DAVID SANCHEZ Posted February 26, 2020 Report Share Posted February 26, 2020 Good afternoon I have a question - How can I measure la presure in a mining tunnel? to do PQ survey - what is the procedure? thanks! Quote Link to comment Share on other sites More sharing options...
Craig Stewart Posted March 6, 2020 Report Share Posted March 6, 2020 PQ Surveys are measured with an accurate anemometer (airflow velocity meter), a manometer (differential pressure meter) or barometer (atmospheric pressure meter), and a distance measuring device (tape measure or laser measure). Once pressure and airflow are measured, Atkinson's formula can be used to determine resistance. The methods can vary with different practitioners, however a great summary is provided in McPherson's Subsurface Ventilation Engineering book available here https://www.mvsengineering.com/files/Subsurface-Book/MVS-SVE_Chapter06.pdf The attached file by John Rowland is also an excellent reference to barometric surveys. Barometric Surveys Resistance JR.pdf Quote Link to comment Share on other sites More sharing options...
John Bowling Posted April 20, 2020 Report Share Posted April 20, 2020 Hi David, I also second both the above resources- they give an excellent background on PQ surveys. If you're looking for more info or need a hand with a PQ survey, feel free to reach out to me at jbowling@srk.com. I can send you a small presentation on how to do it; we have videos on airflow and pressure measurement, and I can recommend instruments. I can also come help you conduct a PQ survey at your mine. Cheers, John Quote Link to comment Share on other sites More sharing options...
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