Improving stopping construction to minimize leakage
-
Published Date:Jul 2012
-
Source:J Mine Vent Soc S Afr. 65(3):16-21.
Details:
-
Personal Authors:
-
Keywords:
-
Pubmed ID:26379366
-
Pubmed Central ID:PMC4567546
-
Description:The proper sealing of stoppings is an important step in reducing leakage from the intake to the return airways. Leakage and the subsequent loss of ventilation resulting from improperly sealed stoppings can lead to unhealthy and unsafe working conditions. The research presented in this paper investigates the total leakage of a stopping, including air leakage through the stopping, at the stopping perimeter, and through the coalbed. The study also examines sealing considerations for stoppings that are constructed under roof control screen, the effects that wooden wedges had on inhibiting efficient application of polyurethane foam sealant, and airflow leakage through the surrounding coal. The work involved building a stopping in a dead end room of the NIOSH Safety Research Coal Mine and then pressurising the room using compressed air. Stopping leakage was evaluated by measuring air pressure loss in the enclosed room due to the air leakage. Part of the research utilises a diluted soap solution that was applied to the stopping and the surrounding coal to detect air leakage signified by bubble formations. The results show that stopping leakage can be minimised with proper sealing.
-
Document Type:
-
Collection(s):
-
Supporting Files:
image/jpeg image/gif image/jpeg image/gif image/jpeg text/plain image/gif image/jpeg image/gif image/jpeg image/gif image/jpeg image/gif
No Related Documents.
You May Also Like: