岩巷炮掘工作面长抽短压式通风降尘技术研究及实践

doi:10.11799/ce201511024

COAL ENGINEERING ›› 2015, Vol. 47 ›› Issue (11): 74-77.doi: 10.11799/ce201511024

Research and practice of ventilation and dust-reducing technology at the rock heading blast advancement face with FANP ventilation

Received:2014-09-28 Revised:2014-12-03 Online:2015-11-12 Published:2015-12-07

Abstract

Abstract: In order to solve the problem of high dust concentration of rock drivage face, the flow field of far-absorption-near press(FANP) ventilation and dust removal was calculated by Fluent, and the influence law of pressure extraction ratio to distribution of dust concentration and wind flow. The results show that: reasonable pressure extraction ratio of rock drivage face is between 0.5 and 0.75. Using reasonable pressure extraction ratio in rock drivage face of the sixth mining area of Dongtan coal mine, dust concentration of the working face was reduced to less than 10 mg/m3, and achieved the desired goal.

Key words: rock drivage face, far-absorption-near press, pressure extraction ratio, dust

CLC Number:

TD714+.43

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URL: http://www.coale.com.cn/EN/10.11799/ce201511024

http://www.coale.com.cn/EN/Y2015/V47/I11/74

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Research and practice of ventilation and dust-reducing technology at the rock heading blast advancement face with FANP ventilation

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