Diesel Airflow — Roof Bolter
Statutory-style airflow requirement for a roof bolter from engine power and the jurisdiction's rate.
Bolters work the freshly-cut face where the duct ends — the most ventilation-starved real estate in the mine. Their modest 85 kW still needs ~4 m³/s, and the duct's last-10-metres delivery (after leakage) is exactly what this requirement must be checked against.
Formula
Note: Mine ventilation is statutory and life-safety territory: airflow quantities, gas limits and re-entry times must be set by the registered ventilation engineer/manager under your jurisdiction's mining regulations — this calculator is a planning and training aid.
Statutory-style airflow requirement for a roof bolter from engine power and the jurisdiction's rate. A free mine ventilation & air quality tool — no sign-up, no upload, instant results in your browser.
About Diesel Airflow — Roof Bolter
Diesel Airflow — Roof Bolter computes the governing relationship Q = P_engine × rate × n_simultaneous live as you type. Bolters work the freshly-cut face where the duct ends — the most ventilation-starved real estate in the mine. Their modest 85 kW still needs ~4 m³/s, and the duct's last-10-metres delivery (after leakage) is exactly what this requirement must be checked against. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Diesel Airflow — Roof Bolter
- 1Enter your values — Engine rated power, Airflow rate per kW, Machines operating simultaneously (sensible defaults are pre-filled).
- 2Read the live results: Required airflow.
- 3Check the "with your numbers" line to see Q = P_engine × rate × n_simultaneous substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Diesel Airflow — Roof Bolter?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula Q = P_engine × rate × n_simultaneous with authoritative sources cited on the page (MSHA 30 CFR Parts 57/75 — Ventilation standards; McPherson, M.J., Subsurface Ventilation and Environmental Engineering)
- ✓Bolters work the freshly-cut face where the duct ends — the most ventilation-starved real estate in the mine.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the diesel airflow — roof bolter use?+
It evaluates Q = P_engine × rate × n_simultaneous, exactly as published. Sources: MSHA 30 CFR Parts 57/75 — Ventilation standards; McPherson, M.J., Subsurface Ventilation and Environmental Engineering. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
Bolters work the freshly-cut face where the duct ends — the most ventilation-starved real estate in the mine. Mine ventilation is statutory and life-safety territory: airflow quantities, gas limits and re-entry times must be set by the registered ventilation engineer/manager under your jurisdiction's mining regulations — this calculator is a planning and training aid.
When is this calculator the right tool for the job?+
Statutory-style airflow requirement for a roof bolter from engine power and the jurisdiction's rate. A free mine ventilation & air quality tool. Their modest 85 kW still needs ~4 m³/s, and the duct's last-10-metres delivery (after leakage) is exactly what this requirement must be checked against. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
Related tools
- Diesel Airflow — Underground Grader
- Diesel Airflow — Personnel Carrier
- Diesel Airflow — Scissor Lift / Charger
- Diesel Airflow — Shotcrete Sprayer
- Diesel Airflow — District Fleet Total
- Diesel Airflow — BEV Conversion Saving
- Gas Dilution — Methane (CH₄)
- Asphalt Tonnage — Pothole / Patch Program
- Erection Rate — Industrial Platforms/Pipe Racks
Related Manufacturing tools
Spindle Speed Calculator — Aluminum 6061
Carbide starting RPM for milling Aluminum 6061: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● LiveSpindle Speed Calculator — Mild Steel 1018
Carbide starting RPM for milling Mild Steel 1018: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● LiveSpindle Speed Calculator — Stainless 304
Carbide starting RPM for milling Stainless 304: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● Live