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沙曲矿北翼4#主采煤层工作面涌出量大、瓦斯超限严重,局部措施无法从根本上解决瓦斯问题。沙曲矿利用购置的澳大利亚VLD-1000型长距离定向钻机,在试验基础上,对规划的24208工作面进行区域预抽,瓦斯抽采浓度高、抽采量大、稳定抽采期长,效果显著。可在矿井其他未采区域推广长钻孔区域预抽,对于缓解全矿井范围内的瓦斯治理压力具有极其重要的意义。
In the north of Shaqu Mine, the main coal seam face 4 # has a large discharge capacity and serious gas overrun. Local measures can not fundamentally solve the gas problem. Shaqu mine using the acquisition of the Australian VLD-1000 long-range directional drilling machine, on the basis of the test, the planned 24,208 face pre-pumping area, high concentration of gas extraction, pumping large, stable extraction period, the effect Significant. It is of great significance to promote the pre-pumping of long borehole areas in other un-extracted areas of the mine to relieve the pressure of gas treatment in the whole mine.