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| Y type Ventilation system design and ventilation resistance measurement |
| Yang Yulong |
| Zheneng Maijialiang Mining Industry Corporation Ltd., Datong Mining Group, Shuozhou 036000, China |
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Abstract Based on overlimit gas in upper corner and stoping roadway under U type ventilation, according to geological conditions of 7828 working face of the tested mine, Y type Ventilation system design and ventilation experiment were conducted, the reasonable ventilation circuit of two intake one return and the air volume were settled, pressure field and ventilation resistance were got based on the site measurement.
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