瓦斯尾巷沿空留巷技术

doi:10.11799/ce201504012

COAL ENGINEERING ›› 2015, Vol. 47 ›› Issue (4): 35-37.doi: 10.11799/ce201504012

Gob-side Entry Retaining Technique of Degassing Entry

Received:2014-03-09 Revised:2014-05-02 Online:2015-04-10 Published:2015-04-10

Abstract

Abstract: The five deformation stages of gob-side entry retaining for E8-19090 degassing entry in No.4 Colliery of Pingdingshan Coal Group Company were analyzed, and the all bolt support was determined as the support form for the E8-19090 degassing entry, the cable supplement support and packed nog support were used to resist the mining influence and second mining influence. The crossheadings of E8-19090 degassing entry were sealed well by the double sealing wall and shotcreting, ensuring the safe mining. About six millon RMB was saved through the gob-side entry retaining, besides relieving the alternation of extraction in No.4 Colliery.

Key words: gob-side entry retaining, all bolt support, supplement support, sealing

CLC Number:

TD353+.6

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URL: http://www.coale.com.cn/EN/10.11799/ce201504012

http://www.coale.com.cn/EN/Y2015/V47/I4/35

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Gob-side Entry Retaining Technique of Degassing Entry

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