Using BL-CH4 Drone methane detector for the estimate of methane- controlled releases from mine ventilation system

Experiment schedule

The aim of this experiment was to compare measurement (M1-M3) results of the BL-CH4 Drone methane detector (LMDS) under controlled releases from the Barbara experimental mine ventilation system.

Methods of measuring methane leak/concentration

using a DJI Matrice 350 RTK unmanned aircraft and BLV CH4 Drone methane detector (blvgeotech.com)

Summary

1. Data collected during the experiment were usually normally distributed (Gaussian), with exceptions in the gamma distribution.

2. The position of the methane laser detection sensor has Drone methane detectora significant impact on the measurement process.

3. The coefficients of variation (CV) remain the same in each scenario, but when measuring near the edge they are much smaller (15%) than when measuring from a height of 5 meters (37%), regardless of gas concentration.

4. During measurements with the sensor at a height of 5 meters above the diffuser, must betaken to ensure that the diode does not encounter any obstacles, otherwise, measurements in an oblique arrangement may have significant errors.

5. The obtained results confirmed the high sensitivity of the BLV CH-4 Drone methane detector to changes in the concentration of released gas also the effectiveness of the data recording using the   app.