COAL ENGINEERING ›› 2016, Vol. 48 ›› Issue (6): 15-18.doi: 10.11799/ce201606005
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Abstract: In order to provide the basis for the design of the borehole drilling field in 1208 working face of Shuguang coal mine, study the height of two bands by using empirical formula and UDEC numerical simulation software. According to the study, the height of the fissured zone and fractured zone is 16m and 31m in 1208 working face. The borehole drilling field for mine gas extraction is designed according to the height of the two bands and applied to the practice. According to the observed data, the average gas volume fraction in No. 1 borehole drilling field is 39%, the gas concentration in 1208 working face and it’s material roadway is controlled in 1% by gas extraction in material roadway, the gas concentration is also controlled. The gas drainage results shows that design on borehole drilling field in 1208 working face is effective.
CLC Number:
TD712+.6
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URL: http://www.coale.com.cn/EN/10.11799/ce201606005
http://www.coale.com.cn/EN/Y2016/V48/I6/15