when someone bends to inspect a fitting. Check walking directions, steps, changes in floor level and the places where workers look toward equipment. Include vehicle cabs and other relevant operating positions in the assessment.
NIOSH's mine lighting handbook discusses glare and visual performance. Use that background to frame a site mock-up, not to infer a universal mounting height. Wall reflectance, dirt, route geometry and the intended task all affect the useful result.
Aim light at the task surface
Mounting close to a wall can produce a bright line while leaving the walking surface poorly lit. Consider the emitting direction and the shadow created by trays, pipes and handrails. A diffuser may soften the visible points, but it also changes output and distribution. Evaluate the completed assembly rather than a bare strip sample.
Protective shielding should not trap heat or obstruct the intended distribution. If it becomes part of an approved assembly, confirm whether the modification is permitted. Select a mechanically sound mounting detail that retains the intended orientation after vibration, cleaning and routine work around the route.
Make the mock-up a comparison, not a demonstration
Install representative lengths in two feasible positions and compare them from the same viewing points. Record the supply settings, mounting details and ambient conditions so the result can be repeated. Include a section with typical obstacles and realistic surface conditions. Clean demonstration walls can overstate the benefit expected underground.
Look for visible edges, shadows, reflections and direct discomfort, alongside the specified measurements. If one arrangement needs more power but produces more glare, its extra output is not necessarily useful. Agree the acceptance observations with the people who maintain and use the route before ordering the full quantity.
Mock-up observations to record
- Viewing direction and eye position for each observation.
- Visibility of changes in level and relevant obstacles.
- Direct view of the emitting surface and bright reflections.
- Effect of realistic dirt, obstructions and wall reflectance.
- Mounting details, input power and measurement positions.
Questions buyers ask
Is a diffused strip always glare-free?
No. A long bright diffuser can still cause discomfort. Its luminance, position and surrounding contrast matter.
Should every route use the same mounting height?
No. Use a consistent engineering method, but adapt the mounting position to the task, geometry and approved site requirements.
Related engineering guides
- Mine lighting specification: the complete project brief
- A Commissioning Checklist for Mining LED Strip Installations
- Maintaining Mining LED Strips: Find the Cause Before Replacing the Reel
Technical references
Use the following source alongside the project specification; it does not certify a ZBL product or replace site engineering approval.
