A scaled test model for predicting the temperature field in a coal mine stope with a U-shaped ventilation system
Abstract：Abstract： A scale test rig was constructed to model heat transport within a coal mine stope. The stope temperature distribution during underground mining was predicted from the model. Dimensionless relationships ar^2,xr/ur^2=ar^3dnr^2/ur=xr/Pfrand xr/urTr=1/qr were proposed as an accurate way to reproduce temperature gradients in the stope. These relationships are based on equations describing heat diffusion. Starting from reasonable estimates of the independent vari- ables and scaled heat source values the temperature distribution was derived. On site measure- ments compared to simulation data for the temperature distribution suggest agreement between the two sets of values. It is shown that the temperature declines as rising air moves along the air inlet toward the air return of the working face. The temperature peaks from 20 to 30 meters from the goal center line on the tail gate side. The experimental apparatus does a reasonable job of reproducing the actual heat transfer in a mine stope.
Keywords：goafsimilarity ratiotemperature distributiontest riginternal heat source
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 31-36 )